darkcomet | d4f6824fcfac08808c07fdc5127abcb1df78cb6ba4fb4689a56413b24ace19d5

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 01:33

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General

Target
1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Size 421KB
Sample240627-by1mtaycnn
SHA256 d4f6824fcfac08808c07fdc5127abcb1df78cb6ba4fb4689a56413b24ace19d5
MD5 1435c8d7a0157784e181d48ea5aa24b3
SHA1 dfa8c21ef3373153160a29324073fb9e875dc1fe
SHA512 b92579de58cee65f63066c2891c6aa38151d55f81973a3fff8701f0e94aae8fd14fa0fe652c0de48b1040ba2fc46a0999db6f2a1eede803db63f90f6df482b3e
SSDEEP 12288:HVr5qkjoiEzoU4qjGiybs1df5WNm3C/OpRh+6cn:1ckUpUU4q3gs1dfAmoOfh+6cn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet ãóßíä evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

ãÓßíä

aniss1.no-ip.biz:81

Mutex

DC_MUTEX-SCE46ML

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
CQl4sBMa8TLp
install
true
offline_keylogger
true
password
123
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"	1435c8d7a0157784e181d48ea5aa24b3_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 2 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
4704	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-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1664	msdcsc.exe

Windows security modification 2 TTPs 2 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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "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-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3444	4656	WerFault.exe	87

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1664	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeSecurityPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeBackupPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeRestorePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeShutdownPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeDebugPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeUndockPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: 33	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: 34	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: 35	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: 36	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1664	msdcsc.exe
Token: SeSecurityPrivilege	1664	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1664	msdcsc.exe
Token: SeLoadDriverPrivilege	1664	msdcsc.exe
Token: SeSystemProfilePrivilege	1664	msdcsc.exe
Token: SeSystemtimePrivilege	1664	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1664	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1664	msdcsc.exe
Token: SeCreatePagefilePrivilege	1664	msdcsc.exe
Token: SeBackupPrivilege	1664	msdcsc.exe
Token: SeRestorePrivilege	1664	msdcsc.exe
Token: SeShutdownPrivilege	1664	msdcsc.exe
Token: SeDebugPrivilege	1664	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1664	msdcsc.exe
Token: SeChangeNotifyPrivilege	1664	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1664	msdcsc.exe
Token: SeUndockPrivilege	1664	msdcsc.exe
Token: SeManageVolumePrivilege	1664	msdcsc.exe
Token: SeImpersonatePrivilege	1664	msdcsc.exe
Token: SeCreateGlobalPrivilege	1664	msdcsc.exe
Token: 33	1664	msdcsc.exe
Token: 34	1664	msdcsc.exe
Token: 35	1664	msdcsc.exe
Token: 36	1664	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1664	msdcsc.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 3712	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	83
PID 3472 wrote to memory of 3712	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	83
PID 3472 wrote to memory of 3712	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	83
PID 3712 wrote to memory of 4704	3712	cmd.exe	85
PID 3712 wrote to memory of 4704	3712	cmd.exe	85
PID 3712 wrote to memory of 4704	3712	cmd.exe	85
PID 3472 wrote to memory of 1664	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	86
PID 3472 wrote to memory of 1664	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	86
PID 3472 wrote to memory of 1664	3472	1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe	86
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87
PID 1664 wrote to memory of 4656	1664	msdcsc.exe	87

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4704	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1435c8d7a0157784e181d48ea5aa24b3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1435c8d7a0157784e181d48ea5aa24b3_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:3472
- 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:3712
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4704
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1664
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:4656
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 416
      4⤵
      Program crash
      PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4656 -ip 4656
1⤵
PID:1556

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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Downloads

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 421KB
SHA256 d4f6824fcfac08808c07fdc5127abcb1df78cb6ba4fb4689a56413b24ace19d5
MD5 1435c8d7a0157784e181d48ea5aa24b3
SHA1 dfa8c21ef3373153160a29324073fb9e875dc1fe
SHA512 b92579de58cee65f63066c2891c6aa38151d55f81973a3fff8701f0e94aae8fd14fa0fe652c0de48b1040ba2fc46a0999db6f2a1eede803db63f90f6df482b3e
SSDEEP 12288:HVr5qkjoiEzoU4qjGiybs1df5WNm3C/OpRh+6cn:1ckUpUU4q3gs1dfAmoOfh+6cn
MD5 SHA1 SHA512 SSDEEP

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memory/1664-77-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-74-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-63-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-64-0x00000000023F0000-0x00000000023F1000-memory.dmp

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memory/1664-83-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-82-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-69-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-70-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-71-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-72-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-81-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-75-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-73-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-76-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-80-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-78-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/1664-79-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/3472-0-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/3472-1-0x0000000002500000-0x0000000002501000-memory.dmp

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memory/3472-68-0x0000000000400000-0x00000000004D4150-memory.dmp

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memory/4656-65-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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