darkcomet | 3bb11a7d30a3e352b6a1919cdae64b58b8ed6581b5c3dc076a3f563ee88c4d86

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 23:03

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General

Target
761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Size 661KB
Sample240726-21w1hstdnh
SHA256 3bb11a7d30a3e352b6a1919cdae64b58b8ed6581b5c3dc076a3f563ee88c4d86
MD5 761b2ea3d2f05a0b94de32442ff9cd05
SHA1 a03f6454f45d207fb5821f68d4d19e76391876c0
SHA512 3208510fef115b1abaf9eec90c5540a50d239583fb6fce0e6297950deb44936c653d273677ac9e50193a26199ae297162bf5aab3ce1f1bb67eca5b366994b70b
SSDEEP 12288:IXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452U3:unAw2WWeFcfbP9VPSPMTSPL/rWvzq4JH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

jojojijijojo.no-ip.org:7050

Mutex

DC_MUTEX-VJCE7NK

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Qm8S8Vk13fvr
install
true
offline_keylogger
false
password
mutexvisa
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"	761b2ea3d2f05a0b94de32442ff9cd05_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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe

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	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeSecurityPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeBackupPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeRestorePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeShutdownPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeDebugPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeUndockPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: 33	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: 34	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: 35	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: 36	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3120	msdcsc.exe
Token: SeSecurityPrivilege	3120	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3120	msdcsc.exe
Token: SeLoadDriverPrivilege	3120	msdcsc.exe
Token: SeSystemProfilePrivilege	3120	msdcsc.exe
Token: SeSystemtimePrivilege	3120	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3120	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3120	msdcsc.exe
Token: SeCreatePagefilePrivilege	3120	msdcsc.exe
Token: SeBackupPrivilege	3120	msdcsc.exe
Token: SeRestorePrivilege	3120	msdcsc.exe
Token: SeShutdownPrivilege	3120	msdcsc.exe
Token: SeDebugPrivilege	3120	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3120	msdcsc.exe
Token: SeChangeNotifyPrivilege	3120	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3120	msdcsc.exe
Token: SeUndockPrivilege	3120	msdcsc.exe
Token: SeManageVolumePrivilege	3120	msdcsc.exe
Token: SeImpersonatePrivilege	3120	msdcsc.exe
Token: SeCreateGlobalPrivilege	3120	msdcsc.exe
Token: 33	3120	msdcsc.exe
Token: 34	3120	msdcsc.exe
Token: 35	3120	msdcsc.exe
Token: 36	3120	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 3120	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe	91
PID 4696 wrote to memory of 3120	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe	91
PID 4696 wrote to memory of 3120	4696	761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe	91
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93
PID 3120 wrote to memory of 5040	3120	msdcsc.exe	93

C:\Users\Admin\AppData\Local\Temp\761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\761b2ea3d2f05a0b94de32442ff9cd05_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3120
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5040

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

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 661KB
SHA256 3bb11a7d30a3e352b6a1919cdae64b58b8ed6581b5c3dc076a3f563ee88c4d86
MD5 761b2ea3d2f05a0b94de32442ff9cd05
SHA1 a03f6454f45d207fb5821f68d4d19e76391876c0
SHA512 3208510fef115b1abaf9eec90c5540a50d239583fb6fce0e6297950deb44936c653d273677ac9e50193a26199ae297162bf5aab3ce1f1bb67eca5b366994b70b
SSDEEP 12288:IXhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452U3:unAw2WWeFcfbP9VPSPMTSPL/rWvzq4JH
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3120-23-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-22-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-14-0x0000000002850000-0x0000000002851000-memory.dmp

Download

memory/3120-29-0x0000000000400000-0x00000000004B5000-memory.dmp

Download

memory/3120-16-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-17-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-18-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-19-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-28-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-20-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-21-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-27-0x0000000000400000-0x00000000004B5000-memory.dmp

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memory/3120-24-0x0000000000400000-0x00000000004B5000-memory.dmp

Download

memory/3120-25-0x0000000000400000-0x00000000004B5000-memory.dmp

Download

memory/3120-26-0x0000000000400000-0x00000000004B5000-memory.dmp

Download

memory/4696-0-0x00000000006B0000-0x00000000006B1000-memory.dmp

Download

memory/4696-13-0x0000000000400000-0x00000000004B5000-memory.dmp

Download

memory/5040-15-0x0000000000670000-0x0000000000671000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads