darkcomet | 72a73dc938994f7426f53815af73c89a04ce96094bceeef83b4810bd3d69fef3

General

Target

NeptuneClient.exe
Size

663KB
MD5

2e5c6aa1fb45422ca7411a76901abad0
SHA1

f33e086464ff9727c61dace2d2de45ed57abbae9
SHA256

72a73dc938994f7426f53815af73c89a04ce96094bceeef83b4810bd3d69fef3
SHA512

9a2e150433c7047812b4950d3ce5e30f07a2b017b4a0f61be01fcd1eed4800b82576b38dbc641e380f21491cbfee108ca4fd89838101e3b1c2ea19255b45912f
SSDEEP

12288:29HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hy:SZ1xuVVjfFoynPaVBUR8f+kN10EBw

Score

10^/10

darkcomet sazan persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

inspiring-moon-99738.pktriot.net:22710

Mutex

DC_MUTEX-PVB2U01

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
glfikLGHfVF2
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:

NeptuneClient.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\\msdcsc.exe"	NeptuneClient.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:

NeptuneClient.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	NeptuneClient.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4408 msdcsc.exe

pid	process
4408	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

NeptuneClient.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	NeptuneClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 4408 set thread context of 184 4408 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 4408 set thread context of 184	4408	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

NeptuneClient.exe

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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

NeptuneClient.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4428	NeptuneClient.exe
Token: SeSecurityPrivilege	4428	NeptuneClient.exe
Token: SeTakeOwnershipPrivilege	4428	NeptuneClient.exe
Token: SeLoadDriverPrivilege	4428	NeptuneClient.exe
Token: SeSystemProfilePrivilege	4428	NeptuneClient.exe
Token: SeSystemtimePrivilege	4428	NeptuneClient.exe
Token: SeProfSingleProcessPrivilege	4428	NeptuneClient.exe
Token: SeIncBasePriorityPrivilege	4428	NeptuneClient.exe
Token: SeCreatePagefilePrivilege	4428	NeptuneClient.exe
Token: SeBackupPrivilege	4428	NeptuneClient.exe
Token: SeRestorePrivilege	4428	NeptuneClient.exe
Token: SeShutdownPrivilege	4428	NeptuneClient.exe
Token: SeDebugPrivilege	4428	NeptuneClient.exe
Token: SeSystemEnvironmentPrivilege	4428	NeptuneClient.exe
Token: SeChangeNotifyPrivilege	4428	NeptuneClient.exe
Token: SeRemoteShutdownPrivilege	4428	NeptuneClient.exe
Token: SeUndockPrivilege	4428	NeptuneClient.exe
Token: SeManageVolumePrivilege	4428	NeptuneClient.exe
Token: SeImpersonatePrivilege	4428	NeptuneClient.exe
Token: SeCreateGlobalPrivilege	4428	NeptuneClient.exe
Token: 33	4428	NeptuneClient.exe
Token: 34	4428	NeptuneClient.exe
Token: 35	4428	NeptuneClient.exe
Token: 36	4428	NeptuneClient.exe
Token: SeIncreaseQuotaPrivilege	4408	msdcsc.exe
Token: SeSecurityPrivilege	4408	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4408	msdcsc.exe
Token: SeLoadDriverPrivilege	4408	msdcsc.exe
Token: SeSystemProfilePrivilege	4408	msdcsc.exe
Token: SeSystemtimePrivilege	4408	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4408	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4408	msdcsc.exe
Token: SeCreatePagefilePrivilege	4408	msdcsc.exe
Token: SeBackupPrivilege	4408	msdcsc.exe
Token: SeRestorePrivilege	4408	msdcsc.exe
Token: SeShutdownPrivilege	4408	msdcsc.exe
Token: SeDebugPrivilege	4408	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4408	msdcsc.exe
Token: SeChangeNotifyPrivilege	4408	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4408	msdcsc.exe
Token: SeUndockPrivilege	4408	msdcsc.exe
Token: SeManageVolumePrivilege	4408	msdcsc.exe
Token: SeImpersonatePrivilege	4408	msdcsc.exe
Token: SeCreateGlobalPrivilege	4408	msdcsc.exe
Token: 33	4408	msdcsc.exe
Token: 34	4408	msdcsc.exe
Token: 35	4408	msdcsc.exe
Token: 36	4408	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	184	iexplore.exe
Token: SeSecurityPrivilege	184	iexplore.exe
Token: SeTakeOwnershipPrivilege	184	iexplore.exe
Token: SeLoadDriverPrivilege	184	iexplore.exe
Token: SeSystemProfilePrivilege	184	iexplore.exe
Token: SeSystemtimePrivilege	184	iexplore.exe
Token: SeProfSingleProcessPrivilege	184	iexplore.exe
Token: SeIncBasePriorityPrivilege	184	iexplore.exe
Token: SeCreatePagefilePrivilege	184	iexplore.exe
Token: SeBackupPrivilege	184	iexplore.exe
Token: SeRestorePrivilege	184	iexplore.exe
Token: SeShutdownPrivilege	184	iexplore.exe
Token: SeDebugPrivilege	184	iexplore.exe
Token: SeSystemEnvironmentPrivilege	184	iexplore.exe
Token: SeChangeNotifyPrivilege	184	iexplore.exe
Token: SeRemoteShutdownPrivilege	184	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

184 iexplore.exe

pid	process
184	iexplore.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

NeptuneClient.exemsdcsc.exe

description	pid	process	target process
PID 4428 wrote to memory of 4408	4428	NeptuneClient.exe	msdcsc.exe
PID 4428 wrote to memory of 4408	4428	NeptuneClient.exe	msdcsc.exe
PID 4428 wrote to memory of 4408	4428	NeptuneClient.exe	msdcsc.exe
PID 4408 wrote to memory of 184	4408	msdcsc.exe	iexplore.exe
PID 4408 wrote to memory of 184	4408	msdcsc.exe	iexplore.exe
PID 4408 wrote to memory of 184	4408	msdcsc.exe	iexplore.exe
PID 4408 wrote to memory of 184	4408	msdcsc.exe	iexplore.exe
PID 4408 wrote to memory of 184	4408	msdcsc.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\NeptuneClient.exe
"C:\Users\Admin\AppData\Local\Temp\NeptuneClient.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4428

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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4408

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:184

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
663KB

MD5
2e5c6aa1fb45422ca7411a76901abad0

SHA1
f33e086464ff9727c61dace2d2de45ed57abbae9

SHA256
72a73dc938994f7426f53815af73c89a04ce96094bceeef83b4810bd3d69fef3

SHA512
9a2e150433c7047812b4950d3ce5e30f07a2b017b4a0f61be01fcd1eed4800b82576b38dbc641e380f21491cbfee108ca4fd89838101e3b1c2ea19255b45912f

Download Submit
memory/184-70-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4408-67-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/4408-71-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4428-0-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4428-1-0x00000000022D0000-0x00000000022D1000-memory.dmp

Filesize
4KB

Download
memory/4428-53-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads