asyncrat | 685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6

General

Target

Infected.exe
Size

63KB
MD5

033a95f31df91d6c986eb0351a7053b4
SHA1

c8945b0f9900fa37e654681e9e4a34aa4cb01e42
SHA256

685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6
SHA512

3c14096e54b3de9758f5a6aa2de369967aff87ad4e3a8f525fe2469440581011fefb10edfbd3c7088f5a93d9638a656d57c2feb6c14b7ab190230f07fa665795
SSDEEP

768:Uk/9PXn1w787gC8A+XvqazcBRL5JTk1+T4KSBGHmDbD/ph0oXPVTJ+FpSungpqKX:hR1gMdSJYUbdh9PdXungpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

default-hepatitis.gl.at.ply.gg:10820

Attributes

delay
1
install
true
install_file
system.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
behavioral1/files/0x0008000000014c66-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1452	system.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
2412	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
2300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2404	Infected.exe
2404	Infected.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	Infected.exe
Token: SeDebugPrivilege	1452	system.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2464	2404	Infected.exe	28
PID 2404 wrote to memory of 2464	2404	Infected.exe	28
PID 2404 wrote to memory of 2464	2404	Infected.exe	28
PID 2404 wrote to memory of 2964	2404	Infected.exe	30
PID 2404 wrote to memory of 2964	2404	Infected.exe	30
PID 2404 wrote to memory of 2964	2404	Infected.exe	30
PID 2464 wrote to memory of 2300	2464	cmd.exe	32
PID 2464 wrote to memory of 2300	2464	cmd.exe	32
PID 2464 wrote to memory of 2300	2464	cmd.exe	32
PID 2964 wrote to memory of 2412	2964	cmd.exe	33
PID 2964 wrote to memory of 2412	2964	cmd.exe	33
PID 2964 wrote to memory of 2412	2964	cmd.exe	33
PID 2964 wrote to memory of 1452	2964	cmd.exe	34
PID 2964 wrote to memory of 1452	2964	cmd.exe	34
PID 2964 wrote to memory of 1452	2964	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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "system" /tr '"C:\Users\Admin\AppData\Roaming\system.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2464
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "system" /tr '"C:\Users\Admin\AppData\Roaming\system.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2300
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA737.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2412
- - C:\Users\Admin\AppData\Roaming\system.exe
    "C:\Users\Admin\AppData\Roaming\system.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1452

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

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\tmpA737.tmp.bat

Filesize
150B

MD5
6cf7fc0de2239b20a0dade5f916c8804

SHA1
4ed9caf3f2463d745b45586faebe15e5927e45cf

SHA256
f87532d273ca5410627f6ac0e47f69897e63b76ac048d60791795b9c2785b053

SHA512
62172ec3102a76b46cff155c4d2ed72a6384bdf1debfab7777247f3d5962378207beb6545439bcdff5660e9df9289aedcde0982d3baaa08804ff9a1223778cee

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

Filesize
63KB

MD5
033a95f31df91d6c986eb0351a7053b4

SHA1
c8945b0f9900fa37e654681e9e4a34aa4cb01e42

SHA256
685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6

SHA512
3c14096e54b3de9758f5a6aa2de369967aff87ad4e3a8f525fe2469440581011fefb10edfbd3c7088f5a93d9638a656d57c2feb6c14b7ab190230f07fa665795

Download Submit
memory/1452-17-0x00000000001D0000-0x00000000001E6000-memory.dmp

Filesize
88KB

Download
memory/2404-0-0x000007FEF5FB3000-0x000007FEF5FB4000-memory.dmp

Filesize
4KB

Download
memory/2404-1-0x0000000000F30000-0x0000000000F46000-memory.dmp

Filesize
88KB

Download
memory/2404-2-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-3-0x000007FEF5FB0000-0x000007FEF699C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-12-0x000007FEF5FB0000-0x000007FEF699C000-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