darkcomet | 428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782

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-1-5-21-1318997816-2171176372-1451785247-1000\Control Panel\International\Geo\Nation	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe

Executes dropped EXE 3 IoCs

pid	Process
4428	Soundcrd.exe
2524	Soundcrd.exe
2384	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-1-5-21-1318997816-2171176372-1451785247-1000\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 4428 set thread context of 2524	4428	Soundcrd.exe	93
PID 4428 set thread context of 2384	4428	Soundcrd.exe	94

UPX packed file 26 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2524-31-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-37-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-39-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2384-45-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2524-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2384-43-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2384-40-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2524-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2384-52-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2524-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-96-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2524-100-0x0000000000400000-0x00000000004B5000-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 7 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	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4824	MicrosoftEdgeUpdate.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\VendorIdentifier	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
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

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: SeIncreaseQuotaPrivilege	2524	Soundcrd.exe
Token: SeSecurityPrivilege	2524	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2524	Soundcrd.exe
Token: SeLoadDriverPrivilege	2524	Soundcrd.exe
Token: SeSystemProfilePrivilege	2524	Soundcrd.exe
Token: SeSystemtimePrivilege	2524	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2524	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2524	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2524	Soundcrd.exe
Token: SeBackupPrivilege	2524	Soundcrd.exe
Token: SeRestorePrivilege	2524	Soundcrd.exe
Token: SeShutdownPrivilege	2524	Soundcrd.exe
Token: SeDebugPrivilege	2524	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2524	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2524	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2524	Soundcrd.exe
Token: SeUndockPrivilege	2524	Soundcrd.exe
Token: SeManageVolumePrivilege	2524	Soundcrd.exe
Token: SeDebugPrivilege	2384	Soundcrd.exe
Token: SeImpersonatePrivilege	2524	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2524	Soundcrd.exe
Token: 33	2524	Soundcrd.exe
Token: 34	2524	Soundcrd.exe
Token: 35	2524	Soundcrd.exe
Token: 36	2524	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe
4428	Soundcrd.exe
2384	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 456	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	88
PID 2200 wrote to memory of 456	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	88
PID 2200 wrote to memory of 456	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	88
PID 456 wrote to memory of 2724	456	cmd.exe	91
PID 456 wrote to memory of 2724	456	cmd.exe	91
PID 456 wrote to memory of 2724	456	cmd.exe	91
PID 2200 wrote to memory of 4428	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	92
PID 2200 wrote to memory of 4428	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	92
PID 2200 wrote to memory of 4428	2200	428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe	92
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2524	4428	Soundcrd.exe	93
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94
PID 4428 wrote to memory of 2384	4428	Soundcrd.exe	94

C:\Users\Admin\AppData\Local\Temp\428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe
"C:\Users\Admin\AppData\Local\Temp\428296838557d8ea5e7a4b7c027653e6794ec6a56035bda6310f5c0a795b6782N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\xhZTo.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:456
- - 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:2724
- 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:4428
- - 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:2524
- - 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:2384

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMzNzEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDE5Mjc1MzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1Nzg4ODQ0ODM3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4824

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

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery