darkcomet | 0f3093b7e8dc40fe1ceebe0de856af8caebeaf0e08795f49cd0b8c348c2e4bdd

General

Target

JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe
Size

741KB
MD5

b7bf265c6155ff22a8bef94945a50816
SHA1

9a63ca4ab35385d3a0488de697347a9bf8278312
SHA256

0f3093b7e8dc40fe1ceebe0de856af8caebeaf0e08795f49cd0b8c348c2e4bdd
SHA512

41271cfd51c907bb5dfcf8e3dacc62906b6732d780238c113752da060080eab7724fab12bfff4c810bde58be5e20a98a9b2f113125512f3ed2e20e9930931f2d
SSDEEP

12288:VolDRSxTL03zhNjwuOBdlxHHmEDnfAk3Fo90vVOH3JNG1BNCh+jrsutt8BwiY:VolDSU3FNc9BdlJm2nfAuu0vVOHGFO+b

Score

10^/10

darkcomet guest16 discovery rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-F54S21D

Attributes

gencode
uu9UsYzn8T3D
install
false
offline_keylogger
false
persistence
false

rc4.plain

Signatures

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

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	CryptedFile.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-1-5-21-3630502724-2561614198-3854231964-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	CryptedFile.exe

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 2 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	CryptedFile.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe

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	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	CryptedFile.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	CryptedFile.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	CryptedFile.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2536	CryptedFile.exe
Token: SeSecurityPrivilege	2536	CryptedFile.exe
Token: SeTakeOwnershipPrivilege	2536	CryptedFile.exe
Token: SeLoadDriverPrivilege	2536	CryptedFile.exe
Token: SeSystemProfilePrivilege	2536	CryptedFile.exe
Token: SeSystemtimePrivilege	2536	CryptedFile.exe
Token: SeProfSingleProcessPrivilege	2536	CryptedFile.exe
Token: SeIncBasePriorityPrivilege	2536	CryptedFile.exe
Token: SeCreatePagefilePrivilege	2536	CryptedFile.exe
Token: SeBackupPrivilege	2536	CryptedFile.exe
Token: SeRestorePrivilege	2536	CryptedFile.exe
Token: SeShutdownPrivilege	2536	CryptedFile.exe
Token: SeDebugPrivilege	2536	CryptedFile.exe
Token: SeSystemEnvironmentPrivilege	2536	CryptedFile.exe
Token: SeChangeNotifyPrivilege	2536	CryptedFile.exe
Token: SeRemoteShutdownPrivilege	2536	CryptedFile.exe
Token: SeUndockPrivilege	2536	CryptedFile.exe
Token: SeManageVolumePrivilege	2536	CryptedFile.exe
Token: SeImpersonatePrivilege	2536	CryptedFile.exe
Token: SeCreateGlobalPrivilege	2536	CryptedFile.exe
Token: 33	2536	CryptedFile.exe
Token: 34	2536	CryptedFile.exe
Token: 35	2536	CryptedFile.exe
Token: 36	2536	CryptedFile.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 2536	532	JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe	87
PID 532 wrote to memory of 2536	532	JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe	87
PID 532 wrote to memory of 2536	532	JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b7bf265c6155ff22a8bef94945a50816.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:532
- C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe
  "C:\Users\Admin\AppData\Local\Temp\CryptedFile.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2536

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

5

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\CryptedFile.exe

Filesize
713KB

MD5
e041df98b0888b16b2e0dfc975d9679c

SHA1
d7fef47164fe241d3c1351a482f901cfa49ed6a1

SHA256
128a2728e60163401633d5a8836a274b14f9da3cf192f7cf18329c2eeac2cb3a

SHA512
9e609e7d9889bf40f3540af81e7a98594bd12313bd341cedfd0037168fc3b271ecccbaf863d220fda08eec7e86f0e2d8859ff6c33872ca1dc9a169eab1b14c6f

Download Submit
memory/532-0-0x0000000074E2E000-0x0000000074E2F000-memory.dmp

Filesize
4KB

Download
memory/532-1-0x00000000009E0000-0x00000000009EE000-memory.dmp

Filesize
56KB

Download
memory/532-2-0x00000000052A0000-0x000000000533C000-memory.dmp

Filesize
624KB

Download
memory/532-3-0x00000000058F0000-0x0000000005E94000-memory.dmp

Filesize
5.6MB

Download
memory/532-4-0x0000000005340000-0x00000000053D2000-memory.dmp

Filesize
584KB

Download
memory/532-5-0x0000000005260000-0x000000000526A000-memory.dmp

Filesize
40KB

Download
memory/532-6-0x0000000005550000-0x00000000055A6000-memory.dmp

Filesize
344KB

Download
memory/532-7-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/532-17-0x0000000074E20000-0x00000000755D0000-memory.dmp

Filesize
7.7MB

Download
memory/2536-20-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download
memory/2536-25-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-18-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download
memory/2536-21-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-22-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-23-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-24-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-19-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-26-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-27-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-28-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-29-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-30-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-31-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-32-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2536-33-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads