xtremerat | bec5c782cdb85aa065113a474a0a9b7e6eed4ea616852a20d5cbc899f5ce8dd0

General

Target

526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe
Size

176KB
MD5

526468e0b3668b1630ab5cb4ede43a38
SHA1

53edf74074ebd98e2cd831c94cedc3fc6970a364
SHA256

bec5c782cdb85aa065113a474a0a9b7e6eed4ea616852a20d5cbc899f5ce8dd0
SHA512

5a8008481df46967ea4b79cd2d48fcfef25bbd1eff85056b9b55fa5b024d03e7b7c944f030d5cccb834e5393826c05affa380818505582e96149943fe61e40af
SSDEEP

3072:DMsG2Xc+88LsQCTqVhn8eRY6DiZp6tQ/azLJayik8xrS9J7l8sxK0sfhroL:I+c+NgQCohn8eR3IbMJaxkd+mEhrM

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4052-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1848-10-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1848-11-0x0000000010000000-0x000000001004A000-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 4764 set thread context of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4052-4-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4052-8-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/4052-9-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1848-10-0x0000000010000000-0x000000001004A000-memory.dmp	upx
behavioral2/memory/1848-11-0x0000000010000000-0x000000001004A000-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
3824	1848	WerFault.exe	85
2324	1848	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4764 wrote to memory of 4052	4764	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	84
PID 4052 wrote to memory of 1848	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	85
PID 4052 wrote to memory of 1848	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	85
PID 4052 wrote to memory of 1848	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	85
PID 4052 wrote to memory of 1848	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	85
PID 4052 wrote to memory of 1600	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	87
PID 4052 wrote to memory of 1600	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	87
PID 4052 wrote to memory of 1600	4052	526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\Temp\526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\526468e0b3668b1630ab5cb4ede43a38_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4052
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1848
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 468
      4⤵
      Program crash
      PID:3824
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 500
      4⤵
      Program crash
      PID:2324
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:1600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1848 -ip 1848
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1848 -ip 1848
1⤵
PID:5036

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/1848-10-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1848-11-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4052-4-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4052-8-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4052-9-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4764-0-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/4764-1-0x0000000000401000-0x0000000000459000-memory.dmp

Filesize
352KB

Download
memory/4764-7-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download

Analysis

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