darkcomet | 2decd81550f4d79ec936cf7587caf057782c98b4147b604084aa73d599a04a3d

General

Target

JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe
Size

1011KB
MD5

31f58638a0a7fa73b994e499a535a122
SHA1

8e746e1f5ed2cf7a597a3f8aae807b982f314b3a
SHA256

2decd81550f4d79ec936cf7587caf057782c98b4147b604084aa73d599a04a3d
SHA512

c824e522671b70269fdecb96fa46d6ce6ff1221b5e0135f85f68735080a5b0898ae47ad346a08776310c602aeb10c230f4de5c60b07f65c3d344865c47b7eb39
SSDEEP

24576:BvOTggIRfmQX3zRYC6FVZPv+FWe4Ys/E:VjYlDZ3+UT/E

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

testpyrolol.no-ip.org:1604

Mutex

DC_MUTEX-46LUR2B

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
36dND8bPztoH
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

rc4.plain

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
3448	svchost.exe
4552	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3448	svchost.exe
Token: SeSecurityPrivilege	3448	svchost.exe
Token: SeTakeOwnershipPrivilege	3448	svchost.exe
Token: SeLoadDriverPrivilege	3448	svchost.exe
Token: SeSystemProfilePrivilege	3448	svchost.exe
Token: SeSystemtimePrivilege	3448	svchost.exe
Token: SeProfSingleProcessPrivilege	3448	svchost.exe
Token: SeIncBasePriorityPrivilege	3448	svchost.exe
Token: SeCreatePagefilePrivilege	3448	svchost.exe
Token: SeBackupPrivilege	3448	svchost.exe
Token: SeRestorePrivilege	3448	svchost.exe
Token: SeShutdownPrivilege	3448	svchost.exe
Token: SeDebugPrivilege	3448	svchost.exe
Token: SeSystemEnvironmentPrivilege	3448	svchost.exe
Token: SeChangeNotifyPrivilege	3448	svchost.exe
Token: SeRemoteShutdownPrivilege	3448	svchost.exe
Token: SeUndockPrivilege	3448	svchost.exe
Token: SeManageVolumePrivilege	3448	svchost.exe
Token: SeImpersonatePrivilege	3448	svchost.exe
Token: SeCreateGlobalPrivilege	3448	svchost.exe
Token: 33	3448	svchost.exe
Token: 34	3448	svchost.exe
Token: 35	3448	svchost.exe
Token: 36	3448	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3312 wrote to memory of 3448	3312	JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe	88
PID 3448 wrote to memory of 4552	3448	svchost.exe	91
PID 3448 wrote to memory of 4552	3448	svchost.exe	91
PID 3448 wrote to memory of 4552	3448	svchost.exe	91

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31f58638a0a7fa73b994e499a535a122.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3448
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/3312-0-0x0000000075412000-0x0000000075413000-memory.dmp

Filesize
4KB

Download
memory/3312-1-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/3312-2-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/3312-25-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/3448-5-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3448-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3448-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3448-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3448-13-0x00000000025B0000-0x00000000025B1000-memory.dmp

Filesize
4KB

Download
memory/3448-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads