asyncrat | 433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc

Analysis

max time kernel
119s
max time network
152s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09-07-2024 21:38

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General

Target

433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe
Size

2.4MB
MD5

23878e53dc083c8a3eaaa56a47df0f46
SHA1

33de428e36e9cbcbf1363587ce387a685c9aff9f
SHA256

433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc
SHA512

3ea1a4534294567a63320ae71f4dddb4a5d9cab36ea74d5fd45f6514905e0b9de38dc46ca87138a17cc43b730662828f9f6101993697c6ec9a6574cf9b72b0d9
SSDEEP

49152:C02faKRvNBmM9KzFa1F5y0ElNhIyGuDOfg2fwPB/XUSquJ3F:C0MFvfmM8zYF5y0ErqyhO42A/XUSq0F

Score

10^/10

asyncrat default execution persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

95.211.208.153:6606

95.211.208.153:7707

95.211.208.153:8808

5512.sytes.net:6606

5512.sytes.net:7707

5512.sytes.net:8808

Mutex

Llg9a02PERRO

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

Executes dropped EXE 2 IoCs

pid	Process
2800	Zcsbaibfhun.exe
2820	Patch.exe

Loads dropped DLL 3 IoCs

pid	Process
2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe
2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe
2820	Patch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows\CurrentVersion\Run\Duyiyilycdc = "C:\\Users\\Admin\\AppData\\Roaming\\Duyiyilycdc.exe"	Zcsbaibfhun.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 3272	2800	Zcsbaibfhun.exe	36

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2776	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2776	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2800	Zcsbaibfhun.exe
Token: SeDebugPrivilege	2800	Zcsbaibfhun.exe
Token: SeDebugPrivilege	3272	InstallUtil.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 2776	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	31
PID 2704 wrote to memory of 2776	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	31
PID 2704 wrote to memory of 2776	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	31
PID 2704 wrote to memory of 2776	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	31
PID 2704 wrote to memory of 2800	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	33
PID 2704 wrote to memory of 2800	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	33
PID 2704 wrote to memory of 2800	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	33
PID 2704 wrote to memory of 2800	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	33
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2704 wrote to memory of 2820	2704	433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe	34
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36
PID 2800 wrote to memory of 3272	2800	Zcsbaibfhun.exe	36

C:\Users\Admin\AppData\Local\Temp\433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe
"C:\Users\Admin\AppData\Local\Temp\433db8ca4379cc5873903c7022b907ba15d8b92e42074455ab9de094a1d56ddc.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHUAZABxACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG4AawBrACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAG4AawBkACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGwAaQB3ACMAPgA="
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe
  "C:\Users\Admin\AppData\Local\Temp\Zcsbaibfhun.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3272
- C:\Users\Admin\AppData\Local\Temp\Patch.exe
  "C:\Users\Admin\AppData\Local\Temp\Patch.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab1D52.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Patch.exe

Filesize
62KB

MD5
ce05447157c7ef90eba3fd8f964de822

SHA1
f034960560285c2b5d563a615263baa44b49d670

SHA256
9069e06079e1e69fe4462096859bbd6feb1fc7e2803c285bf7a3498382f93095

SHA512
60820fbdd9d8f726e15d33b71b6873779ac649401cd6854f5dc42c27d257dd467bc33dd224883a7c8e9e3801fe443f0dde98890f1468891cbc405a42b9e0e7b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3171.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

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

Filesize
2.4MB

MD5
5870c41c149fdd038336b2a1b2103e2f

SHA1
d3efce3cc94fb928113481aee8d58cdeea24a708

SHA256
9b489f300c3797e9d343a47ecd96e83646a61b02c28b5e68071d26a5a666c929

SHA512
9fdbc2281e54dc640e8b2598faedabffe70f3fc739d88a603c0d43a8496fc08b07fcebd63fabd11d69c3393edb28eec867ab505a5c694ebe17632d04fe8952a7

Download Submit
\Users\Admin\AppData\Local\Temp\dup2patcher.dll

Filesize
56KB

MD5
34887489d2c8963dcb4ea6baf78f4254

SHA1
5821fcfe7ebafac3d569e6da18720fe0619ea162

SHA256
4ef87c43607bb2c8d9dd813e91a2c8867ad50f0166a12da853d16c2df913182b

SHA512
c0f1a3182cd9373a7bb0d12470d6668fdfc799436986172885aaf1040ee878878b7f799f8c4424e92fc610f21833f0022a858e123b29de7d669e21542c9b02dc

Download Submit
memory/2800-53-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-59-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-22-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-23-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-25-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-29-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-31-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-33-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-35-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-27-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-37-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-39-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-43-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-41-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-45-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-47-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-49-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-20-0x0000000005010000-0x0000000005230000-memory.dmp

Filesize
2.1MB

Download
memory/2800-55-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-51-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-57-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-21-0x0000000006360000-0x0000000006582000-memory.dmp

Filesize
2.1MB

Download
memory/2800-61-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-63-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-65-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-67-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-69-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-71-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-77-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-81-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-83-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-4909-0x0000000002260000-0x00000000022AC000-memory.dmp

Filesize
304KB

Download
memory/2800-4908-0x0000000004C30000-0x0000000004C8C000-memory.dmp

Filesize
368KB

Download
memory/2800-85-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-79-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-75-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-73-0x0000000006360000-0x000000000657C000-memory.dmp

Filesize
2.1MB

Download
memory/2800-4910-0x0000000004C90000-0x0000000004CE4000-memory.dmp

Filesize
336KB

Download
memory/2800-19-0x0000000000100000-0x0000000000362000-memory.dmp

Filesize
2.4MB

Download
memory/2820-16-0x0000000074200000-0x0000000074226000-memory.dmp

Filesize
152KB

Download
memory/3272-4924-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download