asyncrat | 2e8cae53d7ce5f3fafc29ededea07d4eff4846d313ea643617cf3915e6400364

Resubmissions

23-08-2024 12:00

240823-n6fc3aseme 10

21-08-2024 11:53

240821-n2b5vazhmk 10

Analysis

max time kernel
107s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-08-2024 11:53

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General

Target

14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe
Size

331KB
MD5

3a0a8189bb8910131bd13c098a1de18b
SHA1

600ff8878e9782ff7d3df847b379eca20d3e3bdd
SHA256

14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5
SHA512

7c55c20d70f08b0c57390fc1decf1d26573c7e04738f1187e2ab3b8ecb0e3aebc06072f88724735828e114cad6592346c0c6b3a8db90c0b5765571fd5beefb6f
SSDEEP

6144:o2x6R9b8D6InoSbfVmEtpMMlRMH9O1BNI:o46R9b87noWYapMMlRMo7I

Score

10^/10

asyncrat stealerium default collection credential_access discovery persistence privilege_escalation rat stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

45.66.231.150:3232

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4924 created 3424	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	56

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/4012-2-0x000001C8C4CD0000-0x000001C8C4CE6000-memory.dmp	family_asyncrat

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
37	icanhazip.com
39	ip-api.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 queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	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
4064	cmd.exe
1248	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	notepad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	notepad.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe
4012	notepad.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4012	notepad.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86
PID 4924 wrote to memory of 4012	4924	14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe
  "C:\Users\Admin\AppData\Local\Temp\14013550a58552ac118e82a83986704af2ff16e7ad74e1ff064cb20e288606b5.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
  - Suspicious use of WriteProcessMemory
  PID:4924
- C:\Windows\System32\notepad.exe
  C:\Windows\System32\notepad.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4012
- - C:\Windows\System32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:4064
  - - C:\Windows\System32\chcp.com
      chcp 65001
      4⤵
      PID:2644
  - - C:\Windows\System32\netsh.exe
      netsh wlan show profile
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Network Configuration Discovery: Wi-Fi Discovery
      PID:1248
  - - C:\Windows\System32\findstr.exe
      findstr All
      4⤵
      PID:3820
- - C:\Windows\System32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    PID:1104
  - - C:\Windows\System32\chcp.com
      chcp 65001
      4⤵
      PID:3440
  - - C:\Windows\System32\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      PID:1916

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

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\875be8b7a90dc6059b6e58647a984744\Admin@HVDPCYGS_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\875be8b7a90dc6059b6e58647a984744\Admin@HVDPCYGS_en-US\System\Process.txt

Filesize
3KB

MD5
1bbdbd01721d4a322a067baecb769e29

SHA1
80880dd8b149995251c56ec84be95b6ec43e833d

SHA256
167fe9430375eeb0a4dedf7d7dfefa9a0d66da666a614b2cabd05ee373227926

SHA512
c11435f69dcc3eb333df49a5f312e3da7069b6ad0a66efe260c8ad075ed2050ac0ae4ee30c9e55619d1b29dee0554cb2e4b746576cdbd4f8e6075aad85f3ef0f

Download Submit
C:\Users\Admin\AppData\Local\875be8b7a90dc6059b6e58647a984744\Admin@HVDPCYGS_en-US\System\Process.txt

Filesize
4KB

MD5
65ee9040da0b14d01dabd46b836fac70

SHA1
556007357c9fc8636776d18b515aff03ceb20bf1

SHA256
6500921bb81d8ecb82cd5dea776f103ebed7101366d46397059f58c5d6146109

SHA512
aa0bdddc383d6b5f36131c3b8f25a2b104162c436d6d67f5aa5b576f228749714656abac712551299809299c0404a0961604b8daf67ded42f04f33a45688841e

Download Submit
memory/4012-16-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-19-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-7-0x000001C8DDB30000-0x000001C8DDBA6000-memory.dmp

Filesize
472KB

Download
memory/4012-8-0x000001C8DDBB0000-0x000001C8DDD38000-memory.dmp

Filesize
1.5MB

Download
memory/4012-9-0x000001C8C4EE0000-0x000001C8C4EFE000-memory.dmp

Filesize
120KB

Download
memory/4012-14-0x000001C8C4D90000-0x000001C8C4D9A000-memory.dmp

Filesize
40KB

Download
memory/4012-15-0x00007FF9BB1D3000-0x00007FF9BB1D5000-memory.dmp

Filesize
8KB

Download
memory/4012-0-0x000001C8C31A0000-0x000001C8C31B6000-memory.dmp

Filesize
88KB

Download
memory/4012-17-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-4-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-3-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-2-0x000001C8C4CD0000-0x000001C8C4CE6000-memory.dmp

Filesize
88KB

Download
memory/4012-163-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-165-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-166-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

Download
memory/4012-177-0x000001C8DE140000-0x000001C8DE1BA000-memory.dmp

Filesize
488KB

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memory/4012-1-0x00007FF9BB1D3000-0x00007FF9BB1D5000-memory.dmp

Filesize
8KB

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memory/4012-212-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

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memory/4012-213-0x00007FF9BB1D0000-0x00007FF9BBC91000-memory.dmp

Filesize
10.8MB

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