asyncrat | a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
29/07/2024, 10:25

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General

Target

a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1.exe
Size

7.7MB
MD5

02a576c11678bb469de93edf81dfdda3
SHA1

dae0bffab8bb5d17803262275b7803557d756e03
SHA256

a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1
SHA512

4b5e6698e52f66cb32ed7c8a3765a9594cb2ab42a52bee5f525a1d23903846bbea49fae57b5ab64f97a6f4f393857319eab0905be463543eef30193cb6ed8431
SSDEEP

24576:EJ2pbDE+yLMitYU03YDNrb+wLmS4rDILywPnt79Re50X5rqlI:+sDRxit70IDNr/4HILywPt7i

Score

10^/10

asyncrat default execution rat upx

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.2

Botnet

Default

41.216.183.111:4449

Mutex

kcnzlaqzjkle

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/2128-24-0x0000000002450000-0x0000000002468000-memory.dmp	family_asyncrat

Loads dropped DLL 1 IoCs

pid	Process
2128	regsvr32.EXE

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x00090000000234d4-21.dat	upx
behavioral2/memory/2128-23-0x00007FFC74240000-0x00007FFC74342000-memory.dmp	upx
behavioral2/memory/2128-27-0x00007FFC74240000-0x00007FFC74342000-memory.dmp	upx

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to execute payload.

execution

PowerShell

T1059.001

pid	Process
2344	powershell.exe
2344	powershell.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2344	powershell.exe
2344	powershell.exe
2128	regsvr32.EXE
2128	regsvr32.EXE
2128	regsvr32.EXE

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	2344	powershell.exe
Token: SeSecurityPrivilege	2344	powershell.exe
Token: SeTakeOwnershipPrivilege	2344	powershell.exe
Token: SeLoadDriverPrivilege	2344	powershell.exe
Token: SeSystemProfilePrivilege	2344	powershell.exe
Token: SeSystemtimePrivilege	2344	powershell.exe
Token: SeProfSingleProcessPrivilege	2344	powershell.exe
Token: SeIncBasePriorityPrivilege	2344	powershell.exe
Token: SeCreatePagefilePrivilege	2344	powershell.exe
Token: SeBackupPrivilege	2344	powershell.exe
Token: SeRestorePrivilege	2344	powershell.exe
Token: SeShutdownPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeSystemEnvironmentPrivilege	2344	powershell.exe
Token: SeRemoteShutdownPrivilege	2344	powershell.exe
Token: SeUndockPrivilege	2344	powershell.exe
Token: SeManageVolumePrivilege	2344	powershell.exe
Token: 33	2344	powershell.exe
Token: 34	2344	powershell.exe
Token: 35	2344	powershell.exe
Token: 36	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	2344	powershell.exe
Token: SeSecurityPrivilege	2344	powershell.exe
Token: SeTakeOwnershipPrivilege	2344	powershell.exe
Token: SeLoadDriverPrivilege	2344	powershell.exe
Token: SeSystemProfilePrivilege	2344	powershell.exe
Token: SeSystemtimePrivilege	2344	powershell.exe
Token: SeProfSingleProcessPrivilege	2344	powershell.exe
Token: SeIncBasePriorityPrivilege	2344	powershell.exe
Token: SeCreatePagefilePrivilege	2344	powershell.exe
Token: SeBackupPrivilege	2344	powershell.exe
Token: SeRestorePrivilege	2344	powershell.exe
Token: SeShutdownPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeSystemEnvironmentPrivilege	2344	powershell.exe
Token: SeRemoteShutdownPrivilege	2344	powershell.exe
Token: SeUndockPrivilege	2344	powershell.exe
Token: SeManageVolumePrivilege	2344	powershell.exe
Token: 33	2344	powershell.exe
Token: 34	2344	powershell.exe
Token: 35	2344	powershell.exe
Token: 36	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	2344	powershell.exe
Token: SeSecurityPrivilege	2344	powershell.exe
Token: SeTakeOwnershipPrivilege	2344	powershell.exe
Token: SeLoadDriverPrivilege	2344	powershell.exe
Token: SeSystemProfilePrivilege	2344	powershell.exe
Token: SeSystemtimePrivilege	2344	powershell.exe
Token: SeProfSingleProcessPrivilege	2344	powershell.exe
Token: SeIncBasePriorityPrivilege	2344	powershell.exe
Token: SeCreatePagefilePrivilege	2344	powershell.exe
Token: SeBackupPrivilege	2344	powershell.exe
Token: SeRestorePrivilege	2344	powershell.exe
Token: SeShutdownPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeSystemEnvironmentPrivilege	2344	powershell.exe
Token: SeRemoteShutdownPrivilege	2344	powershell.exe
Token: SeUndockPrivilege	2344	powershell.exe
Token: SeManageVolumePrivilege	2344	powershell.exe
Token: 33	2344	powershell.exe
Token: 34	2344	powershell.exe
Token: 35	2344	powershell.exe
Token: 36	2344	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	regsvr32.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 972 wrote to memory of 2568	972	a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1.exe	90
PID 972 wrote to memory of 2568	972	a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1.exe	90
PID 2568 wrote to memory of 2344	2568	conhost.exe	91
PID 2568 wrote to memory of 2344	2568	conhost.exe	91

C:\Users\Admin\AppData\Local\Temp\a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1.exe
"C:\Users\Admin\AppData\Local\Temp\a906b97520b2cea778426a1e634890e9142930f2dd47ccf8fe3781a15050adc1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:972
- C:\Windows\system32\conhost.exe
  "conhost.exe" --headless powershell.exe "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/i:III C:\Users\Admin\AppData/Roaming/1pOh.dll\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'NrcgW Prefetch' -Description 'Default' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries)"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2568
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe "Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute \"regsvr32\" -Argument \"/i:III C:\Users\Admin\AppData/Roaming/1pOh.dll\") -Trigger (New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) -RepetitionInterval (New-TimeSpan -Minutes 1)) -TaskName 'NrcgW Prefetch' -Description 'Default' -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries)"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2344

C:\Windows\system32\regsvr32.EXE
C:\Windows\system32\regsvr32.EXE /i:III C:\Users\Admin\AppData/Roaming/1pOh.dll
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2128

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fsgmn2jn.h0o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\1pOh.dll

Filesize
1.3MB

MD5
cfd6d82a2539c32738c133916c92006b

SHA1
2ca7659eb93ee76d28108e4606d44fce04571208

SHA256
d559dbd5957ee8757a5af765f55f8eb6709b969390296e33bc4e7b1a85f838a0

SHA512
35900c5a8bee5591eacaa8edf93205c207220c0ef16ebd15ffa90e536796e5f012089a28ea7a68f070c6478b42571f185b0c3b3f90bb5e0b42598f7546fbcc95

Download Submit
memory/972-20-0x00007FF6103F0000-0x00007FF610BAB000-memory.dmp

Filesize
7.7MB

Download
memory/2128-23-0x00007FFC74240000-0x00007FFC74342000-memory.dmp

Filesize
1.0MB

Download
memory/2128-24-0x0000000002450000-0x0000000002468000-memory.dmp

Filesize
96KB

Download
memory/2128-27-0x00007FFC74240000-0x00007FFC74342000-memory.dmp

Filesize
1.0MB

Download
memory/2344-0-0x00007FFC72253000-0x00007FFC72255000-memory.dmp

Filesize
8KB

Download
memory/2344-2-0x0000015820210000-0x0000015820232000-memory.dmp

Filesize
136KB

Download
memory/2344-11-0x00007FFC72250000-0x00007FFC72D11000-memory.dmp

Filesize
10.8MB

Download
memory/2344-12-0x00007FFC72250000-0x00007FFC72D11000-memory.dmp

Filesize
10.8MB

Download
memory/2344-13-0x00007FFC72250000-0x00007FFC72D11000-memory.dmp

Filesize
10.8MB

Download
memory/2344-16-0x00007FFC72250000-0x00007FFC72D11000-memory.dmp

Filesize
10.8MB

Download