xtremerat | 1538b7406bc0c3f1d8fc6e83d5e87071ecff1632e13909bbacabe337ecd09f09

General

Target

JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
Size

788KB
MD5

a18f1578fec60da63811257fe3829b0e
SHA1

bc6d198258cf6fdc1336ca77edbc427fb65aa03e
SHA256

1538b7406bc0c3f1d8fc6e83d5e87071ecff1632e13909bbacabe337ecd09f09
SHA512

9615650d415025c169d439294bdd943a02724831e6f4707917c5668a12b8a16a848f96d9871e83f6135cbc80b1de2b4ccb765a26b57eae5c744ff2e6673744d1
SSDEEP

12288:mYaIc7AtPbuGa+BSkEpzmUyyJVzYKj86snJ:7X04PbFBSkcmUyyJpYOeJ

Score

10^/10

xtremerat bootkit discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/2076-18-0x0000000010000000-0x0000000010048000-memory.dmp	family_xtremerat
behavioral1/memory/2076-20-0x0000000010000000-0x0000000010048000-memory.dmp	family_xtremerat
behavioral1/memory/2076-19-0x0000000010000000-0x0000000010048000-memory.dmp	family_xtremerat
behavioral1/memory/2076-25-0x0000000010000000-0x0000000010048000-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_a18f1578fec60da63811257fe3829b0e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\fdjjd\ghdfgt.dll	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
File created	C:\Program Files (x86)\fdjjd\ghdfgt.dll	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.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 2 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_a18f1578fec60da63811257fe3829b0e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
2076	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28
PID 2396 wrote to memory of 2076	2396	JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe	28

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18f1578fec60da63811257fe3829b0e.exe
  2⤵
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2076

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/2076-18-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2076-25-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2076-19-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2076-20-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2076-21-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/2396-2-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-14-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2396-6-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-5-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-4-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-0-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/2396-1-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2396-12-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/2396-13-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2396-7-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-17-0x0000000000401000-0x0000000000592000-memory.dmp

Filesize
1.6MB

Download
memory/2396-8-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-9-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-23-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/2396-10-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-11-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2396-3-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads