darkcomet | 2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0

General

Target

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Size

268KB
MD5

1d11e611f4fb55b6b85caee53c0356e6
SHA1

91168c50d29841330e627f3a52958044ce958488
SHA256

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0
SHA512

51e9464c41b0cd35005373e3c45c11b82b79758f61a317dcc67b11a282cb1cbebbbecd19a676b6dd53dc2c1a71951a16593b2853826aec0cdab2da60294c2aef
SSDEEP

6144:5ocMD9L6Ro5oso1IwJs3mb6plI/7SCNG:5tMDF6RomTGwJd64uCA

Score

10^/10

darkcomet persistence rat trojan

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:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.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"	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exeexplorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

description	pid	process	target process
PID 1744 set thread context of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

explorer.exe2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exeexplorer.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exeexplorer.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeSecurityPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeTakeOwnershipPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeLoadDriverPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeSystemProfilePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeSystemtimePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeProfSingleProcessPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeIncBasePriorityPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeCreatePagefilePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeBackupPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeRestorePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeShutdownPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeDebugPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeSystemEnvironmentPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeChangeNotifyPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeRemoteShutdownPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeUndockPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeManageVolumePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeImpersonatePrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeCreateGlobalPrivilege	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: 33	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: 34	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: 35	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
Token: SeIncreaseQuotaPrivilege	1192	explorer.exe
Token: SeSecurityPrivilege	1192	explorer.exe
Token: SeTakeOwnershipPrivilege	1192	explorer.exe
Token: SeLoadDriverPrivilege	1192	explorer.exe
Token: SeSystemProfilePrivilege	1192	explorer.exe
Token: SeSystemtimePrivilege	1192	explorer.exe
Token: SeProfSingleProcessPrivilege	1192	explorer.exe
Token: SeIncBasePriorityPrivilege	1192	explorer.exe
Token: SeCreatePagefilePrivilege	1192	explorer.exe
Token: SeBackupPrivilege	1192	explorer.exe
Token: SeRestorePrivilege	1192	explorer.exe
Token: SeShutdownPrivilege	1192	explorer.exe
Token: SeDebugPrivilege	1192	explorer.exe
Token: SeSystemEnvironmentPrivilege	1192	explorer.exe
Token: SeChangeNotifyPrivilege	1192	explorer.exe
Token: SeRemoteShutdownPrivilege	1192	explorer.exe
Token: SeUndockPrivilege	1192	explorer.exe
Token: SeManageVolumePrivilege	1192	explorer.exe
Token: SeImpersonatePrivilege	1192	explorer.exe
Token: SeCreateGlobalPrivilege	1192	explorer.exe
Token: 33	1192	explorer.exe
Token: 34	1192	explorer.exe
Token: 35	1192	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer.exe

pid process

1192 explorer.exe

pid	process
1192	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe

description	pid	process	target process
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe
PID 1744 wrote to memory of 1192	1744	2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe
"C:\Users\Admin\AppData\Local\Temp\2b5b7b832883b18cde00583c617be8a5bec1d9f375f937e65ae1d00854c46ef0.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1192

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1192-56-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1192-58-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1192-59-0x00000000004B8001-mapping.dmp

Download
memory/1192-63-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1192-60-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1192-64-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1192-65-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1744-54-0x0000000076301000-0x0000000076303000-memory.dmp

Filesize
8KB

Download
memory/1744-55-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1744-61-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads