darkcomet | 9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Soundcrd.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe

Executes dropped EXE 3 IoCs

pid	Process
2684	Soundcrd.exe
748	Soundcrd.exe
5064	Soundcrd.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2684 set thread context of 748	2684	Soundcrd.exe	90
PID 2684 set thread context of 5064	2684	Soundcrd.exe	91

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/748-32-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5064-39-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/5064-41-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/748-43-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5064-36-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/748-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5064-53-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/748-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/748-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Soundcrd.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	5064	Soundcrd.exe
Token: SeIncreaseQuotaPrivilege	748	Soundcrd.exe
Token: SeSecurityPrivilege	748	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	748	Soundcrd.exe
Token: SeLoadDriverPrivilege	748	Soundcrd.exe
Token: SeSystemProfilePrivilege	748	Soundcrd.exe
Token: SeSystemtimePrivilege	748	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	748	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	748	Soundcrd.exe
Token: SeCreatePagefilePrivilege	748	Soundcrd.exe
Token: SeBackupPrivilege	748	Soundcrd.exe
Token: SeRestorePrivilege	748	Soundcrd.exe
Token: SeShutdownPrivilege	748	Soundcrd.exe
Token: SeDebugPrivilege	748	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	748	Soundcrd.exe
Token: SeChangeNotifyPrivilege	748	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	748	Soundcrd.exe
Token: SeUndockPrivilege	748	Soundcrd.exe
Token: SeManageVolumePrivilege	748	Soundcrd.exe
Token: SeImpersonatePrivilege	748	Soundcrd.exe
Token: SeCreateGlobalPrivilege	748	Soundcrd.exe
Token: 33	748	Soundcrd.exe
Token: 34	748	Soundcrd.exe
Token: 35	748	Soundcrd.exe
Token: 36	748	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe
2684	Soundcrd.exe
5064	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 2064	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	85
PID 5112 wrote to memory of 2064	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	85
PID 5112 wrote to memory of 2064	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	85
PID 2064 wrote to memory of 4420	2064	cmd.exe	88
PID 2064 wrote to memory of 4420	2064	cmd.exe	88
PID 2064 wrote to memory of 4420	2064	cmd.exe	88
PID 5112 wrote to memory of 2684	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	89
PID 5112 wrote to memory of 2684	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	89
PID 5112 wrote to memory of 2684	5112	9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe	89
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 748	2684	Soundcrd.exe	90
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91
PID 2684 wrote to memory of 5064	2684	Soundcrd.exe	91

C:\Users\Admin\AppData\Local\Temp\9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe
"C:\Users\Admin\AppData\Local\Temp\9400cc468e1e76428cb4d4541872ad27f69c640a78aab60e42ad2802edcd80b3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\gpole.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4420
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:748
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:5064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

4

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery