xtremerat | 131678102693d7cb312432265a563e56ec7c05f120f7ea8615df3827807fe770

Analysis

max time kernel
103s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
07/04/2025, 18:29

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General

Target

JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe
Size

97KB
MD5

a05cb17861be3132760f054dddcbd241
SHA1

46b3c98e572d70a625e7d7c788145f055c939f2b
SHA256

131678102693d7cb312432265a563e56ec7c05f120f7ea8615df3827807fe770
SHA512

fe8bf2a583497da347e2f3515ce527fc9e7e974b954374d38b1e88ce54bda410d42d3e7701d0396c7cdc478f7a76f1872c2f6d8021cac9d1a4614a9c38e67459
SSDEEP

3072:KNW7dEvotvX5gXI3oWBcljfed0zQVQen482qlezyx+V:KNW7mvIJuIn6xOQYN2qlezO0

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/5592-1-0x0000000010000000-0x000000001005D000-memory.dmp	family_xtremerat
behavioral1/memory/5636-5-0x0000000010000000-0x000000001005D000-memory.dmp	family_xtremerat
behavioral1/memory/5592-6-0x0000000010000000-0x000000001005D000-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

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/5636-0-0x0000000010000000-0x000000001005D000-memory.dmp	upx
behavioral1/memory/5592-1-0x0000000010000000-0x000000001005D000-memory.dmp	upx
behavioral1/memory/5636-5-0x0000000010000000-0x000000001005D000-memory.dmp	upx
behavioral1/memory/5592-6-0x0000000010000000-0x000000001005D000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\177twak.jpg.exe	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe
File created	C:\Windows\177twak.jpg	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe

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
1544	5592	WerFault.exe	85
980	5592	WerFault.exe	85

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_a05cb17861be3132760f054dddcbd241.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5636 wrote to memory of 5592	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	85
PID 5636 wrote to memory of 5592	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	85
PID 5636 wrote to memory of 5592	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	85
PID 5636 wrote to memory of 5592	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	85
PID 5636 wrote to memory of 1896	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	87
PID 5636 wrote to memory of 1896	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	87
PID 5636 wrote to memory of 1896	5636	JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a05cb17861be3132760f054dddcbd241.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5592
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5592 -s 484
    3⤵
    - Program crash
    PID:1544
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5592 -s 492
    3⤵
    - Program crash
    PID:980
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5592 -ip 5592
1⤵
PID:1184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 5592 -ip 5592
1⤵
PID:2484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/5592-1-0x0000000010000000-0x000000001005D000-memory.dmp

Filesize
372KB

Download
memory/5592-6-0x0000000010000000-0x000000001005D000-memory.dmp

Filesize
372KB

Download
memory/5636-0-0x0000000010000000-0x000000001005D000-memory.dmp

Filesize
372KB

Download
memory/5636-5-0x0000000010000000-0x000000001005D000-memory.dmp

Filesize
372KB

Download