asyncrat | 7526ce309a80adea50423093cb6bba5c13ee1a3b9e6b4317e6c7f02569aa48cd

General

Target

View.exe
Size

170KB
MD5

f1a98f35102de03ade78f77b4d32672c
SHA1

7c10c2784119e89e71ef22900ded48cfaaef7401
SHA256

7526ce309a80adea50423093cb6bba5c13ee1a3b9e6b4317e6c7f02569aa48cd
SHA512

9a51ddc114286946d823ac36af7b4f56307123d152854e1410d263bae3f7c7b520286b193901710f6be5bc9380e2d1ad79dea2060a8211d5dc006392fb6bc667

Score

10^/10

asyncrat stormkitty rat spyware stealer

Malware Config

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/892-54-0x0000000000340000-0x0000000000370000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/892-54-0x0000000000340000-0x0000000000370000-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) 8 IoCs

Processes:

View.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	View.exe
File created	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	View.exe
File opened for modification	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	View.exe
File created	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	View.exe
File opened for modification	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	View.exe
File created	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	View.exe
File opened for modification	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	View.exe
File created	C:\Users\Admin\AppData\Local\f6bcd25d36b261aef847bd4f4fe24c39\Admin@DRLQIXCW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	View.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

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

flow	ioc
4	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:

View.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

View.exe

pid process

892 View.exe
892 View.exe
892 View.exe
892 View.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

View.exe

description pid process

Token: SeDebugPrivilege 892 View.exe

pid	process
892	View.exe
892	View.exe
892	View.exe
892	View.exe

description	pid	process
Token: SeDebugPrivilege	892	View.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

View.execmd.execmd.exe

description	pid	process	target process
PID 892 wrote to memory of 1580	892	View.exe	cmd.exe
PID 892 wrote to memory of 1580	892	View.exe	cmd.exe
PID 892 wrote to memory of 1580	892	View.exe	cmd.exe
PID 892 wrote to memory of 1580	892	View.exe	cmd.exe
PID 1580 wrote to memory of 1708	1580	cmd.exe	chcp.com
PID 1580 wrote to memory of 1708	1580	cmd.exe	chcp.com
PID 1580 wrote to memory of 1708	1580	cmd.exe	chcp.com
PID 1580 wrote to memory of 1708	1580	cmd.exe	chcp.com
PID 1580 wrote to memory of 1224	1580	cmd.exe	netsh.exe
PID 1580 wrote to memory of 1224	1580	cmd.exe	netsh.exe
PID 1580 wrote to memory of 1224	1580	cmd.exe	netsh.exe
PID 1580 wrote to memory of 1224	1580	cmd.exe	netsh.exe
PID 1580 wrote to memory of 1436	1580	cmd.exe	findstr.exe
PID 1580 wrote to memory of 1436	1580	cmd.exe	findstr.exe
PID 1580 wrote to memory of 1436	1580	cmd.exe	findstr.exe
PID 1580 wrote to memory of 1436	1580	cmd.exe	findstr.exe
PID 892 wrote to memory of 1448	892	View.exe	cmd.exe
PID 892 wrote to memory of 1448	892	View.exe	cmd.exe
PID 892 wrote to memory of 1448	892	View.exe	cmd.exe
PID 892 wrote to memory of 1448	892	View.exe	cmd.exe
PID 1448 wrote to memory of 1492	1448	cmd.exe	chcp.com
PID 1448 wrote to memory of 1492	1448	cmd.exe	chcp.com
PID 1448 wrote to memory of 1492	1448	cmd.exe	chcp.com
PID 1448 wrote to memory of 1492	1448	cmd.exe	chcp.com
PID 1448 wrote to memory of 764	1448	cmd.exe	netsh.exe
PID 1448 wrote to memory of 764	1448	cmd.exe	netsh.exe
PID 1448 wrote to memory of 764	1448	cmd.exe	netsh.exe
PID 1448 wrote to memory of 764	1448	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\View.exe
"C:\Users\Admin\AppData\Local\Temp\View.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1708
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:1224
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:1436
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1492
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:764

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/764-63-0x0000000000000000-mapping.dmp

Download
memory/892-54-0x0000000000340000-0x0000000000370000-memory.dmp

Filesize
192KB

Download
memory/892-55-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/892-65-0x0000000004C35000-0x0000000004C46000-memory.dmp

Filesize
68KB

Download
memory/1224-58-0x0000000000000000-mapping.dmp

Download
memory/1436-59-0x0000000000000000-mapping.dmp

Download
memory/1448-61-0x0000000000000000-mapping.dmp

Download
memory/1492-62-0x0000000000000000-mapping.dmp

Download
memory/1580-56-0x0000000000000000-mapping.dmp

Download
memory/1708-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads