asyncrat | b847943032293a9744a4831e1fdeabc4485d71cf44097a1c82c21b4e8fb47e62

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/06/2024, 20:18

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General

Target

Socialclub/rockstar checker.exe
Size

170KB
MD5

1228851106e9f2178b56e9985014e243
SHA1

5e3a4575bdaf68735c86c97a2df65624dfc999fb
SHA256

e49259a6849bb633e25fae724da3ccfadfa710a7b19f59db18a24b8207e9c319
SHA512

678d9982b410a535d3ea0c128ddafe2fd391759b0b6aa39ea101b9d1d66aad30089ea3c77ba63e81cf4b100d2ce14bb7aa85a1c74a97ca5aed478bcbc8495e69
SSDEEP

3072:++STW8djpN6izj8mZwdJqutB+YDpqIPu/i9bVK2cJak6+Wp7:j8XN6W8mmHPtppXPSi9b4na

Score

10^/10

asyncrat stormkitty default 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/bot5236702741:AAEYl0F5uVbja0ncy0sx9vJHGvygeGhNV9M/sendMessage?chat_id=775796924

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral9/memory/1632-1-0x0000000001070000-0x00000000010A0000-memory.dmp	family_stormkitty

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

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	rockstar checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	rockstar checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	rockstar checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\d4578ee47ee76e337547c667d2e9866d\Admin@IZKCKOTP_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	rockstar 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
4	icanhazip.com

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

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

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	rockstar checker.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	rockstar checker.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1632	rockstar checker.exe
1632	rockstar checker.exe
1632	rockstar checker.exe
1632	rockstar checker.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	rockstar checker.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 2760	1632	rockstar checker.exe	29
PID 1632 wrote to memory of 2760	1632	rockstar checker.exe	29
PID 1632 wrote to memory of 2760	1632	rockstar checker.exe	29
PID 1632 wrote to memory of 2760	1632	rockstar checker.exe	29
PID 2760 wrote to memory of 2876	2760	cmd.exe	31
PID 2760 wrote to memory of 2876	2760	cmd.exe	31
PID 2760 wrote to memory of 2876	2760	cmd.exe	31
PID 2760 wrote to memory of 2876	2760	cmd.exe	31
PID 2760 wrote to memory of 920	2760	cmd.exe	32
PID 2760 wrote to memory of 920	2760	cmd.exe	32
PID 2760 wrote to memory of 920	2760	cmd.exe	32
PID 2760 wrote to memory of 920	2760	cmd.exe	32
PID 2760 wrote to memory of 1724	2760	cmd.exe	33
PID 2760 wrote to memory of 1724	2760	cmd.exe	33
PID 2760 wrote to memory of 1724	2760	cmd.exe	33
PID 2760 wrote to memory of 1724	2760	cmd.exe	33
PID 1632 wrote to memory of 1240	1632	rockstar checker.exe	34
PID 1632 wrote to memory of 1240	1632	rockstar checker.exe	34
PID 1632 wrote to memory of 1240	1632	rockstar checker.exe	34
PID 1632 wrote to memory of 1240	1632	rockstar checker.exe	34
PID 1240 wrote to memory of 1400	1240	cmd.exe	36
PID 1240 wrote to memory of 1400	1240	cmd.exe	36
PID 1240 wrote to memory of 1400	1240	cmd.exe	36
PID 1240 wrote to memory of 1400	1240	cmd.exe	36
PID 1240 wrote to memory of 840	1240	cmd.exe	37
PID 1240 wrote to memory of 840	1240	cmd.exe	37
PID 1240 wrote to memory of 840	1240	cmd.exe	37
PID 1240 wrote to memory of 840	1240	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\Socialclub\rockstar checker.exe
"C:\Users\Admin\AppData\Local\Temp\Socialclub\rockstar checker.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2876
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:920
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1240
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1400
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    PID:840

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

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\c5a0d0add7b4716d0e5b04fadd594178\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1632-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/1632-1-0x0000000001070000-0x00000000010A0000-memory.dmp

Filesize
192KB

Download
memory/1632-2-0x0000000074640000-0x0000000074D2E000-memory.dmp

Filesize
6.9MB

Download
memory/1632-69-0x0000000074640000-0x0000000074D2E000-memory.dmp

Filesize
6.9MB

Download