xtremerat | 8019903919c7330a0b4d30dc339280a58736cd748ad8a045213e6f905893a7d1

General

Target
a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
Size 608KB
Sample241126-tr2kmsvngm
SHA256 8019903919c7330a0b4d30dc339280a58736cd748ad8a045213e6f905893a7d1
MD5 a2ed1f80ee06b027fc944d6c2f6b163c
SHA1 09e0348cf0db690ebb09afc0c34cf1c367cb3c84
SHA512 8be7ab788b4125b2139215f09be9239a4e410d8eea78917a7ac0907b1a90aa872627b88f8e2a0a6a6ed9291e3f9439064784baeb5e46b86308118a227201cdab
SSDEEP 3072:zPSntbmP+T1st246/YXyKqNaKniNMPKF9dE9kprz4c03rg6qF+c7Et7fa3/1vff:zPSXc1X
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat discovery persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

laptope.sytes.net

Signatures

Detect XtremeRAT payload 9 IoCs

resource	yara_rule
behavioral2/memory/5104-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-2-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-5-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2296-6-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2296-11-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/5104-12-0x0000000010000000-0x000000001004A000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{C66CJXUT-448C-308Y-8F8A-58C001V6P1IW}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{C66CJXUT-448C-308Y-8F8A-58C001V6P1IW}	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.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\\InstallDir\\Server.exe"	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
File created	C:\Windows\InstallDir\Server.exe	a2ed1f80ee06b027fc944d6c2f6b163c_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

pid	pid_target	Process	procid_target
1912	2296	WerFault.exe	83
3640	2296	WerFault.exe	83

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	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
5104	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 1916 wrote to memory of 5104	1916	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	82
PID 5104 wrote to memory of 2296	5104	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	83
PID 5104 wrote to memory of 2296	5104	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	83
PID 5104 wrote to memory of 2296	5104	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	83
PID 5104 wrote to memory of 2296	5104	a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a2ed1f80ee06b027fc944d6c2f6b163c_JaffaCakes118.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5104
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2296
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2296 -s 480
      4⤵
      Program crash
      PID:1912
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2296 -s 488
      4⤵
      Program crash
      PID:3640