asyncrat | AsyncClient[.]exe

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General

Target
AsyncClient.exe
Size 45KB
Sample260623-gcfcmsav4n
SHA256 6a567e080f83f24d410c54965f7d0bd01485e82fae6cc84dea270295ab3e052d
MD5 ff19eec851ec19837dc4d85d5abc33be
SHA1 6fcdbe7f41818915e15a62f5f431cbc2dc08ffc4
SHA512 6bd5a76c14bd2052441bf9cacf409833edfc5e26db2e59182ab76ddf20b6a9b515c7ae3f540e9c1706a4404ee2538319b59384d88ac6f1a855948bd0746c3d4b
SSDEEP 768:Hu0LRTZwfEgWUKjapmo2qjTOjPGagAWOzjbFgX3i+9uby7R4cDZQf+:Hu0LRTZI326OTKTO3bCXSY79dQf+
TLSH
T141231A003BE8822BF2BE4FB89CF26145467AF6672603D58D1CC441D65B13FC69A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

rat default asyncrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

ibopecontact.com.co:6606
ibopecontact.com.co:7707
ibopecontact.com.co:8808
ibopecontact.com.co:443
ibopecontact.com.co:80
ibopecontact.com.co:8844
ibopecontact.com.co:22
ibopecontact.com.co:53
fkpq.cn.com:6606
fkpq.cn.com:7707
fkpq.cn.com:8808
fkpq.cn.com:443
fkpq.cn.com:80
fkpq.cn.com:8844
fkpq.cn.com:22
fkpq.cn.com:53
kittenopvangnoordholland.nl:6606
kittenopvangnoordholland.nl:7707
kittenopvangnoordholland.nl:8808
kittenopvangnoordholland.nl:443
kittenopvangnoordholland.nl:80
kittenopvangnoordholland.nl:8844
kittenopvangnoordholland.nl:22
kittenopvangnoordholland.nl:53
andema.in:6606
andema.in:7707
andema.in:8808
andema.in:443
andema.in:80
andema.in:8844
andema.in:22
andema.in:53
coverit.com.co:6606
coverit.com.co:7707
coverit.com.co:8808
coverit.com.co:443
coverit.com.co:80
coverit.com.co:8844
coverit.com.co:22
coverit.com.co:53
keaz.co:6606
keaz.co:7707
keaz.co:8808
keaz.co:443
keaz.co:80
keaz.co:8844
keaz.co:22
keaz.co:53
stablefuel.io:6606
stablefuel.io:7707
stablefuel.io:8808
stablefuel.io:443
stablefuel.io:80
stablefuel.io:8844
stablefuel.io:22
stablefuel.io:53
biosystem.org.uk:6606
biosystem.org.uk:7707
biosystem.org.uk:8808
biosystem.org.uk:443
biosystem.org.uk:80
biosystem.org.uk:8844
biosystem.org.uk:22
biosystem.org.uk:53
baikalika.io:6606
baikalika.io:7707
baikalika.io:8808
baikalika.io:443
baikalika.io:80
baikalika.io:8844
baikalika.io:22
baikalika.io:53
boileddown.me:6606
boileddown.me:7707
boileddown.me:8808
boileddown.me:443
boileddown.me:80
boileddown.me:8844
boileddown.me:22
boileddown.me:53
123b-jp.com:6606
123b-jp.com:7707
123b-jp.com:8808
123b-jp.com:443
123b-jp.com:80
123b-jp.com:8844
123b-jp.com:22
123b-jp.com:53
www.ee88.marketing:6606
www.ee88.marketing:7707
www.ee88.marketing:8808
www.ee88.marketing:443
www.ee88.marketing:80
www.ee88.marketing:8844
www.ee88.marketing:22
www.ee88.marketing:53
dzagi.me:6606
dzagi.me:7707
dzagi.me:8808
dzagi.me:443
dzagi.me:80
dzagi.me:8844
dzagi.me:22
dzagi.me:53
epa.com.tw:6606
epa.com.tw:7707
epa.com.tw:8808
epa.com.tw:443
epa.com.tw:80
epa.com.tw:8844
epa.com.tw:22
epa.com.tw:53
123bo.co.uk:6606
123bo.co.uk:7707
123bo.co.uk:8808
123bo.co.uk:443
123bo.co.uk:80
123bo.co.uk:8844
123bo.co.uk:22
123bo.co.uk:53
covid.eu.com:6606
covid.eu.com:7707
covid.eu.com:8808
covid.eu.com:443
covid.eu.com:80
covid.eu.com:8844
covid.eu.com:22
covid.eu.com:53
88m.st:6606
88m.st:7707
88m.st:8808
88m.st:443
88m.st:80
88m.st:8844
88m.st:22
88m.st:53
enk.uk.com:6606
enk.uk.com:7707
enk.uk.com:8808
enk.uk.com:443
enk.uk.com:80
enk.uk.com:8844
enk.uk.com:22
enk.uk.com:53
88m.hair:6606
88m.hair:7707
88m.hair:8808
88m.hair:443
88m.hair:80
88m.hair:8844
88m.hair:22
88m.hair:53

Mutex

FtTRmAL1FxCo

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 6a567e080f83f24d410c54965f7d0bd01485e82fae6cc84dea270295ab3e052d
MD5 ff19eec851ec19837dc4d85d5abc33be
SHA1 6fcdbe7f41818915e15a62f5f431cbc2dc08ffc4
SHA512 6bd5a76c14bd2052441bf9cacf409833edfc5e26db2e59182ab76ddf20b6a9b515c7ae3f540e9c1706a4404ee2538319b59384d88ac6f1a855948bd0746c3d4b
SSDEEP 768:Hu0LRTZwfEgWUKjapmo2qjTOjPGagAWOzjbFgX3i+9uby7R4cDZQf+:Hu0LRTZI326OTKTO3bCXSY79dQf+
TLSH
T141231A003BE8822BF2BE4FB89CF26145467AF6672603D58D1CC441D65B13FC69A526FE
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

51614

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