revengerat | df57bad53e8a72aad344e6cc2644fe757cf2ae0744a8c0f1c6c0caff63379203

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe

RevengeRat Executable 1 IoCs

stealer

resource	yara_rule
behavioral2/files/0x00070000000234b7-30.dat	revengerat

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	GoldHaxV2.98464Bit.exe
Key value queried	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	Windows Security Health Service.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome updater.exe	Usermode Font Driver Host.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome updater.exe	Usermode Font Driver Host.exe

Executes dropped EXE 6 IoCs

pid	Process
1960	GoldHaxV2.98464Bit.exe
2084	GoldHax V2.984 64 Bit.EXE
4388	Windows Security Health Service.exe
620	Usermode Font Driver Host.exe
548	Usermode Font Driver Host.exe
1700	Usermode Font Driver Host.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Software\Wine	7285fe11585198388f629e081d1c0f83_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-1-5-21-384068567-2943195810-3631207890-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Usermode Font Driver = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Usermode Font Driver Host.exe"	Usermode Font Driver Host.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe

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 9 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	Usermode Font Driver Host.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	getmac.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GoldHax V2.984 64 Bit.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Usermode Font Driver Host.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Security Health Service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Usermode Font Driver Host.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
2632	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
1960	GoldHaxV2.98464Bit.exe
1960	GoldHaxV2.98464Bit.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
Token: SeDebugPrivilege	1960	GoldHaxV2.98464Bit.exe
Token: SeDebugPrivilege	4388	Windows Security Health Service.exe
Token: SeDebugPrivilege	620	Usermode Font Driver Host.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 1960	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe	87
PID 5000 wrote to memory of 1960	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe	87
PID 5000 wrote to memory of 2484	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe	88
PID 5000 wrote to memory of 2484	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe	88
PID 5000 wrote to memory of 2484	5000	7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe	88
PID 2484 wrote to memory of 2404	2484	cmd.exe	90
PID 2484 wrote to memory of 2404	2484	cmd.exe	90
PID 2484 wrote to memory of 2404	2484	cmd.exe	90
PID 1960 wrote to memory of 2084	1960	GoldHaxV2.98464Bit.exe	92
PID 1960 wrote to memory of 2084	1960	GoldHaxV2.98464Bit.exe	92
PID 1960 wrote to memory of 2084	1960	GoldHaxV2.98464Bit.exe	92
PID 1960 wrote to memory of 4388	1960	GoldHaxV2.98464Bit.exe	95
PID 1960 wrote to memory of 4388	1960	GoldHaxV2.98464Bit.exe	95
PID 1960 wrote to memory of 4388	1960	GoldHaxV2.98464Bit.exe	95
PID 4388 wrote to memory of 620	4388	Windows Security Health Service.exe	105
PID 4388 wrote to memory of 620	4388	Windows Security Health Service.exe	105
PID 4388 wrote to memory of 620	4388	Windows Security Health Service.exe	105
PID 620 wrote to memory of 2632	620	Usermode Font Driver Host.exe	107
PID 620 wrote to memory of 2632	620	Usermode Font Driver Host.exe	107
PID 620 wrote to memory of 2632	620	Usermode Font Driver Host.exe	107

C:\Users\Admin\AppData\Local\Temp\7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7285fe11585198388f629e081d1c0f83_JaffaCakes118.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5000
- C:\Users\Admin\AppData\Local\Temp\GoldHaxV2.98464Bit.exe
  "C:\Users\Admin\AppData\Local\Temp\GoldHaxV2.98464Bit.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Users\Admin\AppData\Local\Temp\GoldHax V2.984 64 Bit.EXE
    "C:\Users\Admin\AppData\Local\Temp\GoldHax V2.984 64 Bit.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2084
- - C:\Users\Admin\AppData\Local\Temp\Windows Security Health Service.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Security Health Service.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4388
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe"
      4⤵
      Drops startup file
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:620
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /sc minute /mo 1 /tn "Chrome Updater" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c getmac /v /fo list
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2484
- - C:\Windows\SysWOW64\getmac.exe
    getmac /v /fo list
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2404

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:548

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Usermode Font Driver Host.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion