asyncrat | e828e2b51c2c5412e66a660792ef393ce52c8e31d41d9c1adcac81367728fea6

Analysis

max time kernel
149s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-10-2024 19:50

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General

Target

IChanger.exe
Size

2.6MB
MD5

de70283085ca45f6b19bc3beb373e970
SHA1

30bcdfc110d03006ba0efd89def64628d2715ead
SHA256

e828e2b51c2c5412e66a660792ef393ce52c8e31d41d9c1adcac81367728fea6
SHA512

0e32b346714cf244e24ce0e6515e558c7a29157304e24f14d44ff3488486c19f9f0403fddb48dc6e95a3489eca503697d16c7e0e8e76d0e84264522af3e6d2c1
SSDEEP

49152:vG4DuZSgBVz68epmUAJWrrQiODZXHBdG:e7paboUS1dX3G

Score

10^/10

asyncrat stormkitty default 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/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 2 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012116-7.dat	family_stormkitty
behavioral1/memory/2116-13-0x0000000000D40000-0x0000000000D72000-memory.dmp	family_stormkitty

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 3056 created 1192	3056	IChanger.exe	21

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0007000000012116-7.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2116	Setup.exe

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) 8 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Setup.exe
File opened for modification	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Setup.exe
File created	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Setup.exe
File opened for modification	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Setup.exe
File created	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Setup.exe
File opened for modification	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Setup.exe
File created	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Setup.exe
File opened for modification	C:\Users\Admin\AppData\Local\b3e5edd1bfa933e57445ae55dc3e7508\Admin@VORHPBAB_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Setup.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.

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3056 set thread context of 544	3056	IChanger.exe	31

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 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
Key opened	\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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Setup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2864	cmd.exe
2980	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Setup.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Setup.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2116	Setup.exe
2116	Setup.exe
2116	Setup.exe
2116	Setup.exe
2116	Setup.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	Setup.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 2116	3056	IChanger.exe	30
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 3056 wrote to memory of 544	3056	IChanger.exe	31
PID 2116 wrote to memory of 2864	2116	Setup.exe	33
PID 2116 wrote to memory of 2864	2116	Setup.exe	33
PID 2116 wrote to memory of 2864	2116	Setup.exe	33
PID 2116 wrote to memory of 2864	2116	Setup.exe	33
PID 2864 wrote to memory of 2952	2864	cmd.exe	35
PID 2864 wrote to memory of 2952	2864	cmd.exe	35
PID 2864 wrote to memory of 2952	2864	cmd.exe	35
PID 2864 wrote to memory of 2952	2864	cmd.exe	35
PID 2864 wrote to memory of 2980	2864	cmd.exe	36
PID 2864 wrote to memory of 2980	2864	cmd.exe	36
PID 2864 wrote to memory of 2980	2864	cmd.exe	36
PID 2864 wrote to memory of 2980	2864	cmd.exe	36
PID 2864 wrote to memory of 2200	2864	cmd.exe	37
PID 2864 wrote to memory of 2200	2864	cmd.exe	37
PID 2864 wrote to memory of 2200	2864	cmd.exe	37
PID 2864 wrote to memory of 2200	2864	cmd.exe	37
PID 2116 wrote to memory of 2016	2116	Setup.exe	38
PID 2116 wrote to memory of 2016	2116	Setup.exe	38
PID 2116 wrote to memory of 2016	2116	Setup.exe	38
PID 2116 wrote to memory of 2016	2116	Setup.exe	38
PID 2016 wrote to memory of 2036	2016	cmd.exe	40
PID 2016 wrote to memory of 2036	2016	cmd.exe	40
PID 2016 wrote to memory of 2036	2016	cmd.exe	40
PID 2016 wrote to memory of 2036	2016	cmd.exe	40
PID 2016 wrote to memory of 1832	2016	cmd.exe	41
PID 2016 wrote to memory of 1832	2016	cmd.exe	41
PID 2016 wrote to memory of 1832	2016	cmd.exe	41
PID 2016 wrote to memory of 1832	2016	cmd.exe	41

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1192
- C:\Users\Admin\AppData\Local\Temp\IChanger.exe
  "C:\Users\Admin\AppData\Local\Temp\IChanger.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    3⤵
    - Executes dropped EXE
    - 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:2116
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Wi-Fi Discovery
      Suspicious use of WriteProcessMemory
      PID:2864
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2952
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh wlan show profile
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:2980
    - - C:\Windows\SysWOW64\findstr.exe
        
        findstr All
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2200
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2016
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2036
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh wlan show networks mode=bssid
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        
        PID:1832
- C:\Users\Admin\AppData\Local\Temp\IChanger.exe
  "C:\Users\Admin\AppData\Local\Temp\IChanger.exe"
  2⤵
  PID:544

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\Temp\Setup.exe

Filesize
175KB

MD5
bace9f15b0e425259da0470e7ffe5520

SHA1
15462fe47362ead5c1e1e43665dc439e6c218c7f

SHA256
f4000e61d9c5929e2eab12382d5624fac3f96d3c27c2e42c5f374cc457ee8b4f

SHA512
2e0d2c87de91ecd3b95c7c99b4951cfc4a244de04e0b14f364a447c57c51e4c3e15fa3726a26b96bf408cf4e8bd3ba5980f0f8acb2fa757c93ae73f711d8a832

Download Submit
C:\Users\Admin\AppData\Local\c8c682ce3a5f31eff676f37a3ca575e2\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/544-11-0x0000000140000000-0x0000000140425000-memory.dmp

Filesize
4.1MB

Download
memory/2116-13-0x0000000000D40000-0x0000000000D72000-memory.dmp

Filesize
200KB

Download
memory/3056-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/3056-1-0x000000013F610000-0x000000013F8A2000-memory.dmp

Filesize
2.6MB

Download
memory/3056-2-0x000000001BF70000-0x000000001C120000-memory.dmp

Filesize
1.7MB

Download
memory/3056-10-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/3056-12-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download