darkcomet | c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c

General

Target

c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Size

986KB
MD5

e4589bdd4373f16a69e4920cbc073027
SHA1

f0ebc47a2aeff4b011b83fc259add79269e9088a
SHA256

c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c
SHA512

1df8da02951c320883ce91c5bf2ba562ebfee8cd8b7b620f7654c8f6d9d1a5ce1d7f8118de2cf766ce452803db0df13a6ee270f393e0237b0c610565a1e34442
SSDEEP

12288:iaAchpWsuVtDnBsBDJIcynnC90levX4CuYf2D82T3s99+VHuN9oSd:zAEE3uBDhynCylQgi63O9+VuNt

Score

10^/10

darkcomet 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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4876-132-0x0000000000400000-0x00000000004F8000-memory.dmp	upx
behavioral2/memory/4876-133-0x0000000000400000-0x00000000004F8000-memory.dmp	upx

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.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 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeSecurityPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeTakeOwnershipPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeLoadDriverPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeSystemProfilePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeSystemtimePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeProfSingleProcessPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeIncBasePriorityPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeCreatePagefilePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeBackupPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeRestorePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeShutdownPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeDebugPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeSystemEnvironmentPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeChangeNotifyPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeRemoteShutdownPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeUndockPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeManageVolumePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeImpersonatePrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: SeCreateGlobalPrivilege	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: 33	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: 34	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: 35	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
Token: 36	4876	c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe

C:\Users\Admin\AppData\Local\Temp\c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe
"C:\Users\Admin\AppData\Local\Temp\c2bc9d90cf7c07e8a7fbf0e95ee6f2f498bf7013af1244b56bbec2710a62447c.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
PID:4876

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

4

T1012

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4876-132-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download
memory/4876-133-0x0000000000400000-0x00000000004F8000-memory.dmp

Filesize
992KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads