darkcomet | 423fc644a8ba25e3aa1d762aa7d8674a9cd48c395a748bfab6bf2313b53c0fbb

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 23:23

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General

Target

JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Size

349KB
MD5

614542b000a8b8b16a4efbe1cc858740
SHA1

20a24f0950628023df472120fcc12c1f3fe603ca
SHA256

423fc644a8ba25e3aa1d762aa7d8674a9cd48c395a748bfab6bf2313b53c0fbb
SHA512

8e818ca26381769342da858eade9f23263327931475895509665d35bccd579e3e14ba373a1696410adce4264fb99c5e1b350ccdf17f8e92872d7b4540057cef2
SSDEEP

6144:EcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37EBLLjMdWnpQZh9h4:EcW7KEZlPzCy37ElMd0QZh9u

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

24.132.152.63:1605

Mutex

DC_MUTEX-8C4KB26

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
cQhexEAS5vGC
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
Darkcomet family
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"	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe

Executes dropped EXE 1 IoCs

pid	Process
2020	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2020 set thread context of 2660	2020	msdcsc.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1648-0-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/files/0x0007000000023ca2-6.dat	upx
behavioral2/memory/2660-63-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/2020-65-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/1648-66-0x0000000000400000-0x00000000004E8000-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 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeSecurityPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeTakeOwnershipPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeLoadDriverPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeSystemProfilePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeSystemtimePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeProfSingleProcessPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeIncBasePriorityPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeCreatePagefilePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeBackupPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeRestorePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeShutdownPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeDebugPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeSystemEnvironmentPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeChangeNotifyPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeRemoteShutdownPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeUndockPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeManageVolumePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeImpersonatePrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeCreateGlobalPrivilege	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: 33	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: 34	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: 35	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: 36	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
Token: SeIncreaseQuotaPrivilege	2020	msdcsc.exe
Token: SeSecurityPrivilege	2020	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2020	msdcsc.exe
Token: SeLoadDriverPrivilege	2020	msdcsc.exe
Token: SeSystemProfilePrivilege	2020	msdcsc.exe
Token: SeSystemtimePrivilege	2020	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2020	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2020	msdcsc.exe
Token: SeCreatePagefilePrivilege	2020	msdcsc.exe
Token: SeBackupPrivilege	2020	msdcsc.exe
Token: SeRestorePrivilege	2020	msdcsc.exe
Token: SeShutdownPrivilege	2020	msdcsc.exe
Token: SeDebugPrivilege	2020	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2020	msdcsc.exe
Token: SeChangeNotifyPrivilege	2020	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2020	msdcsc.exe
Token: SeUndockPrivilege	2020	msdcsc.exe
Token: SeManageVolumePrivilege	2020	msdcsc.exe
Token: SeImpersonatePrivilege	2020	msdcsc.exe
Token: SeCreateGlobalPrivilege	2020	msdcsc.exe
Token: 33	2020	msdcsc.exe
Token: 34	2020	msdcsc.exe
Token: 35	2020	msdcsc.exe
Token: 36	2020	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	2660	iexplore.exe
Token: SeSecurityPrivilege	2660	iexplore.exe
Token: SeTakeOwnershipPrivilege	2660	iexplore.exe
Token: SeLoadDriverPrivilege	2660	iexplore.exe
Token: SeSystemProfilePrivilege	2660	iexplore.exe
Token: SeSystemtimePrivilege	2660	iexplore.exe
Token: SeProfSingleProcessPrivilege	2660	iexplore.exe
Token: SeIncBasePriorityPrivilege	2660	iexplore.exe
Token: SeCreatePagefilePrivilege	2660	iexplore.exe
Token: SeBackupPrivilege	2660	iexplore.exe
Token: SeRestorePrivilege	2660	iexplore.exe
Token: SeShutdownPrivilege	2660	iexplore.exe
Token: SeDebugPrivilege	2660	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2660	iexplore.exe
Token: SeChangeNotifyPrivilege	2660	iexplore.exe
Token: SeRemoteShutdownPrivilege	2660	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2660	iexplore.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2020	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe	83
PID 1648 wrote to memory of 2020	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe	83
PID 1648 wrote to memory of 2020	1648	JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe	83
PID 2020 wrote to memory of 2660	2020	msdcsc.exe	84
PID 2020 wrote to memory of 2660	2020	msdcsc.exe	84
PID 2020 wrote to memory of 2660	2020	msdcsc.exe	84
PID 2020 wrote to memory of 2660	2020	msdcsc.exe	84
PID 2020 wrote to memory of 2660	2020	msdcsc.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_614542b000a8b8b16a4efbe1cc858740.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:1648
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2660

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

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Downloads

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

Filesize
349KB

MD5
614542b000a8b8b16a4efbe1cc858740

SHA1
20a24f0950628023df472120fcc12c1f3fe603ca

SHA256
423fc644a8ba25e3aa1d762aa7d8674a9cd48c395a748bfab6bf2313b53c0fbb

SHA512
8e818ca26381769342da858eade9f23263327931475895509665d35bccd579e3e14ba373a1696410adce4264fb99c5e1b350ccdf17f8e92872d7b4540057cef2

Download Submit
memory/1648-0-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/1648-1-0x00000000024C0000-0x00000000024C1000-memory.dmp

Filesize
4KB

Download
memory/1648-66-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2020-62-0x0000000000900000-0x0000000000901000-memory.dmp

Filesize
4KB

Download
memory/2020-65-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/2660-63-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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