xtremerat | c28eb7adc19622cf758d8cf50dd5d5ecda5b3ab2bba4b4371d71a1d26cdffdcc

General

Target

JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
Size

200KB
MD5

74c6ae456868e8af5f1f381380698a16
SHA1

1159ec5cf06d6458e850ec2c120f43c5254ab614
SHA256

c28eb7adc19622cf758d8cf50dd5d5ecda5b3ab2bba4b4371d71a1d26cdffdcc
SHA512

168aac57b5e83abf35c589dbe5e1291a3e529723481766527523f192f89c7dc78bf1e6383aaa1b41de12e93e090dac98a72f7ade623b893c7e04bfc1adf99a2e
SSDEEP

3072:HVojj3az/DS9XMjaQTC+YgEAQIIOraBIpPQMPo+Pzrc77OWw8x8cv:H+6HSMaOiAdraBCDoAc769/c

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4684-6-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4384-8-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4684-9-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4384-10-0x0000000010000000-0x000000001004B000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3516 set thread context of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4684-2-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4684-5-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4684-6-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4684-7-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4384-8-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4684-9-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4384-10-0x0000000010000000-0x000000001004B000-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
3968	4384	WerFault.exe	83
3544	4384	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 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_74c6ae456868e8af5f1f381380698a16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies registry class 2 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 3516 wrote to memory of 4684	3516	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	82
PID 4684 wrote to memory of 4384	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	83
PID 4684 wrote to memory of 4384	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	83
PID 4684 wrote to memory of 4384	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	83
PID 4684 wrote to memory of 4384	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	83
PID 4684 wrote to memory of 2756	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	84
PID 4684 wrote to memory of 2756	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	84
PID 4684 wrote to memory of 2756	4684	JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74c6ae456868e8af5f1f381380698a16.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4684
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4384
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 216
      4⤵
      Program crash
      PID:3968
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 488
      4⤵
      Program crash
      PID:3544
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4384 -ip 4384
1⤵
PID:3676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4384 -ip 4384
1⤵
PID:4600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

memory/3516-4-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4384-8-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4384-10-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4684-2-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4684-5-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4684-6-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4684-7-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4684-9-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download

Analysis

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