asyncrat | 4fcbfbd8040986b39b1d7661adf8cc6451c24aa4b607b9212793f77526ce79af

General

Target

Discord.exe
Size

71KB
MD5

045c870906097c7aa54d257382471115
SHA1

bea629242fb4facf3fd1de1f86ce3e2811777520
SHA256

025ce30902b4a9cade0381c523ac27d67c0598743ba2675e7efd3669ec8ff141
SHA512

cf89a37c99c52db276233c0371952c5595448299f7d3d0372f456f5c1dbe3037a2e14d61ef98685739fb71f728879169247afcc9e1da549d31b5bb52407c785c
SSDEEP

768:gucNE9IL2C6y+DiPdPiBLVisiW0zUYbhge7tkeGqm77rvEgK/Jrpp6uB3+Vc6KN:Ncy2RCUe0zbbOzeGqCnkJrpp66+VclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

185.65.134.165:55160

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
svchost.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/0x000a00000001202c-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2816	svchost.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
2388	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
2660	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1944	Discord.exe
1944	Discord.exe
1944	Discord.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	Discord.exe
Token: SeDebugPrivilege	2816	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1324	1944	Discord.exe	30
PID 1944 wrote to memory of 1324	1944	Discord.exe	30
PID 1944 wrote to memory of 1324	1944	Discord.exe	30
PID 1944 wrote to memory of 2492	1944	Discord.exe	32
PID 1944 wrote to memory of 2492	1944	Discord.exe	32
PID 1944 wrote to memory of 2492	1944	Discord.exe	32
PID 1324 wrote to memory of 2660	1324	cmd.exe	34
PID 1324 wrote to memory of 2660	1324	cmd.exe	34
PID 1324 wrote to memory of 2660	1324	cmd.exe	34
PID 2492 wrote to memory of 2388	2492	cmd.exe	35
PID 2492 wrote to memory of 2388	2492	cmd.exe	35
PID 2492 wrote to memory of 2388	2492	cmd.exe	35
PID 2492 wrote to memory of 2816	2492	cmd.exe	36
PID 2492 wrote to memory of 2816	2492	cmd.exe	36
PID 2492 wrote to memory of 2816	2492	cmd.exe	36

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\Discord.exe
"C:\Users\Admin\AppData\Local\Temp\Discord.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2660
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpABD9.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2388
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2816

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\tmpABD9.tmp.bat

Filesize
151B

MD5
b7d057262941a880bf155a2650642c05

SHA1
f926fcc0852e52a1ad9a48bc25ed1921fc7c924d

SHA256
d2802169375af9dfabc768d614171c08918f645b6069eb7d6965954d2351d574

SHA512
ec7b7befac22689bbbd3090d849ed03e981316759894d25f4ba2ea28b27d80e445cc4df3d99de41a6af621fda2aaf53d11a9d07673b6d18b95876a0e9461e634

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

Filesize
71KB

MD5
045c870906097c7aa54d257382471115

SHA1
bea629242fb4facf3fd1de1f86ce3e2811777520

SHA256
025ce30902b4a9cade0381c523ac27d67c0598743ba2675e7efd3669ec8ff141

SHA512
cf89a37c99c52db276233c0371952c5595448299f7d3d0372f456f5c1dbe3037a2e14d61ef98685739fb71f728879169247afcc9e1da549d31b5bb52407c785c

Download Submit
memory/1944-0-0x000007FEF4E33000-0x000007FEF4E34000-memory.dmp

Filesize
4KB

Download
memory/1944-1-0x0000000000850000-0x0000000000868000-memory.dmp

Filesize
96KB

Download
memory/1944-2-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/1944-12-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-16-0x0000000000C50000-0x0000000000C68000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads