darkcomet | e36e5cab75ee373765d6ca5675f920d0ce9afe3203ac64dd36ee658ef6fdff19

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-10-2024 03:24

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General

Target

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Size

350KB
MD5

5a998b58982968c8b35585f8b7509d3c
SHA1

10bc0bf12dfb10267a671249a3c6b7586230bb02
SHA256

e36e5cab75ee373765d6ca5675f920d0ce9afe3203ac64dd36ee658ef6fdff19
SHA512

e91ccc719bd9f0ab8c6324ae5dfe623f9eec0d5e47039cc99c12e171de75c45da56242adea3e6b462ad822829c0c5234da9e6118378494641c68f96b8a29eccd
SSDEEP

6144:lD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZqu:ll8E4w5huat7UovONzbXw

Score

10^/10

darkcomet bulbul discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

bulbul

shonk.no-ip.biz:1604

Mutex

DC_MUTEX-XNC0BWQ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gb8tsVvY5V3X
install
true
offline_keylogger
true
persistence
false
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:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

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"	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.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

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
5012	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4700-0-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/files/0x000b000000023b7c-6.dat	upx
behavioral2/memory/4700-63-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-65-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-66-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-68-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-69-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-70-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-71-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-72-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-73-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-74-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-75-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-76-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-77-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-78-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-79-0x0000000000400000-0x00000000004EB000-memory.dmp	upx
behavioral2/memory/5012-80-0x0000000000400000-0x00000000004EB000-memory.dmp	upx

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

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeSecurityPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeBackupPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeRestorePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeShutdownPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeDebugPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeUndockPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: 33	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: 34	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: 35	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: 36	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5012	msdcsc.exe
Token: SeSecurityPrivilege	5012	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5012	msdcsc.exe
Token: SeLoadDriverPrivilege	5012	msdcsc.exe
Token: SeSystemProfilePrivilege	5012	msdcsc.exe
Token: SeSystemtimePrivilege	5012	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5012	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5012	msdcsc.exe
Token: SeCreatePagefilePrivilege	5012	msdcsc.exe
Token: SeBackupPrivilege	5012	msdcsc.exe
Token: SeRestorePrivilege	5012	msdcsc.exe
Token: SeShutdownPrivilege	5012	msdcsc.exe
Token: SeDebugPrivilege	5012	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5012	msdcsc.exe
Token: SeChangeNotifyPrivilege	5012	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5012	msdcsc.exe
Token: SeUndockPrivilege	5012	msdcsc.exe
Token: SeManageVolumePrivilege	5012	msdcsc.exe
Token: SeImpersonatePrivilege	5012	msdcsc.exe
Token: SeCreateGlobalPrivilege	5012	msdcsc.exe
Token: 33	5012	msdcsc.exe
Token: 34	5012	msdcsc.exe
Token: 35	5012	msdcsc.exe
Token: 36	5012	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
5012	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4700 wrote to memory of 5012	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe	85
PID 4700 wrote to memory of 5012	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe	85
PID 4700 wrote to memory of 5012	4700	5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5a998b58982968c8b35585f8b7509d3c_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5012

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
350KB

MD5
5a998b58982968c8b35585f8b7509d3c

SHA1
10bc0bf12dfb10267a671249a3c6b7586230bb02

SHA256
e36e5cab75ee373765d6ca5675f920d0ce9afe3203ac64dd36ee658ef6fdff19

SHA512
e91ccc719bd9f0ab8c6324ae5dfe623f9eec0d5e47039cc99c12e171de75c45da56242adea3e6b462ad822829c0c5234da9e6118378494641c68f96b8a29eccd

Download Submit
memory/4700-0-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4700-1-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/4700-63-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-70-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-73-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-67-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/5012-66-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-68-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-69-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-64-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/5012-71-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-72-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-65-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-74-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-75-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-76-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-77-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-78-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-79-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/5012-80-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download