asyncrat | 850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e

Resubmissions

13/01/2025, 01:16

250113-bm2ezaylcs10

11/01/2025, 04:10

250111-erjmhasrez10

Analysis

max time kernel
894s
max time network
429s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/01/2025, 01:16

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General

Target
850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
Size 1.1MB
Sample250113-bm2ezaylcs
SHA256 850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e
MD5 a7649256fce8b15959edd1004df7781b
SHA1 314294d940b110265283531e9e62b3dea6fb4506
SHA512 8b06a739f05a731d7edafe7bbc9b6a6e083dbb3d8d96fe1bba110147401caf8bd1b51268cf1db0ad15dbd92b584c3a3d6174dfdee47669b9f8b6510735c4cf5b
SSDEEP 24576:2qDEvCTbMWu7rQYlBQcBiT6rprG8a61V9rWmEbmJsR:2TvC/MTQYxsWR7a6H9rbESJ
MD5 SHA1 SHA512 SSDEEP

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 1 IoCs

resource	yara_rule
behavioral2/memory/4288-7-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	RegSvcs.exe
File opened for modification	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	RegSvcs.exe
File created	C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	RegSvcs.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
31	pastebin.com
32	pastebin.com

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
22	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 2376 set thread context of 4288	2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	82

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 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	RegSvcs.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
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
2184	cmd.exe
516	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe
4288	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4288	RegSvcs.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe
2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 4288	2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	82
PID 2376 wrote to memory of 4288	2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	82
PID 2376 wrote to memory of 4288	2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	82
PID 2376 wrote to memory of 4288	2376	850fa36792359354c8b5cf86ebb2d6923aa64dece7fc5d555d90d156eaa0409e.exe	82
PID 4288 wrote to memory of 2184	4288	RegSvcs.exe	88
PID 4288 wrote to memory of 2184	4288	RegSvcs.exe	88
PID 4288 wrote to memory of 2184	4288	RegSvcs.exe	88
PID 2184 wrote to memory of 4640	2184	cmd.exe	90
PID 2184 wrote to memory of 4640	2184	cmd.exe	90
PID 2184 wrote to memory of 4640	2184	cmd.exe	90
PID 2184 wrote to memory of 516	2184	cmd.exe	91
PID 2184 wrote to memory of 516	2184	cmd.exe	91
PID 2184 wrote to memory of 516	2184	cmd.exe	91
PID 2184 wrote to memory of 3464	2184	cmd.exe	92
PID 2184 wrote to memory of 3464	2184	cmd.exe	92
PID 2184 wrote to memory of 3464	2184	cmd.exe	92
PID 4288 wrote to memory of 3884	4288	RegSvcs.exe	93
PID 4288 wrote to memory of 3884	4288	RegSvcs.exe	93
PID 4288 wrote to memory of 3884	4288	RegSvcs.exe	93
PID 3884 wrote to memory of 3740	3884	cmd.exe	95
PID 3884 wrote to memory of 3740	3884	cmd.exe	95
PID 3884 wrote to memory of 3740	3884	cmd.exe	95
PID 3884 wrote to memory of 3244	3884	cmd.exe	96
PID 3884 wrote to memory of 3244	3884	cmd.exe	96
PID 3884 wrote to memory of 3244	3884	cmd.exe	96

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:2376
- 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:4288
- - 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:2184
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:4640
  - - 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:516
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      System Location Discovery: System Language Discovery
      PID:3464
- - 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:3884
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:3740
  - - 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:3244

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bookmarks.txt

Path C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

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Process.txt

Path C:\Users\Admin\AppData\Local\5974d18bed04d14f6a31442d0838ba46\Admin@OZMCVSQS_en-US\System\Process.txt
Size 4KB
SHA256 aed58d3706c8403b3c5f66f3536068987be7d3aa98d2a32719a037bc5d9237df
MD5 b0e882e0d96207201bbf6be369d76307
SHA1 7e615f0d26dbf7616d1245063b1e30afd2969bec
SHA512 502bc383cb9f7237a5fdcd21df5a327cea686b89b0ec043770a05a1c46d65eee7d95c11e110f12538e1cd1d3fb6b8101e96b904c8240a66ad28651e50c665b33
SSDEEP 48:VxNbcyrlnb1upCxt6XdT239y2TFMp/erbFbE8:VfwyrlnBiCz6XdT239y2TqwrbFA8
MD5 SHA1 SHA512 SSDEEP

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msgid.dat

Path C:\Users\Admin\AppData\Local\cdc83c36b0196740d46797f99bb865be\msgid.dat
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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memory/2376-6-0x0000000001390000-0x0000000001790000-memory.dmp

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memory/4288-154-0x0000000073D90000-0x0000000074540000-memory.dmp

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memory/4288-10-0x00000000059B0000-0x0000000005A16000-memory.dmp

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memory/4288-131-0x0000000073D9E000-0x0000000073D9F000-memory.dmp

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memory/4288-9-0x0000000073D90000-0x0000000074540000-memory.dmp

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memory/4288-8-0x0000000073D9E000-0x0000000073D9F000-memory.dmp

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memory/4288-155-0x0000000073D90000-0x0000000074540000-memory.dmp

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memory/4288-157-0x0000000006300000-0x0000000006392000-memory.dmp

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memory/4288-158-0x0000000006A90000-0x0000000007034000-memory.dmp

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memory/4288-162-0x0000000006520000-0x000000000652A000-memory.dmp

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memory/4288-7-0x0000000000400000-0x0000000000432000-memory.dmp

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memory/4288-168-0x0000000006780000-0x0000000006792000-memory.dmp

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memory/4288-191-0x0000000073D90000-0x0000000074540000-memory.dmp

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