asyncrat | aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 23:23

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General

Target

Loader.exe
Size

63KB
MD5

7ceb11ebb7a55e33a82bc3b66f554e79
SHA1

8dfd574ad06ded662d92d81b72f14c1914ac45b5
SHA256

aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603
SHA512

d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd
SSDEEP

768:rig6BqomfHz4c78F3C8A+XuLvRIOdJD7P7DEhfW1+T4iSBGHmDbDOphLoXaHnCtB:i+4/WD7jhBYUbghiynCCundpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

technical-southwest.gl.at.ply.gg:58694

Attributes

delay
1
install
true
install_file
WINDOWS.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
behavioral2/files/0x000b000000023b93-10.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:

Loader.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Loader.exe

Executes dropped EXE 1 IoCs

Processes:

WINDOWS.exe

pid	Process
2928	WINDOWS.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
264	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
3944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Loader.exeWINDOWS.exe

pid	Process
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
1520	Loader.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe
2928	WINDOWS.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Loader.exeWINDOWS.exe

description	pid	Process
Token: SeDebugPrivilege	1520	Loader.exe
Token: SeDebugPrivilege	1520	Loader.exe
Token: SeDebugPrivilege	2928	WINDOWS.exe
Token: SeDebugPrivilege	2928	WINDOWS.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Loader.execmd.execmd.exe

description	pid	Process	procid_target
PID 1520 wrote to memory of 1264	1520	Loader.exe	84
PID 1520 wrote to memory of 1264	1520	Loader.exe	84
PID 1520 wrote to memory of 3504	1520	Loader.exe	86
PID 1520 wrote to memory of 3504	1520	Loader.exe	86
PID 3504 wrote to memory of 264	3504	cmd.exe	88
PID 3504 wrote to memory of 264	3504	cmd.exe	88
PID 1264 wrote to memory of 3944	1264	cmd.exe	89
PID 1264 wrote to memory of 3944	1264	cmd.exe	89
PID 3504 wrote to memory of 2928	3504	cmd.exe	96
PID 3504 wrote to memory of 2928	3504	cmd.exe	96

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\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3944
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9BA4.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3504
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:264
- - C:\Users\Admin\AppData\Roaming\WINDOWS.exe
    "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2928

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\tmp9BA4.tmp.bat

Filesize
151B

MD5
4a05f43c196934a9c7cba59cbb507966

SHA1
0d36f9d81168f9df992b51a5a1d1dca8dad8070a

SHA256
152f2b64308a85309ae05551a917429da4c40124cfd881fb4124f511ac0e4932

SHA512
404be51ab96a855323ecad7be33e9eefdc885f920132b38ee5fd4368fbe40fe9b5b8342f005a410614aa179d2e13d4ac6acda7ddc1a2ae07e56d20ea5bd14520

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

Filesize
63KB

MD5
7ceb11ebb7a55e33a82bc3b66f554e79

SHA1
8dfd574ad06ded662d92d81b72f14c1914ac45b5

SHA256
aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

SHA512
d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

Download Submit
memory/1520-0-0x00007FFA81103000-0x00007FFA81105000-memory.dmp

Filesize
8KB

Download
memory/1520-1-0x00000000008B0000-0x00000000008C6000-memory.dmp

Filesize
88KB

Download
memory/1520-2-0x00007FFA81100000-0x00007FFA81BC1000-memory.dmp

Filesize
10.8MB

Download
memory/1520-7-0x00007FFA81100000-0x00007FFA81BC1000-memory.dmp

Filesize
10.8MB

Download