asyncrat | 84912d357a09d920ded8c02f0236676f301bd26722ba6ad92165418c007cda89

General

Target

Infected.exe
Size

63KB
MD5

8b5d09ffbbfc800578025d9aff31ac68
SHA1

cdeea0a7ffb18502d7cae832a13f6294285904ae
SHA256

84912d357a09d920ded8c02f0236676f301bd26722ba6ad92165418c007cda89
SHA512

a22e73029e4387b70c4242a2beef317b96a32996d523a76580914cd5582b3580f0de9d691aa1e688f74042463f7f8c10c2cd5ce3a3d2b178656c0fd84106a589
SSDEEP

768:spDxI6PfZ778/IC8A+X3uazcBRL5JTk1+T4KSBGHmDbD/ph0oX/CLcCaSuEdpqKX:+62ZBwdSJYUbdh9/tiuEdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

mode-clusters.gl.at.ply.gg:36304

Attributes

delay
1
install
true
install_file
Defender.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/0x0009000000023455-10.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

pid	Process
3788	Defender.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

evasion

pid	Process
2832	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
4888	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe
4940	Infected.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	Infected.exe
Token: SeDebugPrivilege	4940	Infected.exe
Token: SeDebugPrivilege	3788	Defender.exe
Token: SeDebugPrivilege	3788	Defender.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 2340	4940	Infected.exe	89
PID 4940 wrote to memory of 2340	4940	Infected.exe	89
PID 4940 wrote to memory of 1020	4940	Infected.exe	91
PID 4940 wrote to memory of 1020	4940	Infected.exe	91
PID 2340 wrote to memory of 4888	2340	cmd.exe	94
PID 2340 wrote to memory of 4888	2340	cmd.exe	94
PID 1020 wrote to memory of 2832	1020	cmd.exe	95
PID 1020 wrote to memory of 2832	1020	cmd.exe	95
PID 1020 wrote to memory of 3788	1020	cmd.exe	96
PID 1020 wrote to memory of 3788	1020	cmd.exe	96

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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Defender" /tr '"C:\Users\Admin\AppData\Roaming\Defender.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Defender" /tr '"C:\Users\Admin\AppData\Roaming\Defender.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4888
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBDE1.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1020
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2832
- - C:\Users\Admin\AppData\Roaming\Defender.exe
    "C:\Users\Admin\AppData\Roaming\Defender.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3788

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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpBDE1.tmp.bat

Filesize
152B

MD5
f47d3f72c34223b0478d580848b72bf4

SHA1
1151c6bf27bb508ba322a0c825341feb0a56490f

SHA256
372b935704cccec8e056568f761382d630b75f1692f661a10096ac909af42b04

SHA512
6a87406389612f46da4dd9913b5e47c4db243eb5eb1b5c2aa549aab77a2888555ad4ffef62266eea7743aa394cf735f8ae724004df0349ec8a87acbc7f923d60

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

Filesize
63KB

MD5
8b5d09ffbbfc800578025d9aff31ac68

SHA1
cdeea0a7ffb18502d7cae832a13f6294285904ae

SHA256
84912d357a09d920ded8c02f0236676f301bd26722ba6ad92165418c007cda89

SHA512
a22e73029e4387b70c4242a2beef317b96a32996d523a76580914cd5582b3580f0de9d691aa1e688f74042463f7f8c10c2cd5ce3a3d2b178656c0fd84106a589

Download Submit
memory/4940-0-0x00007FFDECD83000-0x00007FFDECD85000-memory.dmp

Filesize
8KB

Download
memory/4940-1-0x0000000000DB0000-0x0000000000DC6000-memory.dmp

Filesize
88KB

Download
memory/4940-2-0x00007FFDECD80000-0x00007FFDED841000-memory.dmp

Filesize
10.8MB

Download
memory/4940-7-0x00007FFDECD80000-0x00007FFDED841000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads