asyncrat | 5734066bf76cf5274a6d830ac4fc4d12162f1c1f508ae4b1babdd27ba62fb300

Analysis

max time kernel
138s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17-05-2024 14:44

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General

Target

Tax documents PDF.exe
Size

31KB
MD5

4db45c5fdb9e115b922bdf007523f082
SHA1

90297382a170ff3ea7931db2425329d0b2f70f04
SHA256

a73709c1b5f1f875ee35f477c4e263a57050c36e2cff31ad1ceca17d9623e7cd
SHA512

7f0bcb2ee96c523cce764d1ec7d197d3aadddcf6fae71b63e88c3a26883b2f2fb4a446187adfbb023be779056ebc0ea50a785c72bbe97bb7dca41a810d0ff6c7
SSDEEP

384:V4Kj/M8y6ryzqEt7a9Oey+IFdP64VYaEwDtiBgxoxlnLr2STchsCxXBhgBx4eMDg:VHDXr+VWOV+csoHViBBn+hRIqeMDGt

Score

10^/10

asyncrat venom clients persistence rat

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

5.253.84.218:7878

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

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

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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*ChromeUpdate = "rundll32.exe C:\\Users\\Admin\\Documents\\ChromeData.dll,EntryPoint"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 904 set thread context of 3860	904	Tax documents PDF.exe	100

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3860	csc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 3860	904	Tax documents PDF.exe	100
PID 904 wrote to memory of 3860	904	Tax documents PDF.exe	100
PID 904 wrote to memory of 3860	904	Tax documents PDF.exe	100
PID 904 wrote to memory of 3860	904	Tax documents PDF.exe	100
PID 904 wrote to memory of 3860	904	Tax documents PDF.exe	100
PID 904 wrote to memory of 4668	904	Tax documents PDF.exe	101
PID 904 wrote to memory of 4668	904	Tax documents PDF.exe	101
PID 904 wrote to memory of 4668	904	Tax documents PDF.exe	101
PID 4668 wrote to memory of 4256	4668	cmd.exe	103
PID 4668 wrote to memory of 4256	4668	cmd.exe	103
PID 4668 wrote to memory of 4256	4668	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\Tax documents PDF.exe
"C:\Users\Admin\AppData\Local\Temp\Tax documents PDF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:904
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3860
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4668
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*ChromeUpdate" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\ChromeData.dll",EntryPoint /f
    3⤵
    - Adds Run key to start application
    PID:4256

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3720 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:5988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/904-1-0x00000000102E6000-0x0000000010300000-memory.dmp

Filesize
104KB

Download
memory/904-0-0x0000000010000000-0x0000000012D6D000-memory.dmp

Filesize
45.4MB

Download
memory/904-3-0x0000000010000000-0x0000000012D6D000-memory.dmp

Filesize
45.4MB

Download
memory/904-2-0x0000000010000000-0x0000000012D6D000-memory.dmp

Filesize
45.4MB

Download
memory/904-4-0x0000000010000000-0x0000000012D6D000-memory.dmp

Filesize
45.4MB

Download
memory/904-7-0x0000000010000000-0x0000000012D6D000-memory.dmp

Filesize
45.4MB

Download
memory/3860-5-0x0000000000320000-0x0000000000336000-memory.dmp

Filesize
88KB

Download
memory/3860-8-0x0000000073BDE000-0x0000000073BDF000-memory.dmp

Filesize
4KB

Download
memory/3860-9-0x0000000073BDE000-0x0000000073BDF000-memory.dmp

Filesize
4KB

Download
memory/3860-10-0x00000000057A0000-0x000000000583C000-memory.dmp

Filesize
624KB

Download
memory/3860-11-0x0000000005DF0000-0x0000000006394000-memory.dmp

Filesize
5.6MB

Download
memory/3860-12-0x00000000058B0000-0x0000000005916000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads