darkcomet | 8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

Analysis

max time kernel
153s
max time network
179s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
25-07-2022 00:13

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General

Target

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Size

253KB
MD5

a1af7a30f3b145b0638608e49b2bb927
SHA1

c3ff6ff1b941e39754737e5213f48a14424387f6
SHA256

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad
SHA512

8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

zl5.hopto.org:1604

zl5.hopto.org:27015

Mutex

DC_MUTEX-0Q5LT4L

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
uVsihbkxVDZL
install
true
offline_keylogger
true
persistence
false
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:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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"	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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

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

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

Windows security bypass 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

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

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 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1648 attrib.exe
1656 attrib.exe

pid	process
1536	msdcsc.exe

pid	process
1648	attrib.exe
1656	attrib.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1492-55-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
\Windows\MSDCSC\msdcsc.exe	upx
\Windows\MSDCSC\msdcsc.exe	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
behavioral1/memory/1492-65-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral1/memory/1536-66-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral1/memory/1536-69-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

pid	process
1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

Drops file in Windows directory 3 IoCs

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

description	ioc	process
File created	C:\Windows\MSDCSC\msdcsc.exe	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
File opened for modification	C:\Windows\MSDCSC\	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSecurityPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeTakeOwnershipPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeLoadDriverPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemProfilePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemtimePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeProfSingleProcessPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeIncBasePriorityPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeCreatePagefilePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeBackupPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeRestorePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeShutdownPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeDebugPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemEnvironmentPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeChangeNotifyPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeRemoteShutdownPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeUndockPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeManageVolumePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeImpersonatePrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeCreateGlobalPrivilege	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 33	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 34	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 35	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 1492 wrote to memory of 976	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 976	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 976	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 976	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 896	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 896	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 896	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 1492 wrote to memory of 896	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 976 wrote to memory of 1656	976	cmd.exe	attrib.exe
PID 976 wrote to memory of 1656	976	cmd.exe	attrib.exe
PID 976 wrote to memory of 1656	976	cmd.exe	attrib.exe
PID 976 wrote to memory of 1656	976	cmd.exe	attrib.exe
PID 896 wrote to memory of 1648	896	cmd.exe	attrib.exe
PID 896 wrote to memory of 1648	896	cmd.exe	attrib.exe
PID 896 wrote to memory of 1648	896	cmd.exe	attrib.exe
PID 896 wrote to memory of 1648	896	cmd.exe	attrib.exe
PID 1492 wrote to memory of 1536	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 1492 wrote to memory of 1536	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 1492 wrote to memory of 1536	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 1492 wrote to memory of 1536	1492	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	1536	msdcsc.exe	notepad.exe
PID 1536 wrote to memory of 580	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

1648 attrib.exe
1656 attrib.exe

pid	process
1648	attrib.exe
1656	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
"C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.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:1492

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:976

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1656

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:896

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1648

C:\Windows\MSDCSC\msdcsc.exe
"C:\Windows\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- 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:580

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Modify Existing Service

T1031

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\MSDCSC\msdcsc.exe
Filesize
253KB

MD5
a1af7a30f3b145b0638608e49b2bb927

SHA1
c3ff6ff1b941e39754737e5213f48a14424387f6

SHA256
8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

SHA512
8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

Download Submit
\Windows\MSDCSC\msdcsc.exe
Filesize
253KB

MD5
a1af7a30f3b145b0638608e49b2bb927

SHA1
c3ff6ff1b941e39754737e5213f48a14424387f6

SHA256
8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

SHA512
8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

Download Submit
\Windows\MSDCSC\msdcsc.exe
Filesize
253KB

MD5
a1af7a30f3b145b0638608e49b2bb927

SHA1
c3ff6ff1b941e39754737e5213f48a14424387f6

SHA256
8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

SHA512
8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

Download Submit
memory/580-67-0x0000000000000000-mapping.dmp

Download
memory/896-57-0x0000000000000000-mapping.dmp

Download
memory/976-56-0x0000000000000000-mapping.dmp

Download
memory/1492-54-0x00000000750B1000-0x00000000750B3000-memory.dmp

Filesize
8KB

Download
memory/1492-55-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1492-65-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1536-62-0x0000000000000000-mapping.dmp

Download
memory/1536-66-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1536-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1648-59-0x0000000000000000-mapping.dmp

Download
memory/1656-58-0x0000000000000000-mapping.dmp

Download