xtremerat | 1fe2261618b3df6a6d7e7de6f75cb2023ae53c7ce8c10947037b4cc5dc015540

General

Target
9cd7a31fdc519cb2d2afe3db99525ed8.exe
Size 175KB
Sample240215-d27lmsfd7z
SHA256 1fe2261618b3df6a6d7e7de6f75cb2023ae53c7ce8c10947037b4cc5dc015540
MD5 9cd7a31fdc519cb2d2afe3db99525ed8
SHA1 edf41c8781009a3a141072daa20338c0d787170f
SHA512 e192769993a40cbfb74efa4aed62d8b23bb636db85364db6766d78d76653d51904f4891896045ff662682846abb2ab33b8500fd08ea5ba3942f058c607509dcb
SSDEEP 3072:ubiuZNXtdE9PROeNkoMNaqpCvbtCx+hDebyRNEaqm4JGMborPteTzdpqBGfZAq05:ki0o9pOeGozqpCvB3eGz3qmbMborPt3v
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/3784-3-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3784-4-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3784-6-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3784-7-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2472-8-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1920-9-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/3784-10-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1920-12-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1920-13-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/2472-14-0x0000000010000000-0x000000001004A000-memory.dmp	family_xtremerat
behavioral2/memory/1920-15-0x0000000010000000-0x000000001004A000-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

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\{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-1-5-21-1168293393-3419776239-306423207-1000\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 680 set thread context of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84

Drops file in Program Files directory 2 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

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
812	2472	WerFault.exe	85
4624	2472	WerFault.exe	85
2920	1920	WerFault.exe	86
864	1920	WerFault.exe	86

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
680	9cd7a31fdc519cb2d2afe3db99525ed8.exe
1920	calc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 680 wrote to memory of 3784	680	9cd7a31fdc519cb2d2afe3db99525ed8.exe	84
PID 3784 wrote to memory of 2472	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	85
PID 3784 wrote to memory of 2472	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	85
PID 3784 wrote to memory of 2472	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	85
PID 3784 wrote to memory of 2472	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	85
PID 3784 wrote to memory of 1920	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	86
PID 3784 wrote to memory of 1920	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	86
PID 3784 wrote to memory of 1920	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	86
PID 3784 wrote to memory of 1920	3784	9cd7a31fdc519cb2d2afe3db99525ed8.EXE	86

C:\Users\Admin\AppData\Local\Temp\9cd7a31fdc519cb2d2afe3db99525ed8.exe
"C:\Users\Admin\AppData\Local\Temp\9cd7a31fdc519cb2d2afe3db99525ed8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:680
- C:\Users\Admin\AppData\Local\Temp\9cd7a31fdc519cb2d2afe3db99525ed8.EXE
  "C:\Users\Admin\AppData\Local\Temp\9cd7a31fdc519cb2d2afe3db99525ed8.EXE"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    PID:2472
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 480
      4⤵
      Program crash
      PID:812
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 488
      4⤵
      Program crash
      PID:4624
- - C:\Windows\SysWOW64\calc.exe
    calc.exe
    3⤵
    - Modifies Installed Components in the registry
    - Adds Run key to start application
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    PID:1920
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 984
      4⤵
      Program crash
      PID:2920
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 992
      4⤵
      Program crash
      PID:864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2472 -ip 2472
1⤵
PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2472 -ip 2472
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1920 -ip 1920
1⤵
PID:2984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1920 -ip 1920
1⤵
PID:1784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/680-5-0x0000000000400000-0x00000000004D2000-memory.dmp

Download

memory/680-0-0x0000000000400000-0x00000000004D2000-memory.dmp

Download

memory/1920-12-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/1920-9-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/1920-13-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/1920-15-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/2472-8-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/2472-14-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3784-4-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3784-6-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3784-7-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3784-10-0x0000000010000000-0x000000001004A000-memory.dmp

Download

memory/3784-3-0x0000000010000000-0x000000001004A000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads