asyncrat | 46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e

Analysis

max time kernel
107s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27/09/2024, 13:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Image-1.exe
Size

257KB
MD5

aa7453ea631c154413df9974a3b17b90
SHA1

ec7df5d298d392b3d1e7e7825e15ee112d587885
SHA256

46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e
SHA512

fb1b9f3216d4574936c019b7351f8b9f5a63983df0ad231b210cb67d188b1824aeb3240471d7ed7842a47108aef681d185c026233d1687af7b48510fae8bfbb1
SSDEEP

6144:mCn9gl994bCIMenvjnPrNoaIxT7K/P19yZD2kzMZOI:mCKl92CIDvjDNo1t7K/P19yZD2kzMZz

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

154.216.17.207:7707

154.216.17.207:8808

154.216.17.207:1188

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
100
install
true
install_file
file.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat 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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	Image-1.exe

Executes dropped EXE 3 IoCs

pid	Process
4072	file.exe
3152	file.exe
2140	file.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4176 set thread context of 5036	4176	Image-1.exe	84
PID 4176 set thread context of 2628	4176	Image-1.exe	85
PID 4072 set thread context of 3152	4072	file.exe	103
PID 4072 set thread context of 2140	4072	file.exe	104

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3956	2140	WerFault.exe	104

System Location Discovery: System Language Discovery 1 TTPs 9 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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Image-1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Image-1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Image-1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4664	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
3840	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe
5036	Image-1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4176	Image-1.exe
Token: SeDebugPrivilege	5036	Image-1.exe
Token: SeDebugPrivilege	4072	file.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 5036	4176	Image-1.exe	84
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 4176 wrote to memory of 2628	4176	Image-1.exe	85
PID 5036 wrote to memory of 4332	5036	Image-1.exe	96
PID 5036 wrote to memory of 4332	5036	Image-1.exe	96
PID 5036 wrote to memory of 4332	5036	Image-1.exe	96
PID 5036 wrote to memory of 3420	5036	Image-1.exe	98
PID 5036 wrote to memory of 3420	5036	Image-1.exe	98
PID 5036 wrote to memory of 3420	5036	Image-1.exe	98
PID 4332 wrote to memory of 3840	4332	cmd.exe	100
PID 4332 wrote to memory of 3840	4332	cmd.exe	100
PID 4332 wrote to memory of 3840	4332	cmd.exe	100
PID 3420 wrote to memory of 4664	3420	cmd.exe	101
PID 3420 wrote to memory of 4664	3420	cmd.exe	101
PID 3420 wrote to memory of 4664	3420	cmd.exe	101
PID 3420 wrote to memory of 4072	3420	cmd.exe	102
PID 3420 wrote to memory of 4072	3420	cmd.exe	102
PID 3420 wrote to memory of 4072	3420	cmd.exe	102
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 3152	4072	file.exe	103
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104
PID 4072 wrote to memory of 2140	4072	file.exe	104

C:\Users\Admin\AppData\Local\Temp\Image-1.exe
"C:\Users\Admin\AppData\Local\Temp\Image-1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4332
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3840
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5104.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3420
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:4664
  - - C:\Users\Admin\AppData\Roaming\file.exe
      "C:\Users\Admin\AppData\Roaming\file.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4072
    - - C:\Users\Admin\AppData\Roaming\file.exe
        
        C:\Users\Admin\AppData\Roaming\file.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3152
    - - C:\Users\Admin\AppData\Roaming\file.exe
        
        C:\Users\Admin\AppData\Roaming\file.exe
        5⤵
        Executes dropped EXE
        
        PID:2140
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 80
        6⤵
        Program crash
        
        PID:3956
- C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  C:\Users\Admin\AppData\Local\Temp\Image-1.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2140 -ip 2140
1⤵
PID:3380

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Image-1.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5104.tmp.bat

Filesize
148B

MD5
aafc4f00b9b66ac63cc23ab7ed2bf299

SHA1
a3632f62a21eb1a41d6068eb303ddbd43530f07f

SHA256
8d492e5c98f59120452adebd66dbfe8e0b70197f63b367ea61467d530103db4b

SHA512
562e199c1673e586d85a2801e6159fc4f9746e356a69a74e8b3e30ac232413f4dc5777bac8b296caad819c233d99e3680fec9f80040d7739acf3d7f3b26c1113

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

Filesize
257KB

MD5
aa7453ea631c154413df9974a3b17b90

SHA1
ec7df5d298d392b3d1e7e7825e15ee112d587885

SHA256
46a63396c3d340513f963181b0098f984e62861875151d25fea30013170c8f3e

SHA512
fb1b9f3216d4574936c019b7351f8b9f5a63983df0ad231b210cb67d188b1824aeb3240471d7ed7842a47108aef681d185c026233d1687af7b48510fae8bfbb1

Download Submit
memory/2628-18-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/2628-21-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/2628-16-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/2628-13-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4176-8-0x00000000046F0000-0x00000000046F6000-memory.dmp

Filesize
24KB

Download
memory/4176-7-0x000000000D990000-0x000000000DA22000-memory.dmp

Filesize
584KB

Download
memory/4176-6-0x000000000DEA0000-0x000000000E444000-memory.dmp

Filesize
5.6MB

Download
memory/4176-0-0x00000000752BE000-0x00000000752BF000-memory.dmp

Filesize
4KB

Download
memory/4176-5-0x000000000D850000-0x000000000D8EC000-memory.dmp

Filesize
624KB

Download
memory/4176-14-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4176-4-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4176-3-0x000000000D770000-0x000000000D7B0000-memory.dmp

Filesize
256KB

Download
memory/4176-2-0x0000000002540000-0x0000000002546000-memory.dmp

Filesize
24KB

Download
memory/4176-1-0x0000000000200000-0x000000000024A000-memory.dmp

Filesize
296KB

Download
memory/5036-12-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/5036-20-0x00000000050A0000-0x0000000005106000-memory.dmp

Filesize
408KB

Download
memory/5036-17-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/5036-25-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/5036-15-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/5036-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download