asyncrat | 137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-08-2024 18:29

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General

Target

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
Size

145KB
MD5

b50678ff92638feb7b8aa2f4ff3be8ee
SHA1

8454d64704f29c592fbd4a525cba89d1c98eff9a
SHA256

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605
SHA512

f6a2e7dd911bc58dc219abf5501d73f2f42d3d5b05c62293c593016b7048e3f7be81564d247fc939f51f60502ea6f7a38946a24da3844f05db7bf94cda8e5788
SSDEEP

3072:JU6cxbgwmPMV1YSnu1bhUZiQ4e5BV0WUniyimy5bY:JbwmPMVWiwbQi7e5v0WURyt

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

rmlpeezhttpf

Attributes

delay
1
install
true
install_file
msedge.exe
install_folder
%AppData%
pastebin_config
https://pastebin.ai/raw/ti3rlkerxk

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

VenomRAT 2 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
behavioral2/memory/4836-1-0x0000000000570000-0x000000000059A000-memory.dmp	VenomRAT
behavioral2/files/0x0008000000009da1-12.dat	VenomRAT

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x0008000000009da1-12.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe

Executes dropped EXE 1 IoCs

Processes:

msedge.exe

pid	Process
4460	msedge.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
2108	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
3580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 57 IoCs

Processes:

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exemsedge.exe

pid	Process
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe
4460	msedge.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exemsedge.exe

description	pid	Process
Token: SeDebugPrivilege	4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
Token: SeDebugPrivilege	4460	msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msedge.exe

pid	Process
4460	msedge.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.execmd.execmd.exe

description	pid	Process	procid_target
PID 4836 wrote to memory of 1928	4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe	87
PID 4836 wrote to memory of 1928	4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe	87
PID 4836 wrote to memory of 1924	4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe	88
PID 4836 wrote to memory of 1924	4836	137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe	88
PID 1924 wrote to memory of 2108	1924	cmd.exe	91
PID 1924 wrote to memory of 2108	1924	cmd.exe	91
PID 1928 wrote to memory of 3580	1928	cmd.exe	92
PID 1928 wrote to memory of 3580	1928	cmd.exe	92
PID 1924 wrote to memory of 4460	1924	cmd.exe	97
PID 1924 wrote to memory of 4460	1924	cmd.exe	97

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\137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe
"C:\Users\Admin\AppData\Local\Temp\137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "msedge" /tr '"C:\Users\Admin\AppData\Roaming\msedge.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1928
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "msedge" /tr '"C:\Users\Admin\AppData\Roaming\msedge.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3580
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA836.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2108
- - C:\Users\Admin\AppData\Roaming\msedge.exe
    "C:\Users\Admin\AppData\Roaming\msedge.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4460

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\tmpA836.tmp.bat

Filesize
150B

MD5
71869be9b731e8cd6897108dbcf5b790

SHA1
cac7722ba1defa13ee234f92361f215eb92c458d

SHA256
22481ce87a1c38fc966856aee2a0b34c51a49fa050ddd26bc562d6a76e1365f6

SHA512
f27c13f300a82f6861f65726de7fe4ba78d03c78be231896ea35e7f4c06c7db81abfe7ed2f518fe947f33cd575169d9228a63252bb43417a84c74308898be053

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
145KB

MD5
b50678ff92638feb7b8aa2f4ff3be8ee

SHA1
8454d64704f29c592fbd4a525cba89d1c98eff9a

SHA256
137df247e18f0efcfd07e9b9bcc1014a532cab2737aedbc456c3c43f5e7b1605

SHA512
f6a2e7dd911bc58dc219abf5501d73f2f42d3d5b05c62293c593016b7048e3f7be81564d247fc939f51f60502ea6f7a38946a24da3844f05db7bf94cda8e5788

Download Submit
memory/4836-0-0x00007FFACF013000-0x00007FFACF015000-memory.dmp

Filesize
8KB

Download
memory/4836-1-0x0000000000570000-0x000000000059A000-memory.dmp

Filesize
168KB

Download
memory/4836-3-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/4836-8-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download
memory/4836-9-0x00007FFACF010000-0x00007FFACFAD1000-memory.dmp

Filesize
10.8MB

Download