asyncrat | 19317da5733e40de48774b836f81b6edd83a60976ef180b6e796928399cee1c3

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25-04-2024 13:11

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General

Target

hy.ps1
Size

9.0MB
MD5

c867dbeca2907417d58f0bfb4de699d6
SHA1

fa942ea34e59c938d9c307a9c5054118b21fa699
SHA256

19317da5733e40de48774b836f81b6edd83a60976ef180b6e796928399cee1c3
SHA512

2658decfca16f085932c43ee6397cb449ab7ecf041d2c46630a5fdb3075c21eb9e5836ddb2e9018f4aac99f68ba9a1c3e19973da5c9ca58fc9bb2f7278b557e5
SSDEEP

24576:sEAjJLSsZ05S8PllqWR4Q4/YVwCxCpMt8JNim5irz5aRt5vQZUZMc7JS0Ccn3ban:W8RVkwoFZ0qQpynBV

Score

10^/10

asyncrat stealerium default collection rat stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

91.92.252.234:3232

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 2596 created 3272	2596	powershell.exe	57

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/3956-17-0x000001BFFAFA0000-0x000001BFFAFB6000-memory.dmp	family_asyncrat
behavioral2/memory/3956-19-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp	family_asyncrat

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe
Key opened	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\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
49	icanhazip.com
51	ip-api.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

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 30 IoCs

pid	Process
2596	powershell.exe
2596	powershell.exe
2596	powershell.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe
3956	notepad.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs

pid	Process
2596	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	3956	notepad.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98
PID 2596 wrote to memory of 3956	2596	powershell.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	notepad.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3272
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\hy.ps1
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2596
- 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:3956
- - C:\Windows\System32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    PID:2700
  - - C:\Windows\System32\chcp.com
      chcp 65001
      4⤵
      PID:1240
  - - C:\Windows\System32\netsh.exe
      netsh wlan show profile
      4⤵
      PID:2624
  - - C:\Windows\System32\findstr.exe
      findstr All
      4⤵
      PID:3216
- - C:\Windows\System32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    PID:2000
  - - C:\Windows\System32\chcp.com
      chcp 65001
      4⤵
      PID:4292
  - - C:\Windows\System32\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      PID:3948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g4ufumdk.r1i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\a4bff383a5118b991cf9642d645e9bde\Admin@DTKUTJRL_en-US\System\Process.txt

Filesize
4KB

MD5
a69d63846548cad307babfdbe5ec3d57

SHA1
5241ba4430e05c5995b63de12e33b377828dc823

SHA256
a137992248e80d22bdab9e802de8a94b6824bcffb3d1d2031b4e6e2158fd1c2d

SHA512
541d6011bab23c0cafa0a883fc4f3aa5702bd4ee85c92ef488c80f9c085725b76f8aa9ca8459c17844715f0f8225e9a9c124e3ba92e3d40387b4829253ab9c1a

Download Submit
memory/2596-21-0x0000020F84E20000-0x0000020F84E30000-memory.dmp

Filesize
64KB

Download
memory/2596-0-0x0000020F9DD70000-0x0000020F9DD92000-memory.dmp

Filesize
136KB

Download
memory/2596-11-0x0000020F84E20000-0x0000020F84E30000-memory.dmp

Filesize
64KB

Download
memory/2596-12-0x0000020F84E20000-0x0000020F84E30000-memory.dmp

Filesize
64KB

Download
memory/2596-13-0x0000020F84E20000-0x0000020F84E30000-memory.dmp

Filesize
64KB

Download
memory/2596-14-0x0000020F9DEA0000-0x0000020F9DEFA000-memory.dmp

Filesize
360KB

Download
memory/2596-15-0x0000020F9DF60000-0x0000020F9DFBB000-memory.dmp

Filesize
364KB

Download
memory/2596-1-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/2596-25-0x0000020F9DF60000-0x0000020F9DFBB000-memory.dmp

Filesize
364KB

Download
memory/2596-24-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/3956-26-0x00007FF96DFF0000-0x00007FF96E1E5000-memory.dmp

Filesize
2.0MB

Download
memory/3956-16-0x000001BFF9470000-0x000001BFF9486000-memory.dmp

Filesize
88KB

Download
memory/3956-19-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-18-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/3956-17-0x000001BFFAFA0000-0x000001BFFAFB6000-memory.dmp

Filesize
88KB

Download
memory/3956-29-0x000001BFFBE30000-0x000001BFFBEA6000-memory.dmp

Filesize
472KB

Download
memory/3956-31-0x000001BFFB190000-0x000001BFFB1AE000-memory.dmp

Filesize
120KB

Download
memory/3956-30-0x000001BFFBEB0000-0x000001BFFC038000-memory.dmp

Filesize
1.5MB

Download
memory/3956-36-0x000001BFFB170000-0x000001BFFB17A000-memory.dmp

Filesize
40KB

Download
memory/3956-20-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-180-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-182-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-185-0x00007FF94FFF0000-0x00007FF950AB1000-memory.dmp

Filesize
10.8MB

Download
memory/3956-195-0x000001BFFC5B0000-0x000001BFFC62A000-memory.dmp

Filesize
488KB

Download
memory/3956-230-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-231-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-232-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-233-0x00007FF96DFF0000-0x00007FF96E1E5000-memory.dmp

Filesize
2.0MB

Download
memory/3956-234-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download
memory/3956-235-0x000001BFFBC20000-0x000001BFFBC30000-memory.dmp

Filesize
64KB

Download