asyncrat | 7afcf780cb130e2d294e7eca704cb2914d50c738748da431ee275dacc3e5344e

Analysis

max time kernel
148s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
28/06/2023, 14:43

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General

Target
ecbd37c3d75e81c121cd89bff24dcfc4.exe
Size 170KB
Sample230628-r3kp6aaa49
SHA256 7afcf780cb130e2d294e7eca704cb2914d50c738748da431ee275dacc3e5344e
MD5 ecbd37c3d75e81c121cd89bff24dcfc4
SHA1 93091c7c56c6c183dd5936085e1b7b57fad5224e
SHA512 ca69ead605b2ebc5a7681ae5c6f46dfc5ca166370218e860567bc6a36911fd47ed24e13f0cf8207e71b56fe7dda2d3abc63a287e91e5ab36e37c75ce1be0156b
SSDEEP 3072:S+STW8djpN6izj8mZwP900qo2HD9avlCIPu/i9bSJ2crcgR6+WpP:P8XN6W8mmP9kHDYd/PSi9b6
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/bot6154715708:AAHVX9D43hLAOXSm2JG6HA3z4wqn-qeyK6Y/sendMessage?chat_id=1165040754

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/4360-133-0x0000000000D20000-0x0000000000D50000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/4360-133-0x0000000000D20000-0x0000000000D50000-memory.dmp	asyncrat

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
T1081

Drops desktop.ini file(s) 9 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File opened for modification	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File opened for modification	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File opened for modification	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.exe
File created	C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	ecbd37c3d75e81c121cd89bff24dcfc4.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
34	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	ecbd37c3d75e81c121cd89bff24dcfc4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	ecbd37c3d75e81c121cd89bff24dcfc4.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe
4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 2604	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	93
PID 4360 wrote to memory of 2604	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	93
PID 4360 wrote to memory of 2604	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	93
PID 2604 wrote to memory of 4016	2604	cmd.exe	95
PID 2604 wrote to memory of 4016	2604	cmd.exe	95
PID 2604 wrote to memory of 4016	2604	cmd.exe	95
PID 2604 wrote to memory of 3420	2604	cmd.exe	96
PID 2604 wrote to memory of 3420	2604	cmd.exe	96
PID 2604 wrote to memory of 3420	2604	cmd.exe	96
PID 2604 wrote to memory of 4268	2604	cmd.exe	97
PID 2604 wrote to memory of 4268	2604	cmd.exe	97
PID 2604 wrote to memory of 4268	2604	cmd.exe	97
PID 4360 wrote to memory of 2088	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	98
PID 4360 wrote to memory of 2088	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	98
PID 4360 wrote to memory of 2088	4360	ecbd37c3d75e81c121cd89bff24dcfc4.exe	98
PID 2088 wrote to memory of 1984	2088	cmd.exe	100
PID 2088 wrote to memory of 1984	2088	cmd.exe	100
PID 2088 wrote to memory of 1984	2088	cmd.exe	100
PID 2088 wrote to memory of 4536	2088	cmd.exe	101
PID 2088 wrote to memory of 4536	2088	cmd.exe	101
PID 2088 wrote to memory of 4536	2088	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\ecbd37c3d75e81c121cd89bff24dcfc4.exe
"C:\Users\Admin\AppData\Local\Temp\ecbd37c3d75e81c121cd89bff24dcfc4.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4016
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:3420
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:4268
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1984
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:4536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

Bookmarks.txt

Path C:\Users\Admin\AppData\Local\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_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\5025970a27e0ea3ec10d338a137dd432\Admin@GAJYPACP_en-US\System\Process.txt
Size 4KB
SHA256 c655b504357d44cb463672fa38048f73d70053725251811a1791dcceaafd9d9f
MD5 d865e7d7237d3903404b63336a18c398
SHA1 69aea3a635bd158e655b0c8e288fa5636673f547
SHA512 bf139f392a64f263f6f088a884031fe73a3ef0e49f7f74d3c949986af7fce52348e34f393dd30dc0aa497898e77eff9160a7175f0ee16a0d0fd713b1a8d3e775
SSDEEP 96:Gz9ESMaBtYIaBfwf1tyDMV7HlfQWIOYx235:Gz9ElotYIeYf1ty27HlfQWb3
MD5 SHA1 SHA512 SSDEEP

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msgid.dat

Path C:\Users\Admin\AppData\Local\76b06e7b1b7355a039a6ff4e0c88f0e4\msgid.dat
Size 4B
SHA256 c4e2e9a17e38d281b86a468fabd6b9eed6b88a0f229eef8aeb3aaa5b640b0cba
MD5 517da335fd0ec2f4a25ea139d5494163
SHA1 ec9c26d9dfa728748b977d94fcb93e0cbeddeeb2
SHA512 1d14c2fe451cfc51f7cefd6ef3d4f395b894695d60bbdb82c07216fc4fdb68bb28d12dc6f3560af5245019af55fd31bd545b98b0a7bd1f1a797c714abbb72e7a
MD5 SHA1 SHA512

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memory/4360-281-0x0000000006610000-0x00000000066A2000-memory.dmp

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memory/4360-194-0x00000000056C0000-0x00000000056D0000-memory.dmp

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memory/4360-135-0x00000000057D0000-0x0000000005836000-memory.dmp

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memory/4360-133-0x0000000000D20000-0x0000000000D50000-memory.dmp

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memory/4360-282-0x0000000006C60000-0x0000000007204000-memory.dmp

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memory/4360-284-0x00000000056C0000-0x00000000056D0000-memory.dmp

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memory/4360-287-0x0000000006730000-0x000000000673A000-memory.dmp

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memory/4360-134-0x00000000056C0000-0x00000000056D0000-memory.dmp

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memory/4360-293-0x0000000006780000-0x0000000006792000-memory.dmp

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memory/4360-317-0x00000000056C0000-0x00000000056D0000-memory.dmp

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