asyncrat | 1583c039098be20a5d2076827affa434a8fd385f8e629ecdcdf44750d08dfbe2

General

Target

WindowsDF.exe
Size

74KB
MD5

3cedbc72cc821f346b56100c311f7caf
SHA1

09d762e1d9ec34854c50ab8c7063f7d44fd3165e
SHA256

1583c039098be20a5d2076827affa434a8fd385f8e629ecdcdf44750d08dfbe2
SHA512

04237742a94275fa68fb91b5a9d4dfd0f54174a6504bd726d63d53791dad2acc62356a74b8c0f2284fa93ad509468092c12fb1dc92c583d8197187b03b6301fa
SSDEEP

1536:/Uq0cxVGlCBiPMVsOieqIbW1bh/k0owuQzcKLVclN:/UTcxVMWiPMVTHW1bhvCQ7BY

Score

10^/10

asyncrat venomrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

189.14.53.123:1177

189.14.53.123:21053

Mutex

cijkkekfusbnuncqp

Attributes

delay
1
install
true
install_file
WindowsDefender.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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
behavioral1/memory/3024-1-0x0000000000C80000-0x0000000000C98000-memory.dmp	VenomRAT
behavioral1/files/0x0009000000017491-16.dat	VenomRAT
behavioral1/memory/2784-18-0x00000000001C0000-0x00000000001D8000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/files/0x0009000000017491-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

WindowsDefender.exe

pid	Process
2784	WindowsDefender.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2212	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

Processes:

schtasks.exe

pid	Process
2236	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WindowsDF.exeWindowsDefender.exe

pid	Process
3024	WindowsDF.exe
3024	WindowsDF.exe
3024	WindowsDF.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe
2784	WindowsDefender.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

WindowsDF.exeWindowsDefender.exe

description	pid	Process
Token: SeDebugPrivilege	3024	WindowsDF.exe
Token: SeDebugPrivilege	2784	WindowsDefender.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WindowsDefender.exe

pid	Process
2784	WindowsDefender.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

WindowsDF.execmd.execmd.exe

description	pid	Process	procid_target
PID 3024 wrote to memory of 2016	3024	WindowsDF.exe	31
PID 3024 wrote to memory of 2016	3024	WindowsDF.exe	31
PID 3024 wrote to memory of 2016	3024	WindowsDF.exe	31
PID 3024 wrote to memory of 2220	3024	WindowsDF.exe	32
PID 3024 wrote to memory of 2220	3024	WindowsDF.exe	32
PID 3024 wrote to memory of 2220	3024	WindowsDF.exe	32
PID 2220 wrote to memory of 2212	2220	cmd.exe	35
PID 2220 wrote to memory of 2212	2220	cmd.exe	35
PID 2220 wrote to memory of 2212	2220	cmd.exe	35
PID 2016 wrote to memory of 2236	2016	cmd.exe	36
PID 2016 wrote to memory of 2236	2016	cmd.exe	36
PID 2016 wrote to memory of 2236	2016	cmd.exe	36
PID 2220 wrote to memory of 2784	2220	cmd.exe	37
PID 2220 wrote to memory of 2784	2220	cmd.exe	37
PID 2220 wrote to memory of 2784	2220	cmd.exe	37

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\WindowsDF.exe
"C:\Users\Admin\AppData\Local\Temp\WindowsDF.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WindowsDefender" /tr '"C:\Users\Admin\AppData\Roaming\WindowsDefender.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WindowsDefender" /tr '"C:\Users\Admin\AppData\Roaming\WindowsDefender.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2236
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD9DB.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2212
- - C:\Users\Admin\AppData\Roaming\WindowsDefender.exe
    "C:\Users\Admin\AppData\Roaming\WindowsDefender.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD9DB.tmp.bat

Filesize
159B

MD5
45522004cfc70f6168aef4a969d4b832

SHA1
bc385ca7473d9e4e9d88b34710cc78b738e05a07

SHA256
841a6120f3b9c347685ee9a0d66eb350e20206031dd50bd7e1707c21f423c63e

SHA512
a5e33e882839742807be0746ea74309ab9a3745482ff18a5b0961a12aa44306ebe76829db8ad60966f2ea397b9ebcd18f6e60507c410909c6cbfaa1dd311d29c

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\WindowsDefender.exe

Filesize
74KB

MD5
3cedbc72cc821f346b56100c311f7caf

SHA1
09d762e1d9ec34854c50ab8c7063f7d44fd3165e

SHA256
1583c039098be20a5d2076827affa434a8fd385f8e629ecdcdf44750d08dfbe2

SHA512
04237742a94275fa68fb91b5a9d4dfd0f54174a6504bd726d63d53791dad2acc62356a74b8c0f2284fa93ad509468092c12fb1dc92c583d8197187b03b6301fa

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memory/2784-18-0x00000000001C0000-0x00000000001D8000-memory.dmp

Filesize
96KB

Download
memory/3024-0-0x000007FEF57B3000-0x000007FEF57B4000-memory.dmp

Filesize
4KB

Download
memory/3024-1-0x0000000000C80000-0x0000000000C98000-memory.dmp

Filesize
96KB

Download
memory/3024-3-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-14-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-12-0x000007FEF57B0000-0x000007FEF619C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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