asyncrat | 9fde4361d7beadb8c11afed5b0518211740cef76ea03146e98a8337581e02f7e

General

Target

9c2d4871014553f542534fce03805000N.exe
Size

63KB
MD5

9c2d4871014553f542534fce03805000
SHA1

cd44e0ee979718203d896fcc7dcb5cc5077eb721
SHA256

9fde4361d7beadb8c11afed5b0518211740cef76ea03146e98a8337581e02f7e
SHA512

7d15b22083a0132440297035e5854b318e2aadc615c7959285bc8516292b19f7cd1b062350bde02397e562952ec0910100c4988bec2d92b4ca394b76b1bb7442
SSDEEP

768:PHDvlKazXYN78NwC8A+XuqazcBRL5JTk1+T4KSBGHmDbD/ph0oXOlKYsN3tlSusV:btTXA9dSJYUbdh9OlAF+usdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

Attributes

delay
1
install
true
install_file
Discord.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/zs3YKzJ3

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/0x000c00000001224f-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2976	Discord.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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
2788	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
2784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2312	9c2d4871014553f542534fce03805000N.exe
2312	9c2d4871014553f542534fce03805000N.exe
2312	9c2d4871014553f542534fce03805000N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	9c2d4871014553f542534fce03805000N.exe
Token: SeDebugPrivilege	2976	Discord.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2244	2312	9c2d4871014553f542534fce03805000N.exe	31
PID 2312 wrote to memory of 2244	2312	9c2d4871014553f542534fce03805000N.exe	31
PID 2312 wrote to memory of 2244	2312	9c2d4871014553f542534fce03805000N.exe	31
PID 2312 wrote to memory of 2004	2312	9c2d4871014553f542534fce03805000N.exe	33
PID 2312 wrote to memory of 2004	2312	9c2d4871014553f542534fce03805000N.exe	33
PID 2312 wrote to memory of 2004	2312	9c2d4871014553f542534fce03805000N.exe	33
PID 2244 wrote to memory of 2784	2244	cmd.exe	35
PID 2244 wrote to memory of 2784	2244	cmd.exe	35
PID 2244 wrote to memory of 2784	2244	cmd.exe	35
PID 2004 wrote to memory of 2788	2004	cmd.exe	36
PID 2004 wrote to memory of 2788	2004	cmd.exe	36
PID 2004 wrote to memory of 2788	2004	cmd.exe	36
PID 2004 wrote to memory of 2976	2004	cmd.exe	37
PID 2004 wrote to memory of 2976	2004	cmd.exe	37
PID 2004 wrote to memory of 2976	2004	cmd.exe	37

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\9c2d4871014553f542534fce03805000N.exe
"C:\Users\Admin\AppData\Local\Temp\9c2d4871014553f542534fce03805000N.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2784
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp464.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2788
- - C:\Users\Admin\AppData\Roaming\Discord.exe
    "C:\Users\Admin\AppData\Roaming\Discord.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2976

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp464.tmp.bat

Filesize
150B

MD5
143c2a94403be3225a8da733d2ae3e95

SHA1
c93862db7f3ea54ea90091c6b2934bb372829bed

SHA256
edcf4d5ec6aaf698692963d447926939730b45fdf79ca22c4d22eb14532b2e99

SHA512
b0fd2a5dc4f7b17cb33ef587144cd157135087d904a91457e8567feea0a4af68631bf4089f4fbc4ad0921ae2d83ec022548b5e0564a46fb9c10474997698a4f2

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

Filesize
63KB

MD5
9c2d4871014553f542534fce03805000

SHA1
cd44e0ee979718203d896fcc7dcb5cc5077eb721

SHA256
9fde4361d7beadb8c11afed5b0518211740cef76ea03146e98a8337581e02f7e

SHA512
7d15b22083a0132440297035e5854b318e2aadc615c7959285bc8516292b19f7cd1b062350bde02397e562952ec0910100c4988bec2d92b4ca394b76b1bb7442

Download Submit
memory/2312-0-0x000007FEF5313000-0x000007FEF5314000-memory.dmp

Filesize
4KB

Download
memory/2312-1-0x0000000000B10000-0x0000000000B26000-memory.dmp

Filesize
88KB

Download
memory/2312-2-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2312-3-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2312-13-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-17-0x0000000001140000-0x0000000001156000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads