darkcomet | 91a04cda5888aa5c4e0e8cdd09d5576836d3714c39446a510ddb7f88ae372ae4

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-04-2024 14:02

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General

Target

ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Size

891KB
MD5

ea271405c5d515469356a082f5a16dd6
SHA1

bf2b2451d4d8e656067c81cf14362b9702ed7a57
SHA256

91a04cda5888aa5c4e0e8cdd09d5576836d3714c39446a510ddb7f88ae372ae4
SHA512

dc3c5ea202e4e311cbc35dc8d53b616bf657de01d91da9ce0e92ed39616424b3002035e41fe915791ba53f9b8822ea2c9100b22777ea0a4dac438be71a283440
SSDEEP

24576:kKtgTB/3lPQZLh9h5qKUpEZl8fCjDS/2V0cs3:TAB/gLhw/ajDo2V0cK

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

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"	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.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

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe

Executes dropped EXE 3 IoCs

pid	Process
3144	FACEBOOK.EXE
5920	msdcsc.exe
5940	msdcsc.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1644-4-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/1644-6-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/1644-8-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/1644-10-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/1644-9-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/files/0x0003000000022d25-18.dat	upx
behavioral2/memory/3144-24-0x0000000000400000-0x00000000004C1000-memory.dmp	upx
behavioral2/memory/1644-38-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/5940-46-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/5940-48-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/5940-50-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/5940-52-0x0000000000400000-0x000000000054C000-memory.dmp	upx
behavioral2/memory/3144-59-0x0000000000400000-0x00000000004C1000-memory.dmp	upx

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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicrosoftUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	checkip.dyndns.org

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3144-59-0x0000000000400000-0x00000000004C1000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1428 set thread context of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 5920 set thread context of 5940	5920	msdcsc.exe	98
PID 5940 set thread context of 6020	5940	msdcsc.exe	99

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3144	FACEBOOK.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeSecurityPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeBackupPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeRestorePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeShutdownPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeDebugPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeUndockPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: 33	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: 34	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: 35	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: 36	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5940	msdcsc.exe
Token: SeSecurityPrivilege	5940	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5940	msdcsc.exe
Token: SeLoadDriverPrivilege	5940	msdcsc.exe
Token: SeSystemProfilePrivilege	5940	msdcsc.exe
Token: SeSystemtimePrivilege	5940	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5940	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5940	msdcsc.exe
Token: SeCreatePagefilePrivilege	5940	msdcsc.exe
Token: SeBackupPrivilege	5940	msdcsc.exe
Token: SeRestorePrivilege	5940	msdcsc.exe
Token: SeShutdownPrivilege	5940	msdcsc.exe
Token: SeDebugPrivilege	5940	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5940	msdcsc.exe
Token: SeChangeNotifyPrivilege	5940	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5940	msdcsc.exe
Token: SeUndockPrivilege	5940	msdcsc.exe
Token: SeManageVolumePrivilege	5940	msdcsc.exe
Token: SeImpersonatePrivilege	5940	msdcsc.exe
Token: SeCreateGlobalPrivilege	5940	msdcsc.exe
Token: 33	5940	msdcsc.exe
Token: 34	5940	msdcsc.exe
Token: 35	5940	msdcsc.exe
Token: 36	5940	msdcsc.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3144	FACEBOOK.EXE
3144	FACEBOOK.EXE
3144	FACEBOOK.EXE

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3144	FACEBOOK.EXE
3144	FACEBOOK.EXE
3144	FACEBOOK.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
5920	msdcsc.exe
6020	iexplore.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1428 wrote to memory of 1644	1428	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	95
PID 1644 wrote to memory of 3144	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	96
PID 1644 wrote to memory of 3144	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	96
PID 1644 wrote to memory of 3144	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	96
PID 1644 wrote to memory of 5920	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	97
PID 1644 wrote to memory of 5920	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	97
PID 1644 wrote to memory of 5920	1644	ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe	97
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5920 wrote to memory of 5940	5920	msdcsc.exe	98
PID 5940 wrote to memory of 6020	5940	msdcsc.exe	99
PID 5940 wrote to memory of 6020	5940	msdcsc.exe	99
PID 5940 wrote to memory of 6020	5940	msdcsc.exe	99
PID 5940 wrote to memory of 6020	5940	msdcsc.exe	99
PID 5940 wrote to memory of 6020	5940	msdcsc.exe	99

C:\Users\Admin\AppData\Local\Temp\ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Users\Admin\AppData\Local\Temp\ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\ea271405c5d515469356a082f5a16dd6_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE
    "C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3144
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5920
  - - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Executes dropped EXE
      Windows security modification
      Suspicious use of SetThreadContext
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:5940
    - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
        
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        5⤵
        Suspicious use of SetWindowsHookEx
        
        PID:6020

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5088

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE

Filesize
409KB

MD5
a376b12add1f0341b8eb607994171a8d

SHA1
833518195776950b175cf681de819a249a5142a6

SHA256
c1bb4bbdca067c0419c4f1ddf1ef48b77dc4c8221d6fc6c3dcc1921b4d02299e

SHA512
4445fff21b4bae2dc56293b14ef55769423afab59eecc91b77ae05f17d87335eee41ffcad4bbfc71f7e47de4ff839b1e80e52c8d9554eb5dd110a33cc24a1b63

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3808065738-1666277613-1125846146-1000\699c4b9cdebca7aaea5193cae8a50098_2397ee06-28fe-4eaa-8777-f7014368c353

Filesize
50B

MD5
5b63d4dd8c04c88c0e30e494ec6a609a

SHA1
884d5a8bdc25fe794dc22ef9518009dcf0069d09

SHA256
4d93c22555b3169e5c13716ca59b8b22892c69b3025aea841afe5259698102fd

SHA512
15ff8551ac6b9de978050569bcdc26f44dfc06a0eaf445ac70fd45453a21bdafa3e4c8b4857d6a1c3226f4102a639682bdfb71d7b255062fb81a51c9126896cb

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
891KB

MD5
ea271405c5d515469356a082f5a16dd6

SHA1
bf2b2451d4d8e656067c81cf14362b9702ed7a57

SHA256
91a04cda5888aa5c4e0e8cdd09d5576836d3714c39446a510ddb7f88ae372ae4

SHA512
dc3c5ea202e4e311cbc35dc8d53b616bf657de01d91da9ce0e92ed39616424b3002035e41fe915791ba53f9b8822ea2c9100b22777ea0a4dac438be71a283440

Download Submit
memory/1428-0-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1428-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1644-10-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/1644-11-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download
memory/1644-8-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/1644-6-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/1644-4-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/1644-38-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/1644-9-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/3144-59-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3144-24-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/5920-36-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/5920-45-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/5940-46-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/5940-50-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/5940-49-0x0000000000760000-0x0000000000761000-memory.dmp

Filesize
4KB

Download
memory/5940-52-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/5940-48-0x0000000000400000-0x000000000054C000-memory.dmp

Filesize
1.3MB

Download
memory/6020-51-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads