darkcomet | eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff

General

Target

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Size

684KB
MD5

c775dcdb0994c60cc8b509941a942f4b
SHA1

c8407672ff546460ed3795982aab9022f94fc1fc
SHA256

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff
SHA512

0089f0e7352c223106c0efc993b94e2ab6ae20ab9dab546eaee1936f5c3d895f1f41beb4eacda5478db8a241f99616f1340711a37ae72ee5dc2d04cb7eb09f1f
SSDEEP

12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h:eZ1xuVVjfFoynPaVBUR8f+kN10EB

Score

10^/10

darkcomet victim evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Victim

C2

hamed2004.noip.me:1604

46.225.114.171:1604

Mutex

DC_MUTEX-1P99558

Attributes

InstallPath
MSDCSC\explorer1.exe
gencode
5pgHPKHjMMZG
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:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\explorer1.exe"	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe

Executes dropped EXE 1 IoCs

Processes:

explorer1.exe

pid process

5044 explorer1.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

4808 attrib.exe
1452 attrib.exe

pid	process
5044	explorer1.exe

pid	process
4808	attrib.exe
1452	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:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exeexplorer1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\explorer1.exe"	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\explorer1.exe"	explorer1.exe

Drops file in Windows directory 3 IoCs

Processes:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe

description	ioc	process
File created	C:\Windows\MSDCSC\explorer1.exe	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
File opened for modification	C:\Windows\MSDCSC\explorer1.exe	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
File opened for modification	C:\Windows\MSDCSC\	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.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:

explorer1.exe

pid process

5044 explorer1.exe

pid	process
5044	explorer1.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exeexplorer1.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeSecurityPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeTakeOwnershipPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeLoadDriverPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeSystemProfilePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeSystemtimePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeProfSingleProcessPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeIncBasePriorityPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeCreatePagefilePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeBackupPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeRestorePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeShutdownPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeDebugPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeSystemEnvironmentPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeChangeNotifyPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeRemoteShutdownPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeUndockPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeManageVolumePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeImpersonatePrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeCreateGlobalPrivilege	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: 33	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: 34	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: 35	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: 36	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
Token: SeIncreaseQuotaPrivilege	5044	explorer1.exe
Token: SeSecurityPrivilege	5044	explorer1.exe
Token: SeTakeOwnershipPrivilege	5044	explorer1.exe
Token: SeLoadDriverPrivilege	5044	explorer1.exe
Token: SeSystemProfilePrivilege	5044	explorer1.exe
Token: SeSystemtimePrivilege	5044	explorer1.exe
Token: SeProfSingleProcessPrivilege	5044	explorer1.exe
Token: SeIncBasePriorityPrivilege	5044	explorer1.exe
Token: SeCreatePagefilePrivilege	5044	explorer1.exe
Token: SeBackupPrivilege	5044	explorer1.exe
Token: SeRestorePrivilege	5044	explorer1.exe
Token: SeShutdownPrivilege	5044	explorer1.exe
Token: SeDebugPrivilege	5044	explorer1.exe
Token: SeSystemEnvironmentPrivilege	5044	explorer1.exe
Token: SeChangeNotifyPrivilege	5044	explorer1.exe
Token: SeRemoteShutdownPrivilege	5044	explorer1.exe
Token: SeUndockPrivilege	5044	explorer1.exe
Token: SeManageVolumePrivilege	5044	explorer1.exe
Token: SeImpersonatePrivilege	5044	explorer1.exe
Token: SeCreateGlobalPrivilege	5044	explorer1.exe
Token: 33	5044	explorer1.exe
Token: 34	5044	explorer1.exe
Token: 35	5044	explorer1.exe
Token: 36	5044	explorer1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

explorer1.exe

pid process

5044 explorer1.exe

pid	process
5044	explorer1.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.execmd.execmd.exeexplorer1.exe

description	pid	process	target process
PID 4740 wrote to memory of 2708	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 2708	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 2708	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 5096	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 5096	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 5096	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	cmd.exe
PID 4740 wrote to memory of 5044	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	explorer1.exe
PID 4740 wrote to memory of 5044	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	explorer1.exe
PID 4740 wrote to memory of 5044	4740	eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe	explorer1.exe
PID 2708 wrote to memory of 1452	2708	cmd.exe	attrib.exe
PID 2708 wrote to memory of 1452	2708	cmd.exe	attrib.exe
PID 2708 wrote to memory of 1452	2708	cmd.exe	attrib.exe
PID 5096 wrote to memory of 4808	5096	cmd.exe	attrib.exe
PID 5096 wrote to memory of 4808	5096	cmd.exe	attrib.exe
PID 5096 wrote to memory of 4808	5096	cmd.exe	attrib.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe
PID 5044 wrote to memory of 3440	5044	explorer1.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4808 attrib.exe
1452 attrib.exe

pid	process
4808	attrib.exe
1452	attrib.exe

C:\Users\Admin\AppData\Local\Temp\eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe
"C:\Users\Admin\AppData\Local\Temp\eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4740

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2708

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1452

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:5096

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4808

C:\Windows\MSDCSC\explorer1.exe
"C:\Windows\MSDCSC\explorer1.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5044

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\MSDCSC\explorer1.exe

Filesize
684KB

MD5
c775dcdb0994c60cc8b509941a942f4b

SHA1
c8407672ff546460ed3795982aab9022f94fc1fc

SHA256
eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff

SHA512
0089f0e7352c223106c0efc993b94e2ab6ae20ab9dab546eaee1936f5c3d895f1f41beb4eacda5478db8a241f99616f1340711a37ae72ee5dc2d04cb7eb09f1f

Download Submit
C:\Windows\MSDCSC\explorer1.exe

Filesize
684KB

MD5
c775dcdb0994c60cc8b509941a942f4b

SHA1
c8407672ff546460ed3795982aab9022f94fc1fc

SHA256
eef8c0e6f8afc5e3d77eb21b7e55fce5a2a167ad2cd20850da84999e112d1eff

SHA512
0089f0e7352c223106c0efc993b94e2ab6ae20ab9dab546eaee1936f5c3d895f1f41beb4eacda5478db8a241f99616f1340711a37ae72ee5dc2d04cb7eb09f1f

Download Submit
memory/1452-137-0x0000000000000000-mapping.dmp

Download
memory/2708-132-0x0000000000000000-mapping.dmp

Download
memory/3440-139-0x0000000000000000-mapping.dmp

Download
memory/4808-138-0x0000000000000000-mapping.dmp

Download
memory/5044-134-0x0000000000000000-mapping.dmp

Download
memory/5096-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads