darkcomet | b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7

General

Target

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Size

252KB
MD5

b780e5c2aa4465ca48aa5f41ce4adf7f
SHA1

efda9481424c4d88f2c4a78742db1cf5b05ff8a2
SHA256

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7
SHA512

1bfe4bcd73cb1ce0681da7e6fc58757b1e5c024d3cffbbc4d58f8976d724b9850ab9b0445541d6f114109f74d683d73836a3c9f511ee7ad54a9b8cb31b0d9367

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:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe"	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.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

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

msdcsc.exe

description ioc process

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

Disabling Security Tools
T1089

Modify Registry
T1112
Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1536 msdcsc.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"	msdcsc.exe

pid	process
1536	msdcsc.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
\Windows\MSDCSC\msdcsc.exe	upx
\Windows\MSDCSC\msdcsc.exe	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
C:\Windows\MSDCSC\msdcsc.exe	upx

Loads dropped DLL 2 IoCs

Processes:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

pid	process
2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

msdcsc.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

Drops file in Windows directory 3 IoCs

Processes:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe

description	ioc	process
File created	C:\Windows\MSDCSC\msdcsc.exe	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
File opened for modification	C:\Windows\MSDCSC\	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.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

1536 msdcsc.exe

pid	process
1536	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeSecurityPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeTakeOwnershipPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeLoadDriverPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeSystemProfilePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeSystemtimePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeProfSingleProcessPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeIncBasePriorityPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeCreatePagefilePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeBackupPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeRestorePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeShutdownPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeDebugPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeSystemEnvironmentPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeChangeNotifyPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeRemoteShutdownPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeUndockPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeManageVolumePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeImpersonatePrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeCreateGlobalPrivilege	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: 33	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: 34	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: 35	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
Token: SeIncreaseQuotaPrivilege	1536	msdcsc.exe
Token: SeSecurityPrivilege	1536	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1536	msdcsc.exe
Token: SeLoadDriverPrivilege	1536	msdcsc.exe
Token: SeSystemProfilePrivilege	1536	msdcsc.exe
Token: SeSystemtimePrivilege	1536	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1536	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1536	msdcsc.exe
Token: SeCreatePagefilePrivilege	1536	msdcsc.exe
Token: SeBackupPrivilege	1536	msdcsc.exe
Token: SeRestorePrivilege	1536	msdcsc.exe
Token: SeShutdownPrivilege	1536	msdcsc.exe
Token: SeDebugPrivilege	1536	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1536	msdcsc.exe
Token: SeChangeNotifyPrivilege	1536	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1536	msdcsc.exe
Token: SeUndockPrivilege	1536	msdcsc.exe
Token: SeManageVolumePrivilege	1536	msdcsc.exe
Token: SeImpersonatePrivilege	1536	msdcsc.exe
Token: SeCreateGlobalPrivilege	1536	msdcsc.exe
Token: 33	1536	msdcsc.exe
Token: 34	1536	msdcsc.exe
Token: 35	1536	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1536 msdcsc.exe

pid	process
1536	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2016 wrote to memory of 948	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 948	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 948	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 948	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 1996	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 1996	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 1996	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 2016 wrote to memory of 1996	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	cmd.exe
PID 948 wrote to memory of 1704	948	cmd.exe	attrib.exe
PID 948 wrote to memory of 1704	948	cmd.exe	attrib.exe
PID 948 wrote to memory of 1704	948	cmd.exe	attrib.exe
PID 948 wrote to memory of 1704	948	cmd.exe	attrib.exe
PID 1996 wrote to memory of 1676	1996	cmd.exe	attrib.exe
PID 1996 wrote to memory of 1676	1996	cmd.exe	attrib.exe
PID 1996 wrote to memory of 1676	1996	cmd.exe	attrib.exe
PID 1996 wrote to memory of 1676	1996	cmd.exe	attrib.exe
PID 2016 wrote to memory of 1536	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	msdcsc.exe
PID 2016 wrote to memory of 1536	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	msdcsc.exe
PID 2016 wrote to memory of 1536	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	msdcsc.exe
PID 2016 wrote to memory of 1536	2016	b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe	msdcsc.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 320	1536	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1704 attrib.exe
1676 attrib.exe

pid	process
1704	attrib.exe
1676	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe
"C:\Users\Admin\AppData\Local\Temp\b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1704

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:1996

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1676

C:\Windows\MSDCSC\msdcsc.exe
"C:\Windows\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1536

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:320

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

2

T1031

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

7

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

Replay Monitor

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Downloads

C:\Windows\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
b780e5c2aa4465ca48aa5f41ce4adf7f

SHA1
efda9481424c4d88f2c4a78742db1cf5b05ff8a2

SHA256
b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7

SHA512
1bfe4bcd73cb1ce0681da7e6fc58757b1e5c024d3cffbbc4d58f8976d724b9850ab9b0445541d6f114109f74d683d73836a3c9f511ee7ad54a9b8cb31b0d9367

Download Submit
C:\Windows\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
b780e5c2aa4465ca48aa5f41ce4adf7f

SHA1
efda9481424c4d88f2c4a78742db1cf5b05ff8a2

SHA256
b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7

SHA512
1bfe4bcd73cb1ce0681da7e6fc58757b1e5c024d3cffbbc4d58f8976d724b9850ab9b0445541d6f114109f74d683d73836a3c9f511ee7ad54a9b8cb31b0d9367

Download Submit
\Windows\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
b780e5c2aa4465ca48aa5f41ce4adf7f

SHA1
efda9481424c4d88f2c4a78742db1cf5b05ff8a2

SHA256
b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7

SHA512
1bfe4bcd73cb1ce0681da7e6fc58757b1e5c024d3cffbbc4d58f8976d724b9850ab9b0445541d6f114109f74d683d73836a3c9f511ee7ad54a9b8cb31b0d9367

Download Submit
\Windows\MSDCSC\msdcsc.exe
Filesize
252KB

MD5
b780e5c2aa4465ca48aa5f41ce4adf7f

SHA1
efda9481424c4d88f2c4a78742db1cf5b05ff8a2

SHA256
b12ebd9263108e9344610b6f3b458744f9dd1bc365bbf72b753a4d2e459587e7

SHA512
1bfe4bcd73cb1ce0681da7e6fc58757b1e5c024d3cffbbc4d58f8976d724b9850ab9b0445541d6f114109f74d683d73836a3c9f511ee7ad54a9b8cb31b0d9367

Download Submit
memory/320-65-0x0000000000000000-mapping.dmp

Download
memory/948-55-0x0000000000000000-mapping.dmp

Download
memory/1536-61-0x0000000000000000-mapping.dmp

Download
memory/1676-58-0x0000000000000000-mapping.dmp

Download
memory/1704-57-0x0000000000000000-mapping.dmp

Download
memory/1996-56-0x0000000000000000-mapping.dmp

Download
memory/2016-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads