asyncrat | 331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b

General

Target

331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
Size

73KB
MD5

3a3e19b6e7cf03c8c66839db4ebd031f
SHA1

b2a0bec39e05062bb7dd47ee7d57ab9e4ee0f817
SHA256

331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b
SHA512

525dc8e997fbc180dc1ac3c137f5c265a7b4268435a83523ef4005de38361e449255f1ea3c5f12fd21673553e0d7738bd72be9034022cbc2d177a2a123fcc9a7
SSDEEP

1536:sU/wcxea0CTmPMVWe9VdQkhDIyH1bf/MxTKWmQzcX3VclN:sUIcxeFImPMVWe9VdQgH1bfUxT1mQilY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

etdcxllqrfpos

Attributes

delay
2
install
true
install_file
evert.exe
install_folder
%Temp%
pastebin_config
https://pastebin.com/raw/LwwcrLg4

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

Processes:

resource	yara_rule
behavioral1/memory/1700-1-0x0000000000E50000-0x0000000000E66000-memory.dmp	VenomRAT
\Users\Admin\AppData\Local\Temp\evert.exe	VenomRAT
behavioral1/memory/2800-19-0x0000000001320000-0x0000000001336000-memory.dmp	VenomRAT

Executes dropped EXE 1 IoCs

Processes:

evert.exe

pid process

2800 evert.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2372 cmd.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

4 pastebin.com
5 pastebin.com
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

2440 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

572 schtasks.exe

pid	process
2800	evert.exe

pid	process
2372	cmd.exe

flow	ioc
4	pastebin.com
5	pastebin.com

pid	process
2440	timeout.exe

pid	process
572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exeevert.exe

pid	process
1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe
2800	evert.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exeevert.exe

description	pid	process
Token: SeDebugPrivilege	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
Token: SeDebugPrivilege	2800	evert.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

evert.exe

pid process

2800 evert.exe

pid	process
2800	evert.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.execmd.execmd.exe

description	pid	process	target process
PID 1700 wrote to memory of 2916	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 1700 wrote to memory of 2916	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 1700 wrote to memory of 2916	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 1700 wrote to memory of 2372	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 1700 wrote to memory of 2372	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 1700 wrote to memory of 2372	1700	331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe	cmd.exe
PID 2916 wrote to memory of 572	2916	cmd.exe	schtasks.exe
PID 2916 wrote to memory of 572	2916	cmd.exe	schtasks.exe
PID 2916 wrote to memory of 572	2916	cmd.exe	schtasks.exe
PID 2372 wrote to memory of 2440	2372	cmd.exe	timeout.exe
PID 2372 wrote to memory of 2440	2372	cmd.exe	timeout.exe
PID 2372 wrote to memory of 2440	2372	cmd.exe	timeout.exe
PID 2372 wrote to memory of 2800	2372	cmd.exe	evert.exe
PID 2372 wrote to memory of 2800	2372	cmd.exe	evert.exe
PID 2372 wrote to memory of 2800	2372	cmd.exe	evert.exe

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\331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe
"C:\Users\Admin\AppData\Local\Temp\331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "evert" /tr '"C:\Users\Admin\AppData\Local\Temp\evert.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "evert" /tr '"C:\Users\Admin\AppData\Local\Temp\evert.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:572
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC024.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2440
- - C:\Users\Admin\AppData\Local\Temp\evert.exe
    "C:\Users\Admin\AppData\Local\Temp\evert.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2800

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC024.tmp.bat

Filesize
152B

MD5
fb0492d6c4e2ea52f7495797802d4704

SHA1
e080af51280b9faeaec8d6cb48966f1f567c1ca4

SHA256
dd63cfc3d3a3922ae3c3a4bc9e60e0b3d73139062638e73e45d649a9fd3d80b0

SHA512
fe296cfcc77c8073bde711d897a39fd2d23b7522789724e9d4990852b65f9ab373a93dd97a01f30fb3e3147886fa8c8b98af4aacbf2b1d7290973af6ad8d4c78

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
\Users\Admin\AppData\Local\Temp\evert.exe

Filesize
73KB

MD5
3a3e19b6e7cf03c8c66839db4ebd031f

SHA1
b2a0bec39e05062bb7dd47ee7d57ab9e4ee0f817

SHA256
331f31d4be0ff0f371a8804524359ce455e481c32e00cd75d0c5a7973a17a18b

SHA512
525dc8e997fbc180dc1ac3c137f5c265a7b4268435a83523ef4005de38361e449255f1ea3c5f12fd21673553e0d7738bd72be9034022cbc2d177a2a123fcc9a7

Download Submit
memory/1700-0-0x000007FEF5D63000-0x000007FEF5D64000-memory.dmp

Filesize
4KB

Download
memory/1700-1-0x0000000000E50000-0x0000000000E66000-memory.dmp

Filesize
88KB

Download
memory/1700-3-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/1700-11-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/1700-14-0x000007FEF5D60000-0x000007FEF674C000-memory.dmp

Filesize
9.9MB

Download
memory/2800-19-0x0000000001320000-0x0000000001336000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads