asyncrat | 21ce45bf74febeeb420e9b63283c5ef6840463692adc17ac92e722b1a0dd149f

Analysis

max time kernel
150s
max time network
132s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/09/2024, 19:36

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General

Target

Cc Combo.exe
Size

232KB
MD5

e074dece1afd2a20f7e479a8319a7857
SHA1

9f8ae4d5373955498cb15d1b75f190e105f23186
SHA256

cdcfe612d9253b3104b432ff622a9f7a4271059eb3ded0b2f056be9d9950d78f
SHA512

5f232ed6f0dc29d913571614b39e353ea08941dde9ec07ca7925a5de17b97b1526e4f548421f703677a3b19babb4bc00310966e31f2a0bad02ff4bfa97b2a2a0
SSDEEP

6144:DDubaBBOBIIj6HLLYLCYJqvc1DegW1Db/Q/HbMhQLYiUJiz1o/65:GbaVgibWJLYxJem/6

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/bot7014456621:AAE7BXbm_jQfLpnUdyLpTUwGXyLN5AXvThw/sendMessage?chat_id=7389740990

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/280-1-0x00000000009B0000-0x00000000009F0000-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\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Cc Combo.exe
File opened for modification	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Cc Combo.exe
File opened for modification	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Cc Combo.exe
File opened for modification	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Cc Combo.exe
File created	C:\Users\Admin\AppData\Local\0993e88bac57648abc27b6785fde9d5c\Admin@WOUOSVRD_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Cc Combo.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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 9 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	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cc Combo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
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	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
2752	cmd.exe
1504	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	Cc Combo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Cc Combo.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe
280	Cc Combo.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	280	Cc Combo.exe
Token: SeDebugPrivilege	280	Cc Combo.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 280 wrote to memory of 2752	280	Cc Combo.exe	30
PID 280 wrote to memory of 2752	280	Cc Combo.exe	30
PID 280 wrote to memory of 2752	280	Cc Combo.exe	30
PID 280 wrote to memory of 2752	280	Cc Combo.exe	30
PID 2752 wrote to memory of 1260	2752	cmd.exe	32
PID 2752 wrote to memory of 1260	2752	cmd.exe	32
PID 2752 wrote to memory of 1260	2752	cmd.exe	32
PID 2752 wrote to memory of 1260	2752	cmd.exe	32
PID 2752 wrote to memory of 1504	2752	cmd.exe	33
PID 2752 wrote to memory of 1504	2752	cmd.exe	33
PID 2752 wrote to memory of 1504	2752	cmd.exe	33
PID 2752 wrote to memory of 1504	2752	cmd.exe	33
PID 2752 wrote to memory of 556	2752	cmd.exe	34
PID 2752 wrote to memory of 556	2752	cmd.exe	34
PID 2752 wrote to memory of 556	2752	cmd.exe	34
PID 2752 wrote to memory of 556	2752	cmd.exe	34
PID 280 wrote to memory of 2844	280	Cc Combo.exe	35
PID 280 wrote to memory of 2844	280	Cc Combo.exe	35
PID 280 wrote to memory of 2844	280	Cc Combo.exe	35
PID 280 wrote to memory of 2844	280	Cc Combo.exe	35
PID 2844 wrote to memory of 3020	2844	cmd.exe	37
PID 2844 wrote to memory of 3020	2844	cmd.exe	37
PID 2844 wrote to memory of 3020	2844	cmd.exe	37
PID 2844 wrote to memory of 3020	2844	cmd.exe	37
PID 2844 wrote to memory of 3008	2844	cmd.exe	38
PID 2844 wrote to memory of 3008	2844	cmd.exe	38
PID 2844 wrote to memory of 3008	2844	cmd.exe	38
PID 2844 wrote to memory of 3008	2844	cmd.exe	38
PID 280 wrote to memory of 2488	280	Cc Combo.exe	39
PID 280 wrote to memory of 2488	280	Cc Combo.exe	39
PID 280 wrote to memory of 2488	280	Cc Combo.exe	39
PID 280 wrote to memory of 2488	280	Cc Combo.exe	39

C:\Users\Admin\AppData\Local\Temp\Cc Combo.exe
"C:\Users\Admin\AppData\Local\Temp\Cc Combo.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:280
- 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:2752
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1260
- - 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:1504
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:556
- 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:2844
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3020
- - 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:3008
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\Cc Combo.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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\7c3a51e796a8b0a55008c41db0b4f1d4\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/280-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/280-1-0x00000000009B0000-0x00000000009F0000-memory.dmp

Filesize
256KB

Download
memory/280-2-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/280-41-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/280-45-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/280-73-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download
memory/280-77-0x00000000748E0000-0x0000000074FCE000-memory.dmp

Filesize
6.9MB

Download