asyncrat | 58b1013f511e61f2ddfb547939895ec161ab8bc03f5413529f85f1a3272d38d4

General

Target

Client.exe
Size

170KB
MD5

e29ab30e42348ecf2831928b7b95d5d8
SHA1

70ae302ae078326efbe444fd8158d2b104a06a69
SHA256

58b1013f511e61f2ddfb547939895ec161ab8bc03f5413529f85f1a3272d38d4
SHA512

34a3209dc0856ea0e4d0573eca4dd53b238ebb317f10cb84683d99c64c1264693390d42193fcbac190ce9d9e0a33c9f32de8c4a57e4d38ec267ad16ad5d3138d
SSDEEP

3072:3+STW8djpN6izj8mZw0YaeiJFqIPu/i9bVJ2cxO06+Wpz:c8XN6W8mm0YmfXPSi9bDD

Score

10^/10

asyncrat stormkitty default credential_access 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/bot5344934242:AAF3rLeFDCGd-IVKJG_PU99MSQjdKyNgeR0/sendMessage?chat_id=1619136628

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

Processes:

resource	yara_rule
behavioral2/memory/1964-1-0x0000000000DB0000-0x0000000000DE0000-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

Processes:

Client.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Client.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

28 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

flow	ioc
28	icanhazip.com

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

Processes:

netsh.exenetsh.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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

Processes:

Client.execmd.exechcp.comfindstr.exenetsh.execmd.exechcp.comnetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.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
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

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

Processes:

cmd.exenetsh.exe

pid process

4368 cmd.exe
1616 netsh.exe

pid	process
4368	cmd.exe
1616	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

Processes:

Client.exe

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

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

Client.exe

pid	process
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe
1964	Client.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Client.exe

description pid process

Token: SeDebugPrivilege 1964 Client.exe

description	pid	process
Token: SeDebugPrivilege	1964	Client.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Client.execmd.execmd.exe

description	pid	process	target process
PID 1964 wrote to memory of 4368	1964	Client.exe	cmd.exe
PID 1964 wrote to memory of 4368	1964	Client.exe	cmd.exe
PID 1964 wrote to memory of 4368	1964	Client.exe	cmd.exe
PID 4368 wrote to memory of 4088	4368	cmd.exe	chcp.com
PID 4368 wrote to memory of 4088	4368	cmd.exe	chcp.com
PID 4368 wrote to memory of 4088	4368	cmd.exe	chcp.com
PID 4368 wrote to memory of 1616	4368	cmd.exe	netsh.exe
PID 4368 wrote to memory of 1616	4368	cmd.exe	netsh.exe
PID 4368 wrote to memory of 1616	4368	cmd.exe	netsh.exe
PID 4368 wrote to memory of 4100	4368	cmd.exe	findstr.exe
PID 4368 wrote to memory of 4100	4368	cmd.exe	findstr.exe
PID 4368 wrote to memory of 4100	4368	cmd.exe	findstr.exe
PID 1964 wrote to memory of 956	1964	Client.exe	cmd.exe
PID 1964 wrote to memory of 956	1964	Client.exe	cmd.exe
PID 1964 wrote to memory of 956	1964	Client.exe	cmd.exe
PID 956 wrote to memory of 3164	956	cmd.exe	chcp.com
PID 956 wrote to memory of 3164	956	cmd.exe	chcp.com
PID 956 wrote to memory of 3164	956	cmd.exe	chcp.com
PID 956 wrote to memory of 3944	956	cmd.exe	netsh.exe
PID 956 wrote to memory of 3944	956	cmd.exe	netsh.exe
PID 956 wrote to memory of 3944	956	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.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:1964
- 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:4368
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4088
- - 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:1616
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4100
- 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:956
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3164
- - 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:3944

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

Query Registry

System Information Discovery

1

T1082

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

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Downloads

C:\Users\Admin\AppData\Local\7118e685d4aa6b91f43797eecc33b54b\msgid.dat

Filesize
5B

MD5
892ad0ba6f0c38c4dc95279c02dddd37

SHA1
a1e2eb94e51b7d8be2223919e6d1279cbf140570

SHA256
5f2aa48337aa621b94c13c4f3b9996af6bd15e659abce397763543cb4bf58c8c

SHA512
581ce3a3d6aa66b035a9c6c215a5e692d55ea76e0f63cdfa9ade472f37cd8c2475bd8f9fe5f2121810fe814b6b6b04f3011bbd918c4be098a1dd3f683e4569be

Download Submit
C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\e0fffa5a46421f4519a93132745cd153\Admin@OARDHGDN_en-US\System\Process.txt

Filesize
4KB

MD5
16951e27d7b1629e30736e205664c0be

SHA1
b959efa4063f1a0443ee1ee1c64c4e7b75a2a7e2

SHA256
28c860e35677240439d920dcc28099021f84a3f05dc5175b8a19b9df691b0cd8

SHA512
1e0db531866af8a07ddfa2dc44f0ea7819abcc0b49645832a7781fc9e9cfc57e72a7a64b49a7a122985e2f46f067eabae141adf6932da02308fe455871ddd824

Download Submit
memory/1964-3-0x0000000005790000-0x00000000057F6000-memory.dmp

Filesize
408KB

Download
memory/1964-0-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/1964-119-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/1964-2-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/1964-149-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/1964-150-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/1964-152-0x0000000006310000-0x00000000063A2000-memory.dmp

Filesize
584KB

Download
memory/1964-153-0x0000000006960000-0x0000000006F04000-memory.dmp

Filesize
5.6MB

Download
memory/1964-157-0x0000000006520000-0x000000000652A000-memory.dmp

Filesize
40KB

Download
memory/1964-1-0x0000000000DB0000-0x0000000000DE0000-memory.dmp

Filesize
192KB

Download
memory/1964-163-0x0000000006570000-0x0000000006582000-memory.dmp

Filesize
72KB

Download
memory/1964-186-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads