xtremerat | b844100579ca6c25135b1c438793a1963e8898643f9cc80e3bb139569f1a19dd

General

Target

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
Size

512KB
MD5

b781b851b6902bf4791e34d07b5556a3
SHA1

244e5eaa934d6db11ee58ab62141d5fe743881d9
SHA256

b844100579ca6c25135b1c438793a1963e8898643f9cc80e3bb139569f1a19dd
SHA512

aa2283a704eed0d41e776cb9bc2067ac1c62b42fa6e4c636fbb5c02a449e6bc4ea726d504ef031490229121996338fe8e1345682416da87784c6dc32c530ce4c
SSDEEP

12288:aujB8jeLvUwZnWwYys49h+TmvzZfvHP/ZRKwmmOXJFBvejst0Hyp:aujamUr2HtZHXjOX7BWjTyp

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

C2

̌zapata36.zapto.org

Signatures

Detect XtremeRAT payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3952-14-0x0000000010000000-0x0000000010058000-memory.dmp	family_xtremerat
behavioral2/memory/376-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_xtremerat
behavioral2/memory/376-20-0x0000000010000000-0x0000000010058000-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

Processes:

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1580 set thread context of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3952-11-0x0000000010000000-0x0000000010058000-memory.dmp	upx
behavioral2/memory/3952-9-0x0000000010000000-0x0000000010058000-memory.dmp	upx
behavioral2/memory/3952-14-0x0000000010000000-0x0000000010058000-memory.dmp	upx
behavioral2/memory/376-17-0x0000000010000000-0x0000000010058000-memory.dmp	upx
behavioral2/memory/376-20-0x0000000010000000-0x0000000010058000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

Processes:

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

description	ioc	Process
File created	C:\Windows\276cover.jpg.exe	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
File created	C:\Windows\276cover.jpg	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
736	376	WerFault.exe	84
3336	376	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

Processes:

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exeb781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

pid	Process
1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exeb781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe

description	pid	Process	procid_target
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 1580 wrote to memory of 3952	1580	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	83
PID 3952 wrote to memory of 376	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	84
PID 3952 wrote to memory of 376	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	84
PID 3952 wrote to memory of 376	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	84
PID 3952 wrote to memory of 376	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	84
PID 3952 wrote to memory of 3188	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	85
PID 3952 wrote to memory of 3188	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	85
PID 3952 wrote to memory of 3188	3952	b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\AppData\Local\Temp\b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b781b851b6902bf4791e34d07b5556a3_JaffaCakes118.exe"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3952
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:376
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 376 -s 476
      4⤵
      Program crash
      PID:736
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 376 -s 488
      4⤵
      Program crash
      PID:3336
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 376 -ip 376
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 376 -ip 376
1⤵
PID:116

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/376-17-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/376-20-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/1580-6-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-2-0x0000000000401000-0x000000000041D000-memory.dmp

Filesize
112KB

Download
memory/1580-4-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-5-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-0-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-13-0x0000000000401000-0x000000000041D000-memory.dmp

Filesize
112KB

Download
memory/1580-15-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-3-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/1580-1-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/3952-11-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/3952-9-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/3952-14-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/3952-16-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads