darkcomet | d340f8163f599b8f52eda452caf625c2036db62d4eca7e5bca8f7b095a1edcde

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 13:20

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General

Target

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Size

243KB
MD5

1a466065bc9997c4757e4739ed07fb42
SHA1

ede4dcfa02f62dd2f5de5e7987cbe64871ee2f66
SHA256

d340f8163f599b8f52eda452caf625c2036db62d4eca7e5bca8f7b095a1edcde
SHA512

e29cc862a941d667b0af0bb7c84815392bc9bc904e65d2ed0eb1de1bfcf216dd7e7e1579680bc1c2647a4e50aadaa9c57ba7e52fa55db284c5acd756e9fad077
SSDEEP

6144:QFLFE+xd3Fyprbf6ZJr8DPBUDthcOWpa0pBRi08Y6:QPd1kcF8NUDjcOWpaabis

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe

Windows security bypass 2 TTPs 1 IoCs
evasion trojan

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

winupdate.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3388 attrib.exe
2472 attrib.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation 1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

2828 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid process

3140 winupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe

pid	process
3388	attrib.exe
2472	attrib.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe

pid	process
2828	notepad.exe

pid	process
3140	winupdate.exe

UPX packed file 17 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4680-0-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe	upx
behavioral2/memory/4680-12-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-15-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-16-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-18-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-19-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-20-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-21-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-22-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-23-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-24-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-25-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-26-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-27-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-28-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3140-29-0x0000000013140000-0x00000000131FB000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

winupdate.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" winupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exenotepad.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	notepad.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeSecurityPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeBackupPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeRestorePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeShutdownPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeDebugPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeUndockPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: 33	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: 34	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: 35	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: 36	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3140	winupdate.exe
Token: SeSecurityPrivilege	3140	winupdate.exe
Token: SeTakeOwnershipPrivilege	3140	winupdate.exe
Token: SeLoadDriverPrivilege	3140	winupdate.exe
Token: SeSystemProfilePrivilege	3140	winupdate.exe
Token: SeSystemtimePrivilege	3140	winupdate.exe
Token: SeProfSingleProcessPrivilege	3140	winupdate.exe
Token: SeIncBasePriorityPrivilege	3140	winupdate.exe
Token: SeCreatePagefilePrivilege	3140	winupdate.exe
Token: SeBackupPrivilege	3140	winupdate.exe
Token: SeRestorePrivilege	3140	winupdate.exe
Token: SeShutdownPrivilege	3140	winupdate.exe
Token: SeDebugPrivilege	3140	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3140	winupdate.exe
Token: SeChangeNotifyPrivilege	3140	winupdate.exe
Token: SeRemoteShutdownPrivilege	3140	winupdate.exe
Token: SeUndockPrivilege	3140	winupdate.exe
Token: SeManageVolumePrivilege	3140	winupdate.exe
Token: SeImpersonatePrivilege	3140	winupdate.exe
Token: SeCreateGlobalPrivilege	3140	winupdate.exe
Token: 33	3140	winupdate.exe
Token: 34	3140	winupdate.exe
Token: 35	3140	winupdate.exe
Token: 36	3140	winupdate.exe

Suspicious use of WriteProcessMemory 49 IoCs

Processes:

1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe

description	pid	process	target process
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 1460	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2472	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 2472	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 2472	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 3388	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 3388	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 3388	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	attrib.exe
PID 4680 wrote to memory of 3140	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	winupdate.exe
PID 4680 wrote to memory of 3140	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	winupdate.exe
PID 4680 wrote to memory of 3140	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	winupdate.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe
PID 4680 wrote to memory of 2828	4680	1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3388 attrib.exe
2472 attrib.exe

pid	process
3388	attrib.exe
2472	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4680

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Adds Run key to start application
PID:1460

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\1a466065bc9997c4757e4739ed07fb42_JaffaCakes118.exe" +s +h
2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2472

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3388

C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
"C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
2⤵
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
PID:3140

C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
2⤵
- Deletes itself
PID:2828

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
Filesize
243KB

MD5
1a466065bc9997c4757e4739ed07fb42

SHA1
ede4dcfa02f62dd2f5de5e7987cbe64871ee2f66

SHA256
d340f8163f599b8f52eda452caf625c2036db62d4eca7e5bca8f7b095a1edcde

SHA512
e29cc862a941d667b0af0bb7c84815392bc9bc904e65d2ed0eb1de1bfcf216dd7e7e1579680bc1c2647a4e50aadaa9c57ba7e52fa55db284c5acd756e9fad077

Download Submit
memory/1460-3-0x0000000000F90000-0x0000000000F91000-memory.dmp

Filesize
4KB

Download
memory/2828-10-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/3140-24-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-21-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-29-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-13-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/3140-15-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-16-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-18-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-19-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-20-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-28-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-22-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-23-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-27-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-25-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/3140-26-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/4680-0-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download
memory/4680-1-0x0000000000A10000-0x0000000000A11000-memory.dmp

Filesize
4KB

Download
memory/4680-12-0x0000000013140000-0x00000000131FB000-memory.dmp

Filesize
748KB

Download