asyncrat | 5ecc27efab5b743099f8410fe22557915fb6c28f201692077c7abd3676130587

Analysis

max time kernel
148s
max time network
124s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
22/08/2023, 01:47

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General

Target
d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe
Size 48KB
Sample230822-b71deaba8s
SHA256 d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc
MD5 ac1f2fe1cd36ff5c4c6bfea58a6a3959
SHA1 8a6290c066c99a68bceaa16200c70c344e0f2f7d
SHA512 68bc0f18988162a819995a5c291739e09092cb8e22e040c9b5983cada9703d9e865ff0790b940ecda5e77520eabdff97e16fd9f9f4036cfb922558048e9fe3c4
SSDEEP 768:kyF603LoILkWAt+jiiLFxh63BOih8YbIgeyVrLcys1NfvEgK/JHZVc6KN:kyF6RtiRxkhzbftVrZs1NfnkJHZVclN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

127.0.0.1:8848
127.0.0.1:8858
thwit.ddns.net:8848
thwit.ddns.net:8858

Mutex

DcRatMutex_qwqdnachun

Attributes

delay
1
install
true
install_file
..\..\..\..\tmp\StartService.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 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2300-54-0x0000000000FC0000-0x0000000000FD2000-memory.dmp	asyncrat
behavioral1/memory/2300-55-0x00000000004E0000-0x0000000000560000-memory.dmp	asyncrat

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
2076	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe
2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 1872	2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe	28
PID 2300 wrote to memory of 1872	2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe	28
PID 2300 wrote to memory of 1872	2300	d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe	28
PID 1872 wrote to memory of 2076	1872	cmd.exe	30
PID 1872 wrote to memory of 2076	1872	cmd.exe	30
PID 1872 wrote to memory of 2076	1872	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe
"C:\Users\Admin\AppData\Local\Temp\d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "StartService" /tr '"C:\tmp\StartService.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "StartService" /tr '"C:\tmp\StartService.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2300-53-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

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memory/2300-54-0x0000000000FC0000-0x0000000000FD2000-memory.dmp

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memory/2300-55-0x00000000004E0000-0x0000000000560000-memory.dmp

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memory/2300-56-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Download

memory/2300-57-0x00000000004E0000-0x0000000000560000-memory.dmp

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