darkcomet | d3a4ebd2f8291633618bbec77f27b8c9bd7fef27e60a47c206f3d8c41aeded6c

Analysis

max time kernel
141s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-10-2024 16:37

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General

Target

4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe
Size

898KB
MD5

4de1c5485e4e5193eea571dbc6d0606d
SHA1

81b4123710e7f6a012b6680be179671586c85f66
SHA256

d3a4ebd2f8291633618bbec77f27b8c9bd7fef27e60a47c206f3d8c41aeded6c
SHA512

d292b84daeefbb1166e61f718760aa1d44f7ec195f7948633e87e369cf236ec4d67c314611941903205ff077ca9de1894c7805d181a27bedc857616d4e68bc03
SSDEEP

24576:3dQoweo+5d5lW4T0LReq86st68g6if0uGbS21tA23:3dQGo8h41iDghWSi

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

95.79.31.101:1604

Mutex

DC_MUTEX-E2ZGDTS

Attributes

InstallPath
MSDCSC\svchost.exe
gencode
rW8pc78Q0Uk7
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

2929.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\\svchost.exe"	2929.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe2929.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2929.exe

Executes dropped EXE 3 IoCs

Processes:

2929.exeHardDiskSerialNumberChanger.exesvchost.exe

pid	Process
3040	2929.exe
2308	HardDiskSerialNumberChanger.exe
4044	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2929.exesvchost.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\\svchost.exe"	2929.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\svchost.exe"	svchost.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

HardDiskSerialNumberChanger.exe

description	ioc	Process
File opened (read-only)	\??\A:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\H:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\U:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\Y:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\G:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\O:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\R:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\X:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\Z:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\E:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\K:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\L:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\M:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\S:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\T:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\V:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\W:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\B:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\I:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\J:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\N:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\P:	HardDiskSerialNumberChanger.exe
File opened (read-only)	\??\Q:	HardDiskSerialNumberChanger.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 5 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:

2929.exeHardDiskSerialNumberChanger.exenotepad.exesvchost.exe4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2929.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HardDiskSerialNumberChanger.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe

Modifies registry class 1 IoCs

Processes:

2929.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	2929.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

2929.exesvchost.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3040	2929.exe
Token: SeSecurityPrivilege	3040	2929.exe
Token: SeTakeOwnershipPrivilege	3040	2929.exe
Token: SeLoadDriverPrivilege	3040	2929.exe
Token: SeSystemProfilePrivilege	3040	2929.exe
Token: SeSystemtimePrivilege	3040	2929.exe
Token: SeProfSingleProcessPrivilege	3040	2929.exe
Token: SeIncBasePriorityPrivilege	3040	2929.exe
Token: SeCreatePagefilePrivilege	3040	2929.exe
Token: SeBackupPrivilege	3040	2929.exe
Token: SeRestorePrivilege	3040	2929.exe
Token: SeShutdownPrivilege	3040	2929.exe
Token: SeDebugPrivilege	3040	2929.exe
Token: SeSystemEnvironmentPrivilege	3040	2929.exe
Token: SeChangeNotifyPrivilege	3040	2929.exe
Token: SeRemoteShutdownPrivilege	3040	2929.exe
Token: SeUndockPrivilege	3040	2929.exe
Token: SeManageVolumePrivilege	3040	2929.exe
Token: SeImpersonatePrivilege	3040	2929.exe
Token: SeCreateGlobalPrivilege	3040	2929.exe
Token: 33	3040	2929.exe
Token: 34	3040	2929.exe
Token: 35	3040	2929.exe
Token: 36	3040	2929.exe
Token: SeIncreaseQuotaPrivilege	4044	svchost.exe
Token: SeSecurityPrivilege	4044	svchost.exe
Token: SeTakeOwnershipPrivilege	4044	svchost.exe
Token: SeLoadDriverPrivilege	4044	svchost.exe
Token: SeSystemProfilePrivilege	4044	svchost.exe
Token: SeSystemtimePrivilege	4044	svchost.exe
Token: SeProfSingleProcessPrivilege	4044	svchost.exe
Token: SeIncBasePriorityPrivilege	4044	svchost.exe
Token: SeCreatePagefilePrivilege	4044	svchost.exe
Token: SeBackupPrivilege	4044	svchost.exe
Token: SeRestorePrivilege	4044	svchost.exe
Token: SeShutdownPrivilege	4044	svchost.exe
Token: SeDebugPrivilege	4044	svchost.exe
Token: SeSystemEnvironmentPrivilege	4044	svchost.exe
Token: SeChangeNotifyPrivilege	4044	svchost.exe
Token: SeRemoteShutdownPrivilege	4044	svchost.exe
Token: SeUndockPrivilege	4044	svchost.exe
Token: SeManageVolumePrivilege	4044	svchost.exe
Token: SeImpersonatePrivilege	4044	svchost.exe
Token: SeCreateGlobalPrivilege	4044	svchost.exe
Token: 33	4044	svchost.exe
Token: 34	4044	svchost.exe
Token: 35	4044	svchost.exe
Token: 36	4044	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid	Process
4044	svchost.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe2929.exe

description	pid	Process	procid_target
PID 2156 wrote to memory of 3040	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	84
PID 2156 wrote to memory of 3040	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	84
PID 2156 wrote to memory of 3040	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	84
PID 2156 wrote to memory of 2308	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	85
PID 2156 wrote to memory of 2308	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	85
PID 2156 wrote to memory of 2308	2156	4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe	85
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 3332	3040	2929.exe	86
PID 3040 wrote to memory of 4044	3040	2929.exe	89
PID 3040 wrote to memory of 4044	3040	2929.exe	89
PID 3040 wrote to memory of 4044	3040	2929.exe	89

C:\Users\Admin\AppData\Local\Temp\4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4de1c5485e4e5193eea571dbc6d0606d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\2929.exe
  "C:\Users\Admin\AppData\Local\Temp\2929.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3332
- - C:\Users\Admin\Documents\MSDCSC\svchost.exe
    "C:\Users\Admin\Documents\MSDCSC\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4044
- C:\Users\Admin\AppData\Local\Temp\HardDiskSerialNumberChanger.exe
  "C:\Users\Admin\AppData\Local\Temp\HardDiskSerialNumberChanger.exe"
  2⤵
  - Executes dropped EXE
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  PID:2308

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

Peripheral Device Discovery

T1120

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\AppData\Local\Temp\2929.exe

Filesize
690KB

MD5
1c1e287690221213a5a450e099a57c38

SHA1
3406b8d85028fdd610a656e8bcc792b918576456

SHA256
4c4f37f35696c74f98a3eb4231f520f03a1b7d797ff2ef3751ad411f722ef593

SHA512
0f669c05d7857fbd68fac19bab740dce81904d7c74531e96f7ddb2ba5fb1d648649cc284fcc03a62a08b47054a0c2e94391fe8bac0e5ec9c592eb441c40441c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\HardDiskSerialNumberChanger.exe

Filesize
636KB

MD5
c20e96d4e616ce333c19a1c15a1cc137

SHA1
f79645ec115130ee59958c55a556f564260b7a9e

SHA256
2c141c06f7df57f11ef2c62f2a96093484a65df47065b1a475c53784af0e2664

SHA512
519fec9955c4a18e45ec68d9e7dc2bcda74721a6ea088e59e634e26b136bfa15f5efedf8839c036a3cfdcdb9780a2121dc2d71f1fdbbfd3df02d9969e5db753b

Download Submit
memory/2308-25-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/2308-86-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/3040-20-0x00000000023F0000-0x00000000023F1000-memory.dmp

Filesize
4KB

Download
memory/3040-84-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3332-24-0x00000000012D0000-0x00000000012D1000-memory.dmp

Filesize
4KB

Download
memory/4044-87-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4044-89-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download