asyncrat | a1ddae9574bbeadd40b789fc8c7719b47c0d4bd8ed93abbd1d07f7e866ac40a6

Analysis

max time kernel
144s
max time network
123s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:14 UTC

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General

Target

998566d8ea82f0a3c8f337e42a95f373.exe
Size

45KB
MD5

998566d8ea82f0a3c8f337e42a95f373
SHA1

e61b997562fadf8c805bf9d66b194db9fac2e958
SHA256

c19fa552e9898ac3a969fccbd5225b286393e4d4ef0343df96794e0a633ba1c5
SHA512

b7bdf4a03674899c02999a9a0f9f1fae67d97c0646d37fed97ae770d4ee1240a39f0388ff8dc6eac760bde12d6e291f5371c075ce49728fcf84e2edaddec6407
SSDEEP

768:wuYqlTLoczGWUgP28mo2qMAKjPGaG6PIyzjbFgX3irduljz5WpcBDZ7B:wuYqlTLbj2AKTkDy3bCXSrqz0p6d7B

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:8000

Mutex

ddsO1QLOdEGK

Attributes

delay
3
install
true
install_file
Windows745635.exe
install_folder
%Temp%

aes.plain

1
1aICevoS90zJkBByu7BVQwwEZLQx0it3

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

resource	yara_rule
behavioral19/files/0x000b0000000122cf-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2568	Windows745635.exe

Loads dropped DLL 1 IoCs

pid	Process
2576	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	998566d8ea82f0a3c8f337e42a95f373.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows745635.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2716	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
3064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2232	998566d8ea82f0a3c8f337e42a95f373.exe
2232	998566d8ea82f0a3c8f337e42a95f373.exe
2232	998566d8ea82f0a3c8f337e42a95f373.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	998566d8ea82f0a3c8f337e42a95f373.exe
Token: SeDebugPrivilege	2568	Windows745635.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2784	2232	998566d8ea82f0a3c8f337e42a95f373.exe	32
PID 2232 wrote to memory of 2784	2232	998566d8ea82f0a3c8f337e42a95f373.exe	32
PID 2232 wrote to memory of 2784	2232	998566d8ea82f0a3c8f337e42a95f373.exe	32
PID 2232 wrote to memory of 2784	2232	998566d8ea82f0a3c8f337e42a95f373.exe	32
PID 2232 wrote to memory of 2576	2232	998566d8ea82f0a3c8f337e42a95f373.exe	34
PID 2232 wrote to memory of 2576	2232	998566d8ea82f0a3c8f337e42a95f373.exe	34
PID 2232 wrote to memory of 2576	2232	998566d8ea82f0a3c8f337e42a95f373.exe	34
PID 2232 wrote to memory of 2576	2232	998566d8ea82f0a3c8f337e42a95f373.exe	34
PID 2784 wrote to memory of 3064	2784	cmd.exe	36
PID 2784 wrote to memory of 3064	2784	cmd.exe	36
PID 2784 wrote to memory of 3064	2784	cmd.exe	36
PID 2784 wrote to memory of 3064	2784	cmd.exe	36
PID 2576 wrote to memory of 2716	2576	cmd.exe	37
PID 2576 wrote to memory of 2716	2576	cmd.exe	37
PID 2576 wrote to memory of 2716	2576	cmd.exe	37
PID 2576 wrote to memory of 2716	2576	cmd.exe	37
PID 2576 wrote to memory of 2568	2576	cmd.exe	38
PID 2576 wrote to memory of 2568	2576	cmd.exe	38
PID 2576 wrote to memory of 2568	2576	cmd.exe	38
PID 2576 wrote to memory of 2568	2576	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\998566d8ea82f0a3c8f337e42a95f373.exe
"C:\Users\Admin\AppData\Local\Temp\998566d8ea82f0a3c8f337e42a95f373.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows745635" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows745635.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows745635" /tr '"C:\Users\Admin\AppData\Local\Temp\Windows745635.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3064
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp54E.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2716
- - C:\Users\Admin\AppData\Local\Temp\Windows745635.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows745635.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2568

Network

No results found

127.0.0.1:8000

Windows745635.exe
127.0.0.1:8808

Windows745635.exe
127.0.0.1:8808

Windows745635.exe
127.0.0.1:8808

Windows745635.exe
127.0.0.1:7707

Windows745635.exe
127.0.0.1:7707

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:8000

Windows745635.exe
127.0.0.1:8000

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:7707

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:8808

Windows745635.exe
127.0.0.1:8808

Windows745635.exe
127.0.0.1:8000

Windows745635.exe
127.0.0.1:8000

Windows745635.exe
127.0.0.1:6606

Windows745635.exe
127.0.0.1:8000

Windows745635.exe

No results found

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp54E.tmp.bat

Filesize
159B

MD5
9ff2e535d582bab5b2118c06102bfc0a

SHA1
5ea6607e70447325b5d8f3499e22b51568713d7f

SHA256
3b856d4e2e105b9bba1a061d5d3f641fbf7d679a2def1f1b44bb7414ddf46abe

SHA512
17c959792e2c456d8c2c8a3b876ee8cc01ca72ca76860a066c434be0fcfc4eb3762a22d16a997ca1492e1cc7e056d33b9ff4e011b28dea552090739f53d52e6d

Download Submit
\Users\Admin\AppData\Local\Temp\Windows745635.exe

Filesize
45KB

MD5
998566d8ea82f0a3c8f337e42a95f373

SHA1
e61b997562fadf8c805bf9d66b194db9fac2e958

SHA256
c19fa552e9898ac3a969fccbd5225b286393e4d4ef0343df96794e0a633ba1c5

SHA512
b7bdf4a03674899c02999a9a0f9f1fae67d97c0646d37fed97ae770d4ee1240a39f0388ff8dc6eac760bde12d6e291f5371c075ce49728fcf84e2edaddec6407

Download Submit
memory/2232-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x0000000000FE0000-0x0000000000FF2000-memory.dmp

Filesize
72KB

Download
memory/2232-2-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2232-11-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2568-16-0x0000000000A20000-0x0000000000A32000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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