darkcomet | 8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2022 00:13

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
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

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\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\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

228 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

4092 attrib.exe
3492 attrib.exe

pid	process
228	msdcsc.exe

pid	process
4092	attrib.exe
3492	attrib.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4256-130-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
behavioral2/memory/228-138-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4256-140-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/228-141-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	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-1-5-21-2660308776-3705150086-26593515-1000\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 opened for modification	C:\Windows\MSDCSC\msdcsc.exe	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
File opened for modification	C:\Windows\MSDCSC\	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
File created	C:\Windows\MSDCSC\msdcsc.exe	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

228 msdcsc.exe

pid	process
228	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSecurityPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeTakeOwnershipPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeLoadDriverPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemProfilePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemtimePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeProfSingleProcessPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeIncBasePriorityPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeCreatePagefilePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeBackupPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeRestorePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeShutdownPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeDebugPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeSystemEnvironmentPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeChangeNotifyPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeRemoteShutdownPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeUndockPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeManageVolumePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeImpersonatePrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeCreateGlobalPrivilege	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 33	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 34	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 35	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: 36	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
Token: SeIncreaseQuotaPrivilege	228	msdcsc.exe
Token: SeSecurityPrivilege	228	msdcsc.exe
Token: SeTakeOwnershipPrivilege	228	msdcsc.exe
Token: SeLoadDriverPrivilege	228	msdcsc.exe
Token: SeSystemProfilePrivilege	228	msdcsc.exe
Token: SeSystemtimePrivilege	228	msdcsc.exe
Token: SeProfSingleProcessPrivilege	228	msdcsc.exe
Token: SeIncBasePriorityPrivilege	228	msdcsc.exe
Token: SeCreatePagefilePrivilege	228	msdcsc.exe
Token: SeBackupPrivilege	228	msdcsc.exe
Token: SeRestorePrivilege	228	msdcsc.exe
Token: SeShutdownPrivilege	228	msdcsc.exe
Token: SeDebugPrivilege	228	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	228	msdcsc.exe
Token: SeChangeNotifyPrivilege	228	msdcsc.exe
Token: SeRemoteShutdownPrivilege	228	msdcsc.exe
Token: SeUndockPrivilege	228	msdcsc.exe
Token: SeManageVolumePrivilege	228	msdcsc.exe
Token: SeImpersonatePrivilege	228	msdcsc.exe
Token: SeCreateGlobalPrivilege	228	msdcsc.exe
Token: 33	228	msdcsc.exe
Token: 34	228	msdcsc.exe
Token: 35	228	msdcsc.exe
Token: 36	228	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

228 msdcsc.exe

pid	process
228	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4256 wrote to memory of 2004	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 4256 wrote to memory of 2004	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 4256 wrote to memory of 2004	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 4256 wrote to memory of 3348	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 4256 wrote to memory of 3348	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 4256 wrote to memory of 3348	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	cmd.exe
PID 2004 wrote to memory of 3492	2004	cmd.exe	attrib.exe
PID 2004 wrote to memory of 3492	2004	cmd.exe	attrib.exe
PID 2004 wrote to memory of 3492	2004	cmd.exe	attrib.exe
PID 3348 wrote to memory of 4092	3348	cmd.exe	attrib.exe
PID 3348 wrote to memory of 4092	3348	cmd.exe	attrib.exe
PID 3348 wrote to memory of 4092	3348	cmd.exe	attrib.exe
PID 4256 wrote to memory of 228	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 4256 wrote to memory of 228	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 4256 wrote to memory of 228	4256	8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe	msdcsc.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe
PID 228 wrote to memory of 440	228	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

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

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

3492 attrib.exe
4092 attrib.exe

pid	process
3492	attrib.exe
4092	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe
"C:\Users\Admin\AppData\Local\Temp\8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4256

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:2004

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:3492

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:3348

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4092

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:228

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:440

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
a1af7a30f3b145b0638608e49b2bb927

SHA1
c3ff6ff1b941e39754737e5213f48a14424387f6

SHA256
8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

SHA512
8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

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

MD5
a1af7a30f3b145b0638608e49b2bb927

SHA1
c3ff6ff1b941e39754737e5213f48a14424387f6

SHA256
8ce660126f62daa38399afae4f53c3a69dbad816b6030daae4f43566964595ad

SHA512
8a62140b69e39c27b91468a324b12b342c4f65bcb405071c024e8ca5c26ddde43093a198365a85001350eec48a7823341da82ab3fa9cf7ab5ebeb58245354e4c

Download Submit
memory/228-135-0x0000000000000000-mapping.dmp

Download
memory/228-138-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/228-141-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/440-139-0x0000000000000000-mapping.dmp

Download
memory/2004-131-0x0000000000000000-mapping.dmp

Download
memory/3348-132-0x0000000000000000-mapping.dmp

Download
memory/3492-133-0x0000000000000000-mapping.dmp

Download
memory/4092-134-0x0000000000000000-mapping.dmp

Download
memory/4256-130-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4256-140-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download