asyncrat | 99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733

Resubmissions

13-01-2025 01:02

250113-bd1gbazrhm 10

09-01-2025 19:54

250109-ymle3s1ngr 10

Analysis

max time kernel
55s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 19:54

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General

Target

99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
Size

170KB
MD5

efbe77e5aaf51ee1be7a02d2d55f6171
SHA1

5e88c3031a53715b82a66165d192551226c3de7f
SHA256

99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733
SHA512

8ba2f5c72e40249f73dc092054b118c9d3faf98978a5aac06662869ef4ed5f2b974759cf1bee2155d40e15bc647e2499c621a0915f6a79b07c640bff76e2d2db
SSDEEP

3072:O+STW8djpN6izj8mZwkYXvYUCEqIPu/i9bsJ2cjJI6+WpL:z8XN6W8mmBn5XPSi9boD

Score

10^/10

asyncrat stormkitty default discovery persistence 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/bot7948363538:AAGPxAvOVmzz8x-5s0mHYlUprnmFgCHGEyo/sendMessage?chat_id=2115574643

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
behavioral1/memory/2236-1-0x0000000000A90000-0x0000000000AC0000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
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\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File created	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File opened for modification	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File created	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File opened for modification	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File created	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File opened for modification	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
File created	C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.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.
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	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	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.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

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
604	cmd.exe
2900	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	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 604	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	31
PID 2236 wrote to memory of 604	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	31
PID 2236 wrote to memory of 604	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	31
PID 2236 wrote to memory of 604	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	31
PID 604 wrote to memory of 2696	604	cmd.exe	33
PID 604 wrote to memory of 2696	604	cmd.exe	33
PID 604 wrote to memory of 2696	604	cmd.exe	33
PID 604 wrote to memory of 2696	604	cmd.exe	33
PID 604 wrote to memory of 2900	604	cmd.exe	34
PID 604 wrote to memory of 2900	604	cmd.exe	34
PID 604 wrote to memory of 2900	604	cmd.exe	34
PID 604 wrote to memory of 2900	604	cmd.exe	34
PID 604 wrote to memory of 2952	604	cmd.exe	35
PID 604 wrote to memory of 2952	604	cmd.exe	35
PID 604 wrote to memory of 2952	604	cmd.exe	35
PID 604 wrote to memory of 2952	604	cmd.exe	35
PID 2236 wrote to memory of 1816	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	36
PID 2236 wrote to memory of 1816	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	36
PID 2236 wrote to memory of 1816	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	36
PID 2236 wrote to memory of 1816	2236	99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe	36
PID 1816 wrote to memory of 532	1816	cmd.exe	38
PID 1816 wrote to memory of 532	1816	cmd.exe	38
PID 1816 wrote to memory of 532	1816	cmd.exe	38
PID 1816 wrote to memory of 532	1816	cmd.exe	38
PID 1816 wrote to memory of 2664	1816	cmd.exe	39
PID 1816 wrote to memory of 2664	1816	cmd.exe	39
PID 1816 wrote to memory of 2664	1816	cmd.exe	39
PID 1816 wrote to memory of 2664	1816	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.exe
"C:\Users\Admin\AppData\Local\Temp\99d2c277b2dd65cd1dd8c954501043a2ec5891d339b7b8ddfad373841d9a9733.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:2236
- 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:604
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2696
- - 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:2900
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2952
- 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:1816
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:532
- - 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:2664

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\c4744f770773a09aafa61829d5bafc82\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2236-0-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2236-1-0x0000000000A90000-0x0000000000AC0000-memory.dmp

Filesize
192KB

Download
memory/2236-2-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2236-72-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2236-76-0x000000007434E000-0x000000007434F000-memory.dmp

Filesize
4KB

Download
memory/2236-77-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download
memory/2236-78-0x0000000074340000-0x0000000074A2E000-memory.dmp

Filesize
6.9MB

Download