asyncrat | f3aa2b23a67f4dbcce9fff7bb084e70127e3e0c4f2ab0f605487c570a7408960

Analysis

max time kernel
145s
max time network
152s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:12

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General

Target

6fe5c591a1fbdd543b030912700b164a.exe
Size

47KB
MD5

6fe5c591a1fbdd543b030912700b164a
SHA1

9667d52bec1f5257efb9b42b20a53500bd307aff
SHA256

5fee1b46ab28ddd6ac8f46e819b5340e10084660686f0d0e415ab4a7105c465a
SHA512

a3215288599e11f40e96fd4c63d14388e1c061cdbbe3d5e9e80c3d7e083a3e700c51d35058785534dd3d510072d09086863ef04534aac184765a7acdcc5b1a53
SSDEEP

768:QSQcFILSC+e+bibovnBIPRHoibzYbyged3FyGMa92w10AHEgK/J7BpqKYhY7:QSQMyUnB4Fncb12YGMI2q0AfkJ7BpqKX

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

38.49.43.182:8848

Mutex

DcRatMutex

Attributes

delay
1
install
true
install_file
svchostdc.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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral31/files/0x00070000000120ea-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2832	svchostdc.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

defense_evasion

pid	Process
2780	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
2976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2220	6fe5c591a1fbdd543b030912700b164a.exe
2220	6fe5c591a1fbdd543b030912700b164a.exe
2220	6fe5c591a1fbdd543b030912700b164a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	6fe5c591a1fbdd543b030912700b164a.exe
Token: SeDebugPrivilege	2832	svchostdc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2204	2220	6fe5c591a1fbdd543b030912700b164a.exe	30
PID 2220 wrote to memory of 2204	2220	6fe5c591a1fbdd543b030912700b164a.exe	30
PID 2220 wrote to memory of 2204	2220	6fe5c591a1fbdd543b030912700b164a.exe	30
PID 2220 wrote to memory of 1252	2220	6fe5c591a1fbdd543b030912700b164a.exe	32
PID 2220 wrote to memory of 1252	2220	6fe5c591a1fbdd543b030912700b164a.exe	32
PID 2220 wrote to memory of 1252	2220	6fe5c591a1fbdd543b030912700b164a.exe	32
PID 2204 wrote to memory of 2976	2204	cmd.exe	34
PID 2204 wrote to memory of 2976	2204	cmd.exe	34
PID 2204 wrote to memory of 2976	2204	cmd.exe	34
PID 1252 wrote to memory of 2780	1252	cmd.exe	35
PID 1252 wrote to memory of 2780	1252	cmd.exe	35
PID 1252 wrote to memory of 2780	1252	cmd.exe	35
PID 1252 wrote to memory of 2832	1252	cmd.exe	36
PID 1252 wrote to memory of 2832	1252	cmd.exe	36
PID 1252 wrote to memory of 2832	1252	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\6fe5c591a1fbdd543b030912700b164a.exe
"C:\Users\Admin\AppData\Local\Temp\6fe5c591a1fbdd543b030912700b164a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchostdc" /tr '"C:\Users\Admin\AppData\Roaming\svchostdc.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchostdc" /tr '"C:\Users\Admin\AppData\Roaming\svchostdc.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2976
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC46.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1252
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2780
- - C:\Users\Admin\AppData\Roaming\svchostdc.exe
    "C:\Users\Admin\AppData\Roaming\svchostdc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAC46.tmp.bat

Filesize
153B

MD5
366122d3d4cfd8d52e5d3cac30daaef0

SHA1
91ecca1ab2d85e9872112ece95e108f11e4d5560

SHA256
446a7aaf49dcc9507cabaa20386719c511cc7abaca1bba3cddbeb50636ade119

SHA512
f48ff2fa80b551baa1e16d80886fcc04c936567c3d2165c1eb1160322055b9bacae47bb2ad834a4bf5c1560c92edfa934a4574082f8ed9cb209828e466374b3e

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

Filesize
47KB

MD5
6fe5c591a1fbdd543b030912700b164a

SHA1
9667d52bec1f5257efb9b42b20a53500bd307aff

SHA256
5fee1b46ab28ddd6ac8f46e819b5340e10084660686f0d0e415ab4a7105c465a

SHA512
a3215288599e11f40e96fd4c63d14388e1c061cdbbe3d5e9e80c3d7e083a3e700c51d35058785534dd3d510072d09086863ef04534aac184765a7acdcc5b1a53

Download Submit
memory/2220-0-0x000007FEF55B3000-0x000007FEF55B4000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000000020000-0x0000000000032000-memory.dmp

Filesize
72KB

Download
memory/2220-2-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2220-12-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-16-0x00000000000B0000-0x00000000000C2000-memory.dmp

Filesize
72KB

Download