xtremerat | 8a61b40e6bd77e9870b69388ea5395813d429cdec27b127c5fabc5435b366d74

Analysis

max time kernel
92s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 02:12

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe
Size

33KB
MD5

437af2c37a5e12a218baba4bbd4a2041
SHA1

a6048fcd8382f3346df64755567730ecf7e09b6f
SHA256

8a61b40e6bd77e9870b69388ea5395813d429cdec27b127c5fabc5435b366d74
SHA512

46cba01a44b79fa6a019812bc37c12da97cc966d7a964f44d5951c8bd1d55b8e5059a6bf01933337ffbc18f5884c8c4ff2ab1b5657251c06ca8eed4be64a689b
SSDEEP

768:FMuijtHf5g7/IIG3bGcYDBSvFIWuePQtv66lARtzSbqByeuH:ONW71rcYDAWeotvXlAXQ

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

aa123.zapto.org

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/1028-1-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4540-2-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1028-3-0x0000000010000000-0x000000001004D000-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
behavioral2/memory/4540-0-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1028-1-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4540-2-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1028-3-0x0000000010000000-0x000000001004D000-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
4356	1028	WerFault.exe	82
4016	1028	WerFault.exe	82

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_437af2c37a5e12a218baba4bbd4a2041.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 1028	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	82
PID 4540 wrote to memory of 1028	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	82
PID 4540 wrote to memory of 1028	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	82
PID 4540 wrote to memory of 1028	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	82
PID 4540 wrote to memory of 2936	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	83
PID 4540 wrote to memory of 2936	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	83
PID 4540 wrote to memory of 2936	4540	JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_437af2c37a5e12a218baba4bbd4a2041.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1028
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 480
    3⤵
    - Program crash
    PID:4356
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 500
    3⤵
    - Program crash
    PID:4016
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
  2⤵
  PID:2936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1028 -ip 1028
1⤵
PID:4068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1028 -ip 1028
1⤵
PID:2932

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1028-1-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1028-3-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4540-0-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4540-2-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download