xtremerat | 24c71817c6727812a252651685ae359cd67cd59b32ba2500012d66680652211b

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 09:19

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General

Target
8ec82ca83b465f1833f5df5a16bcdc4f.exe
Size 81KB
Sample240204-k99vasgdcj
SHA256 24c71817c6727812a252651685ae359cd67cd59b32ba2500012d66680652211b
MD5 8ec82ca83b465f1833f5df5a16bcdc4f
SHA1 047be141ec6fd5f150b1bd015b437e3a683607d8
SHA512 b859d853895fe82a251e865f2b8477ed6204f2cec94f4430729fe929dedd9ad2dc0db4f5aa5c873a04705e9272b41b99ec5642c90064aeb7199c92f05ac92dc1
SSDEEP 768:rBr+tjFqTPkAlfztB1lr6an3smTA8uvm26rzocCEeU2FMQB9Yl:FyRUHlrL1lr6an3TLuvm26vocf6MQBa
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xtremerat persistence rat spyware upx

Malware Config

Extracted

Family

xtremerat

用尰rivalvoy.no-ip.org

Signatures

Detect XtremeRAT payload 4 IoCs

resource	yara_rule
behavioral2/memory/4580-0-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/4508-4-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/4580-5-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xtremerat
behavioral2/memory/4508-7-0x0000000000C80000-0x0000000000C96000-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

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}	8ec82ca83b465f1833f5df5a16bcdc4f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart"	8ec82ca83b465f1833f5df5a16bcdc4f.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4580-0-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4508-4-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4580-5-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx
behavioral2/memory/4508-7-0x0000000000C80000-0x0000000000C96000-memory.dmp	upx

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\\Server.exe"	8ec82ca83b465f1833f5df5a16bcdc4f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe"	8ec82ca83b465f1833f5df5a16bcdc4f.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\InstallDir\Server.exe	8ec82ca83b465f1833f5df5a16bcdc4f.exe
File created	C:\Windows\SysWOW64\InstallDir\Server.exe	8ec82ca83b465f1833f5df5a16bcdc4f.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4508	explorer.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 4508	4580	8ec82ca83b465f1833f5df5a16bcdc4f.exe	84
PID 4580 wrote to memory of 4508	4580	8ec82ca83b465f1833f5df5a16bcdc4f.exe	84
PID 4580 wrote to memory of 4508	4580	8ec82ca83b465f1833f5df5a16bcdc4f.exe	84
PID 4580 wrote to memory of 4508	4580	8ec82ca83b465f1833f5df5a16bcdc4f.exe	84

C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe
"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"
1⤵
- Modifies Installed Components in the registry
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:4508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4508-4-0x0000000000C80000-0x0000000000C96000-memory.dmp

Download

memory/4508-7-0x0000000000C80000-0x0000000000C96000-memory.dmp

Download

memory/4580-0-0x0000000000C80000-0x0000000000C96000-memory.dmp

Download

memory/4580-5-0x0000000000C80000-0x0000000000C96000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads