darkcomet | 6d387f757614021951e7765e02524844f75d31311435aa910d93f79de6916827

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/09/2024, 06:21

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General

Target
логин и пароль.exe
Size 253KB
Sample240913-g4hbbaydpl
SHA256 e89267a54794e083fe2cc0e5fc74f97f8d2bfcce2adebdedd6a40b60bcfbfa57
MD5 d588819dad06e564e71c65faf3b8d9ef
SHA1 fa1801968dc147454084ed538af45ae6fba32b77
SHA512 7199afff022ea7a0a8f65b4e98b08ea201f99e4bef259ff020af6bc8983ac3b96ca7fd2607ad0f61b11b0caa8a8d53fe4f7b007713f32e0fb340e5455ad82d71
SSDEEP 6144:oD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZR:ol8E4w5huat7UovONzbXwV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

kapyc4uno.ddns.net:1604
kapyc4uno.ddns.net:27015

Mutex

DC_MUTEX-NZSLX6Q

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
i5hgGvqw3YAN
install
true
offline_keylogger
false
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

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\i5hgGvqw3YAN\\msdcsc.exe"	логин и пароль.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	логин и пароль.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	логин и пароль.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	логин и пароль.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	логин и пароль.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	логин и пароль.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	логин и пароль.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	логин и пароль.exe

Disables Task Manager via registry modification
evasion

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1156	attrib.exe
2088	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	логин и пароль.exe

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4336-0-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-3-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-5-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-6-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-7-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-8-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-9-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-10-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-11-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-12-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-13-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-14-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-15-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-16-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-17-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4336-18-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	логин и пароль.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	логин и пароль.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\i5hgGvqw3YAN\\msdcsc.exe"	логин и пароль.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\MSDCSC\i5hgGvqw3YAN\msdcsc.exe	логин и пароль.exe
File opened for modification	C:\Windows\MSDCSC\i5hgGvqw3YAN\	логин и пароль.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	логин и пароль.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4336	логин и пароль.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4336	логин и пароль.exe
Token: SeSecurityPrivilege	4336	логин и пароль.exe
Token: SeTakeOwnershipPrivilege	4336	логин и пароль.exe
Token: SeLoadDriverPrivilege	4336	логин и пароль.exe
Token: SeSystemProfilePrivilege	4336	логин и пароль.exe
Token: SeSystemtimePrivilege	4336	логин и пароль.exe
Token: SeProfSingleProcessPrivilege	4336	логин и пароль.exe
Token: SeIncBasePriorityPrivilege	4336	логин и пароль.exe
Token: SeCreatePagefilePrivilege	4336	логин и пароль.exe
Token: SeBackupPrivilege	4336	логин и пароль.exe
Token: SeRestorePrivilege	4336	логин и пароль.exe
Token: SeShutdownPrivilege	4336	логин и пароль.exe
Token: SeDebugPrivilege	4336	логин и пароль.exe
Token: SeSystemEnvironmentPrivilege	4336	логин и пароль.exe
Token: SeChangeNotifyPrivilege	4336	логин и пароль.exe
Token: SeRemoteShutdownPrivilege	4336	логин и пароль.exe
Token: SeUndockPrivilege	4336	логин и пароль.exe
Token: SeManageVolumePrivilege	4336	логин и пароль.exe
Token: SeImpersonatePrivilege	4336	логин и пароль.exe
Token: SeCreateGlobalPrivilege	4336	логин и пароль.exe
Token: 33	4336	логин и пароль.exe
Token: 34	4336	логин и пароль.exe
Token: 35	4336	логин и пароль.exe
Token: 36	4336	логин и пароль.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 4336 wrote to memory of 1596	4336	логин и пароль.exe	84
PID 4336 wrote to memory of 1596	4336	логин и пароль.exe	84
PID 4336 wrote to memory of 1596	4336	логин и пароль.exe	84
PID 4336 wrote to memory of 4948	4336	логин и пароль.exe	86
PID 4336 wrote to memory of 4948	4336	логин и пароль.exe	86
PID 4336 wrote to memory of 4948	4336	логин и пароль.exe	86
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 4336 wrote to memory of 1016	4336	логин и пароль.exe	87
PID 1596 wrote to memory of 1156	1596	cmd.exe	89
PID 1596 wrote to memory of 1156	1596	cmd.exe	89
PID 1596 wrote to memory of 1156	1596	cmd.exe	89
PID 4948 wrote to memory of 2088	4948	cmd.exe	90
PID 4948 wrote to memory of 2088	4948	cmd.exe	90
PID 4948 wrote to memory of 2088	4948	cmd.exe	90

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	логин и пароль.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	логин и пароль.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	логин и пароль.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1156	attrib.exe
2088	attrib.exe

C:\Users\Admin\AppData\Local\Temp\логин и пароль.exe
"C:\Users\Admin\AppData\Local\Temp\логин и пароль.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Disables RegEdit via registry modification
- Checks computer location settings
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\????? ? ??????.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\????? ? ??????.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2088
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1016