xtremerat | ef77e3495ed4bef4d394c392bd41e4a615bd0756d576f4c089be3385d526a3b1

General

Target

684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
Size

344KB
MD5

684923775d4f01cf59e8247a1e09cd3d
SHA1

6a0785837e0bc9da498d709db5d3aa81773561f9
SHA256

ef77e3495ed4bef4d394c392bd41e4a615bd0756d576f4c089be3385d526a3b1
SHA512

0eb4e18117d11dbc8ade3cdc61eac225ab10660cce73b34474815716f638ce557ee7bbe29309919db2ce58e022c1db27369ced3ddaa9085eb3057dda48df0a60
SSDEEP

6144:gJcTCaBYgiWTvWT4erFjf6iywWkYmZ/yvMp:gGTXB9iWper1f6Lnyhp

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4452-5-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4268-6-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4452-7-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4268-8-0x0000000010000000-0x000000001004B000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4696 set thread context of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4452-2-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4452-4-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4452-5-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4268-6-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4452-7-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4268-8-0x0000000010000000-0x000000001004B000-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
1352	4268	WerFault.exe	85
4980	4268	WerFault.exe	85

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	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4696 wrote to memory of 4452	4696	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	84
PID 4452 wrote to memory of 4268	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	85
PID 4452 wrote to memory of 4268	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	85
PID 4452 wrote to memory of 4268	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	85
PID 4452 wrote to memory of 4268	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	85
PID 4452 wrote to memory of 5008	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	87
PID 4452 wrote to memory of 5008	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	87
PID 4452 wrote to memory of 5008	4452	684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\AppData\Local\Temp\684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\684923775d4f01cf59e8247a1e09cd3d_JaffaCakes118.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4268
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 476
      4⤵
      Program crash
      PID:1352
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 472
      4⤵
      Program crash
      PID:4980
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4268 -ip 4268
1⤵
PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4268 -ip 4268
1⤵
PID:2316

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4268-6-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4268-8-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4452-2-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4452-4-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4452-5-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4452-7-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing