asyncrat | 69f92526cfccfbd89638d8659be33461076f6fb97cf4c8112146384d95b9d6cc

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 19:43

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General

Target

Infected.exe
Size

63KB
MD5

585eefe97073fb646d9e3164a5c7749b
SHA1

185d4ba47e76c2c96860512adfab40a1abd2ff84
SHA256

69f92526cfccfbd89638d8659be33461076f6fb97cf4c8112146384d95b9d6cc
SHA512

f9551fc6c286d8f497f8b26f3a50d6fff6ece3d159f6bf674c9fda204b2be62e316baf4218ae7032c25504bf821bf1a8a51ab935cea1e02910694a90f519e77f
SSDEEP

768:Ek/9PXn1w787gC8A+XvqazcBRL5JTk1+T4KSBGHmDbD/ph0oXRWVUwsSutkpqKYC:RR1gMdSJYUbdh9KlrutkpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:123

127.0.0.1:80

1.2.3.4:123

1.2.3.4:80

Attributes

delay
1
install
true
install_file
loader.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

Processes:

resource	yara_rule
behavioral1/files/0x0007000000012117-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

loader.exe

pid	Process
2244	loader.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

Processes:

timeout.exe

pid	Process
2196	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

Processes:

schtasks.exe

pid	Process
2496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exeloader.exe

pid	Process
2272	Infected.exe
2272	Infected.exe
2272	Infected.exe
2272	Infected.exe
2272	Infected.exe
2272	Infected.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe
2244	loader.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Infected.exeloader.exe

description	pid	Process
Token: SeDebugPrivilege	2272	Infected.exe
Token: SeDebugPrivilege	2272	Infected.exe
Token: SeDebugPrivilege	2244	loader.exe
Token: SeDebugPrivilege	2244	loader.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	Process	procid_target
PID 2272 wrote to memory of 2200	2272	Infected.exe	30
PID 2272 wrote to memory of 2200	2272	Infected.exe	30
PID 2272 wrote to memory of 2200	2272	Infected.exe	30
PID 2272 wrote to memory of 2020	2272	Infected.exe	32
PID 2272 wrote to memory of 2020	2272	Infected.exe	32
PID 2272 wrote to memory of 2020	2272	Infected.exe	32
PID 2200 wrote to memory of 2496	2200	cmd.exe	33
PID 2200 wrote to memory of 2496	2200	cmd.exe	33
PID 2200 wrote to memory of 2496	2200	cmd.exe	33
PID 2020 wrote to memory of 2196	2020	cmd.exe	35
PID 2020 wrote to memory of 2196	2020	cmd.exe	35
PID 2020 wrote to memory of 2196	2020	cmd.exe	35
PID 2020 wrote to memory of 2244	2020	cmd.exe	37
PID 2020 wrote to memory of 2244	2020	cmd.exe	37
PID 2020 wrote to memory of 2244	2020	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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "loader" /tr '"C:\Users\Admin\AppData\Roaming\loader.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "loader" /tr '"C:\Users\Admin\AppData\Roaming\loader.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2496
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC9A5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2196
- - C:\Users\Admin\AppData\Roaming\loader.exe
    "C:\Users\Admin\AppData\Roaming\loader.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC9A5.tmp.bat

Filesize
150B

MD5
2f504721b41b8aec3008595e0578f4b5

SHA1
8845abd2dbc1215ee9afb15c3543a4d47a1fbfa6

SHA256
e4f8c15698301943d0561ae1d173d04e1d87d54272700bfa4c4258ce790c9f4e

SHA512
b4157b0309d4eaab1d31bbd6146be2a8686df4908136ef636f4c6c994814f4e9f04c51eaf282868c0dc20faf9b8c0ba1b8e7227538651687da34d5d4cb01f723

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

Filesize
63KB

MD5
585eefe97073fb646d9e3164a5c7749b

SHA1
185d4ba47e76c2c96860512adfab40a1abd2ff84

SHA256
69f92526cfccfbd89638d8659be33461076f6fb97cf4c8112146384d95b9d6cc

SHA512
f9551fc6c286d8f497f8b26f3a50d6fff6ece3d159f6bf674c9fda204b2be62e316baf4218ae7032c25504bf821bf1a8a51ab935cea1e02910694a90f519e77f

Download Submit
memory/2244-17-0x0000000000E80000-0x0000000000E96000-memory.dmp

Filesize
88KB

Download
memory/2272-0-0x000007FEF5EF3000-0x000007FEF5EF4000-memory.dmp

Filesize
4KB

Download
memory/2272-1-0x0000000000EF0000-0x0000000000F06000-memory.dmp

Filesize
88KB

Download
memory/2272-2-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2272-3-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2272-12-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download