asyncrat | 52a5a1066a27d5d8fd821f3465ad0fb923de343a385a22c50b0314c610f5f888

Analysis

max time kernel
40s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14/09/2024, 14:53 UTC

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General

Target

toolinfo.exe
Size

175KB
MD5

56085bbed1d6ab185bcf0517d97d1b79
SHA1

2b656acb110e339a3aaadf7bc72b88a425b2cd9d
SHA256

52a5a1066a27d5d8fd821f3465ad0fb923de343a385a22c50b0314c610f5f888
SHA512

4c214cfe82da0a55773b1eff38487314a7b8378b0a864ab9bab79132f0918c84b74b05099abded855fcc72fbd2cdfd2e9fa86089840c614014171d429a8b4e1e
SSDEEP

3072:ae8oX8Sb5KcXrtkkXmf/bDsvqtU+lLToChAP0UZ0b2gTCwAqE+Wpor:bXtb5KcXr7XmfgqtjhAxZ0b2r

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/bot7501791879:AAEoWKncu4Ny3OehQpAolbAkBYy7c0_UhCo/sendMessage?chat_id=6327080418

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

1
VIfxfqryUTyZUBGDCBAvbYVYIsexIM7Z

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/2092-1-0x0000000000080000-0x00000000000B2000-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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	toolinfo.exe
File opened for modification	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	toolinfo.exe
File created	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	toolinfo.exe
File created	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	toolinfo.exe
File opened for modification	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	toolinfo.exe
File created	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	toolinfo.exe
File opened for modification	C:\Users\Admin\AppData\Local\3128467ea10da0e6c2a01ab2fae2ff31\Admin@JSMURNPT_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	toolinfo.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 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

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

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
1388	netsh.exe
2004	cmd.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	toolinfo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	toolinfo.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2092	toolinfo.exe
2092	toolinfo.exe
2092	toolinfo.exe
2092	toolinfo.exe
2092	toolinfo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	toolinfo.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2004	2092	toolinfo.exe	32
PID 2092 wrote to memory of 2004	2092	toolinfo.exe	32
PID 2092 wrote to memory of 2004	2092	toolinfo.exe	32
PID 2092 wrote to memory of 2004	2092	toolinfo.exe	32
PID 2004 wrote to memory of 852	2004	cmd.exe	34
PID 2004 wrote to memory of 852	2004	cmd.exe	34
PID 2004 wrote to memory of 852	2004	cmd.exe	34
PID 2004 wrote to memory of 852	2004	cmd.exe	34
PID 2004 wrote to memory of 1388	2004	cmd.exe	35
PID 2004 wrote to memory of 1388	2004	cmd.exe	35
PID 2004 wrote to memory of 1388	2004	cmd.exe	35
PID 2004 wrote to memory of 1388	2004	cmd.exe	35
PID 2004 wrote to memory of 316	2004	cmd.exe	36
PID 2004 wrote to memory of 316	2004	cmd.exe	36
PID 2004 wrote to memory of 316	2004	cmd.exe	36
PID 2004 wrote to memory of 316	2004	cmd.exe	36
PID 2092 wrote to memory of 1812	2092	toolinfo.exe	37
PID 2092 wrote to memory of 1812	2092	toolinfo.exe	37
PID 2092 wrote to memory of 1812	2092	toolinfo.exe	37
PID 2092 wrote to memory of 1812	2092	toolinfo.exe	37
PID 1812 wrote to memory of 2188	1812	cmd.exe	39
PID 1812 wrote to memory of 2188	1812	cmd.exe	39
PID 1812 wrote to memory of 2188	1812	cmd.exe	39
PID 1812 wrote to memory of 2188	1812	cmd.exe	39
PID 1812 wrote to memory of 1816	1812	cmd.exe	40
PID 1812 wrote to memory of 1816	1812	cmd.exe	40
PID 1812 wrote to memory of 1816	1812	cmd.exe	40
PID 1812 wrote to memory of 1816	1812	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\toolinfo.exe
"C:\Users\Admin\AppData\Local\Temp\toolinfo.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:2092
- 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:2004
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:852
- - 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:1388
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:316
- 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:1812
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2188
- - 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:1816

Network

DNS

icanhazip.com

toolinfo.exe

Remote address:

8.8.8.8:53

Request

icanhazip.com

IN A

Response

icanhazip.com

IN A

104.16.184.241

icanhazip.com

IN A

104.16.185.241
GET

http://icanhazip.com/

toolinfo.exe

Remote address:

104.16.184.241:80

Request

GET / HTTP/1.1
Host: icanhazip.com
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Sat, 14 Sep 2024 14:54:29 GMT
Content-Type: text/plain
Content-Length: 14
Connection: keep-alive
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET
Set-Cookie: __cf_bm=tqmBaXLDsp8LupfQiGEWzR6uUUDLPk_aCz38pHlOcNw-1726325669-1.0.1.1-C.XklfrdDwylG5UG3MdgR2CDPWwFD91VKmHIXX.waCNVs61ieWrt8mBmL.OGCaOb6LguXNYVvCFtbf2RjA8ddA; path=/; expires=Sat, 14-Sep-24 15:24:29 GMT; domain=.icanhazip.com; HttpOnly
Server: cloudflare
CF-RAY: 8c313667a86593e1-LHR
alt-svc: h3=":443"; ma=86400
DNS

api.mylnikov.org

toolinfo.exe

Remote address:

8.8.8.8:53

Request

api.mylnikov.org

IN A

Response

api.mylnikov.org

IN A

104.21.44.66

api.mylnikov.org

IN A

172.67.196.114
GET

https://api.mylnikov.org/geolocation/wifi?v=1.1&bssid=0e:ca:3f:e3:c2:84

toolinfo.exe

Remote address:

104.21.44.66:443

Request

GET /geolocation/wifi?v=1.1&bssid=0e:ca:3f:e3:c2:84 HTTP/1.1
Host: api.mylnikov.org
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Sat, 14 Sep 2024 14:54:29 GMT
Content-Type: application/json; charset=utf8
Content-Length: 88
Connection: keep-alive
Access-Control-Allow-Origin: *
Cache-Control: max-age=2678400
CF-Cache-Status: MISS
Last-Modified: Sat, 14 Sep 2024 14:54:29 GMT
Accept-Ranges: bytes
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=jHXwrJflttpzVi2xOoY5fcFnuqh7SdnxDbmEsQ7n7lcP8pdRtw4OSMPxnmSAsovSoTQ0Pc1ydEPrA4YIhLurwMyWhTXbZ9lqtPdwrh76Afcu%2FmUpnIZUZWULZIGP%2F6s%2BuyWM"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Strict-Transport-Security: max-age=0; preload
X-Content-Type-Options: nosniff
Server: cloudflare
CF-RAY: 8c31366a5ef27300-LHR
alt-svc: h3=":443"; ma=86400
DNS

api.telegram.org

toolinfo.exe

Remote address:

8.8.8.8:53

Request

api.telegram.org

IN A

Response

api.telegram.org

IN A

149.154.167.220

104.16.184.241:80

http://icanhazip.com/

http

toolinfo.exe

247 B
668 B
4
3

HTTP Request

GET http://icanhazip.com/

HTTP Response

200
104.21.44.66:443

https://api.mylnikov.org/geolocation/wifi?v=1.1&bssid=0e:ca:3f:e3:c2:84

tls, http

toolinfo.exe

787 B
5.0kB
8
9

HTTP Request

GET https://api.mylnikov.org/geolocation/wifi?v=1.1&bssid=0e:ca:3f:e3:c2:84

HTTP Response

200
149.154.167.220:443

api.telegram.org

tls

toolinfo.exe

388 B
219 B
5
5
149.154.167.220:443

api.telegram.org

tls

toolinfo.exe

388 B
219 B
5
5
127.0.0.1:6606

toolinfo.exe
127.0.0.1:7707

toolinfo.exe
127.0.0.1:7707

toolinfo.exe
127.0.0.1:8808

toolinfo.exe
127.0.0.1:6606

toolinfo.exe

8.8.8.8:53

icanhazip.com

dns

toolinfo.exe

59 B
91 B
1
1

DNS Request

icanhazip.com

DNS Response

104.16.184.241

104.16.185.241
8.8.8.8:53

api.mylnikov.org

dns

toolinfo.exe

62 B
94 B
1
1

DNS Request

api.mylnikov.org

DNS Response

104.21.44.66

172.67.196.114
8.8.8.8:53

api.telegram.org

dns

toolinfo.exe

62 B
78 B
1
1

DNS Request

api.telegram.org

DNS Response

149.154.167.220

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\3128467ea10da0e6c2a01ab2fae2ff31\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2092-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x0000000000080000-0x00000000000B2000-memory.dmp

Filesize
200KB

Download
memory/2092-2-0x0000000074E50000-0x000000007553E000-memory.dmp

Filesize
6.9MB

Download
memory/2092-73-0x0000000074E50000-0x000000007553E000-memory.dmp

Filesize
6.9MB

Download
memory/2092-77-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/2092-78-0x0000000074E50000-0x000000007553E000-memory.dmp

Filesize
6.9MB

Download
memory/2092-84-0x0000000074E50000-0x000000007553E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

HTTP Request

HTTP Response

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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