asyncrat | 347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

Resubmissions

21-12-2024 16:23

241221-tvtn7ssrdp 10

21-12-2024 16:22

241221-tvmkwsspfz 10

Analysis

max time kernel
137s
max time network
146s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
21-12-2024 16:23

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General

Target

gggg.exe
Size

52KB
MD5

fb6d592ff07d0e26a291b3e78c1ce139
SHA1

e5e82e613372b0795f8347ac643e954f0c514df2
SHA256

347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364
SHA512

5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779
SSDEEP

1536:2uu91TwSb2nth5csqQXb6HoTUdHN0QdH/:2uuDTwSb2tQsqwb6I4dtl9/

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

127.0.0.1:8808

10.59.25.45:8808

Mutex

KxaqMLMZrN62

Attributes

delay
3
install
true
install_file
Maple.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

resource	yara_rule
behavioral3/files/0x002900000004617b-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-1-5-21-2062871678-1047416116-518495306-1000\Control Panel\International\Geo\Nation	gggg.exe

Executes dropped EXE 1 IoCs

pid	Process
2084	Maple.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	gggg.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Maple.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
320	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
4652	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe
980	gggg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	980	gggg.exe
Token: SeDebugPrivilege	2084	Maple.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 980 wrote to memory of 4776	980	gggg.exe	87
PID 980 wrote to memory of 4776	980	gggg.exe	87
PID 980 wrote to memory of 4776	980	gggg.exe	87
PID 980 wrote to memory of 4368	980	gggg.exe	89
PID 980 wrote to memory of 4368	980	gggg.exe	89
PID 980 wrote to memory of 4368	980	gggg.exe	89
PID 4368 wrote to memory of 320	4368	cmd.exe	91
PID 4368 wrote to memory of 320	4368	cmd.exe	91
PID 4368 wrote to memory of 320	4368	cmd.exe	91
PID 4776 wrote to memory of 4652	4776	cmd.exe	92
PID 4776 wrote to memory of 4652	4776	cmd.exe	92
PID 4776 wrote to memory of 4652	4776	cmd.exe	92
PID 4368 wrote to memory of 2084	4368	cmd.exe	95
PID 4368 wrote to memory of 2084	4368	cmd.exe	95
PID 4368 wrote to memory of 2084	4368	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\gggg.exe
"C:\Users\Admin\AppData\Local\Temp\gggg.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Maple" /tr '"C:\Users\Admin\AppData\Roaming\Maple.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Maple" /tr '"C:\Users\Admin\AppData\Roaming\Maple.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4652
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB8B1.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4368
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:320
- - C:\Users\Admin\AppData\Roaming\Maple.exe
    "C:\Users\Admin\AppData\Roaming\Maple.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2084

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

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\tmpB8B1.tmp.bat

Filesize
149B

MD5
0b8b27a0952cd231ead93987ea881d91

SHA1
2d8707f2735146a1d092dbfe251185e2cb61a27f

SHA256
23ac195104032cdb9e0890950fd1b15ef575a1a22e4329f19abf51db160888ea

SHA512
7a3179524cf2b1c4c843b228ebf8d2c9c1d2e650da48c2d075d37a39dd6f40d2002dc0b5f9fc3cb34fda144c0eccba18bf8200b5c82062d1674e79e52d5b10e8

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

Filesize
52KB

MD5
fb6d592ff07d0e26a291b3e78c1ce139

SHA1
e5e82e613372b0795f8347ac643e954f0c514df2

SHA256
347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

SHA512
5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779

Download Submit
memory/980-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/980-1-0x0000000000170000-0x0000000000182000-memory.dmp

Filesize
72KB

Download
memory/980-2-0x00000000747C0000-0x0000000074F71000-memory.dmp

Filesize
7.7MB

Download
memory/980-3-0x0000000004B20000-0x0000000004BBC000-memory.dmp

Filesize
624KB

Download
memory/980-8-0x00000000747C0000-0x0000000074F71000-memory.dmp

Filesize
7.7MB

Download
memory/2084-13-0x00000000747C0000-0x0000000074F71000-memory.dmp

Filesize
7.7MB

Download
memory/2084-14-0x00000000747C0000-0x0000000074F71000-memory.dmp

Filesize
7.7MB

Download