asyncrat | 347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

Resubmissions

21-12-2024 16:23

241221-tvtn7ssrdp 10

21-12-2024 16:22

241221-tvmkwsspfz 10

Analysis

max time kernel
143s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-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
behavioral1/files/0x0004000000004ed7-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2888	Maple.exe

Loads dropped DLL 1 IoCs

pid	Process
2416	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Maple.exe
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	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2440	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
2720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2520	gggg.exe
2520	gggg.exe
2520	gggg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	gggg.exe
Token: SeDebugPrivilege	2888	Maple.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 284	2520	gggg.exe	31
PID 2520 wrote to memory of 284	2520	gggg.exe	31
PID 2520 wrote to memory of 284	2520	gggg.exe	31
PID 2520 wrote to memory of 284	2520	gggg.exe	31
PID 2520 wrote to memory of 2416	2520	gggg.exe	33
PID 2520 wrote to memory of 2416	2520	gggg.exe	33
PID 2520 wrote to memory of 2416	2520	gggg.exe	33
PID 2520 wrote to memory of 2416	2520	gggg.exe	33
PID 284 wrote to memory of 2720	284	cmd.exe	35
PID 284 wrote to memory of 2720	284	cmd.exe	35
PID 284 wrote to memory of 2720	284	cmd.exe	35
PID 284 wrote to memory of 2720	284	cmd.exe	35
PID 2416 wrote to memory of 2440	2416	cmd.exe	36
PID 2416 wrote to memory of 2440	2416	cmd.exe	36
PID 2416 wrote to memory of 2440	2416	cmd.exe	36
PID 2416 wrote to memory of 2440	2416	cmd.exe	36
PID 2416 wrote to memory of 2888	2416	cmd.exe	37
PID 2416 wrote to memory of 2888	2416	cmd.exe	37
PID 2416 wrote to memory of 2888	2416	cmd.exe	37
PID 2416 wrote to memory of 2888	2416	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\gggg.exe
"C:\Users\Admin\AppData\Local\Temp\gggg.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- 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:284
- - 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:2720
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF557.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2440
- - 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:2888

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

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\tmpF557.tmp.bat

Filesize
149B

MD5
9b7082eba0df78921d1c428e02bcdb76

SHA1
781832f6d6fdd4f18e6ed976c57c744b42d19584

SHA256
1cb0abe2cf17c7a17fd89d69f58206a63aafe9042709e01d80276a5d9cb07ec5

SHA512
ae9227686a4b56f98f72328d2d4bd903facb44cde338707d27b3e929165d9823602164bbd33dbe0d4c00de60c69dbe4d5f0e73165a9f67066ae5f5e20ba21f79

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

Filesize
52KB

MD5
fb6d592ff07d0e26a291b3e78c1ce139

SHA1
e5e82e613372b0795f8347ac643e954f0c514df2

SHA256
347586f7facf4ef5fcb456f6589d65cb3167a7fa4379740ff03b2c861d8cf364

SHA512
5db5797fcb1a6c2cbd2e2f4aaf2a5fd47f693116583596292531b73a36eabc8517ee7bc1d8cb5a999f45a5ca91152f0b3a810ec00ce35c8283f02d1c5e287779

Download Submit
memory/2520-0-0x000000007402E000-0x000000007402F000-memory.dmp

Filesize
4KB

Download
memory/2520-1-0x0000000000F00000-0x0000000000F12000-memory.dmp

Filesize
72KB

Download
memory/2520-2-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2520-12-0x0000000074020000-0x000000007470E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-16-0x0000000000840000-0x0000000000852000-memory.dmp

Filesize
72KB

Download