darkcomet | 94dd31b986c14745370b9d6af9919942e00a98013d3fa1d5d6e857ff8f6d45ec

Analysis

max time kernel
150s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-12-2024 17:50

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General

Target

ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Size

772KB
MD5

ddfa1700270ddb294e420fa5c2f91315
SHA1

5031c370f66fffeb1ff40b3c68ac371063450cd0
SHA256

94dd31b986c14745370b9d6af9919942e00a98013d3fa1d5d6e857ff8f6d45ec
SHA512

e946bca92df1f700570e9e9c978397a6ad027e65cc6e588f8a1592f235d8b1843992735a33be157f9d71dbacbf44383281040f9ba8683115ef039f31b9660617
SSDEEP

12288:j9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hSyC/:tZ1xuVVjfFoynPaVBUR8f+kN10EBK/

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

37.17.158.15:1604

Mutex

DC_MUTEX-C9QWB5Q

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Gv32zCQxtjSP
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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1496	attrib.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	ddfa1700270ddb294e420fa5c2f91315_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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1596	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeSecurityPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeBackupPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeRestorePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeShutdownPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeDebugPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeUndockPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: 33	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: 34	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: 35	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: 36	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1596	msdcsc.exe
Token: SeSecurityPrivilege	1596	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1596	msdcsc.exe
Token: SeLoadDriverPrivilege	1596	msdcsc.exe
Token: SeSystemProfilePrivilege	1596	msdcsc.exe
Token: SeSystemtimePrivilege	1596	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1596	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1596	msdcsc.exe
Token: SeCreatePagefilePrivilege	1596	msdcsc.exe
Token: SeBackupPrivilege	1596	msdcsc.exe
Token: SeRestorePrivilege	1596	msdcsc.exe
Token: SeShutdownPrivilege	1596	msdcsc.exe
Token: SeDebugPrivilege	1596	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1596	msdcsc.exe
Token: SeChangeNotifyPrivilege	1596	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1596	msdcsc.exe
Token: SeUndockPrivilege	1596	msdcsc.exe
Token: SeManageVolumePrivilege	1596	msdcsc.exe
Token: SeImpersonatePrivilege	1596	msdcsc.exe
Token: SeCreateGlobalPrivilege	1596	msdcsc.exe
Token: 33	1596	msdcsc.exe
Token: 34	1596	msdcsc.exe
Token: 35	1596	msdcsc.exe
Token: 36	1596	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1596	msdcsc.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 1968	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	83
PID 4172 wrote to memory of 1968	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	83
PID 4172 wrote to memory of 1968	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	83
PID 1968 wrote to memory of 1496	1968	cmd.exe	85
PID 1968 wrote to memory of 1496	1968	cmd.exe	85
PID 1968 wrote to memory of 1496	1968	cmd.exe	85
PID 4172 wrote to memory of 1596	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	86
PID 4172 wrote to memory of 1596	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	86
PID 4172 wrote to memory of 1596	4172	ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe	86
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87
PID 1596 wrote to memory of 4004	1596	msdcsc.exe	87

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1496	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\ddfa1700270ddb294e420fa5c2f91315_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1496
- C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
  "C:\Windows\system32\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4004

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
772KB

MD5
ddfa1700270ddb294e420fa5c2f91315

SHA1
5031c370f66fffeb1ff40b3c68ac371063450cd0

SHA256
94dd31b986c14745370b9d6af9919942e00a98013d3fa1d5d6e857ff8f6d45ec

SHA512
e946bca92df1f700570e9e9c978397a6ad027e65cc6e588f8a1592f235d8b1843992735a33be157f9d71dbacbf44383281040f9ba8683115ef039f31b9660617

Download Submit
memory/1596-62-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/1596-65-0x0000000000400000-0x00000000004CE000-memory.dmp

Filesize
824KB

Download
memory/1596-67-0x0000000000400000-0x00000000004CE000-memory.dmp

Filesize
824KB

Download
memory/4004-63-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/4172-0-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/4172-64-0x0000000000400000-0x00000000004CE000-memory.dmp

Filesize
824KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads