xtremerat | 4f0f9ae838d580d2d59469980c33d1bdb35b3592db87079d8c860f86a3a8cd65

General

Target

7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
Size

605KB
MD5

7701edc1146647bfa3adc72e1263fc14
SHA1

73556b0d6578fb3341e4a5d8d6598d92cad96ba9
SHA256

4f0f9ae838d580d2d59469980c33d1bdb35b3592db87079d8c860f86a3a8cd65
SHA512

90acc4bf42562baa816fe9f006758a2268fb4dec925168e374a29496db1e56d3b0d0994e0acfb2fa14bc7c8f87c6532048421b9c255108dd840963055e82ebd3
SSDEEP

12288:77MJe4vdTfCsrX8Cwt74khOUbKObQ3IhW4ulrVOyQ:77M/lfCMX85tXDHh6Q

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/2500-8-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/2500-9-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/2500-10-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/4956-13-0x0000000010000000-0x000000001004F000-memory.dmp	family_xtremerat
behavioral2/memory/4956-14-0x0000000010000000-0x000000001004F000-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

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 652 set thread context of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83

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
3120	4956	WerFault.exe	85
2112	4956	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	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\kk2081727577r.fay	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\kk2081727577r.fay\ = 034baa29d85a7fd70cd718831208f0a1	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 652 wrote to memory of 2500	652	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	83
PID 2500 wrote to memory of 4956	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	85
PID 2500 wrote to memory of 4956	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	85
PID 2500 wrote to memory of 4956	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	85
PID 2500 wrote to memory of 4956	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	85
PID 2500 wrote to memory of 3932	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	86
PID 2500 wrote to memory of 3932	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	86
PID 2500 wrote to memory of 3932	2500	7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:652
- C:\Users\Admin\AppData\Local\Temp\7701edc1146647bfa3adc72e1263fc14_JaffaCakes118.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4956
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 480
      4⤵
      Program crash
      PID:3120
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 504
      4⤵
      Program crash
      PID:2112
- - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    3⤵
    PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4956 -ip 4956
1⤵
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4956 -ip 4956
1⤵
PID:2196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/652-0-0x0000000000400000-0x00000000004A0000-memory.dmp

Filesize
640KB

Download
memory/652-6-0x0000000000401000-0x0000000000421000-memory.dmp

Filesize
128KB

Download
memory/652-12-0x0000000000401000-0x0000000000421000-memory.dmp

Filesize
128KB

Download
memory/652-11-0x0000000000400000-0x00000000004A0000-memory.dmp

Filesize
640KB

Download
memory/2500-8-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/2500-9-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/2500-10-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/4956-13-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download
memory/4956-14-0x0000000010000000-0x000000001004F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads