xtremerat | 28285bf84653a7a03b8f984260c3aaa51189c6c3e41582397866ea7f9d5eb5fe

General

Target

JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe
Size

230KB
MD5

7b820f6e614ce788a018aa5befc8f47c
SHA1

bef092590ee8ed6f8afade745db64b84d082d0d0
SHA256

28285bf84653a7a03b8f984260c3aaa51189c6c3e41582397866ea7f9d5eb5fe
SHA512

5b224cd767fd1ede5a21c76e93ffaf138da085d413440fb04c2ffcc44ce96eb8b73e4981875cb44562ca76866ba339c984b90a423d5efd6c728fe24d058b9ea1
SSDEEP

6144:D4w8HVGgvnVAXd+AAW4TyQOI5JgpcvqNplcNxavRE/D:E7vPT0Iw5pCaib

Score

10^/10

xtremerat bootkit discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/2316-35-0x0000000013140000-0x00000000131D5000-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_7b820f6e614ce788a018aa5befc8f47c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2832	2316	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 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_7b820f6e614ce788a018aa5befc8f47c.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2832	2316	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe	30
PID 2316 wrote to memory of 2832	2316	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe	30
PID 2316 wrote to memory of 2832	2316	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe	30
PID 2316 wrote to memory of 2832	2316	JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b820f6e614ce788a018aa5befc8f47c.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 208
  2⤵
  - Program crash
  PID:2832

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2316-0-0x0000000013140000-0x00000000131D5000-memory.dmp

Filesize
596KB

Download
memory/2316-1-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-6-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-10-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-14-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-21-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-31-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-34-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/2316-33-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-32-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-30-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-29-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-28-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-27-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-26-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-25-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-24-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-23-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-22-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-20-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-19-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-18-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-17-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-16-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-15-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-13-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-12-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-11-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-9-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-8-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-7-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-5-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-4-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-3-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-2-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/2316-35-0x0000000013140000-0x00000000131D5000-memory.dmp

Filesize
596KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads