xtremerat | 73778274ba4594512defec0aa62b79dcbf43af1e4f9e905c92386d189276ae84

General

Target

fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
Size

198KB
MD5

fa433772a2fbd5d509e9a2b4cbda4a09
SHA1

8d7eaffd18760a2378235c3ab8a9dc697f004e65
SHA256

73778274ba4594512defec0aa62b79dcbf43af1e4f9e905c92386d189276ae84
SHA512

4922614bf77fa612ccf85c04e712fe981a3364e7f336ffd389fa56eefde1896242fa5e20e37e1d99d9ad79895f70f4eaad9aa3e05be16d0519109c236622f2b5
SSDEEP

3072:0XVL++CyQTUh4O43HAk8duEys91lxYC5/qAq+EEtrtzwR1Zx1WAjqY:081yQH7Eys9nxV5/qAYEZtzwR1Zx1

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 1 IoCs

resource	yara_rule
behavioral2/memory/4996-7-0x0000000010000000-0x0000000010048000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4996	svhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
220	4996	WerFault.exe	84

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	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 4324	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	83
PID 2536 wrote to memory of 4324	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	83
PID 2536 wrote to memory of 4324	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	83
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84
PID 2536 wrote to memory of 4996	2536	fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fa433772a2fbd5d509e9a2b4cbda4a09_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe
  C:\Users\Admin\AppData\Local\Temp\\winamp\svhost.exe
  2⤵
  PID:4324
- C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe
  C:\Users\Admin\AppData\Local\Temp\\winamp\svhost.exe
  2⤵
  - Executes dropped EXE
  PID:4996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4996 -s 12
    3⤵
    - Program crash
    PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4996 -ip 4996
1⤵
PID:3968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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

C:\Users\Admin\AppData\Local\Temp\winamp\svhost.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/2536-0-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/2536-1-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2536-2-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2536-10-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/4996-7-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing