asyncrat | 1d7d7e2b90752b9ae4b7cd7db8b62cb0dddee15aa0d6102efd3bb29691ab0fa7

General

Target

Client (3).exe
Size

170KB
MD5

12e347cf5ba0b74e0f93b8759d1d99cb
SHA1

fe0341f382947c8303cdbf400729c441aca184e0
SHA256

1d7d7e2b90752b9ae4b7cd7db8b62cb0dddee15aa0d6102efd3bb29691ab0fa7
SHA512

3ee3d406322b7f0decb06d52951a20f99358be0dd7feeebd4e0784f2a438e33437b806bcadae32827b51da529a17b63fef763932ee571729de740fd06ec62a9e
SSDEEP

3072:JUacxyNl+GPMV3e9VdQsH1bfkBQXv7Jh1fRu1e16kWOIo0tnBBY:J1l+GPMV3aesVb8Bkb139Yo05f

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

147.185.221.21:4449

147.185.221.21:6703

147.185.221.21:5552

Mutex

wvpjsbhmwvbzxetbd

Attributes

delay
1
install
true
install_file
mm.exe
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
behavioral1/files/0x0017000000016d4d-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2744	mm.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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

pid	Process
2936	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
2748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1628	Client (3).exe
1628	Client (3).exe
1628	Client (3).exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe
2744	mm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	Client (3).exe
Token: SeDebugPrivilege	2744	mm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2744	mm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2144	1628	Client (3).exe	30
PID 1628 wrote to memory of 2144	1628	Client (3).exe	30
PID 1628 wrote to memory of 2144	1628	Client (3).exe	30
PID 1628 wrote to memory of 2668	1628	Client (3).exe	31
PID 1628 wrote to memory of 2668	1628	Client (3).exe	31
PID 1628 wrote to memory of 2668	1628	Client (3).exe	31
PID 2668 wrote to memory of 2936	2668	cmd.exe	34
PID 2668 wrote to memory of 2936	2668	cmd.exe	34
PID 2668 wrote to memory of 2936	2668	cmd.exe	34
PID 2144 wrote to memory of 2748	2144	cmd.exe	35
PID 2144 wrote to memory of 2748	2144	cmd.exe	35
PID 2144 wrote to memory of 2748	2144	cmd.exe	35
PID 2668 wrote to memory of 2744	2668	cmd.exe	36
PID 2668 wrote to memory of 2744	2668	cmd.exe	36
PID 2668 wrote to memory of 2744	2668	cmd.exe	36

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\Client (3).exe
"C:\Users\Admin\AppData\Local\Temp\Client (3).exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mm" /tr '"C:\Users\Admin\AppData\Roaming\mm.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2144
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mm" /tr '"C:\Users\Admin\AppData\Roaming\mm.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2748
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp9157.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2936
- - C:\Users\Admin\AppData\Roaming\mm.exe
    "C:\Users\Admin\AppData\Roaming\mm.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2744

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

2

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\CabAA93.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3BAE.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9157.tmp.bat

Filesize
146B

MD5
6daadc6ea56048ac481f07325a1f9347

SHA1
f976613ab4c569411df7398c697d5b176d0a914b

SHA256
81c4ebb2f2c879baeeca7870c99b606cda221ed7de3bc3d24daf6d4ae9f69a7c

SHA512
8b8da41ac60d0ff153a0b5f657ceb1b6892dca7cc2e33e66d5cfe2a271446e9cfde555f1039a867ac87f2a218e04cbd8de11e80015ed279c62c0c09f449f5859

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Admin\AppData\Roaming\mm.exe

Filesize
170KB

MD5
12e347cf5ba0b74e0f93b8759d1d99cb

SHA1
fe0341f382947c8303cdbf400729c441aca184e0

SHA256
1d7d7e2b90752b9ae4b7cd7db8b62cb0dddee15aa0d6102efd3bb29691ab0fa7

SHA512
3ee3d406322b7f0decb06d52951a20f99358be0dd7feeebd4e0784f2a438e33437b806bcadae32827b51da529a17b63fef763932ee571729de740fd06ec62a9e

Download Submit
memory/1628-0-0x000007FEF5003000-0x000007FEF5004000-memory.dmp

Filesize
4KB

Download
memory/1628-1-0x0000000001060000-0x0000000001090000-memory.dmp

Filesize
192KB

Download
memory/1628-3-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/1628-11-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/1628-14-0x000007FEF5000000-0x000007FEF59EC000-memory.dmp

Filesize
9.9MB

Download
memory/2744-18-0x0000000000200000-0x0000000000230000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads