asyncrat | 2a5dac302572ede5da5d53df170d5882937027b58290b6ea60e24478453276c9

Analysis

max time kernel
147s
max time network
120s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 12:13

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General

Target

cb4322618b0b4db058a877a4496155d6.exe
Size

204KB
MD5

cb4322618b0b4db058a877a4496155d6
SHA1

701330516ff914a042f484d123f940a45175b2fc
SHA256

2a5dac302572ede5da5d53df170d5882937027b58290b6ea60e24478453276c9
SHA512

f45e435db334cec2c39fdc3ab44be26ccff60f75a883430794bdf7a208c6e033b666b22fe93d8b736d336d07b539824d57a884df62004500bbb8e2318f7757af
SSDEEP

3072:bUQcxeNykmPMV/prEH1bxmFQPWwfBtOEp7ybMj/0vU7yZED+CDgby/Y:bWkmPMV/ZEVbMmW6mEpmbMjgU7yZf8

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Mutex

ewhzrclekutersfjwb

Attributes

delay
1
install
true
install_file
Update.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/0x0037000000016ed2-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2804	Update.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
2588	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
2732	schtasks.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
2152	cb4322618b0b4db058a877a4496155d6.exe
2152	cb4322618b0b4db058a877a4496155d6.exe
2152	cb4322618b0b4db058a877a4496155d6.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe
2804	Update.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2152	cb4322618b0b4db058a877a4496155d6.exe
Token: SeDebugPrivilege	2804	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2804	Update.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2764	2152	cb4322618b0b4db058a877a4496155d6.exe	30
PID 2152 wrote to memory of 2764	2152	cb4322618b0b4db058a877a4496155d6.exe	30
PID 2152 wrote to memory of 2764	2152	cb4322618b0b4db058a877a4496155d6.exe	30
PID 2152 wrote to memory of 2660	2152	cb4322618b0b4db058a877a4496155d6.exe	32
PID 2152 wrote to memory of 2660	2152	cb4322618b0b4db058a877a4496155d6.exe	32
PID 2152 wrote to memory of 2660	2152	cb4322618b0b4db058a877a4496155d6.exe	32
PID 2660 wrote to memory of 2588	2660	cmd.exe	34
PID 2660 wrote to memory of 2588	2660	cmd.exe	34
PID 2660 wrote to memory of 2588	2660	cmd.exe	34
PID 2764 wrote to memory of 2732	2764	cmd.exe	35
PID 2764 wrote to memory of 2732	2764	cmd.exe	35
PID 2764 wrote to memory of 2732	2764	cmd.exe	35
PID 2660 wrote to memory of 2804	2660	cmd.exe	36
PID 2660 wrote to memory of 2804	2660	cmd.exe	36
PID 2660 wrote to memory of 2804	2660	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\cb4322618b0b4db058a877a4496155d6.exe
"C:\Users\Admin\AppData\Local\Temp\cb4322618b0b4db058a877a4496155d6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Update" /tr '"C:\Users\Admin\AppData\Roaming\Update.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Update" /tr '"C:\Users\Admin\AppData\Roaming\Update.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2732
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp4450.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2588
- - C:\Users\Admin\AppData\Roaming\Update.exe
    "C:\Users\Admin\AppData\Roaming\Update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2804

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\tmp4450.tmp.bat

Filesize
150B

MD5
bcecfd7a994f687bed36a79086cdd915

SHA1
cce62653f4d386742cf21357972e91b5a46f7c2a

SHA256
170ad1b54229dfc7ca5450033db02c25af89ecc70b456bf45926e71a78fdd4a4

SHA512
5ee89a353416cbd5946fcc5d1112b4e17f63e5797b954ac34e4eaccc56a309adc25a1c6d08fd7f9b9c6444e03728c5ef7eb28968df61d14f0b96e843fdf1bae8

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\Update.exe

Filesize
204KB

MD5
cb4322618b0b4db058a877a4496155d6

SHA1
701330516ff914a042f484d123f940a45175b2fc

SHA256
2a5dac302572ede5da5d53df170d5882937027b58290b6ea60e24478453276c9

SHA512
f45e435db334cec2c39fdc3ab44be26ccff60f75a883430794bdf7a208c6e033b666b22fe93d8b736d336d07b539824d57a884df62004500bbb8e2318f7757af

Download Submit
memory/2152-0-0x000007FEF5543000-0x000007FEF5544000-memory.dmp

Filesize
4KB

Download
memory/2152-1-0x0000000000C80000-0x0000000000CB8000-memory.dmp

Filesize
224KB

Download
memory/2152-3-0x000007FEF5540000-0x000007FEF5F2C000-memory.dmp

Filesize
9.9MB

Download
memory/2152-13-0x000007FEF5540000-0x000007FEF5F2C000-memory.dmp

Filesize
9.9MB

Download
memory/2152-14-0x000007FEF5540000-0x000007FEF5F2C000-memory.dmp

Filesize
9.9MB

Download
memory/2804-18-0x0000000001180000-0x00000000011B8000-memory.dmp

Filesize
224KB

Download