xtremerat | 37e60d9d46f34797ada59d45fb51b3030790ec4934f17893544e465b5185ba11

General

Target
5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe
Size 132KB
Sample240719-fzzjcsvajj
SHA256 37e60d9d46f34797ada59d45fb51b3030790ec4934f17893544e465b5185ba11
MD5 5a9ce2a8c2354f081dc91d59b9e07681
SHA1 900ca8e22f4f5e9786b698dc1bfc7216403fd697
SHA512 d4abbbf5c10fc2414b0bc0f5de9b59c3f0efa0c90ffb22e7bedc37781600fd7e80ba9e3e30adce7bae417403ffcf5cfc00b326eece9a6a727b0c24692d69ec8e
SSDEEP 3072:jQqf2UjjM3BqWjGU/P6yio/03KutlSSKMm:jrf2U/wCyiihvT
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware

Malware Config

Extracted

Family

xtremerat

C2

wer99.no-ip.org

Signatures

Detect XtremeRAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/1728-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1728-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1728-6-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1728-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1520-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4432-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1728-10-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4432-14-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4432-13-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1520-16-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/4432-20-0x0000000010000000-0x000000001004A000-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

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:\\Program Files (x86)\\InstallDir\\Server.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:\\Program Files (x86)\\InstallDir\\Server.exe"	calc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Program Files (x86)\\InstallDir\\Server.exe"	calc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3548 set thread context of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\InstallDir\Server.exe	calc.exe
File created	C:\Program Files (x86)\InstallDir\Server.exe	calc.exe
File opened for modification	C:\Program Files (x86)\InstallDir\	calc.exe

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

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
232	1520	WerFault.exe	86
4968	4432	WerFault.exe	88
3292	1520	WerFault.exe	86
4100	4432	WerFault.exe	88

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe
4432	calc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 3548 wrote to memory of 1728	3548	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	84
PID 1728 wrote to memory of 1520	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	86
PID 1728 wrote to memory of 1520	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	86
PID 1728 wrote to memory of 1520	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	86
PID 1728 wrote to memory of 1520	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	86
PID 1728 wrote to memory of 4432	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	88
PID 1728 wrote to memory of 4432	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	88
PID 1728 wrote to memory of 4432	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	88
PID 1728 wrote to memory of 4432	1728	5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3548
- C:\Users\Admin\AppData\Local\Temp\5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\5a9ce2a8c2354f081dc91d59b9e07681_JaffaCakes118.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:1520
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 484
      4⤵
      Program crash
      PID:232
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 492
      4⤵
      Program crash
      PID:3292
- - C:\Windows\SysWOW64\calc.exe
    calc.exe
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - Adds Run key to start application
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    PID:4432
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -s 984
      4⤵
      Program crash
      PID:4968
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -s 992
      4⤵
      Program crash
      PID:4100