asyncrat | fd04c8839b0eb04ec31da085482305d55e7d8c7f8da9ea44137580d9bbe1dc70

General

Target

Vanta-Loader.exe
Size

3.6MB
MD5

1deafd22f6f06878aa0e0dc73a759374
SHA1

3052556ffd492d726c245cb96cbab61799824985
SHA256

fd04c8839b0eb04ec31da085482305d55e7d8c7f8da9ea44137580d9bbe1dc70
SHA512

4699d89235899e4af2b2f2db1e458fb94e34e06ad8ea0e6583a9dfebc36e2d0d65bbdf71bb0fb7a96569a6b4a0a226928ff7f74c233def450055a3f46337d151
SSDEEP

768:SuY6LVcsTPq781wC8A+Xj2EqLDkvB3E1+T4jSBGHmDbDFph8oXZYtRjPKUSu0dph:7eQPcqlsxEsYUbPhFGPPKTu0dpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

31.214.240.57:3232

Mutex

西d艾zש吾伊TnA35Ι斯ΑΖاaukqG

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/3032-0-0x0000000000D40000-0x0000000000D56000-memory.dmp	asyncrat
behavioral1/files/0x000e00000001201d-17.dat	asyncrat
behavioral1/files/0x000e00000001201d-16.dat	asyncrat
behavioral1/memory/2776-18-0x0000000000D70000-0x0000000000D86000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2776	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
2840	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2700	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3032	Vanta-Loader.exe
3032	Vanta-Loader.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	Vanta-Loader.exe
Token: SeDebugPrivilege	2776	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2256	3032	Vanta-Loader.exe	28
PID 3032 wrote to memory of 2256	3032	Vanta-Loader.exe	28
PID 3032 wrote to memory of 2256	3032	Vanta-Loader.exe	28
PID 3032 wrote to memory of 2856	3032	Vanta-Loader.exe	30
PID 3032 wrote to memory of 2856	3032	Vanta-Loader.exe	30
PID 3032 wrote to memory of 2856	3032	Vanta-Loader.exe	30
PID 2256 wrote to memory of 2840	2256	cmd.exe	31
PID 2256 wrote to memory of 2840	2256	cmd.exe	31
PID 2256 wrote to memory of 2840	2256	cmd.exe	31
PID 2856 wrote to memory of 2700	2856	cmd.exe	33
PID 2856 wrote to memory of 2700	2856	cmd.exe	33
PID 2856 wrote to memory of 2700	2856	cmd.exe	33
PID 2856 wrote to memory of 2776	2856	cmd.exe	34
PID 2856 wrote to memory of 2776	2856	cmd.exe	34
PID 2856 wrote to memory of 2776	2856	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-Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Vanta-Loader.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032
- 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:2256
- - 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:2840
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4F58.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2856
- - 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 use of AdjustPrivilegeToken
    PID:2776

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\Cab64CD.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4F58.tmp.bat

Filesize
151B

MD5
9e72fb859f82a8eaa2d205bafcc83b10

SHA1
5f0b596d5a9d89b79e2da901de90ea2774ec397a

SHA256
5ed90631ea65b5b6d7898c42c3b1dc5fbdde740ff145f73977a5f62660388326

SHA512
b16357d10efd43dac072dd5edd73f322718c9079bdb5a332b5f3832aba6f0693203990bb32555773fe7ea4b003d1152d446e28aa6bfb0b7a0bd2a6d29953b10f

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4F58.tmp.bat

Filesize
151B

MD5
9e72fb859f82a8eaa2d205bafcc83b10

SHA1
5f0b596d5a9d89b79e2da901de90ea2774ec397a

SHA256
5ed90631ea65b5b6d7898c42c3b1dc5fbdde740ff145f73977a5f62660388326

SHA512
b16357d10efd43dac072dd5edd73f322718c9079bdb5a332b5f3832aba6f0693203990bb32555773fe7ea4b003d1152d446e28aa6bfb0b7a0bd2a6d29953b10f

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

Filesize
3.6MB

MD5
1deafd22f6f06878aa0e0dc73a759374

SHA1
3052556ffd492d726c245cb96cbab61799824985

SHA256
fd04c8839b0eb04ec31da085482305d55e7d8c7f8da9ea44137580d9bbe1dc70

SHA512
4699d89235899e4af2b2f2db1e458fb94e34e06ad8ea0e6583a9dfebc36e2d0d65bbdf71bb0fb7a96569a6b4a0a226928ff7f74c233def450055a3f46337d151

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

Filesize
3.6MB

MD5
1deafd22f6f06878aa0e0dc73a759374

SHA1
3052556ffd492d726c245cb96cbab61799824985

SHA256
fd04c8839b0eb04ec31da085482305d55e7d8c7f8da9ea44137580d9bbe1dc70

SHA512
4699d89235899e4af2b2f2db1e458fb94e34e06ad8ea0e6583a9dfebc36e2d0d65bbdf71bb0fb7a96569a6b4a0a226928ff7f74c233def450055a3f46337d151

Download Submit
memory/2776-20-0x000000001B110000-0x000000001B190000-memory.dmp

Filesize
512KB

Download
memory/2776-40-0x00000000774B0000-0x0000000077659000-memory.dmp

Filesize
1.7MB

Download
memory/2776-39-0x000000001B110000-0x000000001B190000-memory.dmp

Filesize
512KB

Download
memory/2776-38-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

Filesize
9.9MB

Download
memory/2776-21-0x00000000774B0000-0x0000000077659000-memory.dmp

Filesize
1.7MB

Download
memory/2776-18-0x0000000000D70000-0x0000000000D86000-memory.dmp

Filesize
88KB

Download
memory/2776-19-0x000007FEF4E60000-0x000007FEF584C000-memory.dmp

Filesize
9.9MB

Download
memory/3032-0-0x0000000000D40000-0x0000000000D56000-memory.dmp

Filesize
88KB

Download
memory/3032-2-0x0000000000410000-0x0000000000490000-memory.dmp

Filesize
512KB

Download
memory/3032-1-0x000007FEF5850000-0x000007FEF623C000-memory.dmp

Filesize
9.9MB

Download
memory/3032-3-0x00000000774B0000-0x0000000077659000-memory.dmp

Filesize
1.7MB

Download
memory/3032-14-0x00000000774B0000-0x0000000077659000-memory.dmp

Filesize
1.7MB

Download
memory/3032-13-0x000007FEF5850000-0x000007FEF623C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads