asyncrat | 517d641dad9471b535955fcf15ab628b58c78084f2239f6846b64c36f9411c93

Analysis

max time kernel
148s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-12-2024 20:35

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General

Target

Steam Checker by MrViper/Steam checker.exe
Size

175KB
MD5

ec3ee0382b2a468ec1be4006b9dd0d74
SHA1

994b8fc55aab829d1b15167dc03cd8a7e69fb259
SHA256

c814a966f3b992c38a5e2aefba28d36afc16afb6373d6d35a43da77f64262b65
SHA512

aa2580ed54030efd034f814d89d7453caf89b3b16d134597b63b233ec4f75d0247b63e352a4f22632cd2f1591ac15ce8ddb496707e53a76802e5ffeb7a22a1b8
SSDEEP

3072:Me8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP0UZ0b2gTtwAqE+Wpor:lXtb5KcXr7XmfgqtjhAxZ0b2i

Score

10^/10

asyncrat stormkitty default discovery persistence phishing privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot1931615329:AAFxC8GzmBvOI3AyvA7Xz9jpOCJy7wc6kXg/sendMessage?chat_id=1130730583

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/5072-1-0x0000000000920000-0x0000000000952000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
A potential corporate email address has been identified in the URL: WorldWindProResultsDate2024122683520PMSystemWindows10Pro64BitUsernameAdminCompNameHGNBWBGWLanguageenUSAntivirusNotinstalledHardwareCPU12thGenIntelRCoreTMi512400GPUMicrosoftBasicDisplayAdapterRAM16154MBHWIDUnknownPowerNoSystemBattery1Screen1280x720NetworkGatewayIP10.127.0.1InternalIP10.127.1.45ExternalIP181.215.176.83BSSID3e5b0eb42941DomainsinfoBankLogsNodataCryptoLogsNodataFreakyLogsNodataLogsBookmarks5SoftwareDeviceWindowsproductkeyDesktopscreenshotFileGrabberDatabasefiles6TelegramChannel@XSplinter
phishing
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Steam checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Steam checker.exe
File created	C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Steam checker.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
21	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

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 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
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Steam checker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com

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
2488	cmd.exe
3560	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	Steam checker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Steam checker.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe
5072	Steam checker.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5072	Steam checker.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 2488	5072	Steam checker.exe	87
PID 5072 wrote to memory of 2488	5072	Steam checker.exe	87
PID 5072 wrote to memory of 2488	5072	Steam checker.exe	87
PID 2488 wrote to memory of 1976	2488	cmd.exe	89
PID 2488 wrote to memory of 1976	2488	cmd.exe	89
PID 2488 wrote to memory of 1976	2488	cmd.exe	89
PID 2488 wrote to memory of 3560	2488	cmd.exe	90
PID 2488 wrote to memory of 3560	2488	cmd.exe	90
PID 2488 wrote to memory of 3560	2488	cmd.exe	90
PID 2488 wrote to memory of 2056	2488	cmd.exe	91
PID 2488 wrote to memory of 2056	2488	cmd.exe	91
PID 2488 wrote to memory of 2056	2488	cmd.exe	91
PID 5072 wrote to memory of 4500	5072	Steam checker.exe	92
PID 5072 wrote to memory of 4500	5072	Steam checker.exe	92
PID 5072 wrote to memory of 4500	5072	Steam checker.exe	92
PID 4500 wrote to memory of 1500	4500	cmd.exe	94
PID 4500 wrote to memory of 1500	4500	cmd.exe	94
PID 4500 wrote to memory of 1500	4500	cmd.exe	94
PID 4500 wrote to memory of 4540	4500	cmd.exe	95
PID 4500 wrote to memory of 4540	4500	cmd.exe	95
PID 4500 wrote to memory of 4540	4500	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\Steam Checker by MrViper\Steam checker.exe
"C:\Users\Admin\AppData\Local\Temp\Steam Checker by MrViper\Steam checker.exe"
1⤵
- 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:5072
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1976
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:3560
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4500
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1500
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

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

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Downloads

C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\8021b00d6f678d9c214b48708e90550c\Admin@HGNBWBGW_en-US\System\Process.txt

Filesize
4KB

MD5
2b566b33ec7e89deacb56ebfcc4b170b

SHA1
e7c7f8385ed875fe1ac0dae3a8876e646d17da48

SHA256
7c6c1e397454bb25f72d17df1f552da24760ad6f6b9d36e3a8822bf7e3b70b1d

SHA512
acd1d6c6eb94388111ef019bed3e53d9a3c5b0c2ea91d62d947fbba88d6544c824059d80816b2a44cec18bb3941ec937ccab7409056cff28b16414f6471f9e06

Download Submit
C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/5072-3-0x0000000005410000-0x0000000005476000-memory.dmp

Filesize
408KB

Download
memory/5072-0-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download
memory/5072-112-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download
memory/5072-2-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download
memory/5072-134-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download
memory/5072-148-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download
memory/5072-150-0x0000000005E60000-0x0000000005EF2000-memory.dmp

Filesize
584KB

Download
memory/5072-151-0x00000000064B0000-0x0000000006A54000-memory.dmp

Filesize
5.6MB

Download
memory/5072-155-0x0000000006090000-0x000000000609A000-memory.dmp

Filesize
40KB

Download
memory/5072-1-0x0000000000920000-0x0000000000952000-memory.dmp

Filesize
200KB

Download
memory/5072-161-0x00007FF91FB50000-0x00007FF91FD45000-memory.dmp

Filesize
2.0MB

Download