darkcomet | 9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78

General

Target

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Size

283KB
MD5

6bf6d7d7e70cd737716b614f9008417b
SHA1

0c1996ccb192acd5ead43954cc984480fb18d910
SHA256

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78
SHA512

6999c3f15f7b1c7231990f24c4dbae31ca9fb4faeddc337edfb5e6644f588ddcc103875d2746b7e3852bded61e8024cf2e5b41c1aef0ce05d5ba711c74474d33

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

T1004

Modify Registry

T1112

Processes:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.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\\Local\\Temp\\system.exe"	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe

Executes dropped EXE 1 IoCs

Processes:

system.exe

pid process

1356 system.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1356	system.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\system.exe	upx
C:\Users\Admin\AppData\Local\Temp\system.exe	upx

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:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exesystem.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe"	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe"	system.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

system.exe

pid process

1356 system.exe

pid	process
1356	system.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exesystem.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeSecurityPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeTakeOwnershipPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeLoadDriverPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeSystemProfilePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeSystemtimePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeProfSingleProcessPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeIncBasePriorityPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeCreatePagefilePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeBackupPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeRestorePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeShutdownPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeDebugPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeSystemEnvironmentPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeChangeNotifyPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeRemoteShutdownPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeUndockPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeManageVolumePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeImpersonatePrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeCreateGlobalPrivilege	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: 33	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: 34	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: 35	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: 36	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
Token: SeIncreaseQuotaPrivilege	1356	system.exe
Token: SeSecurityPrivilege	1356	system.exe
Token: SeTakeOwnershipPrivilege	1356	system.exe
Token: SeLoadDriverPrivilege	1356	system.exe
Token: SeSystemProfilePrivilege	1356	system.exe
Token: SeSystemtimePrivilege	1356	system.exe
Token: SeProfSingleProcessPrivilege	1356	system.exe
Token: SeIncBasePriorityPrivilege	1356	system.exe
Token: SeCreatePagefilePrivilege	1356	system.exe
Token: SeBackupPrivilege	1356	system.exe
Token: SeRestorePrivilege	1356	system.exe
Token: SeShutdownPrivilege	1356	system.exe
Token: SeDebugPrivilege	1356	system.exe
Token: SeSystemEnvironmentPrivilege	1356	system.exe
Token: SeChangeNotifyPrivilege	1356	system.exe
Token: SeRemoteShutdownPrivilege	1356	system.exe
Token: SeUndockPrivilege	1356	system.exe
Token: SeManageVolumePrivilege	1356	system.exe
Token: SeImpersonatePrivilege	1356	system.exe
Token: SeCreateGlobalPrivilege	1356	system.exe
Token: 33	1356	system.exe
Token: 34	1356	system.exe
Token: 35	1356	system.exe
Token: 36	1356	system.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

system.exe

pid process

1356 system.exe

pid	process
1356	system.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.execmd.execmd.exesystem.exe

description	pid	process	target process
PID 1132 wrote to memory of 4904	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 4904	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 4904	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 1868	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 1868	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 1868	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	cmd.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1132 wrote to memory of 2320	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	notepad.exe
PID 1868 wrote to memory of 1572	1868	cmd.exe	attrib.exe
PID 1868 wrote to memory of 1572	1868	cmd.exe	attrib.exe
PID 1868 wrote to memory of 1572	1868	cmd.exe	attrib.exe
PID 4904 wrote to memory of 2552	4904	cmd.exe	attrib.exe
PID 4904 wrote to memory of 2552	4904	cmd.exe	attrib.exe
PID 4904 wrote to memory of 2552	4904	cmd.exe	attrib.exe
PID 1132 wrote to memory of 1356	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	system.exe
PID 1132 wrote to memory of 1356	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	system.exe
PID 1132 wrote to memory of 1356	1132	9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe	system.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe
PID 1356 wrote to memory of 3816	1356	system.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1572 attrib.exe
2552 attrib.exe

pid	process
1572	attrib.exe
2552	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe
"C:\Users\Admin\AppData\Local\Temp\9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.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
PID:1132

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4904

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78.exe" +s +h
3⤵
- Views/modifies file attributes
PID:2552

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1572

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:2320

C:\Users\Admin\AppData\Local\Temp\system.exe
"C:\Users\Admin\AppData\Local\Temp\system.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
PID:1356

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3816

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\system.exe
Filesize
283KB

MD5
6bf6d7d7e70cd737716b614f9008417b

SHA1
0c1996ccb192acd5ead43954cc984480fb18d910

SHA256
9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78

SHA512
6999c3f15f7b1c7231990f24c4dbae31ca9fb4faeddc337edfb5e6644f588ddcc103875d2746b7e3852bded61e8024cf2e5b41c1aef0ce05d5ba711c74474d33

Download Submit
C:\Users\Admin\AppData\Local\Temp\system.exe
Filesize
283KB

MD5
6bf6d7d7e70cd737716b614f9008417b

SHA1
0c1996ccb192acd5ead43954cc984480fb18d910

SHA256
9a967774e134d423ea04e8079d5236c8363422de1bd4e3e066168df9ccd54e78

SHA512
6999c3f15f7b1c7231990f24c4dbae31ca9fb4faeddc337edfb5e6644f588ddcc103875d2746b7e3852bded61e8024cf2e5b41c1aef0ce05d5ba711c74474d33

Download Submit
memory/1356-135-0x0000000000000000-mapping.dmp

Download
memory/1572-133-0x0000000000000000-mapping.dmp

Download
memory/1868-131-0x0000000000000000-mapping.dmp

Download
memory/2320-132-0x0000000000000000-mapping.dmp

Download
memory/2552-134-0x0000000000000000-mapping.dmp

Download
memory/3816-138-0x0000000000000000-mapping.dmp

Download
memory/4904-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads