asyncrat | ae36b5486b5f95cb451985cf270963956822bbfaded42c35da3abced9bff2f3d

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-08-2024 16:23

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General

Target

ce0eb5168feda8b72aa9cbfe311378e0N.exe
Size

63KB
MD5

ce0eb5168feda8b72aa9cbfe311378e0
SHA1

18248cf6a415bc816b0a983b3dd74da7a9ee9023
SHA256

ae36b5486b5f95cb451985cf270963956822bbfaded42c35da3abced9bff2f3d
SHA512

5a2fa589276afcac414ebb0424f1a56bdeb28cd8999f8902c81083961eecfd7b13639df67f52375c32fc7b5e616724baa79b722508414db5e7d12e1af4268013
SSDEEP

768:iK7epXkjhxfm785YC8A+Xz2peyr61urX1+T4uoSBGHmDbDTph0oXI9tBE9SuQdph:NDhxf8Qn0tYUbJh94ZuQdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

and-statements.gl.at.ply.gg:43442

Attributes

delay
1
install
true
install_file
test.exe
install_folder
%Temp%

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
behavioral2/files/0x000a00000001da30-11.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	ce0eb5168feda8b72aa9cbfe311378e0N.exe

Executes dropped EXE 1 IoCs

pid	Process
1204	test.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
4392	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
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe
1204	test.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
Token: SeDebugPrivilege	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe
Token: SeDebugPrivilege	1204	test.exe
Token: SeDebugPrivilege	1204	test.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 2116	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe	87
PID 4760 wrote to memory of 2116	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe	87
PID 4760 wrote to memory of 224	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe	89
PID 4760 wrote to memory of 224	4760	ce0eb5168feda8b72aa9cbfe311378e0N.exe	89
PID 2116 wrote to memory of 4104	2116	cmd.exe	91
PID 2116 wrote to memory of 4104	2116	cmd.exe	91
PID 224 wrote to memory of 4392	224	cmd.exe	92
PID 224 wrote to memory of 4392	224	cmd.exe	92
PID 224 wrote to memory of 1204	224	cmd.exe	93
PID 224 wrote to memory of 1204	224	cmd.exe	93

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\ce0eb5168feda8b72aa9cbfe311378e0N.exe
"C:\Users\Admin\AppData\Local\Temp\ce0eb5168feda8b72aa9cbfe311378e0N.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Local\Temp\test.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Local\Temp\test.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4104
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB844.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4392
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    "C:\Users\Admin\AppData\Local\Temp\test.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1204

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\test.exe

Filesize
63KB

MD5
ce0eb5168feda8b72aa9cbfe311378e0

SHA1
18248cf6a415bc816b0a983b3dd74da7a9ee9023

SHA256
ae36b5486b5f95cb451985cf270963956822bbfaded42c35da3abced9bff2f3d

SHA512
5a2fa589276afcac414ebb0424f1a56bdeb28cd8999f8902c81083961eecfd7b13639df67f52375c32fc7b5e616724baa79b722508414db5e7d12e1af4268013

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB844.tmp.bat

Filesize
151B

MD5
babcbe808ad79db40168b8e203755dda

SHA1
131e41bbbcc95b2cea356fe39590d930f9fa372d

SHA256
b3b4128e4161a1416092936b2c0b5293485d0169d5a9d9f9a89d4f9f34eabd9b

SHA512
a5c8edc53c9aeeb77f4e66027b596a0da946aa1d63b84c8c1fe7564c5e0649d07c5523f7e058b5bf66f03bd282ab61d6fbc8012f38e791acc6f3ab4a0d45d7dd

Download Submit
memory/4760-1-0x00007FFCCA6B3000-0x00007FFCCA6B5000-memory.dmp

Filesize
8KB

Download
memory/4760-0-0x00000000006F0000-0x0000000000706000-memory.dmp

Filesize
88KB

Download
memory/4760-2-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

Filesize
10.8MB

Download
memory/4760-7-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

Filesize
10.8MB

Download
memory/4760-8-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

Filesize
10.8MB

Download