asyncrat | 27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2

Analysis

max time kernel
150s
max time network
136s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 18:36

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General

Target

27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
Size

74KB
MD5

c3f58ffd73d3afc5cc08a29dc5a864c8
SHA1

aad0a8c93043e3a4f7c422278c9c02a016ed55b7
SHA256

27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2
SHA512

4d45d348bbbc2d503eea99c7265e68c6ce87cf8be982ba153c6e8e6c58484476fc4287a91f8cff2eaa3f4ff1de04e02b2b4bcb597326c6963b28967670fc50b7
SSDEEP

1536:EUgQcxI76jCsGPMV19BsmGYIek1bd/VgSQzceLVclN:EUVcxI7q3GPMVz9jk1bd9Q3BY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

119.59.98.116:7812

Mutex

WindowsDefendersecurityService

Attributes

delay
1
install
true
install_file
Windows Defender Security Service.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2504-1-0x0000000000260000-0x0000000000278000-memory.dmp	VenomRAT
behavioral1/files/0x001f000000018649-17.dat	VenomRAT
behavioral1/memory/2720-18-0x0000000000FE0000-0x0000000000FF8000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x001f000000018649-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2720	Windows Defender Security Service.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2280	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
2700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe
2720	Windows Defender Security Service.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
Token: SeDebugPrivilege	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
Token: SeDebugPrivilege	2720	Windows Defender Security Service.exe
Token: SeDebugPrivilege	2720	Windows Defender Security Service.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2720	Windows Defender Security Service.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2180	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	29
PID 2504 wrote to memory of 2180	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	29
PID 2504 wrote to memory of 2180	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	29
PID 2504 wrote to memory of 2040	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	30
PID 2504 wrote to memory of 2040	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	30
PID 2504 wrote to memory of 2040	2504	27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe	30
PID 2180 wrote to memory of 2700	2180	cmd.exe	33
PID 2180 wrote to memory of 2700	2180	cmd.exe	33
PID 2180 wrote to memory of 2700	2180	cmd.exe	33
PID 2040 wrote to memory of 2280	2040	cmd.exe	34
PID 2040 wrote to memory of 2280	2040	cmd.exe	34
PID 2040 wrote to memory of 2280	2040	cmd.exe	34
PID 2040 wrote to memory of 2720	2040	cmd.exe	35
PID 2040 wrote to memory of 2720	2040	cmd.exe	35
PID 2040 wrote to memory of 2720	2040	cmd.exe	35

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

C:\Users\Admin\AppData\Local\Temp\27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe
"C:\Users\Admin\AppData\Local\Temp\27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender Security Service" /tr '"C:\Users\Admin\AppData\Roaming\Windows Defender Security Service.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2180
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender Security Service" /tr '"C:\Users\Admin\AppData\Roaming\Windows Defender Security Service.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2700
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4089.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2280
- - C:\Users\Admin\AppData\Roaming\Windows Defender Security Service.exe
    "C:\Users\Admin\AppData\Roaming\Windows Defender Security Service.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4089.tmp.bat

Filesize
178B

MD5
9a7759c4581a938ad04c532050271093

SHA1
25f5b8b29927caab59c9ef2977f3eeeda343a012

SHA256
69ea1532f70ad1f8a5dd08f9a627f140de30116b1bb22bc02a64b007e090b724

SHA512
abe637db3a7fda7366dbd68dbac62332da2b2a4293635f4aec9deb20a15b61db724899473bf3e0720103261ad18a5ab0661c3900acb25f003e84f5874eb75ec8

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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C:\Users\Admin\AppData\Roaming\Windows Defender Security Service.exe

Filesize
74KB

MD5
c3f58ffd73d3afc5cc08a29dc5a864c8

SHA1
aad0a8c93043e3a4f7c422278c9c02a016ed55b7

SHA256
27d16a4b6970b62bc05c437177605391f7788a3e602e69da9d1375ace81b4ee2

SHA512
4d45d348bbbc2d503eea99c7265e68c6ce87cf8be982ba153c6e8e6c58484476fc4287a91f8cff2eaa3f4ff1de04e02b2b4bcb597326c6963b28967670fc50b7

Download Submit
memory/2504-0-0x000007FEF6523000-0x000007FEF6524000-memory.dmp

Filesize
4KB

Download
memory/2504-1-0x0000000000260000-0x0000000000278000-memory.dmp

Filesize
96KB

Download
memory/2504-3-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2504-11-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2504-13-0x000007FEF6520000-0x000007FEF6F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2720-18-0x0000000000FE0000-0x0000000000FF8000-memory.dmp

Filesize
96KB

Download