asyncrat | a7b2894e48d292b192b8f33a3968c9b2c42e215b18d0b6ec91e4412d319f5608

General

Target

WaveInstaller.exe
Size

249KB
MD5

247af4e0a1a0d20bb625ece6439ee87d
SHA1

28ad251bb0db405924834583c216db028373c681
SHA256

a7b2894e48d292b192b8f33a3968c9b2c42e215b18d0b6ec91e4412d319f5608
SHA512

b4c87d609821173559cf5fcef7e2dfeb444a63f0222367e28bfd83c2f29ff33d0588fa6b4dd74402ccc502dd97ea4f6f489295d186ca3add5d5e40876c616142
SSDEEP

3072:+/H6zbxSl+GLAsNeDF5nI0PGIj9lua/Obw0hFv2PCWpIdNrY:yazbYlx0sNOBTunbw0/5Wpi

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

https://ooo.fluffiflower.xyz/:8848

ooo.fluffiflower.xyz:8848

2.132.191.110:8848

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
Explorer.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

resource	yara_rule
behavioral1/files/0x00090000000120f1-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2964	Explorer.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
2880	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
2844	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1968	WaveInstaller.exe
1968	WaveInstaller.exe
1968	WaveInstaller.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	WaveInstaller.exe
Token: SeDebugPrivilege	2964	Explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2760	1968	WaveInstaller.exe	30
PID 1968 wrote to memory of 2760	1968	WaveInstaller.exe	30
PID 1968 wrote to memory of 2760	1968	WaveInstaller.exe	30
PID 1968 wrote to memory of 2764	1968	WaveInstaller.exe	32
PID 1968 wrote to memory of 2764	1968	WaveInstaller.exe	32
PID 1968 wrote to memory of 2764	1968	WaveInstaller.exe	32
PID 2760 wrote to memory of 2844	2760	cmd.exe	34
PID 2760 wrote to memory of 2844	2760	cmd.exe	34
PID 2760 wrote to memory of 2844	2760	cmd.exe	34
PID 2764 wrote to memory of 2880	2764	cmd.exe	35
PID 2764 wrote to memory of 2880	2764	cmd.exe	35
PID 2764 wrote to memory of 2880	2764	cmd.exe	35
PID 2764 wrote to memory of 2964	2764	cmd.exe	36
PID 2764 wrote to memory of 2964	2764	cmd.exe	36
PID 2764 wrote to memory of 2964	2764	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\WaveInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\WaveInstaller.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Explorer" /tr '"C:\Users\Admin\AppData\Roaming\Explorer.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Explorer" /tr '"C:\Users\Admin\AppData\Roaming\Explorer.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2844
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8CB5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2880
- - C:\Users\Admin\AppData\Roaming\Explorer.exe
    "C:\Users\Admin\AppData\Roaming\Explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2964

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8CB5.tmp.bat

Filesize
152B

MD5
5150e1f5d70ebcce39f8048495a3615c

SHA1
18a15424e7aa809623fb4e270a97252ac76fbc5c

SHA256
9d6d4208ce08b9fe37c4907f96de43bbd4e44659c4dfc3c0c477fb43d849ecf4

SHA512
417face5719817e4f4d861391470e958a689baaeb22bb0be66d79ba9f933868791f4038fc668456d4199d186974794b4b0b955136e14bc84e695e544256ec8bf

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

Filesize
249KB

MD5
247af4e0a1a0d20bb625ece6439ee87d

SHA1
28ad251bb0db405924834583c216db028373c681

SHA256
a7b2894e48d292b192b8f33a3968c9b2c42e215b18d0b6ec91e4412d319f5608

SHA512
b4c87d609821173559cf5fcef7e2dfeb444a63f0222367e28bfd83c2f29ff33d0588fa6b4dd74402ccc502dd97ea4f6f489295d186ca3add5d5e40876c616142

Download Submit
memory/1968-0-0x000007FEF5103000-0x000007FEF5104000-memory.dmp

Filesize
4KB

Download
memory/1968-1-0x0000000000B10000-0x0000000000B54000-memory.dmp

Filesize
272KB

Download
memory/1968-2-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

Filesize
9.9MB

Download
memory/1968-11-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

Filesize
9.9MB

Download
memory/2964-16-0x00000000001C0000-0x0000000000204000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads