darkcomet | 9fb02ece86b6cde7ecf2579a209fe20ffdb74d4ad35cd23acbea82b5bd17b439

General

Target

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Size

302KB
MD5

1f3587ecd974baf1f9f8a26a1e6aa557
SHA1

19c60397a27a340d2fc0a5928ed19c680ccb23ed
SHA256

9fb02ece86b6cde7ecf2579a209fe20ffdb74d4ad35cd23acbea82b5bd17b439
SHA512

233af91910c13397101744bca33c53bb08d0545619d3f759a695caf6a3d31dcd2bfc10a2667e51dd8b014e827318e336dce40962d23760363cf82f0d495605c8
SSDEEP

6144:tyuLJOUX8rGYm9rnVduPvxZnHMMFYmOCN0XocbUgyhnvCS9o:tJQmlVduPvx3c8SYhvCd

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-F2XPX1H

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
2WrLoVgVtQNk
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

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:

1f3587ecd974baf1f9f8a26a1e6aa557_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\\Local\\Temp\\MSDCSC\\msdcsc.exe"	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.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:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

msdcsc.exemsdcsc.exe

pid process

4636 msdcsc.exe
3036 msdcsc.exe

pid	process
4636	msdcsc.exe
3036	msdcsc.exe

UPX packed file 25 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1500-2-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-3-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-4-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-5-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-6-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-7-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/1500-18-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-28-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-27-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-31-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-30-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-29-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-32-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-34-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-35-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-37-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-38-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-39-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-40-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-41-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-42-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-43-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-44-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-45-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3036-46-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exemsdcsc.exe

description	pid	process	target process
PID 2976 set thread context of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 4636 set thread context of 3036	4636	msdcsc.exe	msdcsc.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:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeSecurityPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeBackupPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeRestorePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeShutdownPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeDebugPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeUndockPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: 33	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: 34	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: 35	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: 36	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3036	msdcsc.exe
Token: SeSecurityPrivilege	3036	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3036	msdcsc.exe
Token: SeLoadDriverPrivilege	3036	msdcsc.exe
Token: SeSystemProfilePrivilege	3036	msdcsc.exe
Token: SeSystemtimePrivilege	3036	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3036	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3036	msdcsc.exe
Token: SeCreatePagefilePrivilege	3036	msdcsc.exe
Token: SeBackupPrivilege	3036	msdcsc.exe
Token: SeRestorePrivilege	3036	msdcsc.exe
Token: SeShutdownPrivilege	3036	msdcsc.exe
Token: SeDebugPrivilege	3036	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3036	msdcsc.exe
Token: SeChangeNotifyPrivilege	3036	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3036	msdcsc.exe
Token: SeUndockPrivilege	3036	msdcsc.exe
Token: SeManageVolumePrivilege	3036	msdcsc.exe
Token: SeImpersonatePrivilege	3036	msdcsc.exe
Token: SeCreateGlobalPrivilege	3036	msdcsc.exe
Token: 33	3036	msdcsc.exe
Token: 34	3036	msdcsc.exe
Token: 35	3036	msdcsc.exe
Token: 36	3036	msdcsc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exemsdcsc.exemsdcsc.exe

pid process

2976 1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
4636 msdcsc.exe
3036 msdcsc.exe

pid	process
2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
4636	msdcsc.exe
3036	msdcsc.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exemsdcsc.exe

description	pid	process	target process
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 2976 wrote to memory of 1500	2976	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
PID 1500 wrote to memory of 4636	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	msdcsc.exe
PID 1500 wrote to memory of 4636	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	msdcsc.exe
PID 1500 wrote to memory of 4636	1500	1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe
PID 4636 wrote to memory of 3036	4636	msdcsc.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2976

C:\Users\Admin\AppData\Local\Temp\1f3587ecd974baf1f9f8a26a1e6aa557_JaffaCakes118.exe
2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4636

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3036

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
302KB

MD5
1f3587ecd974baf1f9f8a26a1e6aa557

SHA1
19c60397a27a340d2fc0a5928ed19c680ccb23ed

SHA256
9fb02ece86b6cde7ecf2579a209fe20ffdb74d4ad35cd23acbea82b5bd17b439

SHA512
233af91910c13397101744bca33c53bb08d0545619d3f759a695caf6a3d31dcd2bfc10a2667e51dd8b014e827318e336dce40962d23760363cf82f0d495605c8

Download Submit
memory/1500-2-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-3-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-4-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-5-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-6-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-7-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1500-18-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-29-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-38-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-31-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-30-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-28-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-32-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-34-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-35-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-37-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-27-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-39-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-40-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-41-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-42-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-43-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-44-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-45-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3036-46-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads