darkcomet | 98b49dda6a6fcdfa0bfd1557bff2fce72107aa383a84498ec474cba7b3b1b97d

System Information Discovery

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

Executes dropped EXE 2 IoCs

pid	Process
2700	conhost.exe
1048	conhost.exe

Loads dropped DLL 5 IoCs

pid	Process
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\Console Window Host = "C:\\Users\\Admin\\AppData\\Roaming\\Console Window Host\\conhost.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 1048	2700	conhost.exe	35

UPX packed file 27 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2940-0-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral1/memory/2940-19-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral1/files/0x0004000000004ed7-26.dat	upx
behavioral1/memory/2700-43-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral1/memory/1048-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2700-53-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral1/memory/1048-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2940-48-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral1/memory/1048-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1048-72-0x0000000000400000-0x00000000004B5000-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 5 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	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.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	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.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	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	conhost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	conhost.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	conhost.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1048	conhost.exe
Token: SeSecurityPrivilege	1048	conhost.exe
Token: SeTakeOwnershipPrivilege	1048	conhost.exe
Token: SeLoadDriverPrivilege	1048	conhost.exe
Token: SeSystemProfilePrivilege	1048	conhost.exe
Token: SeSystemtimePrivilege	1048	conhost.exe
Token: SeProfSingleProcessPrivilege	1048	conhost.exe
Token: SeIncBasePriorityPrivilege	1048	conhost.exe
Token: SeCreatePagefilePrivilege	1048	conhost.exe
Token: SeBackupPrivilege	1048	conhost.exe
Token: SeRestorePrivilege	1048	conhost.exe
Token: SeShutdownPrivilege	1048	conhost.exe
Token: SeDebugPrivilege	1048	conhost.exe
Token: SeSystemEnvironmentPrivilege	1048	conhost.exe
Token: SeChangeNotifyPrivilege	1048	conhost.exe
Token: SeRemoteShutdownPrivilege	1048	conhost.exe
Token: SeUndockPrivilege	1048	conhost.exe
Token: SeManageVolumePrivilege	1048	conhost.exe
Token: SeImpersonatePrivilege	1048	conhost.exe
Token: SeCreateGlobalPrivilege	1048	conhost.exe
Token: 33	1048	conhost.exe
Token: 34	1048	conhost.exe
Token: 35	1048	conhost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
2700	conhost.exe
1048	conhost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2632	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	30
PID 2940 wrote to memory of 2632	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	30
PID 2940 wrote to memory of 2632	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	30
PID 2940 wrote to memory of 2632	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	30
PID 2632 wrote to memory of 3024	2632	cmd.exe	32
PID 2632 wrote to memory of 3024	2632	cmd.exe	32
PID 2632 wrote to memory of 3024	2632	cmd.exe	32
PID 2632 wrote to memory of 3024	2632	cmd.exe	32
PID 2940 wrote to memory of 2700	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	34
PID 2940 wrote to memory of 2700	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	34
PID 2940 wrote to memory of 2700	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	34
PID 2940 wrote to memory of 2700	2940	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	34
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35
PID 2700 wrote to memory of 1048	2700	conhost.exe	35

C:\Users\Admin\AppData\Local\Temp\d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\BRiAQ.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Console Window Host" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:3024
- C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe
  "C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe
    False
    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
    - Suspicious use of SetWindowsHookEx
    PID:1048

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

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery