darkcomet | 175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922

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:

175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2576	Soundcrd.exe
4344	Soundcrd.exe
3620	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 2576 set thread context of 4344	2576	Soundcrd.exe	93
PID 2576 set thread context of 3620	2576	Soundcrd.exe	94

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4344-31-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3620-36-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4344-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3620-43-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4344-42-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-47-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3620-40-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4344-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/3620-50-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/4344-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/4344-75-0x0000000000400000-0x00000000004B5000-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:

Soundcrd.exeSoundcrd.exeSoundcrd.exe175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.execmd.exereg.exe

description	ioc	Process
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	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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	4344	Soundcrd.exe
Token: SeSecurityPrivilege	4344	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	4344	Soundcrd.exe
Token: SeLoadDriverPrivilege	4344	Soundcrd.exe
Token: SeSystemProfilePrivilege	4344	Soundcrd.exe
Token: SeSystemtimePrivilege	4344	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	4344	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	4344	Soundcrd.exe
Token: SeCreatePagefilePrivilege	4344	Soundcrd.exe
Token: SeBackupPrivilege	4344	Soundcrd.exe
Token: SeRestorePrivilege	4344	Soundcrd.exe
Token: SeShutdownPrivilege	4344	Soundcrd.exe
Token: SeDebugPrivilege	4344	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	4344	Soundcrd.exe
Token: SeChangeNotifyPrivilege	4344	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	4344	Soundcrd.exe
Token: SeUndockPrivilege	4344	Soundcrd.exe
Token: SeManageVolumePrivilege	4344	Soundcrd.exe
Token: SeImpersonatePrivilege	4344	Soundcrd.exe
Token: SeCreateGlobalPrivilege	4344	Soundcrd.exe
Token: 33	4344	Soundcrd.exe
Token: 34	4344	Soundcrd.exe
Token: 35	4344	Soundcrd.exe
Token: 36	4344	Soundcrd.exe
Token: SeDebugPrivilege	3620	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exeSoundcrd.exeSoundcrd.exe

pid	Process
5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe
2576	Soundcrd.exe
3620	Soundcrd.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 5088 wrote to memory of 2796	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	87
PID 5088 wrote to memory of 2796	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	87
PID 5088 wrote to memory of 2796	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	87
PID 2796 wrote to memory of 4528	2796	cmd.exe	90
PID 2796 wrote to memory of 4528	2796	cmd.exe	90
PID 2796 wrote to memory of 4528	2796	cmd.exe	90
PID 5088 wrote to memory of 2576	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	91
PID 5088 wrote to memory of 2576	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	91
PID 5088 wrote to memory of 2576	5088	175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe	91
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 4344	2576	Soundcrd.exe	93
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94
PID 2576 wrote to memory of 3620	2576	Soundcrd.exe	94

C:\Users\Admin\AppData\Local\Temp\175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe
"C:\Users\Admin\AppData\Local\Temp\175fe12292a6e352ff920e5233673bf19f7f4673d7ca5929f1f5ee3042628922N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BAKJE.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2796
- - 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:4528
- 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:2576
- - 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:4344
- - 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:3620

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