darkcomet | ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7

General

Target

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Size

757KB
MD5

191022f31c9f8d537d9ec88fd262bc50
SHA1

de7c4e9263b16c64c47cae98818d2eb0fb34c548
SHA256

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7
SHA512

58e855093be008e5b3113b02a27faf8395d01168b40a12b85438ed7fc2f19321f35695dfda63ef291b3aef63c76a45d7a4cdfa0a3b7c424a4c4a7dca5ee6397e
SSDEEP

12288:99HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hX:XZ1xuVVjfFoynPaVBUR8f+kN10EB5

Score

10^/10

darkcomet sazan evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

crayzlove.no-ip.org:1604

Mutex

DC_MUTEX-YLDY4TJ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
nZmHWoAc1fhT
install
true
offline_keylogger
true
persistence
true
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:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.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"	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.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\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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1244 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

3428 attrib.exe
3556 attrib.exe

pid	process
1244	msdcsc.exe

pid	process
3428	attrib.exe
3556	attrib.exe

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:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.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:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1244 msdcsc.exe

pid	process
1244	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSecurityPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeTakeOwnershipPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeLoadDriverPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemProfilePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemtimePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeProfSingleProcessPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeIncBasePriorityPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeCreatePagefilePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeBackupPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeRestorePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeShutdownPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeDebugPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeSystemEnvironmentPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeChangeNotifyPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeRemoteShutdownPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeUndockPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeManageVolumePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeImpersonatePrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeCreateGlobalPrivilege	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 33	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 34	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 35	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: 36	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
Token: SeIncreaseQuotaPrivilege	1244	msdcsc.exe
Token: SeSecurityPrivilege	1244	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1244	msdcsc.exe
Token: SeLoadDriverPrivilege	1244	msdcsc.exe
Token: SeSystemProfilePrivilege	1244	msdcsc.exe
Token: SeSystemtimePrivilege	1244	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1244	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1244	msdcsc.exe
Token: SeCreatePagefilePrivilege	1244	msdcsc.exe
Token: SeBackupPrivilege	1244	msdcsc.exe
Token: SeRestorePrivilege	1244	msdcsc.exe
Token: SeShutdownPrivilege	1244	msdcsc.exe
Token: SeDebugPrivilege	1244	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1244	msdcsc.exe
Token: SeChangeNotifyPrivilege	1244	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1244	msdcsc.exe
Token: SeUndockPrivilege	1244	msdcsc.exe
Token: SeManageVolumePrivilege	1244	msdcsc.exe
Token: SeImpersonatePrivilege	1244	msdcsc.exe
Token: SeCreateGlobalPrivilege	1244	msdcsc.exe
Token: 33	1244	msdcsc.exe
Token: 34	1244	msdcsc.exe
Token: 35	1244	msdcsc.exe
Token: 36	1244	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1244 msdcsc.exe

pid	process
1244	msdcsc.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3540 wrote to memory of 1960	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 3540 wrote to memory of 1960	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 3540 wrote to memory of 1960	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 3540 wrote to memory of 1464	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 3540 wrote to memory of 1464	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 3540 wrote to memory of 1464	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	cmd.exe
PID 1464 wrote to memory of 3428	1464	cmd.exe	attrib.exe
PID 1464 wrote to memory of 3428	1464	cmd.exe	attrib.exe
PID 1464 wrote to memory of 3428	1464	cmd.exe	attrib.exe
PID 1960 wrote to memory of 3556	1960	cmd.exe	attrib.exe
PID 1960 wrote to memory of 3556	1960	cmd.exe	attrib.exe
PID 1960 wrote to memory of 3556	1960	cmd.exe	attrib.exe
PID 3540 wrote to memory of 1244	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 3540 wrote to memory of 1244	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 3540 wrote to memory of 1244	3540	ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe	msdcsc.exe
PID 1244 wrote to memory of 2412	1244	msdcsc.exe	iexplore.exe
PID 1244 wrote to memory of 2412	1244	msdcsc.exe	iexplore.exe
PID 1244 wrote to memory of 2412	1244	msdcsc.exe	iexplore.exe
PID 1244 wrote to memory of 2596	1244	msdcsc.exe	explorer.exe
PID 1244 wrote to memory of 2596	1244	msdcsc.exe	explorer.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	msdcsc.exe	notepad.exe
PID 1244 wrote to memory of 2288	1244	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

3556 attrib.exe
3428 attrib.exe

pid	process
3556	attrib.exe
3428	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe
"C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3540

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3556

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:1464

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3428

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\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
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1244

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:2412

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:2596

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2288

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
757KB

MD5
191022f31c9f8d537d9ec88fd262bc50

SHA1
de7c4e9263b16c64c47cae98818d2eb0fb34c548

SHA256
ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7

SHA512
58e855093be008e5b3113b02a27faf8395d01168b40a12b85438ed7fc2f19321f35695dfda63ef291b3aef63c76a45d7a4cdfa0a3b7c424a4c4a7dca5ee6397e

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
757KB

MD5
191022f31c9f8d537d9ec88fd262bc50

SHA1
de7c4e9263b16c64c47cae98818d2eb0fb34c548

SHA256
ddd438b3624a3d8f500669f5f8da3d2688229e535065ffe661c5614f7685d3d7

SHA512
58e855093be008e5b3113b02a27faf8395d01168b40a12b85438ed7fc2f19321f35695dfda63ef291b3aef63c76a45d7a4cdfa0a3b7c424a4c4a7dca5ee6397e

Download Submit
memory/1244-136-0x0000000000000000-mapping.dmp

Download
memory/1464-133-0x0000000000000000-mapping.dmp

Download
memory/1960-132-0x0000000000000000-mapping.dmp

Download
memory/2288-140-0x0000000000000000-mapping.dmp

Download
memory/2596-139-0x0000000000000000-mapping.dmp

Download
memory/3428-134-0x0000000000000000-mapping.dmp

Download
memory/3556-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads