darkcomet | fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806

General

Target

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Size

251KB
MD5

32fc438bb5f1cb7368b8e01a47f2d574
SHA1

6b9e4dad2546a0e62c7bbb12a24329bec522532b
SHA256

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806
SHA512

9205ee338417f4833b40c1c03e7be3079b583726054750ee6d033e16e395e9f5ddaeb463ef827e99368e36751bb6a3ead0e6f649a8cd4e28a83528c4aebdb41c

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

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:

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\Temp\\Microsoft.NET.exe"	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

Microsoft.NET.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" Microsoft.NET.exe
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 1 IoCs

Processes:

Microsoft.NET.exe

pid process

1704 Microsoft.NET.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	Microsoft.NET.exe

pid	process
1704	Microsoft.NET.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe	upx
\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe	upx
C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe	upx
C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe	upx

Loads dropped DLL 2 IoCs

Processes:

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe

pid	process
240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

Microsoft.NET.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	Microsoft.NET.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Microsoft.NET.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft.NET = "C:\\Users\\Admin\\AppData\\Roaming\\Temp\\Microsoft.NET.exe"	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.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: GetForegroundWindowSpam 1 IoCs

Processes:

Microsoft.NET.exe

pid process

1704 Microsoft.NET.exe

pid	process
1704	Microsoft.NET.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exeMicrosoft.NET.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeSecurityPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeTakeOwnershipPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeLoadDriverPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeSystemProfilePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeSystemtimePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeProfSingleProcessPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeIncBasePriorityPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeCreatePagefilePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeBackupPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeRestorePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeShutdownPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeDebugPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeSystemEnvironmentPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeChangeNotifyPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeRemoteShutdownPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeUndockPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeManageVolumePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeImpersonatePrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeCreateGlobalPrivilege	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: 33	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: 34	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: 35	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
Token: SeIncreaseQuotaPrivilege	1704	Microsoft.NET.exe
Token: SeSecurityPrivilege	1704	Microsoft.NET.exe
Token: SeTakeOwnershipPrivilege	1704	Microsoft.NET.exe
Token: SeLoadDriverPrivilege	1704	Microsoft.NET.exe
Token: SeSystemProfilePrivilege	1704	Microsoft.NET.exe
Token: SeSystemtimePrivilege	1704	Microsoft.NET.exe
Token: SeProfSingleProcessPrivilege	1704	Microsoft.NET.exe
Token: SeIncBasePriorityPrivilege	1704	Microsoft.NET.exe
Token: SeCreatePagefilePrivilege	1704	Microsoft.NET.exe
Token: SeBackupPrivilege	1704	Microsoft.NET.exe
Token: SeRestorePrivilege	1704	Microsoft.NET.exe
Token: SeShutdownPrivilege	1704	Microsoft.NET.exe
Token: SeDebugPrivilege	1704	Microsoft.NET.exe
Token: SeSystemEnvironmentPrivilege	1704	Microsoft.NET.exe
Token: SeChangeNotifyPrivilege	1704	Microsoft.NET.exe
Token: SeRemoteShutdownPrivilege	1704	Microsoft.NET.exe
Token: SeUndockPrivilege	1704	Microsoft.NET.exe
Token: SeManageVolumePrivilege	1704	Microsoft.NET.exe
Token: SeImpersonatePrivilege	1704	Microsoft.NET.exe
Token: SeCreateGlobalPrivilege	1704	Microsoft.NET.exe
Token: 33	1704	Microsoft.NET.exe
Token: 34	1704	Microsoft.NET.exe
Token: 35	1704	Microsoft.NET.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Microsoft.NET.exe

pid process

1704 Microsoft.NET.exe

pid	process
1704	Microsoft.NET.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.execmd.execmd.exeMicrosoft.NET.exe

description	pid	process	target process
PID 240 wrote to memory of 2008	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2008	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2008	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2008	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2040	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2040	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2040	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 240 wrote to memory of 2040	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	cmd.exe
PID 2008 wrote to memory of 1784	2008	cmd.exe	attrib.exe
PID 2008 wrote to memory of 1784	2008	cmd.exe	attrib.exe
PID 2008 wrote to memory of 1784	2008	cmd.exe	attrib.exe
PID 2008 wrote to memory of 1784	2008	cmd.exe	attrib.exe
PID 240 wrote to memory of 1704	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	Microsoft.NET.exe
PID 240 wrote to memory of 1704	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	Microsoft.NET.exe
PID 240 wrote to memory of 1704	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	Microsoft.NET.exe
PID 240 wrote to memory of 1704	240	fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe	Microsoft.NET.exe
PID 2040 wrote to memory of 1104	2040	cmd.exe	attrib.exe
PID 2040 wrote to memory of 1104	2040	cmd.exe	attrib.exe
PID 2040 wrote to memory of 1104	2040	cmd.exe	attrib.exe
PID 2040 wrote to memory of 1104	2040	cmd.exe	attrib.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe
PID 1704 wrote to memory of 628	1704	Microsoft.NET.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1104 attrib.exe
1784 attrib.exe

pid	process
1104	attrib.exe
1784	attrib.exe

C:\Users\Admin\AppData\Local\Temp\fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe
"C:\Users\Admin\AppData\Local\Temp\fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:240

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2008

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1784

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:2040

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1104

C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe
"C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe"
2⤵
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:628

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

5

T1112

Disabling Security Tools

2

T1089

Hidden Files and Directories

2

T1158

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe
MD5
32fc438bb5f1cb7368b8e01a47f2d574

SHA1
6b9e4dad2546a0e62c7bbb12a24329bec522532b

SHA256
fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806

SHA512
9205ee338417f4833b40c1c03e7be3079b583726054750ee6d033e16e395e9f5ddaeb463ef827e99368e36751bb6a3ead0e6f649a8cd4e28a83528c4aebdb41c

Download Submit
C:\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe
MD5
32fc438bb5f1cb7368b8e01a47f2d574

SHA1
6b9e4dad2546a0e62c7bbb12a24329bec522532b

SHA256
fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806

SHA512
9205ee338417f4833b40c1c03e7be3079b583726054750ee6d033e16e395e9f5ddaeb463ef827e99368e36751bb6a3ead0e6f649a8cd4e28a83528c4aebdb41c

Download Submit
\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe
MD5
32fc438bb5f1cb7368b8e01a47f2d574

SHA1
6b9e4dad2546a0e62c7bbb12a24329bec522532b

SHA256
fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806

SHA512
9205ee338417f4833b40c1c03e7be3079b583726054750ee6d033e16e395e9f5ddaeb463ef827e99368e36751bb6a3ead0e6f649a8cd4e28a83528c4aebdb41c

Download Submit
\Users\Admin\AppData\Roaming\Temp\Microsoft.NET.exe
MD5
32fc438bb5f1cb7368b8e01a47f2d574

SHA1
6b9e4dad2546a0e62c7bbb12a24329bec522532b

SHA256
fd67a9e95f6d0b78948950ed2e73ea275c7c5155d0e04d39f3dfebf8659ae806

SHA512
9205ee338417f4833b40c1c03e7be3079b583726054750ee6d033e16e395e9f5ddaeb463ef827e99368e36751bb6a3ead0e6f649a8cd4e28a83528c4aebdb41c

Download Submit
memory/628-9-0x0000000000000000-mapping.dmp

Download
memory/628-11-0x0000000000000000-mapping.dmp

Download
memory/628-10-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/1104-6-0x0000000000000000-mapping.dmp

Download
memory/1704-5-0x0000000000000000-mapping.dmp

Download
memory/1784-2-0x0000000000000000-mapping.dmp

Download
memory/2008-0-0x0000000000000000-mapping.dmp

Download
memory/2040-1-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads