darkcomet | 3fad06ea2340196a6ef3de8459bbb4f8be381e9e01f10d7ef8dc483f17d05242

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2025, 15:21

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General

Target
JaffaCakes118_40f3221ba41342f517a04101ada17938.exe
Size 1.1MB
Sample250127-srbtjsvkf1
SHA256 3fad06ea2340196a6ef3de8459bbb4f8be381e9e01f10d7ef8dc483f17d05242
MD5 40f3221ba41342f517a04101ada17938
SHA1 419335c0068763c3c0954fb92b28ff9991fdee51
SHA512 fe3df8bc3371f39acb98942e27fba10776c5629f2e905102d488d4c8fe4514a0fd90c5bd0adce09e53345d92fc8b769ddf2158638c2198def6ca029fdab0a3b8
SSDEEP 12288:SQS6a/lHd/yKq+7D1sIM9kvLlH++OU2hsPhGJDtACYTLMIy+10kKquKw4EUYRHkv:aLPgnIhIaMtY01FT+RqLjP0D
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

selmi.no-ip.org:1604

Mutex

DC_MUTEX-SFCCS64

Attributes

gencode
kgDcLdg0fqJQ
install
false
offline_keylogger
true
persistence
false

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
624	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JavaUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\JavaUpdtr\\JaffaCakes118_40f3221ba41342f517a04101ada17938.exe"	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 32 set thread context of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83

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	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe
Token: SeIncreaseQuotaPrivilege	624	vbc.exe
Token: SeSecurityPrivilege	624	vbc.exe
Token: SeTakeOwnershipPrivilege	624	vbc.exe
Token: SeLoadDriverPrivilege	624	vbc.exe
Token: SeSystemProfilePrivilege	624	vbc.exe
Token: SeSystemtimePrivilege	624	vbc.exe
Token: SeProfSingleProcessPrivilege	624	vbc.exe
Token: SeIncBasePriorityPrivilege	624	vbc.exe
Token: SeCreatePagefilePrivilege	624	vbc.exe
Token: SeBackupPrivilege	624	vbc.exe
Token: SeRestorePrivilege	624	vbc.exe
Token: SeShutdownPrivilege	624	vbc.exe
Token: SeDebugPrivilege	624	vbc.exe
Token: SeSystemEnvironmentPrivilege	624	vbc.exe
Token: SeChangeNotifyPrivilege	624	vbc.exe
Token: SeRemoteShutdownPrivilege	624	vbc.exe
Token: SeUndockPrivilege	624	vbc.exe
Token: SeManageVolumePrivilege	624	vbc.exe
Token: SeImpersonatePrivilege	624	vbc.exe
Token: SeCreateGlobalPrivilege	624	vbc.exe
Token: 33	624	vbc.exe
Token: 34	624	vbc.exe
Token: 35	624	vbc.exe
Token: 36	624	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
624	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83
PID 32 wrote to memory of 624	32	JaffaCakes118_40f3221ba41342f517a04101ada17938.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40f3221ba41342f517a04101ada17938.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40f3221ba41342f517a04101ada17938.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:32
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

vbc.exe

Path C:\Users\Admin\AppData\Local\Temp\vbc.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/32-15-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/32-1-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/32-2-0x0000000074DE0000-0x0000000075391000-memory.dmp

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memory/32-0-0x0000000074DE2000-0x0000000074DE3000-memory.dmp

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memory/624-19-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-23-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-14-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-16-0x00000000022D0000-0x00000000022D1000-memory.dmp

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memory/624-18-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-17-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-10-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-7-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-20-0x00000000022D0000-0x00000000022D1000-memory.dmp

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memory/624-21-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-22-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-12-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-24-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-25-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-26-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-27-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-28-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-29-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-30-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-31-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-32-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/624-33-0x0000000000400000-0x00000000004B2000-memory.dmp

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