asyncrat | 12631c9b83e06b20eb1727eff06e2d6e264e8c58d62ea6ee5d351d195af3502a

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23/07/2024, 19:05

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
XClient.exe
Size 34KB
Sample240723-xrmy2ashrj
SHA256 12631c9b83e06b20eb1727eff06e2d6e264e8c58d62ea6ee5d351d195af3502a
MD5 8bb9d79ea292fc23e600ebd7957e9333
SHA1 4e78c73a5383f14edc669260524da4bdd5130c36
SHA512 35101121210917d2dfd34e48f1b29e8806637b58cd18a0bbf93da1ee6decfac12ce55c0820e22c691287c7572bcdba69fc5d134ba4834c015aa553250d6383d8
SSDEEP 384:+xYQVyqLSxEe4fIETsI5feQjFptmByujICLYFiiXmv50QAXnxF8QFhk58pkFyHBp:yrvaUuYsIQehkVFyr9eWTOjhmSDc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat stormkitty xworm default credential_access discovery persistence privilege_escalation rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Version

insurance-helmet.gl.at.ply.gg:31388

Mutex

wbZwsAW8h4Ee9jvd

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6758433214:AAHsOKdFy4qDz6vRHO6UQUpRG85G-wZvC1Y/sendMessage?chat_id=6234857847

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/784-1-0x0000000000370000-0x000000000037E000-memory.dmp	family_xworm

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wvrarh.exe"	wvrarh.exe

StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0004000000004ed7-10.dat	family_stormkitty
behavioral2/memory/2556-13-0x0000000000F40000-0x0000000000F72000-memory.dmp	family_stormkitty

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0004000000004ed7-10.dat	family_asyncrat

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 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\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
2556	kewebv.exe
2648	wvrarh.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\userini = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wvrarh.exe"	wvrarh.exe

Drops desktop.ini file(s) 6 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	kewebv.exe
File opened for modification	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	kewebv.exe
File created	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	kewebv.exe
File created	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	kewebv.exe
File opened for modification	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	kewebv.exe
File created	C:\Users\Admin\AppData\Local\1f0416e405b5e720044e7ed28e92cd68\Admin@NNYJZAHP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	kewebv.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kewebv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wvrarh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
408	cmd.exe
868	netsh.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	kewebv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	kewebv.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2556	kewebv.exe
2556	kewebv.exe
2556	kewebv.exe
2556	kewebv.exe
2556	kewebv.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	784	XClient.exe
Token: SeDebugPrivilege	784	XClient.exe
Token: SeDebugPrivilege	2556	kewebv.exe
Token: SeShutdownPrivilege	2824	explorer.exe

Suspicious use of FindShellTrayWindow 64 IoCs

pid	Process
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe
2648	wvrarh.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 2556	784	XClient.exe	32
PID 784 wrote to memory of 2556	784	XClient.exe	32
PID 784 wrote to memory of 2556	784	XClient.exe	32
PID 784 wrote to memory of 2556	784	XClient.exe	32
PID 2556 wrote to memory of 408	2556	kewebv.exe	33
PID 2556 wrote to memory of 408	2556	kewebv.exe	33
PID 2556 wrote to memory of 408	2556	kewebv.exe	33
PID 2556 wrote to memory of 408	2556	kewebv.exe	33
PID 408 wrote to memory of 1112	408	cmd.exe	35
PID 408 wrote to memory of 1112	408	cmd.exe	35
PID 408 wrote to memory of 1112	408	cmd.exe	35
PID 408 wrote to memory of 1112	408	cmd.exe	35
PID 408 wrote to memory of 868	408	cmd.exe	36
PID 408 wrote to memory of 868	408	cmd.exe	36
PID 408 wrote to memory of 868	408	cmd.exe	36
PID 408 wrote to memory of 868	408	cmd.exe	36
PID 408 wrote to memory of 2152	408	cmd.exe	37
PID 408 wrote to memory of 2152	408	cmd.exe	37
PID 408 wrote to memory of 2152	408	cmd.exe	37
PID 408 wrote to memory of 2152	408	cmd.exe	37
PID 2556 wrote to memory of 1536	2556	kewebv.exe	38
PID 2556 wrote to memory of 1536	2556	kewebv.exe	38
PID 2556 wrote to memory of 1536	2556	kewebv.exe	38
PID 2556 wrote to memory of 1536	2556	kewebv.exe	38
PID 1536 wrote to memory of 712	1536	cmd.exe	40
PID 1536 wrote to memory of 712	1536	cmd.exe	40
PID 1536 wrote to memory of 712	1536	cmd.exe	40
PID 1536 wrote to memory of 712	1536	cmd.exe	40
PID 1536 wrote to memory of 1872	1536	cmd.exe	41
PID 1536 wrote to memory of 1872	1536	cmd.exe	41
PID 1536 wrote to memory of 1872	1536	cmd.exe	41
PID 1536 wrote to memory of 1872	1536	cmd.exe	41
PID 784 wrote to memory of 2648	784	XClient.exe	42
PID 784 wrote to memory of 2648	784	XClient.exe	42
PID 784 wrote to memory of 2648	784	XClient.exe	42
PID 784 wrote to memory of 2648	784	XClient.exe	42

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:784
- C:\Users\Admin\AppData\Local\Temp\kewebv.exe
  "C:\Users\Admin\AppData\Local\Temp\kewebv.exe"
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    - Suspicious use of WriteProcessMemory
    PID:408
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:1112
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show profile
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Wi-Fi Discovery
      PID:868
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      System Location Discovery: System Language Discovery
      PID:2152
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1536
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:712
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:1872
- C:\Users\Admin\AppData\Local\Temp\wvrarh.exe
  "C:\Users\Admin\AppData\Local\Temp\wvrarh.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  PID:2648

C:\Windows\explorer.exe
explorer.exe
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Suspicious use of AdjustPrivilegeToken
PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

kewebv.exe

Path C:\Users\Admin\AppData\Local\Temp\kewebv.exe
Size 175KB
SHA256 eb40ef4c4b8ba46300b9f95edc2f7f5ad4c7ea1e812580e3cda28b48f9ef0406
MD5 9f2d773fd80c4da7ae3ce95da359f9dc
SHA1 6cb470ad352e52ea0ec5f863ea4ee083e983caed
SHA512 83a6af54e2d550e1b8f20b6709e7f06515e4c491cbc25ebf1f1e62533cb3f71ef9b58a453f64e04eace1b7cb06f55771907047eba4afa993d88453a74825850f
SSDEEP 3072:qe8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTxSwARE+WpCc:a6ewwIwQJ6vKX0c5MlYZ0b2kK
MD5 SHA1 SHA512 SSDEEP

Submit Download

wvrarh.exe

Path C:\Users\Admin\AppData\Local\Temp\wvrarh.exe
Size 436KB
SHA256 5b1267781df5fa980e338f4dacd44984955d92c438209e55088efd1b1820e9ac
MD5 173a4279e79645180febd00f8a66fefe
SHA1 92ed3111f7bf0f63e5089463b04c9dec0d2cd7e8
SHA512 f572abb593a1ffb10f8b106ed9e17d47b2cce4955da965d6915069c3bc310b7365414d6fe49cc63aad3ab0375125afd04949b1cfb9299b27bf34d004c1c2da5f
SSDEEP 12288:7MSU4joci8M6PW1GVFeFd60DFUyheOYM:ASUCpM2W1GvgmyeOv
MD5 SHA1 SHA512 SSDEEP

Submit Download

msgid.dat

Path C:\Users\Admin\AppData\Local\c331f83f8a9f73eb8551e9d05b3eae11\msgid.dat
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

memory/784-0-0x000007FEF50B3000-0x000007FEF50B4000-memory.dmp

Download

memory/784-1-0x0000000000370000-0x000000000037E000-memory.dmp

Download

memory/784-3-0x000007FEF50B0000-0x000007FEF5A9C000-memory.dmp

Download

memory/784-4-0x000007FEF50B3000-0x000007FEF50B4000-memory.dmp

Download

memory/784-5-0x000007FEF50B0000-0x000007FEF5A9C000-memory.dmp

Download

memory/2556-14-0x0000000073F50000-0x000000007463E000-memory.dmp

Download

memory/2556-85-0x0000000073F50000-0x000000007463E000-memory.dmp

Download

memory/2556-13-0x0000000000F40000-0x0000000000F72000-memory.dmp

Download

memory/2556-94-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Download

memory/2556-95-0x0000000073F50000-0x000000007463E000-memory.dmp

Download

memory/2556-96-0x0000000073F50000-0x000000007463E000-memory.dmp

Download

memory/2556-12-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Download

memory/2648-103-0x0000000000400000-0x0000000000474000-memory.dmp

Download