darkcomet | 4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac

General

Target

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Size

349KB
MD5

8bb1d40020267fd6a8778c710b4f7976
SHA1

d0c9aa6ee06e72c6c383ab0cd15f1951b961b9d4
SHA256

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac
SHA512

4e99185e84cbdd3bf7086e30f6076965de2c103336cb7be9b55fb46c9365924c61bbda620eab763ecef446e3ea90b4b9e80e4674c908583b9fd7310bfa58e557

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:

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.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"	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exe

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

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

Processes:

msdcsc.exe

pid process

1780 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
1780	msdcsc.exe

UPX packed file 4 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
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx

Loads dropped DLL 2 IoCs

Processes:

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe

pid	process
976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.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

1780 msdcsc.exe

pid	process
1780	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeSecurityPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeTakeOwnershipPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeLoadDriverPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeSystemProfilePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeSystemtimePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeProfSingleProcessPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeIncBasePriorityPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeCreatePagefilePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeBackupPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeRestorePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeShutdownPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeDebugPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeSystemEnvironmentPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeChangeNotifyPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeRemoteShutdownPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeUndockPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeManageVolumePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeImpersonatePrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeCreateGlobalPrivilege	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: 33	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: 34	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: 35	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
Token: SeIncreaseQuotaPrivilege	1780	msdcsc.exe
Token: SeSecurityPrivilege	1780	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1780	msdcsc.exe
Token: SeLoadDriverPrivilege	1780	msdcsc.exe
Token: SeSystemProfilePrivilege	1780	msdcsc.exe
Token: SeSystemtimePrivilege	1780	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1780	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1780	msdcsc.exe
Token: SeCreatePagefilePrivilege	1780	msdcsc.exe
Token: SeBackupPrivilege	1780	msdcsc.exe
Token: SeRestorePrivilege	1780	msdcsc.exe
Token: SeShutdownPrivilege	1780	msdcsc.exe
Token: SeDebugPrivilege	1780	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1780	msdcsc.exe
Token: SeChangeNotifyPrivilege	1780	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1780	msdcsc.exe
Token: SeUndockPrivilege	1780	msdcsc.exe
Token: SeManageVolumePrivilege	1780	msdcsc.exe
Token: SeImpersonatePrivilege	1780	msdcsc.exe
Token: SeCreateGlobalPrivilege	1780	msdcsc.exe
Token: 33	1780	msdcsc.exe
Token: 34	1780	msdcsc.exe
Token: 35	1780	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1780 msdcsc.exe

pid	process
1780	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 976 wrote to memory of 1924	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1924	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1924	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1924	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1744	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1744	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1744	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 976 wrote to memory of 1744	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	cmd.exe
PID 1924 wrote to memory of 1748	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 1748	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 1748	1924	cmd.exe	attrib.exe
PID 1924 wrote to memory of 1748	1924	cmd.exe	attrib.exe
PID 1744 wrote to memory of 1424	1744	cmd.exe	attrib.exe
PID 1744 wrote to memory of 1424	1744	cmd.exe	attrib.exe
PID 1744 wrote to memory of 1424	1744	cmd.exe	attrib.exe
PID 1744 wrote to memory of 1424	1744	cmd.exe	attrib.exe
PID 976 wrote to memory of 1780	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	msdcsc.exe
PID 976 wrote to memory of 1780	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	msdcsc.exe
PID 976 wrote to memory of 1780	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	msdcsc.exe
PID 976 wrote to memory of 1780	976	4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe	msdcsc.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe
PID 1780 wrote to memory of 1788	1780	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1748 attrib.exe
1424 attrib.exe

pid	process
1748	attrib.exe
1424	attrib.exe

C:\Users\Admin\AppData\Local\Temp\4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe
"C:\Users\Admin\AppData\Local\Temp\4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:976

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1748

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:1744

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1424

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:1780

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1788

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
Filesize
349KB

MD5
8bb1d40020267fd6a8778c710b4f7976

SHA1
d0c9aa6ee06e72c6c383ab0cd15f1951b961b9d4

SHA256
4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac

SHA512
4e99185e84cbdd3bf7086e30f6076965de2c103336cb7be9b55fb46c9365924c61bbda620eab763ecef446e3ea90b4b9e80e4674c908583b9fd7310bfa58e557

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
349KB

MD5
8bb1d40020267fd6a8778c710b4f7976

SHA1
d0c9aa6ee06e72c6c383ab0cd15f1951b961b9d4

SHA256
4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac

SHA512
4e99185e84cbdd3bf7086e30f6076965de2c103336cb7be9b55fb46c9365924c61bbda620eab763ecef446e3ea90b4b9e80e4674c908583b9fd7310bfa58e557

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
349KB

MD5
8bb1d40020267fd6a8778c710b4f7976

SHA1
d0c9aa6ee06e72c6c383ab0cd15f1951b961b9d4

SHA256
4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac

SHA512
4e99185e84cbdd3bf7086e30f6076965de2c103336cb7be9b55fb46c9365924c61bbda620eab763ecef446e3ea90b4b9e80e4674c908583b9fd7310bfa58e557

Download Submit
\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
349KB

MD5
8bb1d40020267fd6a8778c710b4f7976

SHA1
d0c9aa6ee06e72c6c383ab0cd15f1951b961b9d4

SHA256
4ad10741fc2da2b3e001f01f04400973f743f3041dd188c7b136b0821460d9ac

SHA512
4e99185e84cbdd3bf7086e30f6076965de2c103336cb7be9b55fb46c9365924c61bbda620eab763ecef446e3ea90b4b9e80e4674c908583b9fd7310bfa58e557

Download Submit
memory/976-54-0x00000000752D1000-0x00000000752D3000-memory.dmp

Filesize
8KB

Download
memory/1424-58-0x0000000000000000-mapping.dmp

Download
memory/1744-56-0x0000000000000000-mapping.dmp

Download
memory/1748-57-0x0000000000000000-mapping.dmp

Download
memory/1780-61-0x0000000000000000-mapping.dmp

Download
memory/1788-65-0x0000000000000000-mapping.dmp

Download
memory/1924-55-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads