asyncrat | 850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e

Resubmissions

13-01-2025 01:17

250113-bnf6es1mgl 10

12-01-2025 12:40

250112-pwjheasna1 10

11-01-2025 04:17

250111-ewb38atkcv 10

Analysis

max time kernel
896s
max time network
847s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-01-2025 12:40

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General

Target

850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
Size

1.1MB
MD5

a7649256fce8b15959edd1004df7781b
SHA1

314294d940b110265283531e9e62b3dea6fb4506
SHA256

850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e
SHA512

8b06a739f05a731d7edafe7bbc9b6a6e083dbb3d8d96fe1bba110147401caf8bd1b51268cf1db0ad15dbd92b584c3a3d6174dfdee47669b9f8b6510735c4cf5b
SSDEEP

24576:2qDEvCTbMWu7rQYlBQcBiT6rprG8a61V9rWmEbmJsR:2TvC/MTQYxsWR7a6H9rbESJ

Score

10^/10

asyncrat stormkitty default discovery persistence privilege_escalation rat 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/bot7935009733:AAGBu91qWsmUHTs2GabvLt2Z62A3M4QqyqE/sendMessage?chat_id=6779103906

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 4 IoCs

resource	yara_rule
behavioral1/memory/2696-7-0x0000000000090000-0x00000000000C2000-memory.dmp	family_stormkitty
behavioral1/memory/2696-13-0x0000000000090000-0x00000000000C2000-memory.dmp	family_stormkitty
behavioral1/memory/2696-16-0x0000000000090000-0x00000000000C2000-memory.dmp	family_stormkitty
behavioral1/memory/2696-9-0x0000000000090000-0x00000000000C2000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	RegSvcs.exe
File opened for modification	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	RegSvcs.exe
File opened for modification	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	RegSvcs.exe
File opened for modification	C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	RegSvcs.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
4	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3048 set thread context of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30

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 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	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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
2144	cmd.exe
320	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	RegSvcs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2696	RegSvcs.exe
2696	RegSvcs.exe
2696	RegSvcs.exe
2696	RegSvcs.exe
2696	RegSvcs.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2696	RegSvcs.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 3048 wrote to memory of 2696	3048	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	30
PID 2696 wrote to memory of 2144	2696	RegSvcs.exe	32
PID 2696 wrote to memory of 2144	2696	RegSvcs.exe	32
PID 2696 wrote to memory of 2144	2696	RegSvcs.exe	32
PID 2696 wrote to memory of 2144	2696	RegSvcs.exe	32
PID 2144 wrote to memory of 332	2144	cmd.exe	34
PID 2144 wrote to memory of 332	2144	cmd.exe	34
PID 2144 wrote to memory of 332	2144	cmd.exe	34
PID 2144 wrote to memory of 332	2144	cmd.exe	34
PID 2144 wrote to memory of 320	2144	cmd.exe	35
PID 2144 wrote to memory of 320	2144	cmd.exe	35
PID 2144 wrote to memory of 320	2144	cmd.exe	35
PID 2144 wrote to memory of 320	2144	cmd.exe	35
PID 2144 wrote to memory of 700	2144	cmd.exe	36
PID 2144 wrote to memory of 700	2144	cmd.exe	36
PID 2144 wrote to memory of 700	2144	cmd.exe	36
PID 2144 wrote to memory of 700	2144	cmd.exe	36
PID 2696 wrote to memory of 548	2696	RegSvcs.exe	37
PID 2696 wrote to memory of 548	2696	RegSvcs.exe	37
PID 2696 wrote to memory of 548	2696	RegSvcs.exe	37
PID 2696 wrote to memory of 548	2696	RegSvcs.exe	37
PID 548 wrote to memory of 2336	548	cmd.exe	39
PID 548 wrote to memory of 2336	548	cmd.exe	39
PID 548 wrote to memory of 2336	548	cmd.exe	39
PID 548 wrote to memory of 2336	548	cmd.exe	39
PID 548 wrote to memory of 2460	548	cmd.exe	40
PID 548 wrote to memory of 2460	548	cmd.exe	40
PID 548 wrote to memory of 2460	548	cmd.exe	40
PID 548 wrote to memory of 2460	548	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
C:\Users\Admin\AppData\Local\Temp\850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe cmd /c %SIGILL% "SIGTERM|DELETE|SIGKILL"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  C:\Users\Admin\AppData\Local\Temp\850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe cmd /c %SIGILL% "SIGTERM|DELETE|SIGKILL"
  2⤵
  - 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:2696
- - 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:2144
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:332
  - - 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:320
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      System Location Discovery: System Language Discovery
      PID:700
- - 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:548
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2336
  - - 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:2460

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

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\04eb764f9d8ececee718c140a475242e\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\d07d8c794729ba403f10dda7a29708c9\Admin@BCXRJFKE_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
memory/2696-18-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/2696-16-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/2696-9-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/2696-17-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

Filesize
4KB

Download
memory/2696-13-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/2696-51-0x0000000073D1E000-0x0000000073D1F000-memory.dmp

Filesize
4KB

Download
memory/2696-88-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/2696-90-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/2696-94-0x0000000073D10000-0x00000000743FE000-memory.dmp

Filesize
6.9MB

Download
memory/2696-7-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/3048-6-0x0000000000C40000-0x0000000001040000-memory.dmp

Filesize
4.0MB

Download