asyncrat | ea520d8e6ca1d44593f26ceea349d55709ebd61565f67368947d38e484f5846f

Analysis

max time kernel
149s
max time network
118s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
01/08/2024, 08:17

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General

Target

0x0009000000018b00-301.exe
Size

175KB
MD5

720b2d599314eaf90cd60038f7e7d2e8
SHA1

76592e0a64b599fbb49d006faa2de4211dd79834
SHA256

ea520d8e6ca1d44593f26ceea349d55709ebd61565f67368947d38e484f5846f
SHA512

eb5a2bc7cd470697cc3613edd51d3af9c4d64f05a71297a6b00c5137956bf269a62253fd60e7b994a750e3cc9eb44dae4275d10dd1356b4ea6140b16b2ab74e2
SSDEEP

3072:Ie8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gThwARE+WpCc:c6ewwIwQJ6vKX0c5MlYZ0b2+

Score

10^/10

asyncrat stormkitty default credential_access discovery persistence privilege_escalation 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/bot6082381502:AAGYF_HaZVw7ziBPxYHyd8WNo0uQbAM7fiU/sendMessage?chat_id=5795480469

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/1432-1-0x0000000001110000-0x0000000001142000-memory.dmp	family_stormkitty

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
T1552.001

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	0x0009000000018b00-301.exe
File created	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	0x0009000000018b00-301.exe
File opened for modification	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	0x0009000000018b00-301.exe
File created	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	0x0009000000018b00-301.exe
File opened for modification	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	0x0009000000018b00-301.exe
File created	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	0x0009000000018b00-301.exe
File opened for modification	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	0x0009000000018b00-301.exe
File created	C:\Users\Admin\AppData\Local\a3158b5f769282fe1d98a2610595fa3e\Admin@EXCFTDUU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	0x0009000000018b00-301.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.
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 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
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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0x0009000000018b00-301.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.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
2560	cmd.exe
2196	netsh.exe

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	0x0009000000018b00-301.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	0x0009000000018b00-301.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1432	0x0009000000018b00-301.exe
1432	0x0009000000018b00-301.exe
1432	0x0009000000018b00-301.exe
1432	0x0009000000018b00-301.exe
1432	0x0009000000018b00-301.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1432	0x0009000000018b00-301.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1432 wrote to memory of 2560	1432	0x0009000000018b00-301.exe	31
PID 1432 wrote to memory of 2560	1432	0x0009000000018b00-301.exe	31
PID 1432 wrote to memory of 2560	1432	0x0009000000018b00-301.exe	31
PID 1432 wrote to memory of 2560	1432	0x0009000000018b00-301.exe	31
PID 2560 wrote to memory of 2080	2560	cmd.exe	33
PID 2560 wrote to memory of 2080	2560	cmd.exe	33
PID 2560 wrote to memory of 2080	2560	cmd.exe	33
PID 2560 wrote to memory of 2080	2560	cmd.exe	33
PID 2560 wrote to memory of 2196	2560	cmd.exe	34
PID 2560 wrote to memory of 2196	2560	cmd.exe	34
PID 2560 wrote to memory of 2196	2560	cmd.exe	34
PID 2560 wrote to memory of 2196	2560	cmd.exe	34
PID 2560 wrote to memory of 1096	2560	cmd.exe	35
PID 2560 wrote to memory of 1096	2560	cmd.exe	35
PID 2560 wrote to memory of 1096	2560	cmd.exe	35
PID 2560 wrote to memory of 1096	2560	cmd.exe	35
PID 1432 wrote to memory of 1644	1432	0x0009000000018b00-301.exe	36
PID 1432 wrote to memory of 1644	1432	0x0009000000018b00-301.exe	36
PID 1432 wrote to memory of 1644	1432	0x0009000000018b00-301.exe	36
PID 1432 wrote to memory of 1644	1432	0x0009000000018b00-301.exe	36
PID 1644 wrote to memory of 2168	1644	cmd.exe	38
PID 1644 wrote to memory of 2168	1644	cmd.exe	38
PID 1644 wrote to memory of 2168	1644	cmd.exe	38
PID 1644 wrote to memory of 2168	1644	cmd.exe	38
PID 1644 wrote to memory of 1256	1644	cmd.exe	39
PID 1644 wrote to memory of 1256	1644	cmd.exe	39
PID 1644 wrote to memory of 1256	1644	cmd.exe	39
PID 1644 wrote to memory of 1256	1644	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\0x0009000000018b00-301.exe
"C:\Users\Admin\AppData\Local\Temp\0x0009000000018b00-301.exe"
1⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1432
- 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:2560
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2080
- - 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:2196
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1096
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2168
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\a2140346e6d6c315f70576ff16472aa8\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1432-0-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

Filesize
4KB

Download
memory/1432-1-0x0000000001110000-0x0000000001142000-memory.dmp

Filesize
200KB

Download
memory/1432-2-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1432-72-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1432-81-0x0000000074A4E000-0x0000000074A4F000-memory.dmp

Filesize
4KB

Download
memory/1432-82-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1432-83-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download