darkcomet | c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44

System Information Discovery

Processes:

Soundcrd.exe

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

Processes:

c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2716	Soundcrd.exe
4140	Soundcrd.exe
5040	Soundcrd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2716 set thread context of 4140	2716	Soundcrd.exe	92
PID 2716 set thread context of 5040	2716	Soundcrd.exe	93

UPX packed file 23 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/904-0-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral2/files/0x0008000000023c95-16.dat	upx
behavioral2/memory/904-30-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral2/memory/4140-31-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-33-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5040-35-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4140-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5040-39-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/5040-42-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4140-43-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2716-49-0x0000000000400000-0x00000000007EC000-memory.dmp	upx
behavioral2/memory/4140-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-47-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-41-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5040-51-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4140-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4140-76-0x0000000000400000-0x00000000004B5000-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

Processes:

cmd.exereg.exeSoundcrd.exeSoundcrd.exeSoundcrd.exec0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe

description	ioc	Process
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	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.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

Processes:

Soundcrd.exe

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

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

Processes:

Soundcrd.exe

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

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4140	Soundcrd.exe
Token: SeSecurityPrivilege	4140	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	4140	Soundcrd.exe
Token: SeLoadDriverPrivilege	4140	Soundcrd.exe
Token: SeSystemProfilePrivilege	4140	Soundcrd.exe
Token: SeSystemtimePrivilege	4140	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	4140	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	4140	Soundcrd.exe
Token: SeCreatePagefilePrivilege	4140	Soundcrd.exe
Token: SeBackupPrivilege	4140	Soundcrd.exe
Token: SeRestorePrivilege	4140	Soundcrd.exe
Token: SeShutdownPrivilege	4140	Soundcrd.exe
Token: SeDebugPrivilege	4140	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	4140	Soundcrd.exe
Token: SeChangeNotifyPrivilege	4140	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	4140	Soundcrd.exe
Token: SeUndockPrivilege	4140	Soundcrd.exe
Token: SeManageVolumePrivilege	4140	Soundcrd.exe
Token: SeImpersonatePrivilege	4140	Soundcrd.exe
Token: SeCreateGlobalPrivilege	4140	Soundcrd.exe
Token: 33	4140	Soundcrd.exe
Token: 34	4140	Soundcrd.exe
Token: 35	4140	Soundcrd.exe
Token: 36	4140	Soundcrd.exe
Token: SeDebugPrivilege	5040	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exeSoundcrd.exeSoundcrd.exe

pid	Process
904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe
2716	Soundcrd.exe
5040	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 904 wrote to memory of 4056	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	85
PID 904 wrote to memory of 4056	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	85
PID 904 wrote to memory of 4056	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	85
PID 4056 wrote to memory of 2860	4056	cmd.exe	89
PID 4056 wrote to memory of 2860	4056	cmd.exe	89
PID 4056 wrote to memory of 2860	4056	cmd.exe	89
PID 904 wrote to memory of 2716	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	90
PID 904 wrote to memory of 2716	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	90
PID 904 wrote to memory of 2716	904	c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe	90
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 4140	2716	Soundcrd.exe	92
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93
PID 2716 wrote to memory of 5040	2716	Soundcrd.exe	93

C:\Users\Admin\AppData\Local\Temp\c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe
"C:\Users\Admin\AppData\Local\Temp\c0d05ffb5f48fb2dc50ca22aa8e664c5b3f8eaf9b14575d9990953e4c3129b44.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:904
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EDnlk.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4056
- - 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:2860
- 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:2716
- - 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:4140
- - 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:5040

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