darkcomet | 4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

General

Target

4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe
Size

604KB
MD5

46a36b28a6f07b76ea511a8ae0c2aa3a
SHA1

88de3a8bbeff45b802c5f5b19c7aacf88dd235ed
SHA256

4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198
SHA512

65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c
SSDEEP

12288:qDboBfrFT0u7kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk:7Bfr/HiJw7DxD

Score

10^/10

darkcomet repaired persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

REPAIRED

C2

susanrosanne.ddns.net:8991

Mutex

DC_MUTEX-MTLJCHX

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
v3RMsCdzjW76
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

T1004

Modify Registry

T1112

Processes:

Terms.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"	Terms.exe

Executes dropped EXE 5 IoCs

Processes:

Terms.exeTerms.exemsdcsc.exeTerms.exeTerms.exe

pid process

752 Terms.exe
4156 Terms.exe
4852 msdcsc.exe
4660 Terms.exe
1396 Terms.exe

pid	process
752	Terms.exe
4156	Terms.exe
4852	msdcsc.exe
4660	Terms.exe
1396	Terms.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4156-137-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4156-138-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4156-139-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4156-143-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1396-148-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1396-149-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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:

Terms.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation Terms.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	Terms.exe

Drops startup file 1 IoCs

Processes:

4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Create Pain.vbs	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Terms.exeTerms.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	Terms.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	Terms.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Terms.exeTerms.exe

description pid process target process

PID 752 set thread context of 4156 752 Terms.exe Terms.exe
PID 4660 set thread context of 1396 4660 Terms.exe Terms.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:

Terms.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Terms.exe
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

Terms.exeTerms.exe

pid process

752 Terms.exe
752 Terms.exe
4660 Terms.exe
4660 Terms.exe

description	pid	process	target process
PID 752 set thread context of 4156	752	Terms.exe	Terms.exe
PID 4660 set thread context of 1396	4660	Terms.exe	Terms.exe

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

pid	process
752	Terms.exe
752	Terms.exe
4660	Terms.exe
4660	Terms.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

Terms.exeTerms.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4156	Terms.exe
Token: SeSecurityPrivilege	4156	Terms.exe
Token: SeTakeOwnershipPrivilege	4156	Terms.exe
Token: SeLoadDriverPrivilege	4156	Terms.exe
Token: SeSystemProfilePrivilege	4156	Terms.exe
Token: SeSystemtimePrivilege	4156	Terms.exe
Token: SeProfSingleProcessPrivilege	4156	Terms.exe
Token: SeIncBasePriorityPrivilege	4156	Terms.exe
Token: SeCreatePagefilePrivilege	4156	Terms.exe
Token: SeBackupPrivilege	4156	Terms.exe
Token: SeRestorePrivilege	4156	Terms.exe
Token: SeShutdownPrivilege	4156	Terms.exe
Token: SeDebugPrivilege	4156	Terms.exe
Token: SeSystemEnvironmentPrivilege	4156	Terms.exe
Token: SeChangeNotifyPrivilege	4156	Terms.exe
Token: SeRemoteShutdownPrivilege	4156	Terms.exe
Token: SeUndockPrivilege	4156	Terms.exe
Token: SeManageVolumePrivilege	4156	Terms.exe
Token: SeImpersonatePrivilege	4156	Terms.exe
Token: SeCreateGlobalPrivilege	4156	Terms.exe
Token: 33	4156	Terms.exe
Token: 34	4156	Terms.exe
Token: 35	4156	Terms.exe
Token: 36	4156	Terms.exe
Token: SeIncreaseQuotaPrivilege	1396	Terms.exe
Token: SeSecurityPrivilege	1396	Terms.exe
Token: SeTakeOwnershipPrivilege	1396	Terms.exe
Token: SeLoadDriverPrivilege	1396	Terms.exe
Token: SeSystemProfilePrivilege	1396	Terms.exe
Token: SeSystemtimePrivilege	1396	Terms.exe
Token: SeProfSingleProcessPrivilege	1396	Terms.exe
Token: SeIncBasePriorityPrivilege	1396	Terms.exe
Token: SeCreatePagefilePrivilege	1396	Terms.exe
Token: SeBackupPrivilege	1396	Terms.exe
Token: SeRestorePrivilege	1396	Terms.exe
Token: SeShutdownPrivilege	1396	Terms.exe
Token: SeDebugPrivilege	1396	Terms.exe
Token: SeSystemEnvironmentPrivilege	1396	Terms.exe
Token: SeChangeNotifyPrivilege	1396	Terms.exe
Token: SeRemoteShutdownPrivilege	1396	Terms.exe
Token: SeUndockPrivilege	1396	Terms.exe
Token: SeManageVolumePrivilege	1396	Terms.exe
Token: SeImpersonatePrivilege	1396	Terms.exe
Token: SeCreateGlobalPrivilege	1396	Terms.exe
Token: 33	1396	Terms.exe
Token: 34	1396	Terms.exe
Token: 35	1396	Terms.exe
Token: 36	1396	Terms.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Terms.exe

pid process

1396 Terms.exe

pid	process
1396	Terms.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exeTerms.exeTerms.exemsdcsc.exeTerms.exe

description	pid	process	target process
PID 4968 wrote to memory of 752	4968	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 4968 wrote to memory of 752	4968	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 4968 wrote to memory of 752	4968	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 752 wrote to memory of 4156	752	Terms.exe	Terms.exe
PID 752 wrote to memory of 4156	752	Terms.exe	Terms.exe
PID 752 wrote to memory of 4156	752	Terms.exe	Terms.exe
PID 4156 wrote to memory of 4852	4156	Terms.exe	msdcsc.exe
PID 4156 wrote to memory of 4852	4156	Terms.exe	msdcsc.exe
PID 4156 wrote to memory of 4852	4156	Terms.exe	msdcsc.exe
PID 4852 wrote to memory of 4660	4852	msdcsc.exe	Terms.exe
PID 4852 wrote to memory of 4660	4852	msdcsc.exe	Terms.exe
PID 4852 wrote to memory of 4660	4852	msdcsc.exe	Terms.exe
PID 4660 wrote to memory of 1396	4660	Terms.exe	Terms.exe
PID 4660 wrote to memory of 1396	4660	Terms.exe	Terms.exe
PID 4660 wrote to memory of 1396	4660	Terms.exe	Terms.exe

C:\Users\Admin\AppData\Local\Temp\4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe
"C:\Users\Admin\AppData\Local\Temp\4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:4968

C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
"C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:752

C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
"C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe"
3⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4156

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4852

C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
"C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4660

C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
"C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

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

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Downloads

C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\AppData\Roaming\Create Pain\Terms.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
604KB

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
memory/752-132-0x0000000000000000-mapping.dmp

Download
memory/1396-149-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1396-148-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1396-146-0x0000000000000000-mapping.dmp

Download
memory/4156-139-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4156-143-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4156-135-0x0000000000000000-mapping.dmp

Download
memory/4156-138-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4156-137-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4660-144-0x0000000000000000-mapping.dmp

Download
memory/4852-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads