darkcomet | 4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

Analysis

max time kernel
151s
max time network
123s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 02:16

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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

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

1688 Terms.exe
1352 Terms.exe
892 msdcsc.exe
1764 Terms.exe
676 Terms.exe

pid	process
1688	Terms.exe
1352	Terms.exe
892	msdcsc.exe
1764	Terms.exe
676	Terms.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1352-61-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1352-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1352-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/676-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/676-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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

Loads dropped DLL 2 IoCs

Processes:

4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exeTerms.exe

pid process

1728 4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe
1352 Terms.exe

pid	process
1728	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe
1352	Terms.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-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	Terms.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\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 1688 set thread context of 1352 1688 Terms.exe Terms.exe
PID 1764 set thread context of 676 1764 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
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

Terms.exeTerms.exe

pid process

1688 Terms.exe
1688 Terms.exe
1764 Terms.exe
1764 Terms.exe

description	pid	process	target process
PID 1688 set thread context of 1352	1688	Terms.exe	Terms.exe
PID 1764 set thread context of 676	1764	Terms.exe	Terms.exe

pid	process
1688	Terms.exe
1688	Terms.exe
1764	Terms.exe
1764	Terms.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

Terms.exeTerms.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1352	Terms.exe
Token: SeSecurityPrivilege	1352	Terms.exe
Token: SeTakeOwnershipPrivilege	1352	Terms.exe
Token: SeLoadDriverPrivilege	1352	Terms.exe
Token: SeSystemProfilePrivilege	1352	Terms.exe
Token: SeSystemtimePrivilege	1352	Terms.exe
Token: SeProfSingleProcessPrivilege	1352	Terms.exe
Token: SeIncBasePriorityPrivilege	1352	Terms.exe
Token: SeCreatePagefilePrivilege	1352	Terms.exe
Token: SeBackupPrivilege	1352	Terms.exe
Token: SeRestorePrivilege	1352	Terms.exe
Token: SeShutdownPrivilege	1352	Terms.exe
Token: SeDebugPrivilege	1352	Terms.exe
Token: SeSystemEnvironmentPrivilege	1352	Terms.exe
Token: SeChangeNotifyPrivilege	1352	Terms.exe
Token: SeRemoteShutdownPrivilege	1352	Terms.exe
Token: SeUndockPrivilege	1352	Terms.exe
Token: SeManageVolumePrivilege	1352	Terms.exe
Token: SeImpersonatePrivilege	1352	Terms.exe
Token: SeCreateGlobalPrivilege	1352	Terms.exe
Token: 33	1352	Terms.exe
Token: 34	1352	Terms.exe
Token: 35	1352	Terms.exe
Token: SeIncreaseQuotaPrivilege	676	Terms.exe
Token: SeSecurityPrivilege	676	Terms.exe
Token: SeTakeOwnershipPrivilege	676	Terms.exe
Token: SeLoadDriverPrivilege	676	Terms.exe
Token: SeSystemProfilePrivilege	676	Terms.exe
Token: SeSystemtimePrivilege	676	Terms.exe
Token: SeProfSingleProcessPrivilege	676	Terms.exe
Token: SeIncBasePriorityPrivilege	676	Terms.exe
Token: SeCreatePagefilePrivilege	676	Terms.exe
Token: SeBackupPrivilege	676	Terms.exe
Token: SeRestorePrivilege	676	Terms.exe
Token: SeShutdownPrivilege	676	Terms.exe
Token: SeDebugPrivilege	676	Terms.exe
Token: SeSystemEnvironmentPrivilege	676	Terms.exe
Token: SeChangeNotifyPrivilege	676	Terms.exe
Token: SeRemoteShutdownPrivilege	676	Terms.exe
Token: SeUndockPrivilege	676	Terms.exe
Token: SeManageVolumePrivilege	676	Terms.exe
Token: SeImpersonatePrivilege	676	Terms.exe
Token: SeCreateGlobalPrivilege	676	Terms.exe
Token: 33	676	Terms.exe
Token: 34	676	Terms.exe
Token: 35	676	Terms.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Terms.exe

pid process

676 Terms.exe

pid	process
676	Terms.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

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

description	pid	process	target process
PID 1728 wrote to memory of 1688	1728	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 1728 wrote to memory of 1688	1728	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 1728 wrote to memory of 1688	1728	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 1728 wrote to memory of 1688	1728	4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe	Terms.exe
PID 1688 wrote to memory of 1352	1688	Terms.exe	Terms.exe
PID 1688 wrote to memory of 1352	1688	Terms.exe	Terms.exe
PID 1688 wrote to memory of 1352	1688	Terms.exe	Terms.exe
PID 1688 wrote to memory of 1352	1688	Terms.exe	Terms.exe
PID 1352 wrote to memory of 892	1352	Terms.exe	msdcsc.exe
PID 1352 wrote to memory of 892	1352	Terms.exe	msdcsc.exe
PID 1352 wrote to memory of 892	1352	Terms.exe	msdcsc.exe
PID 1352 wrote to memory of 892	1352	Terms.exe	msdcsc.exe
PID 892 wrote to memory of 1764	892	msdcsc.exe	Terms.exe
PID 892 wrote to memory of 1764	892	msdcsc.exe	Terms.exe
PID 892 wrote to memory of 1764	892	msdcsc.exe	Terms.exe
PID 892 wrote to memory of 1764	892	msdcsc.exe	Terms.exe
PID 1764 wrote to memory of 676	1764	Terms.exe	Terms.exe
PID 1764 wrote to memory of 676	1764	Terms.exe	Terms.exe
PID 1764 wrote to memory of 676	1764	Terms.exe	Terms.exe
PID 1764 wrote to memory of 676	1764	Terms.exe	Terms.exe

C:\Users\Admin\AppData\Local\Temp\4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe
"C:\Users\Admin\AppData\Local\Temp\4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728

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:1688

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
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1352

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:892

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:1764

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:676

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

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

MD5
46a36b28a6f07b76ea511a8ae0c2aa3a

SHA1
88de3a8bbeff45b802c5f5b19c7aacf88dd235ed

SHA256
4389d5af6fcb92a4b4aa14468339b09ee3bbc5188e568983340380aaa3ed0198

SHA512
65b7b53c93b35b65d803fb4ba67ebae0fd42aafb5a71d7b14888da49286ef6dd9f731b8d033c9f86ef6bdeb1949ac46230ca6da05b3803419813dc134b79e83c

Download Submit
memory/676-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/676-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/676-73-0x00000000004B5770-mapping.dmp

Download
memory/892-66-0x0000000000000000-mapping.dmp

Download
memory/1352-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1352-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1352-59-0x00000000004B5770-mapping.dmp

Download
memory/1352-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1688-56-0x0000000000000000-mapping.dmp

Download
memory/1728-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/1764-70-0x0000000000000000-mapping.dmp

Download