xtremerat | b4f3f9826f537b1fc82a148edabf7bfc0189651be717a7034fca3049ece92cf8

General

Target

3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe
Size

50KB
MD5

3f59f00e8e47377cb9426be75e069ad8
SHA1

c7867f203227d5d8a373cae54778cfb26b4282c3
SHA256

b4f3f9826f537b1fc82a148edabf7bfc0189651be717a7034fca3049ece92cf8
SHA512

943e8520ac47cc9d9dcd3fe466565d1cc46b7f69cbe23c8f2170f6a1842d20aa9b9b07197c5a21a1a727dd910fd7140b04a0ee29feb7af960641b6d916a55173
SSDEEP

1536:aNDdMySo3GIA6O/LN6XhIImAik+EsAFvc3FgMku:aND6ySoWZRDehIVka+vc3T

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/1236-8-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1236-9-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4908-10-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/1236-11-0x0000000010000000-0x000000001004B000-memory.dmp	family_xtremerat
behavioral2/memory/4908-12-0x0000000010000000-0x000000001004B000-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 4152 set thread context of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1236-3-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1236-7-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1236-8-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1236-9-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4908-10-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1236-11-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4908-12-0x0000000010000000-0x000000001004B000-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
1064	4908	WerFault.exe	87
2440	4908	WerFault.exe	87

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	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 4152 wrote to memory of 1236	4152	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	85
PID 1236 wrote to memory of 4908	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	87
PID 1236 wrote to memory of 4908	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	87
PID 1236 wrote to memory of 4908	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	87
PID 1236 wrote to memory of 4908	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	87
PID 1236 wrote to memory of 2016	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	88
PID 1236 wrote to memory of 2016	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	88
PID 1236 wrote to memory of 2016	1236	3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Users\Admin\AppData\Local\Temp\3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\3f59f00e8e47377cb9426be75e069ad8_JaffaCakes118.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1236
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4908
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 488
      4⤵
      Program crash
      PID:1064
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4908 -s 496
      4⤵
      Program crash
      PID:2440
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4908 -ip 4908
1⤵
PID:4076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4908 -ip 4908
1⤵
PID:3496

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/1236-3-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1236-7-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1236-8-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1236-9-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/1236-11-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4152-0-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4152-6-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4908-10-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download
memory/4908-12-0x0000000010000000-0x000000001004B000-memory.dmp

Filesize
300KB

Download

Analysis

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