Malware Analysis Report

2024-10-19 06:56

Sample ID 240627-v79fvsscmf
Target ClientAny.exe
SHA256 f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32
Tags
rat svchost.exe asyncrat discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32

Threat Level: Known bad

The file ClientAny.exe was found to be: Known bad.

Malicious Activity Summary

rat svchost.exe asyncrat discovery

Asyncrat family

AsyncRat

Async RAT payload

Async RAT payload

Checks computer location settings

Executes dropped EXE

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious use of SetWindowsHookEx

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-27 17:39

Signatures

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Asyncrat family

asyncrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-27 17:39

Reported

2024-06-27 17:41

Platform

win7-20240221-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ClientAny.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1296 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\System32\cmd.exe
PID 1296 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\System32\cmd.exe
PID 1296 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\System32\cmd.exe
PID 1296 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\system32\cmd.exe
PID 1296 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\system32\cmd.exe
PID 1296 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe C:\Windows\system32\cmd.exe
PID 2616 wrote to memory of 2420 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2616 wrote to memory of 2420 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2616 wrote to memory of 2420 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2204 wrote to memory of 2532 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2204 wrote to memory of 2532 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2204 wrote to memory of 2532 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2616 wrote to memory of 2676 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 2616 wrote to memory of 2676 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe
PID 2616 wrote to memory of 2676 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\svchost.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\ClientAny.exe

"C:\Users\Admin\AppData\Local\Temp\ClientAny.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit

C:\Windows\system32\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1526.tmp.bat""

C:\Windows\system32\timeout.exe

timeout 3

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'

C:\Users\Admin\AppData\Roaming\svchost.exe

"C:\Users\Admin\AppData\Roaming\svchost.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
TR 2.58.84.229:80 tcp
N/A 127.0.0.1:80 tcp

Files

memory/1296-0-0x000007FEF5CB3000-0x000007FEF5CB4000-memory.dmp

memory/1296-1-0x00000000012E0000-0x00000000012FC000-memory.dmp

memory/1296-3-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp1526.tmp.bat

MD5 d60b36e388f072851a06b89f07ce1f6e
SHA1 46bd78809a47b7a5ec904d36f291938e88ae3aea
SHA256 f573bce7307f9ea9309ed3c6f6ee240f929037eeeb3ea06d3007a716cae320c1
SHA512 6a944f2ff71c625eb1e1c2acad560f1c0492bcb3dda801a502880fe5276f439d2aad47fe26a57bcef1d3af36e5748de615b5debbe95cd6f6d4a8158cbaf3b4c5

memory/1296-13-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

memory/1296-14-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

C:\Users\Admin\AppData\Roaming\svchost.exe

MD5 51a43245ecf3a5f9871d4e2003a36032
SHA1 14f0576f0639189c6252467aba08eb8d8e557578
SHA256 f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32
SHA512 68ebffa51c9aca71cb4de71d287a434de15dd3f04ffde513631da3bb6f348614bf9e13b99612e90ff07b1d70f05e5732d76457195e8432b4420d08913614b0fe

memory/2676-18-0x0000000000150000-0x000000000016C000-memory.dmp

C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

MD5 cf759e4c5f14fe3eec41b87ed756cea8
SHA1 c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512 c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar8A0E.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-27 17:39

Reported

2024-06-27 17:41

Platform

win10v2004-20240508-en

Max time kernel

94s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ClientAny.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ClientAny.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\ClientAny.exe

"C:\Users\Admin\AppData\Local\Temp\ClientAny.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp414F.tmp.bat""

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\svchost.exe

"C:\Users\Admin\AppData\Roaming\svchost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:80 tcp
TR 2.58.84.229:80 tcp
US 8.8.8.8:53 229.84.58.2.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/3216-0-0x0000000000060000-0x000000000007C000-memory.dmp

memory/3216-1-0x00007FF816413000-0x00007FF816415000-memory.dmp

memory/3216-3-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

memory/3216-8-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

memory/3216-9-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp414F.tmp.bat

MD5 84a195bd64198facdc063570a0ca0248
SHA1 7edc45d42fa064b4d5fc4f22cb75df7fdeec2085
SHA256 ebd283fbf855416643e2c08fecc11cccefffe1508cdb66e3af07da53d75a1357
SHA512 be907960fdd003f3bd727600015890b875211bb89133a62605c07352f1ee956b4cc63640694d5adcf4de92cc6238f9bde9c3721cbb42e3890f78416b1eae9a48

C:\Users\Admin\AppData\Roaming\svchost.exe

MD5 51a43245ecf3a5f9871d4e2003a36032
SHA1 14f0576f0639189c6252467aba08eb8d8e557578
SHA256 f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32
SHA512 68ebffa51c9aca71cb4de71d287a434de15dd3f04ffde513631da3bb6f348614bf9e13b99612e90ff07b1d70f05e5732d76457195e8432b4420d08913614b0fe

C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

MD5 cf759e4c5f14fe3eec41b87ed756cea8
SHA1 c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512 c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b