xtremerat | 4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85

General

Target

4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe
Size

141KB
MD5

fed012a067d88de8813c44b0ae3c2d5a
SHA1

b8c874c10321058b3247850880329bfd294e4f91
SHA256

4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85
SHA512

0eb878ea3030d126b80cc7429127bed6775853084a02db4c435e91253fc5e569ee14529e332778215a064add33d4d05aefee5d5fd0dbaf8250a4b0e880fe6d04
SSDEEP

3072:RmVZ3bRZW2+dzaw0sMJttlUyFlI+e+RpOdKqWUuRj:aRDWB5A80I+svfuRj

Score

10^/10

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/600-140-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4496-141-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/600-142-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4496-143-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/4496-144-0x0000000010000000-0x000000001004D000-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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/600-136-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/600-139-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/600-140-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/600-142-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4496-143-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/4496-144-0x0000000010000000-0x000000001004D000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 536 set thread context of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3832	4496	WerFault.exe	82

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 536 wrote to memory of 600	536	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	81
PID 600 wrote to memory of 4496	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	82
PID 600 wrote to memory of 4496	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	82
PID 600 wrote to memory of 4496	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	82
PID 600 wrote to memory of 4496	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	82
PID 600 wrote to memory of 2280	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	83
PID 600 wrote to memory of 2280	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	83
PID 600 wrote to memory of 2280	600	4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe	83

C:\Users\Admin\AppData\Local\Temp\4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe
"C:\Users\Admin\AppData\Local\Temp\4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Local\Temp\4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe
  C:\Users\Admin\AppData\Local\Temp\4427b579ca5f236df5555b5a2081d4878bb87380f8454389be2ea7d93099df85.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:600
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:4496
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 496
      4⤵
      Program crash
      PID:3832
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4496 -ip 4496
1⤵
PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4496 -ip 4496
1⤵
PID:4668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/536-132-0x0000000000400000-0x0000000000440970-memory.dmp

Filesize
258KB

Download
memory/536-138-0x0000000000400000-0x0000000000440970-memory.dmp

Filesize
258KB

Download
memory/600-136-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/600-139-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/600-140-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/600-142-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4496-143-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/4496-144-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing