xtremerat | 900a8220457194571af73dee187f7f891060788a2a44777ff7e02ccf7ef393ed

General

Target

96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
Size

176KB
MD5

96a865f4e3bf64190538406a69ecde25
SHA1

3f9357f1ddcb84de90aa79bde0ebf7bc1817dc97
SHA256

900a8220457194571af73dee187f7f891060788a2a44777ff7e02ccf7ef393ed
SHA512

e523228ad94faa19bfe8a5f090ab78403bfe7a5a4b791ff4c8dedbcc69fa475d399e74aac222241eb6d756d6eff89c86ec25473df6070df9f16740f68c53af0d
SSDEEP

3072:Box+1aE004Hyscz+1458zAcMXmjtBzcf8pi:k+fEnczLuM2jty

Score

10^/10

xtremerat bootkit discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/1448-12-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2508-14-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/2508-15-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
Xtremerat family
xtremerat

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3204 set thread context of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3772 set thread context of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1448-7-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1448-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1448-12-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2508-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/2508-15-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5004	2508	WerFault.exe	88
4516	2508	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 4 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	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3204 wrote to memory of 3772	3204	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	86
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 3772 wrote to memory of 1448	3772	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	87
PID 1448 wrote to memory of 2508	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	88
PID 1448 wrote to memory of 2508	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	88
PID 1448 wrote to memory of 2508	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	88
PID 1448 wrote to memory of 2508	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	88
PID 1448 wrote to memory of 2788	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	89
PID 1448 wrote to memory of 2788	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	89
PID 1448 wrote to memory of 2788	1448	96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe	89

C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3772
- - C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\96a865f4e3bf64190538406a69ecde25_JaffaCakes118.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1448
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:2508
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 480
        5⤵
        Program crash
        
        PID:5004
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2508 -s 504
        5⤵
        Program crash
        
        PID:4516
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:2788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2508 -ip 2508
1⤵
PID:4720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2508 -ip 2508
1⤵
PID:4500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1448-7-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1448-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1448-13-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1448-12-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2508-14-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/2508-15-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3772-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3772-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3772-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads