darkcomet | bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057

General

Target

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Size

284KB
MD5

90a641405523f561b9dbf3c27304d22f
SHA1

b72390e962498c5256ee22f1392d73f47d198829
SHA256

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057
SHA512

f799f4438ddefe3d48f815d53935d24e81bfa56a0c130236b8387de68dcd07344d227461ad64a3a0ac7dd28917bfc7795755e88231bbc996b61bd4a9a36ab8a7

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:

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.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"	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1924 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1924	msdcsc.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx

Loads dropped DLL 2 IoCs

Processes:

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe

pid	process
368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.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:

msdcsc.exe

pid process

1924 msdcsc.exe

pid	process
1924	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeSecurityPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeTakeOwnershipPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeLoadDriverPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeSystemProfilePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeSystemtimePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeProfSingleProcessPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeIncBasePriorityPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeCreatePagefilePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeBackupPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeRestorePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeShutdownPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeDebugPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeSystemEnvironmentPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeChangeNotifyPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeRemoteShutdownPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeUndockPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeManageVolumePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeImpersonatePrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeCreateGlobalPrivilege	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: 33	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: 34	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: 35	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
Token: SeIncreaseQuotaPrivilege	1924	msdcsc.exe
Token: SeSecurityPrivilege	1924	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1924	msdcsc.exe
Token: SeLoadDriverPrivilege	1924	msdcsc.exe
Token: SeSystemProfilePrivilege	1924	msdcsc.exe
Token: SeSystemtimePrivilege	1924	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1924	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1924	msdcsc.exe
Token: SeCreatePagefilePrivilege	1924	msdcsc.exe
Token: SeBackupPrivilege	1924	msdcsc.exe
Token: SeRestorePrivilege	1924	msdcsc.exe
Token: SeShutdownPrivilege	1924	msdcsc.exe
Token: SeDebugPrivilege	1924	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1924	msdcsc.exe
Token: SeChangeNotifyPrivilege	1924	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1924	msdcsc.exe
Token: SeUndockPrivilege	1924	msdcsc.exe
Token: SeManageVolumePrivilege	1924	msdcsc.exe
Token: SeImpersonatePrivilege	1924	msdcsc.exe
Token: SeCreateGlobalPrivilege	1924	msdcsc.exe
Token: 33	1924	msdcsc.exe
Token: 34	1924	msdcsc.exe
Token: 35	1924	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1924 msdcsc.exe

pid	process
1924	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 368 wrote to memory of 2032	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 2032	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 2032	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 2032	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 1172	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 1172	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 1172	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 1172	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	cmd.exe
PID 368 wrote to memory of 1924	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	msdcsc.exe
PID 368 wrote to memory of 1924	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	msdcsc.exe
PID 368 wrote to memory of 1924	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	msdcsc.exe
PID 368 wrote to memory of 1924	368	bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe	msdcsc.exe
PID 2032 wrote to memory of 1104	2032	cmd.exe	attrib.exe
PID 2032 wrote to memory of 1104	2032	cmd.exe	attrib.exe
PID 2032 wrote to memory of 1104	2032	cmd.exe	attrib.exe
PID 2032 wrote to memory of 1104	2032	cmd.exe	attrib.exe
PID 1172 wrote to memory of 1728	1172	cmd.exe	attrib.exe
PID 1172 wrote to memory of 1728	1172	cmd.exe	attrib.exe
PID 1172 wrote to memory of 1728	1172	cmd.exe	attrib.exe
PID 1172 wrote to memory of 1728	1172	cmd.exe	attrib.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.exe	notepad.exe
PID 1924 wrote to memory of 1720	1924	msdcsc.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
1728 attrib.exe

pid	process
1104	attrib.exe
1728	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe
"C:\Users\Admin\AppData\Local\Temp\bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:368

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1104

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:1172

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1728

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1720

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

3

T1112

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\Documents\MSDCSC\msdcsc.exe
MD5
90a641405523f561b9dbf3c27304d22f

SHA1
b72390e962498c5256ee22f1392d73f47d198829

SHA256
bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057

SHA512
f799f4438ddefe3d48f815d53935d24e81bfa56a0c130236b8387de68dcd07344d227461ad64a3a0ac7dd28917bfc7795755e88231bbc996b61bd4a9a36ab8a7

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
90a641405523f561b9dbf3c27304d22f

SHA1
b72390e962498c5256ee22f1392d73f47d198829

SHA256
bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057

SHA512
f799f4438ddefe3d48f815d53935d24e81bfa56a0c130236b8387de68dcd07344d227461ad64a3a0ac7dd28917bfc7795755e88231bbc996b61bd4a9a36ab8a7

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
90a641405523f561b9dbf3c27304d22f

SHA1
b72390e962498c5256ee22f1392d73f47d198829

SHA256
bfa21515e932d430a1c7415d5f6554a499075f2f40f913de56d918eff6693057

SHA512
f799f4438ddefe3d48f815d53935d24e81bfa56a0c130236b8387de68dcd07344d227461ad64a3a0ac7dd28917bfc7795755e88231bbc996b61bd4a9a36ab8a7

Download Submit
memory/368-69-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/368-59-0x0000000076661000-0x0000000076663000-memory.dmp

Filesize
8KB

Download
memory/1104-65-0x0000000000000000-mapping.dmp

Download
memory/1172-61-0x0000000000000000-mapping.dmp

Download
memory/1720-71-0x0000000000000000-mapping.dmp

Download
memory/1720-73-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1728-66-0x0000000000000000-mapping.dmp

Download
memory/1924-64-0x0000000000000000-mapping.dmp

Download
memory/1924-70-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2032-60-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads