darkcomet | 42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

General

Target

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Size

658KB
MD5

41e39fc0ab363cd35fff3594134777b4
SHA1

ccef504edaef4c92d3586a1d269506a1a9bb181a
SHA256

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad
SHA512

bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ha:KZ1xuVVjfFoynPaVBUR8f+kN10EB4

Score

10^/10

darkcomet hf evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

ambro.ddns.net:1604

Mutex

DC_MUTEX-FHGVDQZ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
u7a8sNW0Gw40
install
true
offline_keylogger
true
persistence
false
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

T1004

Modify Registry

T1112

Processes:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.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"	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4228 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1468 attrib.exe
4336 attrib.exe

pid	process
4228	msdcsc.exe

pid	process
1468	attrib.exe
4336	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:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

4228 msdcsc.exe

pid	process
4228	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeSecurityPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeTakeOwnershipPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeLoadDriverPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeSystemProfilePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeSystemtimePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeProfSingleProcessPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeIncBasePriorityPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeCreatePagefilePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeBackupPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeRestorePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeShutdownPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeDebugPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeSystemEnvironmentPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeChangeNotifyPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeRemoteShutdownPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeUndockPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeManageVolumePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeImpersonatePrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeCreateGlobalPrivilege	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: 33	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: 34	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: 35	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: 36	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
Token: SeIncreaseQuotaPrivilege	4228	msdcsc.exe
Token: SeSecurityPrivilege	4228	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4228	msdcsc.exe
Token: SeLoadDriverPrivilege	4228	msdcsc.exe
Token: SeSystemProfilePrivilege	4228	msdcsc.exe
Token: SeSystemtimePrivilege	4228	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4228	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4228	msdcsc.exe
Token: SeCreatePagefilePrivilege	4228	msdcsc.exe
Token: SeBackupPrivilege	4228	msdcsc.exe
Token: SeRestorePrivilege	4228	msdcsc.exe
Token: SeShutdownPrivilege	4228	msdcsc.exe
Token: SeDebugPrivilege	4228	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4228	msdcsc.exe
Token: SeChangeNotifyPrivilege	4228	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4228	msdcsc.exe
Token: SeUndockPrivilege	4228	msdcsc.exe
Token: SeManageVolumePrivilege	4228	msdcsc.exe
Token: SeImpersonatePrivilege	4228	msdcsc.exe
Token: SeCreateGlobalPrivilege	4228	msdcsc.exe
Token: 33	4228	msdcsc.exe
Token: 34	4228	msdcsc.exe
Token: 35	4228	msdcsc.exe
Token: 36	4228	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4228 msdcsc.exe

pid	process
4228	msdcsc.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3628 wrote to memory of 3016	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 3016	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 3016	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 1740	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 1740	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 1740	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	cmd.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3628 wrote to memory of 5108	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	notepad.exe
PID 3016 wrote to memory of 1468	3016	cmd.exe	attrib.exe
PID 3016 wrote to memory of 1468	3016	cmd.exe	attrib.exe
PID 3016 wrote to memory of 1468	3016	cmd.exe	attrib.exe
PID 1740 wrote to memory of 4336	1740	cmd.exe	attrib.exe
PID 1740 wrote to memory of 4336	1740	cmd.exe	attrib.exe
PID 1740 wrote to memory of 4336	1740	cmd.exe	attrib.exe
PID 3628 wrote to memory of 4228	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	msdcsc.exe
PID 3628 wrote to memory of 4228	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	msdcsc.exe
PID 3628 wrote to memory of 4228	3628	42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe	msdcsc.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe
PID 4228 wrote to memory of 2408	4228	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1468 attrib.exe
4336 attrib.exe

pid	process
1468	attrib.exe
4336	attrib.exe

C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe
"C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.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:3628

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3016

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1468

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4336

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:5108

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2408

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
41e39fc0ab363cd35fff3594134777b4

SHA1
ccef504edaef4c92d3586a1d269506a1a9bb181a

SHA256
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

SHA512
bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
41e39fc0ab363cd35fff3594134777b4

SHA1
ccef504edaef4c92d3586a1d269506a1a9bb181a

SHA256
42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

SHA512
bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042

Download Submit
memory/1468-135-0x0000000000000000-mapping.dmp

Download
memory/1740-133-0x0000000000000000-mapping.dmp

Download
memory/2408-140-0x0000000000000000-mapping.dmp

Download
memory/3016-132-0x0000000000000000-mapping.dmp

Download
memory/4228-137-0x0000000000000000-mapping.dmp

Download
memory/4336-136-0x0000000000000000-mapping.dmp

Download
memory/5108-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads