darkcomet | 6b4200469bff3fb5fd0c7880de7f67d2fa83260a4159bf3d2305e73f005cdf05

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 23:14

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General

Target

f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe
Size

423KB
MD5

f6c9055d523b94dd0dd20cb2d59ce039
SHA1

b25235cf8781ef947a70cebbe5ab5d3cfc18b442
SHA256

6b4200469bff3fb5fd0c7880de7f67d2fa83260a4159bf3d2305e73f005cdf05
SHA512

bcc8ae473369b75ec54d83fab15c4eb1a582ac7b64db62e45976c4b979d8c9623113bcf6bf520496f9c9f33d9b4b2a2cdd27dee7c74a844f04883176021d03bf
SSDEEP

12288:2lghoSqDNJ/Jj0PeLTCdKET05/hM4/KZood31gLeiW:8g2DNb0wCdKVhny/d31IeiW

Score

10^/10

darkcomet victim evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Victim

dcrat214.no-ip.biz:1604

Mutex

DC_MUTEX-E5E9EN3

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
ndFoCwbBFulg
install
true
offline_keylogger
true
persistence
true
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:

Stage1.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	Stage1.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Processes:

msdcsc.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	msdcsc.exe

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exeStage1.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	Stage1.exe

Executes dropped EXE 3 IoCs

Processes:

Stage2.exeStage1.exemsdcsc.exe

pid	Process
2940	Stage2.exe
4656	Stage1.exe
4976	msdcsc.exe

UPX packed file 23 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1208-0-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/files/0x000300000001e9b1-5.dat	upx
behavioral2/memory/2940-12-0x0000000000400000-0x0000000000443000-memory.dmp	upx
behavioral2/memory/2940-16-0x0000000000400000-0x0000000000443000-memory.dmp	upx
behavioral2/files/0x0008000000023429-17.dat	upx
behavioral2/memory/4656-19-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4656-32-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/1208-35-0x0000000000400000-0x0000000000424000-memory.dmp	upx
behavioral2/memory/4976-37-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-38-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-39-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-40-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-41-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-42-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-43-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-44-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-45-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-46-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-47-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-48-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-49-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-50-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/4976-51-0x0000000000400000-0x00000000004EB000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Stage1.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\msdcsc.exe"	Stage1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Desktop\\MSDCSC\\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:

Stage1.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4656	Stage1.exe
Token: SeSecurityPrivilege	4656	Stage1.exe
Token: SeTakeOwnershipPrivilege	4656	Stage1.exe
Token: SeLoadDriverPrivilege	4656	Stage1.exe
Token: SeSystemProfilePrivilege	4656	Stage1.exe
Token: SeSystemtimePrivilege	4656	Stage1.exe
Token: SeProfSingleProcessPrivilege	4656	Stage1.exe
Token: SeIncBasePriorityPrivilege	4656	Stage1.exe
Token: SeCreatePagefilePrivilege	4656	Stage1.exe
Token: SeBackupPrivilege	4656	Stage1.exe
Token: SeRestorePrivilege	4656	Stage1.exe
Token: SeShutdownPrivilege	4656	Stage1.exe
Token: SeDebugPrivilege	4656	Stage1.exe
Token: SeSystemEnvironmentPrivilege	4656	Stage1.exe
Token: SeChangeNotifyPrivilege	4656	Stage1.exe
Token: SeRemoteShutdownPrivilege	4656	Stage1.exe
Token: SeUndockPrivilege	4656	Stage1.exe
Token: SeManageVolumePrivilege	4656	Stage1.exe
Token: SeImpersonatePrivilege	4656	Stage1.exe
Token: SeCreateGlobalPrivilege	4656	Stage1.exe
Token: 33	4656	Stage1.exe
Token: 34	4656	Stage1.exe
Token: 35	4656	Stage1.exe
Token: 36	4656	Stage1.exe
Token: SeIncreaseQuotaPrivilege	4976	msdcsc.exe
Token: SeSecurityPrivilege	4976	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4976	msdcsc.exe
Token: SeLoadDriverPrivilege	4976	msdcsc.exe
Token: SeSystemProfilePrivilege	4976	msdcsc.exe
Token: SeSystemtimePrivilege	4976	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4976	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4976	msdcsc.exe
Token: SeCreatePagefilePrivilege	4976	msdcsc.exe
Token: SeBackupPrivilege	4976	msdcsc.exe
Token: SeRestorePrivilege	4976	msdcsc.exe
Token: SeShutdownPrivilege	4976	msdcsc.exe
Token: SeDebugPrivilege	4976	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4976	msdcsc.exe
Token: SeChangeNotifyPrivilege	4976	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4976	msdcsc.exe
Token: SeUndockPrivilege	4976	msdcsc.exe
Token: SeManageVolumePrivilege	4976	msdcsc.exe
Token: SeImpersonatePrivilege	4976	msdcsc.exe
Token: SeCreateGlobalPrivilege	4976	msdcsc.exe
Token: 33	4976	msdcsc.exe
Token: 34	4976	msdcsc.exe
Token: 35	4976	msdcsc.exe
Token: 36	4976	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
4976	msdcsc.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exeStage1.exemsdcsc.exe

description	pid	Process	procid_target
PID 1208 wrote to memory of 2940	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	86
PID 1208 wrote to memory of 2940	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	86
PID 1208 wrote to memory of 2940	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	86
PID 1208 wrote to memory of 4656	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	91
PID 1208 wrote to memory of 4656	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	91
PID 1208 wrote to memory of 4656	1208	f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe	91
PID 4656 wrote to memory of 4976	4656	Stage1.exe	92
PID 4656 wrote to memory of 4976	4656	Stage1.exe	92
PID 4656 wrote to memory of 4976	4656	Stage1.exe	92
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93
PID 4976 wrote to memory of 3280	4976	msdcsc.exe	93

C:\Users\Admin\AppData\Local\Temp\f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6c9055d523b94dd0dd20cb2d59ce039_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\Stage2.exe
  "C:\Users\Admin\AppData\Local\Temp\Stage2.exe" x -y -oC:\Users\Admin\AppData\Local\Temp -pxnq8rPMxVI87ciGwWJHxRTy3iauHcIirteOOELv3B5vkS9kJoHBUAahY1dWxj8yA
  2⤵
  - Executes dropped EXE
  PID:2940
- C:\Users\Admin\AppData\Local\Temp\Stage1.exe
  "C:\Users\Admin\AppData\Local\Temp\Stage1.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4656
- - C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Desktop\MSDCSC\msdcsc.exe"
    3⤵
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4976
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      PID:3280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Stage1.exe

Filesize
350KB

MD5
1a3a42d3d621acd0cce4e26240cc5331

SHA1
02f88aa3ec75ea70e3ac41268127d9e6eb07c1b9

SHA256
f96860108478891f56d8e17d2931a6f4ce9c10a9eade93acc1d7383aff83247a

SHA512
7a104d244128c8ce293a652a247d9351c9d38c9686b2090964898bcfa7c3fd44557f7259e789f29c332a0c099a2934c5b435f98b3432648d14adabf0b6be4e57

Download Submit
C:\Users\Admin\AppData\Local\Temp\Stage2.exe

Filesize
376KB

MD5
d826177f567069f085caf08bd5b3d479

SHA1
3b9d5af3c2e49c11bdf052ac6100e6acf7dbdfdd

SHA256
8be7a28c874ae1121a057b3f12fd3632c8539083d2d95cd7871f6a70e9bd5078

SHA512
752552e39abaf3c518f828d2c3499142b66bc06264e004b5b1cb2ff699a0c6f0d8b342fb141b43c1f7f7de1be4f3ae3b694307a565595d96da35949d552b0c4d

Download Submit
memory/1208-0-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1208-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2940-12-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2940-16-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/3280-36-0x0000000001160000-0x0000000001161000-memory.dmp

Filesize
4KB

Download
memory/4656-19-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4656-20-0x0000000002300000-0x0000000002301000-memory.dmp

Filesize
4KB

Download
memory/4656-32-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-38-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-43-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-34-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/4976-39-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-40-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-41-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-42-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-37-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-44-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-45-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-46-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-47-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-48-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-49-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-50-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4976-51-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download