asyncrat | 2eb914fb9a98ac7253618469a7a84c2435412e14fba4807115ec41bb91212a3b

General

Target

Infected.exe
Size

63KB
MD5

aeb5089987b93971f679821bd94cab7d
SHA1

0573200e114d930c8f29dae945c63bfc4007f098
SHA256

2eb914fb9a98ac7253618469a7a84c2435412e14fba4807115ec41bb91212a3b
SHA512

58129d8d9c3f0d7438565ae022ff0e7750dba11e2acdc660261805ab0cbdf02fba2796790b8032b8e9d7c4b7e260f9064fb4c0483d69f7f95db0ab2a1e570a99
SSDEEP

768:N1vwJdXHF378LAC8A+XP6azcBRL5JTk1+T4KSBGHmDbD/ph0oXIaNGNUSuIdpqKX:TUFB8dSJYUbdh9HNGNTuIdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

ilovabby.ddns.net:3232

Attributes

delay
2
install
true
install_file
windowsupdater.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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\windowsupdater.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

windowsupdater.exe

pid process

2684 windowsupdater.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

Processes:

schtasks.exe

pid process

2716 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2732 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Infected.exe

pid process

568 Infected.exe
568 Infected.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Infected.exewindowsupdater.exe

description pid process

Token: SeDebugPrivilege 568 Infected.exe
Token: SeDebugPrivilege 2684 windowsupdater.exe

pid	process
2684	windowsupdater.exe

pid	process
2716	schtasks.exe

pid	process
2732	timeout.exe

pid	process
568	Infected.exe
568	Infected.exe

description	pid	process
Token: SeDebugPrivilege	568	Infected.exe
Token: SeDebugPrivilege	2684	windowsupdater.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	process	target process
PID 568 wrote to memory of 1580	568	Infected.exe	cmd.exe
PID 568 wrote to memory of 1580	568	Infected.exe	cmd.exe
PID 568 wrote to memory of 1580	568	Infected.exe	cmd.exe
PID 568 wrote to memory of 1516	568	Infected.exe	cmd.exe
PID 568 wrote to memory of 1516	568	Infected.exe	cmd.exe
PID 568 wrote to memory of 1516	568	Infected.exe	cmd.exe
PID 1580 wrote to memory of 2716	1580	cmd.exe	schtasks.exe
PID 1580 wrote to memory of 2716	1580	cmd.exe	schtasks.exe
PID 1580 wrote to memory of 2716	1580	cmd.exe	schtasks.exe
PID 1516 wrote to memory of 2732	1516	cmd.exe	timeout.exe
PID 1516 wrote to memory of 2732	1516	cmd.exe	timeout.exe
PID 1516 wrote to memory of 2732	1516	cmd.exe	timeout.exe
PID 1516 wrote to memory of 2684	1516	cmd.exe	windowsupdater.exe
PID 1516 wrote to memory of 2684	1516	cmd.exe	windowsupdater.exe
PID 1516 wrote to memory of 2684	1516	cmd.exe	windowsupdater.exe

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:568
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windowsupdater" /tr '"C:\Users\Admin\AppData\Roaming\windowsupdater.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windowsupdater" /tr '"C:\Users\Admin\AppData\Roaming\windowsupdater.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2716
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1278.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2732
- - C:\Users\Admin\AppData\Roaming\windowsupdater.exe
    "C:\Users\Admin\AppData\Roaming\windowsupdater.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2684

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\tmp1278.tmp.bat

Filesize
158B

MD5
006527bd83f7c5ddc4bd9715e3c577c0

SHA1
c153b3fb2065ea63161b6eedf1369f7cc28ad952

SHA256
6c3110726f5c8f5ecc768aad2ce690e110e4324f7973c2136ef972849620a264

SHA512
bf31806047129552a0271625445c1ac6e01b812d5c75282030928adf789cfed8ed11a6c3eabef36d6bb52d5478ef314d0935a6470db41678a3fccf77c106650e

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

Filesize
63KB

MD5
aeb5089987b93971f679821bd94cab7d

SHA1
0573200e114d930c8f29dae945c63bfc4007f098

SHA256
2eb914fb9a98ac7253618469a7a84c2435412e14fba4807115ec41bb91212a3b

SHA512
58129d8d9c3f0d7438565ae022ff0e7750dba11e2acdc660261805ab0cbdf02fba2796790b8032b8e9d7c4b7e260f9064fb4c0483d69f7f95db0ab2a1e570a99

Download Submit
memory/568-0-0x000007FEF51F3000-0x000007FEF51F4000-memory.dmp

Filesize
4KB

Download
memory/568-1-0x0000000000B00000-0x0000000000B16000-memory.dmp

Filesize
88KB

Download
memory/568-2-0x000007FEF51F0000-0x000007FEF5BDC000-memory.dmp

Filesize
9.9MB

Download
memory/568-3-0x000007FEF51F0000-0x000007FEF5BDC000-memory.dmp

Filesize
9.9MB

Download
memory/568-13-0x000007FEF51F0000-0x000007FEF5BDC000-memory.dmp

Filesize
9.9MB

Download
memory/2684-17-0x0000000000360000-0x0000000000376000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads