asyncrat | f4000e61d9c5929e2eab12382d5624fac3f96d3c27c2e42c5f374cc457ee8b4f

General

Target

Server.exe
Size

175KB
MD5

bace9f15b0e425259da0470e7ffe5520
SHA1

15462fe47362ead5c1e1e43665dc439e6c218c7f
SHA256

f4000e61d9c5929e2eab12382d5624fac3f96d3c27c2e42c5f374cc457ee8b4f
SHA512

2e0d2c87de91ecd3b95c7c99b4951cfc4a244de04e0b14f364a447c57c51e4c3e15fa3726a26b96bf408cf4e8bd3ba5980f0f8acb2fa757c93ae73f711d8a832
SSDEEP

3072:6e8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTgFwARE+WpCc:K6ewwIwQJ6vKX0c5MlYZ0b27

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/bot7510720859:AAHJ07lkxNWZwwJs6SC36WS0jVG9IR6m3pM/sendMessage?chat_id=6059920057

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
behavioral2/memory/2476-1-0x0000000000FA0000-0x0000000000FD2000-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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Server.exe
File opened for modification	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
33	pastebin.com
34	pastebin.com

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
23	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.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
4060	cmd.exe
3976	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	Server.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Server.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe
2476	Server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2476	Server.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 4060	2476	Server.exe	87
PID 2476 wrote to memory of 4060	2476	Server.exe	87
PID 2476 wrote to memory of 4060	2476	Server.exe	87
PID 4060 wrote to memory of 3800	4060	cmd.exe	89
PID 4060 wrote to memory of 3800	4060	cmd.exe	89
PID 4060 wrote to memory of 3800	4060	cmd.exe	89
PID 4060 wrote to memory of 3976	4060	cmd.exe	90
PID 4060 wrote to memory of 3976	4060	cmd.exe	90
PID 4060 wrote to memory of 3976	4060	cmd.exe	90
PID 4060 wrote to memory of 3964	4060	cmd.exe	91
PID 4060 wrote to memory of 3964	4060	cmd.exe	91
PID 4060 wrote to memory of 3964	4060	cmd.exe	91
PID 2476 wrote to memory of 5064	2476	Server.exe	92
PID 2476 wrote to memory of 5064	2476	Server.exe	92
PID 2476 wrote to memory of 5064	2476	Server.exe	92
PID 5064 wrote to memory of 4144	5064	cmd.exe	94
PID 5064 wrote to memory of 4144	5064	cmd.exe	94
PID 5064 wrote to memory of 4144	5064	cmd.exe	94
PID 5064 wrote to memory of 5028	5064	cmd.exe	95
PID 5064 wrote to memory of 5028	5064	cmd.exe	95
PID 5064 wrote to memory of 5028	5064	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.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:2476
- 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:4060
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3800
- - 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:3976
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3964
- 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:5064
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4144
- - 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:5028

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\7172c801c7048ee96d98d0fcf0037428\Admin@KVIWLPUJ_en-US\System\Process.txt

Filesize
4KB

MD5
3a8bcbf4728c850aa5decddde8d41c8e

SHA1
e2c50b7e4d82124154605c6f85186d94f5744e7b

SHA256
d8cd9e694d01855e394f37edcb6919422b2ea21000b506e3bc9f9836a801bbc6

SHA512
789c823547e27785ea7e3074146d20e81fb662075b37add63f5f0e5f9cd386cc092bb500d3a43afc4665e215458a4087920ee62d4886c4d59e2044f7eea3b98a

Download Submit
C:\Users\Admin\AppData\Local\b2a4129d590c5a0f13623e3ce4b6fd11\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2476-148-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2476-3-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/2476-123-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2476-2-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2476-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/2476-149-0x00000000746C0000-0x0000000074E70000-memory.dmp

Filesize
7.7MB

Download
memory/2476-150-0x00000000064E0000-0x0000000006572000-memory.dmp

Filesize
584KB

Download
memory/2476-151-0x0000000006B30000-0x00000000070D4000-memory.dmp

Filesize
5.6MB

Download
memory/2476-155-0x0000000006600000-0x000000000660A000-memory.dmp

Filesize
40KB

Download
memory/2476-1-0x0000000000FA0000-0x0000000000FD2000-memory.dmp

Filesize
200KB

Download
memory/2476-161-0x0000000006650000-0x0000000006662000-memory.dmp

Filesize
72KB

Download
memory/2476-186-0x00000000746C0000-0x0000000074E70000-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