asyncrat | 31283efe572fee109e86b73f1718e69387fc7ea14e59c8bad26621e599fd050c

General

Target

Vanta.exe
Size

2.5MB
MD5

2b9ec7f6f4cf6b33327e851b1874e314
SHA1

08b7b7bee63c54419d2a0f5ea9ed327c877b2ea9
SHA256

31283efe572fee109e86b73f1718e69387fc7ea14e59c8bad26621e599fd050c
SHA512

89bb9bce6223b4376932ee5fc5d7e06d11f874df73f93a4b11bc347985492efa39f30188e1885e16ce3a3fee6d9ef8a3aceea4eecf9573e0de307ed107317309
SSDEEP

1536:DeQPc25j5BnihYUbfh9pfFeJuMdpqKmY7:DeDY9BnaYUbfNfkvGz

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

2.56.245.187:3232

Mutex

西rXm9HV5FnΙ开YRmi1

Attributes

delay
1
install
true
install_file
svchost.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 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2508-0-0x00000000008D0000-0x00000000008E6000-memory.dmp	asyncrat
behavioral1/files/0x00070000000120b7-17.dat	asyncrat
behavioral1/files/0x00070000000120b7-16.dat	asyncrat
behavioral1/memory/3000-18-0x0000000000DF0000-0x0000000000E06000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3000	svchost.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2712	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2700	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2508	Vanta.exe
2508	Vanta.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3000	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	Vanta.exe
Token: SeDebugPrivilege	3000	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2516	2508	Vanta.exe	28
PID 2508 wrote to memory of 2516	2508	Vanta.exe	28
PID 2508 wrote to memory of 2516	2508	Vanta.exe	28
PID 2508 wrote to memory of 2888	2508	Vanta.exe	29
PID 2508 wrote to memory of 2888	2508	Vanta.exe	29
PID 2508 wrote to memory of 2888	2508	Vanta.exe	29
PID 2516 wrote to memory of 2712	2516	cmd.exe	32
PID 2516 wrote to memory of 2712	2516	cmd.exe	32
PID 2516 wrote to memory of 2712	2516	cmd.exe	32
PID 2888 wrote to memory of 2700	2888	cmd.exe	33
PID 2888 wrote to memory of 2700	2888	cmd.exe	33
PID 2888 wrote to memory of 2700	2888	cmd.exe	33
PID 2888 wrote to memory of 3000	2888	cmd.exe	34
PID 2888 wrote to memory of 3000	2888	cmd.exe	34
PID 2888 wrote to memory of 3000	2888	cmd.exe	34

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\Vanta.exe
"C:\Users\Admin\AppData\Local\Temp\Vanta.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2712
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp90BB.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2888
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2700
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

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\CabBFF7.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp90BB.tmp.bat

Filesize
151B

MD5
6a6f24f84a1293c8ccf36917d5512e83

SHA1
00151880780525ee04583e458059f061e650bfa5

SHA256
2e04d3ae6cf61aa2f14b8b6c88cd134e96f6eb356e570204d032fe0933064685

SHA512
d146f89b0060cbd4e8e19f7119989708f13bf8d7fa41b2653da351b605d9093d3bd5a54fec069bf33f8b381136ac3073a445ca549ddb942b384a3548d138efba

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp90BB.tmp.bat

Filesize
151B

MD5
6a6f24f84a1293c8ccf36917d5512e83

SHA1
00151880780525ee04583e458059f061e650bfa5

SHA256
2e04d3ae6cf61aa2f14b8b6c88cd134e96f6eb356e570204d032fe0933064685

SHA512
d146f89b0060cbd4e8e19f7119989708f13bf8d7fa41b2653da351b605d9093d3bd5a54fec069bf33f8b381136ac3073a445ca549ddb942b384a3548d138efba

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

Filesize
2.5MB

MD5
2b9ec7f6f4cf6b33327e851b1874e314

SHA1
08b7b7bee63c54419d2a0f5ea9ed327c877b2ea9

SHA256
31283efe572fee109e86b73f1718e69387fc7ea14e59c8bad26621e599fd050c

SHA512
89bb9bce6223b4376932ee5fc5d7e06d11f874df73f93a4b11bc347985492efa39f30188e1885e16ce3a3fee6d9ef8a3aceea4eecf9573e0de307ed107317309

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

Filesize
2.5MB

MD5
2b9ec7f6f4cf6b33327e851b1874e314

SHA1
08b7b7bee63c54419d2a0f5ea9ed327c877b2ea9

SHA256
31283efe572fee109e86b73f1718e69387fc7ea14e59c8bad26621e599fd050c

SHA512
89bb9bce6223b4376932ee5fc5d7e06d11f874df73f93a4b11bc347985492efa39f30188e1885e16ce3a3fee6d9ef8a3aceea4eecf9573e0de307ed107317309

Download Submit
memory/2508-12-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

Filesize
9.9MB

Download
memory/2508-3-0x0000000077A10000-0x0000000077BB9000-memory.dmp

Filesize
1.7MB

Download
memory/2508-13-0x0000000077A10000-0x0000000077BB9000-memory.dmp

Filesize
1.7MB

Download
memory/2508-0-0x00000000008D0000-0x00000000008E6000-memory.dmp

Filesize
88KB

Download
memory/2508-2-0x000000001B0F0000-0x000000001B170000-memory.dmp

Filesize
512KB

Download
memory/2508-1-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

Filesize
9.9MB

Download
memory/3000-18-0x0000000000DF0000-0x0000000000E06000-memory.dmp

Filesize
88KB

Download
memory/3000-19-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/3000-20-0x000000001B2A0000-0x000000001B320000-memory.dmp

Filesize
512KB

Download
memory/3000-21-0x0000000077A10000-0x0000000077BB9000-memory.dmp

Filesize
1.7MB

Download
memory/3000-38-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

Filesize
9.9MB

Download
memory/3000-39-0x0000000077A10000-0x0000000077BB9000-memory.dmp

Filesize
1.7MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads