darkcomet | 170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5

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
19-10-2024 15:22

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General

Target

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Size

756KB
MD5

5d4944507c05892008b66b2ba9474af5
SHA1

1ccd3a438221a9cada327f019e90bfedefca23ea
SHA256

170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5
SHA512

65b5e10613f07c99cab45fcf66336605d8a718d4d263d215a33c30a48d0626ec2eae7e16592c307e46d971fcc7ab1ea2b738657770d624bee1fc88e21a1ec744
SSDEEP

12288:E9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hTI:IZ1xuVVjfFoynPaVBUR8f+kN10EBBI

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

arkanorg.no-ip.org:1604

Mutex

DC_MUTEX-UFK9EQ8

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
d1vpG230T6sj
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:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

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"	5d4944507c05892008b66b2ba9474af5_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

Processes:

attrib.exe

pid	Process
4184	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

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
2604	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exemsdcsc.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	5d4944507c05892008b66b2ba9474af5_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

Processes:

attrib.exemsdcsc.exenotepad.exe5d4944507c05892008b66b2ba9474af5_JaffaCakes118.execmd.exe

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
2604	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSecurityPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeBackupPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeRestorePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeShutdownPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeDebugPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeUndockPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 33	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 34	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 35	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: 36	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2604	msdcsc.exe
Token: SeSecurityPrivilege	2604	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2604	msdcsc.exe
Token: SeLoadDriverPrivilege	2604	msdcsc.exe
Token: SeSystemProfilePrivilege	2604	msdcsc.exe
Token: SeSystemtimePrivilege	2604	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2604	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2604	msdcsc.exe
Token: SeCreatePagefilePrivilege	2604	msdcsc.exe
Token: SeBackupPrivilege	2604	msdcsc.exe
Token: SeRestorePrivilege	2604	msdcsc.exe
Token: SeShutdownPrivilege	2604	msdcsc.exe
Token: SeDebugPrivilege	2604	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2604	msdcsc.exe
Token: SeChangeNotifyPrivilege	2604	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2604	msdcsc.exe
Token: SeUndockPrivilege	2604	msdcsc.exe
Token: SeManageVolumePrivilege	2604	msdcsc.exe
Token: SeImpersonatePrivilege	2604	msdcsc.exe
Token: SeCreateGlobalPrivilege	2604	msdcsc.exe
Token: 33	2604	msdcsc.exe
Token: 34	2604	msdcsc.exe
Token: 35	2604	msdcsc.exe
Token: 36	2604	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
2604	msdcsc.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

5d4944507c05892008b66b2ba9474af5_JaffaCakes118.execmd.exemsdcsc.exe

description	pid	Process	procid_target
PID 2992 wrote to memory of 2204	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	92
PID 2992 wrote to memory of 2204	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	92
PID 2992 wrote to memory of 2204	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	92
PID 2204 wrote to memory of 4184	2204	cmd.exe	94
PID 2204 wrote to memory of 4184	2204	cmd.exe	94
PID 2204 wrote to memory of 4184	2204	cmd.exe	94
PID 2992 wrote to memory of 2604	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	95
PID 2992 wrote to memory of 2604	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	95
PID 2992 wrote to memory of 2604	2992	5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe	95
PID 2604 wrote to memory of 3912	2604	msdcsc.exe	96
PID 2604 wrote to memory of 3912	2604	msdcsc.exe	96
PID 2604 wrote to memory of 3912	2604	msdcsc.exe	96
PID 2604 wrote to memory of 864	2604	msdcsc.exe	97
PID 2604 wrote to memory of 864	2604	msdcsc.exe	97
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98
PID 2604 wrote to memory of 2908	2604	msdcsc.exe	98

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exe

pid	Process
4184	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_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:2992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\5d4944507c05892008b66b2ba9474af5_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4184
- 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:2604
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:3912
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:864
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2908

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

Replay Monitor

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Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

Filesize
756KB

MD5
5d4944507c05892008b66b2ba9474af5

SHA1
1ccd3a438221a9cada327f019e90bfedefca23ea

SHA256
170c29020fd017689eb37c993b6ecca30b24ac1974f4f2ff8e80c721a58590f5

SHA512
65b5e10613f07c99cab45fcf66336605d8a718d4d263d215a33c30a48d0626ec2eae7e16592c307e46d971fcc7ab1ea2b738657770d624bee1fc88e21a1ec744

Download Submit
memory/2604-69-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-78-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-68-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-77-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-64-0x0000000002710000-0x0000000002711000-memory.dmp

Filesize
4KB

Download
memory/2604-65-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-66-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-67-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-76-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-61-0x0000000002710000-0x0000000002711000-memory.dmp

Filesize
4KB

Download
memory/2604-71-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-70-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-72-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-73-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-74-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2604-75-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2908-62-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download
memory/2992-63-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2992-0-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download