darkcomet | c22526e0f3e8a979d8c90234d7084957197c63aa3620b4833bc5bcaaa85dff0f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 01:36

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General

Target
3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Size 251KB
Sample240511-b1gmqage69
SHA256 c22526e0f3e8a979d8c90234d7084957197c63aa3620b4833bc5bcaaa85dff0f
MD5 3210930bf68d390399931d87ddc44a51
SHA1 470d41913f372b7c0c81822acb0a54a9ae66a576
SHA512 e4683517df8aaa21f5b0cfcf10fdaae43160a16888b34774e1307b2122bf754bb34a24b384a4148e17df62999494dd03a74d2ba9bc49293ccdd496dd04e00c43
SSDEEP 6144:CcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37:CcW7KEZlPzCy37
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

unknown459.dlinkddns.com:1604

Mutex

DC_MUTEX-VRVKV6B

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
XcQ3dnx409Jz
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

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"	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

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

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

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3864	attrib.exe
4596	attrib.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3784	msdcsc.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4148-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0008000000023422-6.dat	upx
behavioral2/memory/4148-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3784-80-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Windows security modification 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

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\\Documents\\MSDCSC\\msdcsc.exe"	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeSecurityPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeBackupPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeRestorePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeShutdownPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeDebugPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeUndockPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: 33	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: 34	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: 35	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: 36	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3784	msdcsc.exe
Token: SeSecurityPrivilege	3784	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3784	msdcsc.exe
Token: SeLoadDriverPrivilege	3784	msdcsc.exe
Token: SeSystemProfilePrivilege	3784	msdcsc.exe
Token: SeSystemtimePrivilege	3784	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3784	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3784	msdcsc.exe
Token: SeCreatePagefilePrivilege	3784	msdcsc.exe
Token: SeBackupPrivilege	3784	msdcsc.exe
Token: SeRestorePrivilege	3784	msdcsc.exe
Token: SeShutdownPrivilege	3784	msdcsc.exe
Token: SeDebugPrivilege	3784	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3784	msdcsc.exe
Token: SeChangeNotifyPrivilege	3784	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3784	msdcsc.exe
Token: SeUndockPrivilege	3784	msdcsc.exe
Token: SeManageVolumePrivilege	3784	msdcsc.exe
Token: SeImpersonatePrivilege	3784	msdcsc.exe
Token: SeCreateGlobalPrivilege	3784	msdcsc.exe
Token: 33	3784	msdcsc.exe
Token: 34	3784	msdcsc.exe
Token: 35	3784	msdcsc.exe
Token: 36	3784	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3784	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 3128	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	82
PID 4148 wrote to memory of 3128	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	82
PID 4148 wrote to memory of 3128	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	82
PID 4148 wrote to memory of 1476	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	83
PID 4148 wrote to memory of 1476	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	83
PID 4148 wrote to memory of 1476	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	83
PID 1476 wrote to memory of 4596	1476	cmd.exe	86
PID 1476 wrote to memory of 4596	1476	cmd.exe	86
PID 1476 wrote to memory of 4596	1476	cmd.exe	86
PID 3128 wrote to memory of 3864	3128	cmd.exe	87
PID 3128 wrote to memory of 3864	3128	cmd.exe	87
PID 3128 wrote to memory of 3864	3128	cmd.exe	87
PID 4148 wrote to memory of 3784	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	88
PID 4148 wrote to memory of 3784	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	88
PID 4148 wrote to memory of 3784	4148	3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe	88
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89
PID 3784 wrote to memory of 2904	3784	msdcsc.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4596	attrib.exe
3864	attrib.exe

C:\Users\Admin\AppData\Local\Temp\3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3128
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\3210930bf68d390399931d87ddc44a51_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:3864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4596
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - 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:3784
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2904

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

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msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 251KB
SHA256 c22526e0f3e8a979d8c90234d7084957197c63aa3620b4833bc5bcaaa85dff0f
MD5 3210930bf68d390399931d87ddc44a51
SHA1 470d41913f372b7c0c81822acb0a54a9ae66a576
SHA512 e4683517df8aaa21f5b0cfcf10fdaae43160a16888b34774e1307b2122bf754bb34a24b384a4148e17df62999494dd03a74d2ba9bc49293ccdd496dd04e00c43
SSDEEP 6144:CcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37:CcW7KEZlPzCy37
MD5 SHA1 SHA512 SSDEEP

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memory/2904-63-0x0000000000D00000-0x0000000000D01000-memory.dmp

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memory/3784-75-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-71-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-80-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-79-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-66-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-67-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-68-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-69-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-70-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-62-0x0000000000870000-0x0000000000871000-memory.dmp

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memory/3784-72-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-73-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-74-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-78-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-76-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3784-77-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4148-0-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4148-65-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4148-1-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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