asyncrat | 6da2792e0500e75c0ce3b07c8cbfbc77d6b9e07260e5d28ca1a48d61df14c380

Reason

Machine shutdown

General

Target

CrashSmash.exe
Size

264KB
MD5

7c64ffb6d4b7fed10d9bc6c136ddcec4
SHA1

47b489693fe17be57f35abf272497f0d6abc1ca2
SHA256

6da2792e0500e75c0ce3b07c8cbfbc77d6b9e07260e5d28ca1a48d61df14c380
SHA512

5f48d0b4375e583582196b09cd8cb6c600b35e1df1607a4757aa91656312400dbe6a6fa1a71e4a525ae6830271c949746d27b6465bb9cb8ae8aaf8698d1ea261
SSDEEP

6144:qXtb5KcXr7XmfgqtjhAxZ0b2lDG/PHhiZC:EKcXrCf/QlZ

Score

10^/10

asyncrat stormkitty default discovery persistence privilege_escalation 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/bot6986026812:AAGMUhHJ6YNAvj-9EfaA1qFoj4rdW5DHGwo/sendMessage?chat_id=5912565656

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
behavioral1/memory/1772-1-0x0000000001270000-0x00000000012B8000-memory.dmp	family_stormkitty

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	CrashSmash.exe
File created	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	CrashSmash.exe
File opened for modification	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	CrashSmash.exe
File created	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	CrashSmash.exe
File opened for modification	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	CrashSmash.exe
File created	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	CrashSmash.exe
File opened for modification	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	CrashSmash.exe
File created	C:\Users\Admin\AppData\Local\a7615295f436fd9e21c71de031fbbb8f\Admin@UPNECVIU_de-DE\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	CrashSmash.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CrashSmash.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
1972	cmd.exe
2876	netsh.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1772	CrashSmash.exe
1772	CrashSmash.exe
1772	CrashSmash.exe
1772	CrashSmash.exe
1772	CrashSmash.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	CrashSmash.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 1972	1772	CrashSmash.exe	32
PID 1772 wrote to memory of 1972	1772	CrashSmash.exe	32
PID 1772 wrote to memory of 1972	1772	CrashSmash.exe	32
PID 1772 wrote to memory of 1972	1772	CrashSmash.exe	32
PID 1972 wrote to memory of 2884	1972	cmd.exe	34
PID 1972 wrote to memory of 2884	1972	cmd.exe	34
PID 1972 wrote to memory of 2884	1972	cmd.exe	34
PID 1972 wrote to memory of 2884	1972	cmd.exe	34
PID 1972 wrote to memory of 2876	1972	cmd.exe	35
PID 1972 wrote to memory of 2876	1972	cmd.exe	35
PID 1972 wrote to memory of 2876	1972	cmd.exe	35
PID 1972 wrote to memory of 2876	1972	cmd.exe	35
PID 1972 wrote to memory of 2596	1972	cmd.exe	36
PID 1972 wrote to memory of 2596	1972	cmd.exe	36
PID 1972 wrote to memory of 2596	1972	cmd.exe	36
PID 1972 wrote to memory of 2596	1972	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\CrashSmash.exe
"C:\Users\Admin\AppData\Local\Temp\CrashSmash.exe"
1⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2884
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:2876
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2596
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  PID:2972

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2920

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

1

T1217

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1772-0-0x000000007449E000-0x000000007449F000-memory.dmp

Filesize
4KB

Download
memory/1772-1-0x0000000001270000-0x00000000012B8000-memory.dmp

Filesize
288KB

Download
memory/1772-2-0x0000000074490000-0x0000000074B7E000-memory.dmp

Filesize
6.9MB

Download
memory/1772-73-0x0000000074490000-0x0000000074B7E000-memory.dmp

Filesize
6.9MB

Download
memory/1772-75-0x0000000074490000-0x0000000074B7E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads