darkcomet | d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

General

Target

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Size

659KB
MD5

6ea013f9f0eb1aa74f82928a81ecffd1
SHA1

9c23422cfa55dea80866774ea16c019226175449
SHA256

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b
SHA512

888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

Score

10^/10

darkcomet sazan evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

0.tcp.ngrok.io:10277

Mutex

DC_MUTEX-CYFYV25

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
834bxKalF1Bf
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:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.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"	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

Modifies firewall policy service 2 TTPs 6 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

iexplore.exemsdcsc.exe

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

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

msdcsc.exeiexplore.exe

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

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1028 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
1028	msdcsc.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:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.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:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1028 set thread context of 3160 1028 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1028 set thread context of 3160	1028	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

3160 iexplore.exe

pid	process
3160	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeSecurityPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeTakeOwnershipPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeLoadDriverPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeSystemProfilePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeSystemtimePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeProfSingleProcessPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeIncBasePriorityPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeCreatePagefilePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeBackupPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeRestorePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeShutdownPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeDebugPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeSystemEnvironmentPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeChangeNotifyPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeRemoteShutdownPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeUndockPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeManageVolumePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeImpersonatePrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeCreateGlobalPrivilege	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: 33	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: 34	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: 35	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: 36	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
Token: SeIncreaseQuotaPrivilege	1028	msdcsc.exe
Token: SeSecurityPrivilege	1028	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1028	msdcsc.exe
Token: SeLoadDriverPrivilege	1028	msdcsc.exe
Token: SeSystemProfilePrivilege	1028	msdcsc.exe
Token: SeSystemtimePrivilege	1028	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1028	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1028	msdcsc.exe
Token: SeCreatePagefilePrivilege	1028	msdcsc.exe
Token: SeBackupPrivilege	1028	msdcsc.exe
Token: SeRestorePrivilege	1028	msdcsc.exe
Token: SeShutdownPrivilege	1028	msdcsc.exe
Token: SeDebugPrivilege	1028	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1028	msdcsc.exe
Token: SeChangeNotifyPrivilege	1028	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1028	msdcsc.exe
Token: SeUndockPrivilege	1028	msdcsc.exe
Token: SeManageVolumePrivilege	1028	msdcsc.exe
Token: SeImpersonatePrivilege	1028	msdcsc.exe
Token: SeCreateGlobalPrivilege	1028	msdcsc.exe
Token: 33	1028	msdcsc.exe
Token: 34	1028	msdcsc.exe
Token: 35	1028	msdcsc.exe
Token: 36	1028	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3160	iexplore.exe
Token: SeSecurityPrivilege	3160	iexplore.exe
Token: SeTakeOwnershipPrivilege	3160	iexplore.exe
Token: SeLoadDriverPrivilege	3160	iexplore.exe
Token: SeSystemProfilePrivilege	3160	iexplore.exe
Token: SeSystemtimePrivilege	3160	iexplore.exe
Token: SeProfSingleProcessPrivilege	3160	iexplore.exe
Token: SeIncBasePriorityPrivilege	3160	iexplore.exe
Token: SeCreatePagefilePrivilege	3160	iexplore.exe
Token: SeBackupPrivilege	3160	iexplore.exe
Token: SeRestorePrivilege	3160	iexplore.exe
Token: SeShutdownPrivilege	3160	iexplore.exe
Token: SeDebugPrivilege	3160	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3160	iexplore.exe
Token: SeChangeNotifyPrivilege	3160	iexplore.exe
Token: SeRemoteShutdownPrivilege	3160	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

3160 iexplore.exe

pid	process
3160	iexplore.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 4836 wrote to memory of 2188	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 4836 wrote to memory of 2188	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 4836 wrote to memory of 2188	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 4836 wrote to memory of 4740	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 4836 wrote to memory of 4740	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 4836 wrote to memory of 4740	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	cmd.exe
PID 2188 wrote to memory of 1668	2188	cmd.exe	attrib.exe
PID 2188 wrote to memory of 1668	2188	cmd.exe	attrib.exe
PID 2188 wrote to memory of 1668	2188	cmd.exe	attrib.exe
PID 4740 wrote to memory of 1044	4740	cmd.exe	attrib.exe
PID 4740 wrote to memory of 1044	4740	cmd.exe	attrib.exe
PID 4740 wrote to memory of 1044	4740	cmd.exe	attrib.exe
PID 4836 wrote to memory of 1028	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	msdcsc.exe
PID 4836 wrote to memory of 1028	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	msdcsc.exe
PID 4836 wrote to memory of 1028	4836	d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe	msdcsc.exe
PID 1028 wrote to memory of 3160	1028	msdcsc.exe	iexplore.exe
PID 1028 wrote to memory of 3160	1028	msdcsc.exe	iexplore.exe
PID 1028 wrote to memory of 3160	1028	msdcsc.exe	iexplore.exe
PID 1028 wrote to memory of 3160	1028	msdcsc.exe	iexplore.exe
PID 1028 wrote to memory of 3160	1028	msdcsc.exe	iexplore.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.exe	notepad.exe
PID 3160 wrote to memory of 3248	3160	iexplore.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

1668 attrib.exe
1044 attrib.exe

pid	process
1668	attrib.exe
1044	attrib.exe

C:\Users\Admin\AppData\Local\Temp\d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe
"C:\Users\Admin\AppData\Local\Temp\d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.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:4836

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2188

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b.exe" +s +h
3⤵
- Views/modifies file attributes
PID:1668

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:4740

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1044

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1028

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies firewall policy service
- Modifies security service
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3160

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:3248

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
659KB

MD5
6ea013f9f0eb1aa74f82928a81ecffd1

SHA1
9c23422cfa55dea80866774ea16c019226175449

SHA256
d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

SHA512
888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
659KB

MD5
6ea013f9f0eb1aa74f82928a81ecffd1

SHA1
9c23422cfa55dea80866774ea16c019226175449

SHA256
d37f9d1f9d0004a75a162841661fb825b12447aff4701f2dbd36abbf04ac965b

SHA512
888ef5266a4f761965aa176ddf7b8ae8b699f4b2ec7ab589679fad2f5fdd37b80da7d5d3290ed3f6ba1d29b60a338e7463e71f6c5e0ec7a491996977eda0eed5

Download Submit
memory/1028-134-0x0000000000000000-mapping.dmp

Download
memory/1044-133-0x0000000000000000-mapping.dmp

Download
memory/1668-132-0x0000000000000000-mapping.dmp

Download
memory/2188-130-0x0000000000000000-mapping.dmp

Download
memory/3248-137-0x0000000000000000-mapping.dmp

Download
memory/4740-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads