xtremerat | ae3a4c7066f285986735bd794a8264488afda4ff4b7099644b3f9f06776928f3

General

Target

9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe
Size

192KB
MD5

9db9d2e6798ab2f676f5c02379a77b20
SHA1

15b677f60169e10448aa38145ef0fdf7fdbcb2c7
SHA256

ae3a4c7066f285986735bd794a8264488afda4ff4b7099644b3f9f06776928f3
SHA512

d135e8b39123b2c8ff47368f80fa13c018d9ced5276487aa7be1e034d3a6fe3a18aa9b1836a23522956edc1d537da916adf48e358b96ea0e06760344c33780aa
SSDEEP

3072:1EasXSH0+4dMs09rwGUV0olfUeol6TsS2wqH6EBb29Vo92k8j89RIx:nsXSr4dO9TOUeVq1BaVRkw89RI

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

x4r.sytes.net

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/408-9-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1928-10-0x0000000010000000-0x000000001004D000-memory.dmp	family_xtremerat
behavioral2/memory/1928-11-0x0000000010000000-0x000000001004D000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1060 set thread context of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/408-4-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/408-6-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/408-9-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1928-10-0x0000000010000000-0x000000001004D000-memory.dmp	upx
behavioral2/memory/1928-11-0x0000000010000000-0x000000001004D000-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
4964	1928	WerFault.exe	84
3516	1928	WerFault.exe	84

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 1060 wrote to memory of 408	1060	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	83
PID 408 wrote to memory of 1928	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	84
PID 408 wrote to memory of 1928	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	84
PID 408 wrote to memory of 1928	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	84
PID 408 wrote to memory of 1928	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	84
PID 408 wrote to memory of 4588	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	85
PID 408 wrote to memory of 4588	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	85
PID 408 wrote to memory of 4588	408	9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1060
- C:\Users\Admin\AppData\Local\Temp\9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\9db9d2e6798ab2f676f5c02379a77b20_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:408
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1928
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 484
      4⤵
      Program crash
      PID:4964
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 492
      4⤵
      Program crash
      PID:3516
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:4588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1928 -ip 1928
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1928 -ip 1928
1⤵
PID:772

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

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Downloads

memory/408-4-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/408-6-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/408-9-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1060-0-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1060-1-0x0000000000401000-0x000000000045E000-memory.dmp

Filesize
372KB

Download
memory/1060-8-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1928-10-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download
memory/1928-11-0x0000000010000000-0x000000001004D000-memory.dmp

Filesize
308KB

Download

Analysis

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