asyncrat | 245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d

Analysis

max time kernel
144s
max time network
93s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25/09/2022, 13:43

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General

Target

245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
Size

170KB
MD5

7c3f3c658c7c5a91eb8b3b076a2d64d6
SHA1

a219e2540a74c986e037e87570fa1e7221c88bda
SHA256

245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d
SHA512

aa218c900faed69bd2ae53c6af8fff2faed2a0f89de3664bb31604b697bde64a5ed2c1e09aa006aa71adcd3ae09959dc61b9f6735fb22baaba289bf8a6dcb5a0
SSDEEP

3072:++STW8djpN6izj8mZwmHWknRPdxqIPu/i9boJ2cQsk6+Wp7:j8XN6W8mmmL/XPSi9bEC

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/bot5345460701:AAELDlYM_8yHwfKYHoYl_27JYXLpT-SLsyY/sendMessage?chat_id=689992339

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/832-54-0x0000000000090000-0x00000000000C0000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/832-54-0x0000000000090000-0x00000000000C0000-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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File opened for modification	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File created	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File opened for modification	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File created	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File created	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
File opened for modification	C:\Users\Admin\AppData\Local\a34022d2197f87bd830d6c2b49e33975\Admin@ZERMMMDR_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.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.

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	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 832 wrote to memory of 1276	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	28
PID 832 wrote to memory of 1276	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	28
PID 832 wrote to memory of 1276	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	28
PID 832 wrote to memory of 1276	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	28
PID 1276 wrote to memory of 1404	1276	cmd.exe	30
PID 1276 wrote to memory of 1404	1276	cmd.exe	30
PID 1276 wrote to memory of 1404	1276	cmd.exe	30
PID 1276 wrote to memory of 1404	1276	cmd.exe	30
PID 1276 wrote to memory of 604	1276	cmd.exe	31
PID 1276 wrote to memory of 604	1276	cmd.exe	31
PID 1276 wrote to memory of 604	1276	cmd.exe	31
PID 1276 wrote to memory of 604	1276	cmd.exe	31
PID 1276 wrote to memory of 816	1276	cmd.exe	32
PID 1276 wrote to memory of 816	1276	cmd.exe	32
PID 1276 wrote to memory of 816	1276	cmd.exe	32
PID 1276 wrote to memory of 816	1276	cmd.exe	32
PID 832 wrote to memory of 1912	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	33
PID 832 wrote to memory of 1912	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	33
PID 832 wrote to memory of 1912	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	33
PID 832 wrote to memory of 1912	832	245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe	33
PID 1912 wrote to memory of 1920	1912	cmd.exe	35
PID 1912 wrote to memory of 1920	1912	cmd.exe	35
PID 1912 wrote to memory of 1920	1912	cmd.exe	35
PID 1912 wrote to memory of 1920	1912	cmd.exe	35
PID 1912 wrote to memory of 1956	1912	cmd.exe	36
PID 1912 wrote to memory of 1956	1912	cmd.exe	36
PID 1912 wrote to memory of 1956	1912	cmd.exe	36
PID 1912 wrote to memory of 1956	1912	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe
"C:\Users\Admin\AppData\Local\Temp\245a975c226ec82bcc974723b9fe4ace5521725501ec5c9c76110dbb1017077d.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:832
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1276
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1404
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:604
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:816
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1912
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1920
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:1956

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

Replay Monitor

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Downloads

memory/832-54-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/832-55-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/832-59-0x0000000004B15000-0x0000000004B26000-memory.dmp

Filesize
68KB

Download