asyncrat | AsyncClient[.]exe

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General

Target
AsyncClient.exe
Size 45KB
Sample260718-bfemmae17w
SHA256 4aacdc8a82a12de49bcd1fd3067f4b9182ad07a6f130e08dfe5f1b71de143f89
MD5 f2b589fbd0824a7ea006caa39b27ec99
SHA1 9dc0de5edd9edd056388f72800d9d226444963fd
SHA512 366e9bc3223af3e3f749740164732b11a6a33298c9a85b6aada6355e797f70368d12c7f344e7b5c471169770ecca93fc1def792c706e6fde73d79cbbb4af980a
SSDEEP 768:Auu8BTs78zihWUlIeYmo2qtNOjPGagAWOzjbFgX3inLZFervsBxHEEfp7cDZ5f+:Auu8BTsg/2eOTKTO3bCXSnNErvsBxPfB
TLSH
T1C7233C003BE8822BF2BE5F78ACF25145867AF2636603D64D1CC451DB5613FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

rat default asyncrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

phonekadai.in/vi-vn/:6606
phonekadai.in/vi-vn/:7707
phonekadai.in/vi-vn/:8808
phonekadai.in/vi-vn/:443
phonekadai.in/vi-vn/:80
phonekadai.in/vi-vn/:8844
phonekadai.in/vi-vn/:22
phonekadai.in/vi-vn/:53
saniflex.com.mx/vi-vn/:6606
saniflex.com.mx/vi-vn/:7707
saniflex.com.mx/vi-vn/:8808
saniflex.com.mx/vi-vn/:443
saniflex.com.mx/vi-vn/:80
saniflex.com.mx/vi-vn/:8844
saniflex.com.mx/vi-vn/:22
saniflex.com.mx/vi-vn/:53
sohda.org.uk/:6606
sohda.org.uk/:7707
sohda.org.uk/:8808
sohda.org.uk/:443
sohda.org.uk/:80
sohda.org.uk/:8844
sohda.org.uk/:22
sohda.org.uk/:53
korin.jp.net/:6606
korin.jp.net/:7707
korin.jp.net/:8808
korin.jp.net/:443
korin.jp.net/:80
korin.jp.net/:8844
korin.jp.net/:22
korin.jp.net/:53
mps.uk.com/:6606
mps.uk.com/:7707
mps.uk.com/:8808
mps.uk.com/:443
mps.uk.com/:80
mps.uk.com/:8844
mps.uk.com/:22
mps.uk.com/:53
88m.channel/:6606
88m.channel/:7707
88m.channel/:8808
88m.channel/:443
88m.channel/:80
88m.channel/:8844
88m.channel/:22
88m.channel/:53
plaatstaaldeband.nl/vi-vn/:6606
plaatstaaldeband.nl/vi-vn/:7707
plaatstaaldeband.nl/vi-vn/:8808
plaatstaaldeband.nl/vi-vn/:443
plaatstaaldeband.nl/vi-vn/:80
plaatstaaldeband.nl/vi-vn/:8844
plaatstaaldeband.nl/vi-vn/:22
plaatstaaldeband.nl/vi-vn/:53

Mutex

aieXEMo7dVbA

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
sample	family_asyncrat

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
AsyncClient.exe

File Explorer

AsyncClient.exe

.exe 45KB

AsyncClient.exe

IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
SHA256 4aacdc8a82a12de49bcd1fd3067f4b9182ad07a6f130e08dfe5f1b71de143f89
MD5 f2b589fbd0824a7ea006caa39b27ec99
SHA1 9dc0de5edd9edd056388f72800d9d226444963fd
SHA512 366e9bc3223af3e3f749740164732b11a6a33298c9a85b6aada6355e797f70368d12c7f344e7b5c471169770ecca93fc1def792c706e6fde73d79cbbb4af980a
SSDEEP 768:Auu8BTs78zihWUlIeYmo2qtNOjPGagAWOzjbFgX3inLZFervsBxHEEfp7cDZ5f+:Auu8BTsg/2eOTKTO3bCXSnNErvsBxPfB
TLSH
T1C7233C003BE8822BF2BE5F78ACF25145867AF2636603D64D1CC451DB5613FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Async RAT payload

rat
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

51262

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE

PDB paths

AsyncClient.exe

mscoree

dotnet