xtremerat | 775dff37bf9b70daf6e2e795bcf8b1950f4d5bd1abb433ab0166fface1e0a587

General

Target

JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
Size

132KB
MD5

3e4cc3b38500d6159db52450da2285fc
SHA1

f2f91c97b5cb0ebfcc777ee6d98eea7362fc8615
SHA256

775dff37bf9b70daf6e2e795bcf8b1950f4d5bd1abb433ab0166fface1e0a587
SHA512

7fabc6aedc7fe7871c20d66aad41ee115db65070422d5501d8ef9f1ae1cfd985c0ade622304a806680601ec4014c5ae945cb4567a8034b0700c0419d1885af54
SSDEEP

1536:/Mn89MvS0RwnSQG+ifi0qtuFAqj2qFx0s45pTPWOFvnbAJycMO8zgWfM:lGvSazQG+ia0q0iK2qboPWoAVfWfM

Score

10^/10

xtremerat bootkit discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

finders.hopto.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/3556-14-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4160-16-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4160-17-0x0000000010000000-0x000000001004D000-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	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3344 set thread context of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 2856 set thread context of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3556-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3556-13-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/3556-14-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4160-16-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4160-17-0x0000000010000000-0x000000001004D000-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
2912	4160	WerFault.exe	86
4492	4160	WerFault.exe	86

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	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 3344 wrote to memory of 2856	3344	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	84
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 2856 wrote to memory of 3556	2856	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	85
PID 3556 wrote to memory of 4160	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	86
PID 3556 wrote to memory of 4160	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	86
PID 3556 wrote to memory of 4160	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	86
PID 3556 wrote to memory of 4160	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	86
PID 3556 wrote to memory of 5000	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	87
PID 3556 wrote to memory of 5000	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	87
PID 3556 wrote to memory of 5000	3556	JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3344
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.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:2856
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e4cc3b38500d6159db52450da2285fc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3556
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:4160
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4160 -s 480
        5⤵
        Program crash
        
        PID:2912
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4160 -s 504
        5⤵
        Program crash
        
        PID:4492
  - - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      4⤵
      PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4160 -ip 4160
1⤵
PID:656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4160 -ip 4160
1⤵
PID:3064

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/2856-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2856-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2856-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3556-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3556-13-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/3556-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3556-14-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4160-16-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4160-17-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads