Overview
overview
10Static
static
10lab_sample...5b.exe
windows7-x64
7lab_sample...5b.exe
windows10-2004-x64
7lab_sample...82.exe
windows7-x64
8lab_sample...82.exe
windows10-2004-x64
7lab_sample...63.exe
windows7-x64
10lab_sample...63.exe
windows10-2004-x64
10lab_sample...15.exe
windows7-x64
1lab_sample...15.exe
windows10-2004-x64
1lab_sample...c7.exe
windows7-x64
3lab_sample...c7.exe
windows10-2004-x64
7lab_sample...fc.exe
windows7-x64
6lab_sample...fc.exe
windows10-2004-x64
6Analysis
-
max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
28-06-2024 11:50
Behavioral task
behavioral1
Sample
lab_samples/1e3966e77ad1cbf3e3ef76803fbf92300b2b88af39650a1208520e0cdc05645b.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
lab_samples/1e3966e77ad1cbf3e3ef76803fbf92300b2b88af39650a1208520e0cdc05645b.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral3
Sample
lab_samples/6562e2ac60afa314cd463f771fcfb8be70f947f6e2b314b0c48187eebb33dd82.exe
Resource
win7-20231129-en
Behavioral task
behavioral4
Sample
lab_samples/6562e2ac60afa314cd463f771fcfb8be70f947f6e2b314b0c48187eebb33dd82.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
lab_samples/6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Resource
win7-20240508-en
Behavioral task
behavioral6
Sample
lab_samples/6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral7
Sample
lab_samples/a380617cf945ca35dbbc3d031bcc612f0dca96c1027a75003182ba5be2851215.exe
Resource
win7-20240611-en
Behavioral task
behavioral8
Sample
lab_samples/a380617cf945ca35dbbc3d031bcc612f0dca96c1027a75003182ba5be2851215.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral9
Sample
lab_samples/b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe
Resource
win7-20240220-en
Behavioral task
behavioral10
Sample
lab_samples/b3b3bb519dd34a933a0b9920fa905ecaa5ce32c34871a29b5823a5b0fd4d9fc7.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral11
Sample
lab_samples/e30b76f9454a5fd3d11b5792ff93e56c52bf5dfba6ab375c3b96e17af562f5fc.exe
Resource
win7-20240611-en
Behavioral task
behavioral12
Sample
lab_samples/e30b76f9454a5fd3d11b5792ff93e56c52bf5dfba6ab375c3b96e17af562f5fc.exe
Resource
win10v2004-20240508-en
General
-
Target
lab_samples/6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
-
Size
658KB
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MD5
f6351da84168d40fae8da0c156fbab0f
-
SHA1
1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
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SHA256
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
-
SHA512
9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
-
SSDEEP
12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hn:qZ1xuVVjfFoynPaVBUR8f+kN10EBV
Malware Config
Extracted
darkcomet
Guest16
test213.no-ip.info:1604
DC_MUTEX-KHNEW06
-
InstallPath
MSDCSC\runddl32.exe
-
gencode
F6FE8i2BxCpu
-
install
true
-
offline_keylogger
true
-
persistence
true
-
reg_key
MicroUpdate
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
Processes:
attrib.exeattrib.exepid process 1832 attrib.exe 5028 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Executes dropped EXE 1 IoCs
Processes:
runddl32.exepid process 3656 runddl32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
runddl32.exe6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" runddl32.exe Set value (str) \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe" 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
Processes:
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
runddl32.exepid process 3656 runddl32.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exerunddl32.exedescription pid process Token: SeIncreaseQuotaPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSecurityPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeTakeOwnershipPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeLoadDriverPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemProfilePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemtimePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeProfSingleProcessPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeIncBasePriorityPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeCreatePagefilePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeBackupPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeRestorePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeShutdownPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeDebugPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeSystemEnvironmentPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeChangeNotifyPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeRemoteShutdownPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeUndockPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeManageVolumePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeImpersonatePrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeCreateGlobalPrivilege 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 33 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 34 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 35 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: 36 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe Token: SeIncreaseQuotaPrivilege 3656 runddl32.exe Token: SeSecurityPrivilege 3656 runddl32.exe Token: SeTakeOwnershipPrivilege 3656 runddl32.exe Token: SeLoadDriverPrivilege 3656 runddl32.exe Token: SeSystemProfilePrivilege 3656 runddl32.exe Token: SeSystemtimePrivilege 3656 runddl32.exe Token: SeProfSingleProcessPrivilege 3656 runddl32.exe Token: SeIncBasePriorityPrivilege 3656 runddl32.exe Token: SeCreatePagefilePrivilege 3656 runddl32.exe Token: SeBackupPrivilege 3656 runddl32.exe Token: SeRestorePrivilege 3656 runddl32.exe Token: SeShutdownPrivilege 3656 runddl32.exe Token: SeDebugPrivilege 3656 runddl32.exe Token: SeSystemEnvironmentPrivilege 3656 runddl32.exe Token: SeChangeNotifyPrivilege 3656 runddl32.exe Token: SeRemoteShutdownPrivilege 3656 runddl32.exe Token: SeUndockPrivilege 3656 runddl32.exe Token: SeManageVolumePrivilege 3656 runddl32.exe Token: SeImpersonatePrivilege 3656 runddl32.exe Token: SeCreateGlobalPrivilege 3656 runddl32.exe Token: 33 3656 runddl32.exe Token: 34 3656 runddl32.exe Token: 35 3656 runddl32.exe Token: 36 3656 runddl32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
runddl32.exepid process 3656 runddl32.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.execmd.execmd.exerunddl32.exedescription pid process target process PID 4400 wrote to memory of 2744 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 4400 wrote to memory of 2744 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 4400 wrote to memory of 2744 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 4400 wrote to memory of 2460 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 4400 wrote to memory of 2460 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 4400 wrote to memory of 2460 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe cmd.exe PID 2744 wrote to memory of 1832 2744 cmd.exe attrib.exe PID 2744 wrote to memory of 1832 2744 cmd.exe attrib.exe PID 2744 wrote to memory of 1832 2744 cmd.exe attrib.exe PID 2460 wrote to memory of 5028 2460 cmd.exe attrib.exe PID 2460 wrote to memory of 5028 2460 cmd.exe attrib.exe PID 2460 wrote to memory of 5028 2460 cmd.exe attrib.exe PID 4400 wrote to memory of 3656 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe runddl32.exe PID 4400 wrote to memory of 3656 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe runddl32.exe PID 4400 wrote to memory of 3656 4400 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe runddl32.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe PID 3656 wrote to memory of 4984 3656 runddl32.exe notepad.exe -
Views/modifies file attributes 1 TTPs 2 IoCs
Processes:
attrib.exeattrib.exepid process 1832 attrib.exe 5028 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe"C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\lab_samples\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\lab_samples" +s +h2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\attrib.exeattrib "C:\Users\Admin\AppData\Local\Temp\lab_samples" +s +h3⤵
- Sets file to hidden
- Views/modifies file attributes
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exenotepad3⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exeFilesize
658KB
MD5f6351da84168d40fae8da0c156fbab0f
SHA11a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
SHA2566d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
SHA5129948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
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memory/3656-70-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
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memory/3656-79-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-69-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-78-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-65-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-66-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-67-0x0000000002710000-0x0000000002711000-memory.dmpFilesize
4KB
-
memory/3656-68-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-77-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-62-0x0000000002710000-0x0000000002711000-memory.dmpFilesize
4KB
-
memory/3656-72-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-71-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-73-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-74-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-75-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/3656-76-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
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memory/4400-64-0x0000000000400000-0x00000000004B2000-memory.dmpFilesize
712KB
-
memory/4400-0-0x0000000000620000-0x0000000000621000-memory.dmpFilesize
4KB
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memory/4984-63-0x0000000001100000-0x0000000001101000-memory.dmpFilesize
4KB