xtremerat | bc8aef38da0e4e5490c22bbbddde839e5a6dccd7e94529fd8227c664ba0a3e94

General

Target

JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe
Size

65KB
MD5

410cd2fb84ee3f29ab01f5680d2f8987
SHA1

95f7be7bcef5fb88c058694d60f6087c85ccf3b7
SHA256

bc8aef38da0e4e5490c22bbbddde839e5a6dccd7e94529fd8227c664ba0a3e94
SHA512

07404307acfe021dd0bb115e0500865c855be5655001d7ad8698acd3f7c5fd8ff4c8e2d4cb4973155ac74176e0e47469af63e259981d44e263d01cbe1775e729
SSDEEP

768:e8m1Sq4NQErBsH1tzoisBKQI6dObAG/dqOXHsoAx5JXrUqLOY0pYKnA+7PoNwhzX:ssq+QV4rObAdNoAf5UqiYmlArNwpoc/

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

laptope.sytes.net

Signatures

Detect XtremeRAT payload 5 IoCs

resource	yara_rule
behavioral2/memory/1848-0-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4180-1-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1848-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1848-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1848-6-0x0000000010000000-0x000000001004A000-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
Xtremerat family
xtremerat

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	calc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\system32\\InstallDir\\xtreme.exe restart"	calc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\xtreme.exe"	calc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\xtreme.exe"	calc.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\InstallDir\xtreme.exe	calc.exe
File opened for modification	C:\Windows\SysWOW64\InstallDir\xtreme.exe	calc.exe

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
4212	1848	WerFault.exe	83
3148	1848	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 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	JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1848	calc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4180 wrote to memory of 1848	4180	JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe	83
PID 4180 wrote to memory of 1848	4180	JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe	83
PID 4180 wrote to memory of 1848	4180	JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe	83
PID 4180 wrote to memory of 1848	4180	JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_410cd2fb84ee3f29ab01f5680d2f8987.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Windows\SysWOW64\calc.exe
  calc.exe
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1848
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 980
    3⤵
    - Program crash
    PID:4212
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1848 -s 988
    3⤵
    - Program crash
    PID:3148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1848 -ip 1848
1⤵
PID:2416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1848 -ip 1848
1⤵
PID:1776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

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

Filesize
296KB

Download
memory/1848-4-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1848-3-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/1848-6-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download
memory/4180-1-0x0000000010000000-0x000000001004A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads