asyncrat | e49259a6849bb633e25fae724da3ccfadfa710a7b19f59db18a24b8207e9c319

Analysis

max time kernel
146s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 12:44

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
rockstar checker.exe
Size 170KB
Sample240422-pyjk7abd74
SHA256 e49259a6849bb633e25fae724da3ccfadfa710a7b19f59db18a24b8207e9c319
MD5 1228851106e9f2178b56e9985014e243
SHA1 5e3a4575bdaf68735c86c97a2df65624dfc999fb
SHA512 678d9982b410a535d3ea0c128ddafe2fd391759b0b6aa39ea101b9d1d66aad30089ea3c77ba63e81cf4b100d2ce14bb7aa85a1c74a97ca5aed478bcbc8495e69
SSDEEP 3072:++STW8djpN6izj8mZwdJqutB+YDpqIPu/i9bVK2cJak6+Wp7:j8XN6W8mmHPtppXPSi9b4na
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat stormkitty default 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
behavioral2/memory/1408-0-0x00000000001D0000-0x0000000000200000-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 created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	rockstar checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	rockstar checker.exe
File opened for modification	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	rockstar checker.exe
File created	C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\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
40	icanhazip.com

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

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 25 IoCs

pid	Process
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe
1408	rockstar checker.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1408	rockstar checker.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 940	1408	rockstar checker.exe	95
PID 1408 wrote to memory of 940	1408	rockstar checker.exe	95
PID 1408 wrote to memory of 940	1408	rockstar checker.exe	95
PID 940 wrote to memory of 1256	940	cmd.exe	97
PID 940 wrote to memory of 1256	940	cmd.exe	97
PID 940 wrote to memory of 1256	940	cmd.exe	97
PID 940 wrote to memory of 3800	940	cmd.exe	98
PID 940 wrote to memory of 3800	940	cmd.exe	98
PID 940 wrote to memory of 3800	940	cmd.exe	98
PID 940 wrote to memory of 4948	940	cmd.exe	99
PID 940 wrote to memory of 4948	940	cmd.exe	99
PID 940 wrote to memory of 4948	940	cmd.exe	99
PID 1408 wrote to memory of 2700	1408	rockstar checker.exe	101
PID 1408 wrote to memory of 2700	1408	rockstar checker.exe	101
PID 1408 wrote to memory of 2700	1408	rockstar checker.exe	101
PID 2700 wrote to memory of 4704	2700	cmd.exe	103
PID 2700 wrote to memory of 4704	2700	cmd.exe	103
PID 2700 wrote to memory of 4704	2700	cmd.exe	103
PID 2700 wrote to memory of 212	2700	cmd.exe	104
PID 2700 wrote to memory of 212	2700	cmd.exe	104
PID 2700 wrote to memory of 212	2700	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\rockstar checker.exe
"C:\Users\Admin\AppData\Local\Temp\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:1408
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1256
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:3800
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:4948
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4704
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Loading Replay Monitor...

Downloads

Bookmarks.txt

Path C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

Submit Download

Process.txt

Path C:\Users\Admin\AppData\Local\8e8b39338da1916c52b7f40aaa9b9d28\Admin@JESBHZTW_en-US\System\Process.txt
Size 4KB
SHA256 57bf24b4d86e5353316e54f7ee77a94d2ba713aa7be14339d12d66c9d085d091
MD5 d14ffcabfabd2d512d97983a26cfcd89
SHA1 d02dca45b6df8777b98ed7a92e55547ba44eeeed
SHA512 e09f6741004ef3e5842c203fa2a83c6b3262b5b8df516abfebd7e0cbca7457087f0f3c477dfe8aa469270676b2d682a79a7b566afb030066847aaf5b47ee0e8e
SSDEEP 96:MUHkBHrG+raljZV23mENwxtlABatMdBIq8:MUQrNm3EixtCBatMDp8
MD5 SHA1 SHA512 SSDEEP

Submit Download

msgid.dat

Path C:\Users\Admin\AppData\Local\de73380e6b8b17d5c65a360cbd97ee57\msgid.dat
Size 6B
SHA256 f1706381c872f468a54aebc0cdea63a898d3ed5ba58a336b855655e84c53f6e9
MD5 15423a1d5823fc4fc4324db91cbd8b2a
SHA1 1f71426c883488513dfb91308bff0d95138ed94c
SHA512 91c0e0cd27b15ac2c3e65385e1c75577a9ef4e7516c14eeca4e10949f2158975381afe9b557036777b49ebdb126872d6b0fd32f438c2b8e913b192230ab173a4
MD5 SHA1 SHA512

Submit Download

memory/1408-152-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Download

memory/1408-3-0x0000000004B60000-0x0000000004BC6000-memory.dmp

Download

memory/1408-2-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Download

memory/1408-0-0x00000000001D0000-0x0000000000200000-memory.dmp

Download

memory/1408-154-0x00000000056F0000-0x0000000005782000-memory.dmp

Download

memory/1408-155-0x0000000005D40000-0x00000000062E4000-memory.dmp

Download

memory/1408-159-0x00000000057F0000-0x00000000057FA000-memory.dmp

Download

memory/1408-1-0x0000000075020000-0x00000000757D0000-memory.dmp

Download

memory/1408-165-0x0000000005880000-0x0000000005892000-memory.dmp

Download

memory/1408-190-0x0000000075020000-0x00000000757D0000-memory.dmp

Download

memory/1408-191-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Download

memory/1408-192-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Download