asyncrat | d2274cca6f30f46595535f1b67f2f4e493eb97ec1a11258bd73ed6bd702d025d

General

Target

file.exe
Size

170KB
MD5

d59d7514d7df3d20f969fa6b5517eb01
SHA1

bdc5bee56769d229403a4c116875e65db2fd3e8c
SHA256

d2274cca6f30f46595535f1b67f2f4e493eb97ec1a11258bd73ed6bd702d025d
SHA512

a5f21cb4f51f99f67de4b8bf82add5a9aa123f025837a0a07cf587b3f8f5e1a6a5c9a7e04c863ef77a3c22c350c61b97ec87e3e15e22aca78ce1cfb447f636d9
SSDEEP

3072:++STW8djpN6izj8mZwdJqutB+YDpqIPu/i9bVK2cPVI6+Wp7:j8XN6W8mmHPtppXPSi9b4

Score

10^/10

asyncrat stormkitty default rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot5360303860:AAH_YAk63cASK9FV95ft07Rf6tjatzAINIE/sendMessage?chat_id=5676635446

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

Processes:

resource	yara_rule
behavioral1/memory/1724-54-0x0000000000DB0000-0x0000000000DE0000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1724-54-0x0000000000DB0000-0x0000000000DE0000-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

Processes:

file.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	file.exe
File opened for modification	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	file.exe
File created	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	file.exe
File opened for modification	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	file.exe
File created	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	file.exe
File opened for modification	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	file.exe
File created	C:\Users\Admin\AppData\Local\a843607351088208b30dc7f40dc340f1\Admin@RYNKSFQE_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	file.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.

Processes:

flow ioc

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

flow	ioc
3	icanhazip.com

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

Processes:

file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	file.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

file.exe

pid process

1724 file.exe
1724 file.exe
1724 file.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

file.exe

description pid process

Token: SeDebugPrivilege 1724 file.exe

pid	process
1724	file.exe
1724	file.exe
1724	file.exe

description	pid	process
Token: SeDebugPrivilege	1724	file.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

file.execmd.execmd.exe

description	pid	process	target process
PID 1724 wrote to memory of 856	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 856	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 856	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 856	1724	file.exe	cmd.exe
PID 856 wrote to memory of 552	856	cmd.exe	chcp.com
PID 856 wrote to memory of 552	856	cmd.exe	chcp.com
PID 856 wrote to memory of 552	856	cmd.exe	chcp.com
PID 856 wrote to memory of 552	856	cmd.exe	chcp.com
PID 856 wrote to memory of 1028	856	cmd.exe	netsh.exe
PID 856 wrote to memory of 1028	856	cmd.exe	netsh.exe
PID 856 wrote to memory of 1028	856	cmd.exe	netsh.exe
PID 856 wrote to memory of 1028	856	cmd.exe	netsh.exe
PID 856 wrote to memory of 2012	856	cmd.exe	findstr.exe
PID 856 wrote to memory of 2012	856	cmd.exe	findstr.exe
PID 856 wrote to memory of 2012	856	cmd.exe	findstr.exe
PID 856 wrote to memory of 2012	856	cmd.exe	findstr.exe
PID 1724 wrote to memory of 1928	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 1928	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 1928	1724	file.exe	cmd.exe
PID 1724 wrote to memory of 1928	1724	file.exe	cmd.exe
PID 1928 wrote to memory of 1992	1928	cmd.exe	chcp.com
PID 1928 wrote to memory of 1992	1928	cmd.exe	chcp.com
PID 1928 wrote to memory of 1992	1928	cmd.exe	chcp.com
PID 1928 wrote to memory of 1992	1928	cmd.exe	chcp.com
PID 1928 wrote to memory of 1784	1928	cmd.exe	netsh.exe
PID 1928 wrote to memory of 1784	1928	cmd.exe	netsh.exe
PID 1928 wrote to memory of 1784	1928	cmd.exe	netsh.exe
PID 1928 wrote to memory of 1784	1928	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:856

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:552

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
3⤵
PID:1028

C:\Windows\SysWOW64\findstr.exe
findstr All
3⤵
PID:2012

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
2⤵
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\chcp.com
chcp 65001
3⤵
PID:1992

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
3⤵
PID:1784

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/552-58-0x0000000000000000-mapping.dmp

Download
memory/856-57-0x0000000000000000-mapping.dmp

Download
memory/1028-59-0x0000000000000000-mapping.dmp

Download
memory/1724-54-0x0000000000DB0000-0x0000000000DE0000-memory.dmp

Filesize
192KB

Download
memory/1724-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

Download
memory/1724-56-0x0000000004245000-0x0000000004256000-memory.dmp

Filesize
68KB

Download
memory/1724-66-0x0000000004245000-0x0000000004256000-memory.dmp

Filesize
68KB

Download
memory/1784-64-0x0000000000000000-mapping.dmp

Download
memory/1928-62-0x0000000000000000-mapping.dmp

Download
memory/1992-63-0x0000000000000000-mapping.dmp

Download
memory/2012-60-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads