xtremerat | 249247e67ef295a5ddfda8efc2e88abb10ecf05cc0e1fda7089b36794f599e83

General

Target
JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe
Size 95KB
Sample250320-cc71fazvdz
SHA256 249247e67ef295a5ddfda8efc2e88abb10ecf05cc0e1fda7089b36794f599e83
MD5 80d1e5b8b5d64fbc76b768e05cce43c7
SHA1 6e6a1453fcbb30e96402b4936234db1d2ec9651f
SHA512 75a3ed58062cbe536cd7601b899b48f9727edc031737d8431af530384d82eaed0aee7350a180894a96984613d78d01e1ce2c4d79e6cc8cd0709f8cad1930023f
SSDEEP 1536:2psRlTCJVbE4HS3nM0ZsFFT/QbazprM5tGFO0sK5BCceQ6WEakIN+0QGBVBIl2if:LaVbDHmuTQUMad5EcqPB6IlhPnH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/2512-7-0x0000000010000000-0x0000000010054000-memory.dmp	family_xtremerat
behavioral2/memory/4116-9-0x0000000010000000-0x0000000010054000-memory.dmp	family_xtremerat
behavioral2/memory/2512-10-0x0000000010000000-0x0000000010054000-memory.dmp	family_xtremerat
behavioral2/memory/4116-11-0x0000000010000000-0x0000000010054000-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 4360 set thread context of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2512-3-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/2512-5-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/2512-7-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/2512-8-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/4116-9-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/2512-10-0x0000000010000000-0x0000000010054000-memory.dmp	upx
behavioral2/memory/4116-11-0x0000000010000000-0x0000000010054000-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
5312	4116	WerFault.exe	87
1760	4116	WerFault.exe	87

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_80d1e5b8b5d64fbc76b768e05cce43c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 4360 wrote to memory of 2512	4360	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	86
PID 2512 wrote to memory of 4116	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	87
PID 2512 wrote to memory of 4116	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	87
PID 2512 wrote to memory of 4116	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	87
PID 2512 wrote to memory of 4116	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	87
PID 2512 wrote to memory of 1112	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	89
PID 2512 wrote to memory of 1112	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	89
PID 2512 wrote to memory of 1112	2512	JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_80d1e5b8b5d64fbc76b768e05cce43c7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4116
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 480
      4⤵
      Program crash
      PID:5312
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 504
      4⤵
      Program crash
      PID:1760
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4116 -ip 4116
1⤵
PID:3684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4116 -ip 4116
1⤵
PID:3176

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

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Downloads

memory/2512-3-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/2512-5-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/2512-7-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/2512-8-0x0000000010000000-0x0000000010054000-memory.dmp

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memory/2512-10-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/4116-9-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/4116-11-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/4360-0-0x0000000000400000-0x0000000000411000-memory.dmp

Download

memory/4360-6-0x0000000000400000-0x0000000000411000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads