asyncrat | d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc

Analysis

max time kernel
150s
max time network
136s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25-11-2024 12:45

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General

Target

d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
Size

63KB
MD5

103629304104bf87dc75a086f3aebdb2
SHA1

6a03d4e5bba8c4ffb6c7432f948951b9c6064130
SHA256

d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc
SHA512

30647aa2adf2d7991385b730e15e9954b4b6ba58ab551850ab450b7f83c91b8c89f21de3bbf43fd4e9f858f65a1eac471b929821263c86966d16ead526206604
SSDEEP

768:otD5i7QHEU78j8C8A+XiV07hobtVZTnR48uyq1+T43SBGHmDbDBph0of3g4tyySI:GIgE8lwtNliQYUbrhB3g4AugdpqKmY7E

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:4321

127.0.0.1:17567

company-parker.gl.at.ply.gg:4321

company-parker.gl.at.ply.gg:17567

Attributes

delay
1
install
true
install_file
Grettaexecutor.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/0x000a00000001225f-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

Grettaexecutor.exe

pid	Process
2740	Grettaexecutor.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
2752	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
2896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exeGrettaexecutor.exe

pid	Process
1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe
2740	Grettaexecutor.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exeGrettaexecutor.exe

description	pid	Process
Token: SeDebugPrivilege	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
Token: SeDebugPrivilege	2740	Grettaexecutor.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.execmd.execmd.exe

description	pid	Process	procid_target
PID 1508 wrote to memory of 2824	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	30
PID 1508 wrote to memory of 2824	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	30
PID 1508 wrote to memory of 2824	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	30
PID 1508 wrote to memory of 2472	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	31
PID 1508 wrote to memory of 2472	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	31
PID 1508 wrote to memory of 2472	1508	d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe	31
PID 2824 wrote to memory of 2896	2824	cmd.exe	35
PID 2824 wrote to memory of 2896	2824	cmd.exe	35
PID 2824 wrote to memory of 2896	2824	cmd.exe	35
PID 2472 wrote to memory of 2752	2472	cmd.exe	34
PID 2472 wrote to memory of 2752	2472	cmd.exe	34
PID 2472 wrote to memory of 2752	2472	cmd.exe	34
PID 2472 wrote to memory of 2740	2472	cmd.exe	36
PID 2472 wrote to memory of 2740	2472	cmd.exe	36
PID 2472 wrote to memory of 2740	2472	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\d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
"C:\Users\Admin\AppData\Local\Temp\d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Grettaexecutor" /tr '"C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Grettaexecutor" /tr '"C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2896
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6B03.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2472
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2752
- - C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe
    "C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2740

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\tmp6B03.tmp.bat

Filesize
158B

MD5
5fe49d295b57b10f9e9d55a397c3223e

SHA1
39140be5e33b44f4eaecad914442eb95beaa0535

SHA256
6f1d49ab61bcefd3192a189b6552c8d011e81b4e65deb3dc8fb95b6edcd4d83d

SHA512
c63f1d38e8b2d2e1322f47106668051b75d5cc1d98f1dee4e47891ac76e397fd37e08ba13586f32629685f2a8919e2309fd2aeffc4abf6618ae0335132e7abe7

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

Filesize
63KB

MD5
103629304104bf87dc75a086f3aebdb2

SHA1
6a03d4e5bba8c4ffb6c7432f948951b9c6064130

SHA256
d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc

SHA512
30647aa2adf2d7991385b730e15e9954b4b6ba58ab551850ab450b7f83c91b8c89f21de3bbf43fd4e9f858f65a1eac471b929821263c86966d16ead526206604

Download Submit
memory/1508-0-0x000007FEF52B3000-0x000007FEF52B4000-memory.dmp

Filesize
4KB

Download
memory/1508-1-0x0000000000330000-0x0000000000346000-memory.dmp

Filesize
88KB

Download
memory/1508-2-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download
memory/1508-3-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download
memory/1508-12-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download
memory/2740-17-0x0000000001330000-0x0000000001346000-memory.dmp

Filesize
88KB

Download