Malware Analysis Report

2024-11-15 05:01

Sample ID 240530-zj9tyahf2x
Target 783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716
SHA256 783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716
Tags
socks5systemz botnet 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

783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716

Threat Level: Known bad

The file 783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716 was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Executes dropped EXE

Loads dropped DLL

Unexpected DNS network traffic destination

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 20:46

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 20:46

Reported

2024-05-30 20:48

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

Signatures

Detect Socks5Systemz Payload

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

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3280 wrote to memory of 3564 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 3280 wrote to memory of 3564 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 3280 wrote to memory of 3564 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 3564 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3564 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3564 wrote to memory of 1048 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3564 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3564 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 3564 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe

"C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp

"C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp" /SL5="$401D4,5611634,54272,C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 131.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
LT 91.211.247.248:53 bfpbhrb.com udp
BG 79.110.49.184:80 bfpbhrb.com tcp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp
BG 79.110.49.184:80 bfpbhrb.com tcp
US 8.8.8.8:53 6.173.189.20.in-addr.arpa udp
BG 79.110.49.184:80 bfpbhrb.com tcp

Files

memory/3280-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3280-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-3JT4R.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

memory/3564-8-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-L76H8.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

C:\Users\Admin\AppData\Local\Temp\is-L76H8.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 712409ef648de80b6f5831d2c93d2f14
SHA1 19a6b963be9d191012c5df082aca3e5a19854849
SHA256 71756cf2615ed001add675034ef700b598ee981ec718a908c82c25610cc27389
SHA512 aa91a100db5d9181f417f2fafa730c6eeb16f1e2252079e869638a4a6bdfa8d1b30571d30cbced274be2e6c0a4760461caddf7654ce979b899c09c0bf5e30677

memory/1048-65-0x0000000000400000-0x0000000000755000-memory.dmp

memory/1048-66-0x0000000000400000-0x0000000000755000-memory.dmp

memory/1048-71-0x0000000000400000-0x0000000000755000-memory.dmp

memory/1048-70-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-74-0x0000000000400000-0x0000000000755000-memory.dmp

memory/3280-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/3564-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/4156-77-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-80-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-83-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-86-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-89-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-92-0x0000000000A30000-0x0000000000AD2000-memory.dmp

memory/4156-94-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-99-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-102-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-105-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-108-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-111-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-114-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-117-0x0000000000400000-0x0000000000755000-memory.dmp

memory/4156-120-0x0000000000400000-0x0000000000755000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 20:46

Reported

2024-05-30 20:48

Platform

win11-20240508-en

Max time kernel

149s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

Signatures

Detect Socks5Systemz Payload

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

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1956 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 1956 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 1956 wrote to memory of 2020 N/A C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp
PID 2020 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 2020 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 2020 wrote to memory of 2320 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 2020 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 2020 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 2020 wrote to memory of 908 N/A C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe

"C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp

"C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp" /SL5="$5015C,5611634,54272,C:\Users\Admin\AppData\Local\Temp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.exe"

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s

Network

Country Destination Domain Proto
LT 91.211.247.248:53 buwtqqe.com udp
BG 79.110.49.184:80 buwtqqe.com tcp
BG 79.110.49.184:80 buwtqqe.com tcp
BG 79.110.49.184:80 buwtqqe.com tcp

Files

memory/1956-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1956-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-KHEHK.tmp\783c1d97dde6a73f76e0ef316048685e822c78a455b80e9041a2cb55005ca716.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

memory/2020-22-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-142KP.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Temp\is-142KP.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

MD5 712409ef648de80b6f5831d2c93d2f14
SHA1 19a6b963be9d191012c5df082aca3e5a19854849
SHA256 71756cf2615ed001add675034ef700b598ee981ec718a908c82c25610cc27389
SHA512 aa91a100db5d9181f417f2fafa730c6eeb16f1e2252079e869638a4a6bdfa8d1b30571d30cbced274be2e6c0a4760461caddf7654ce979b899c09c0bf5e30677

memory/2320-69-0x0000000000400000-0x0000000000755000-memory.dmp

memory/2320-71-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-74-0x0000000000400000-0x0000000000755000-memory.dmp

memory/2320-66-0x0000000000400000-0x0000000000755000-memory.dmp

memory/2320-65-0x0000000000400000-0x0000000000755000-memory.dmp

memory/1956-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2020-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/908-77-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-80-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-83-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-86-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-89-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-92-0x0000000002640000-0x00000000026E2000-memory.dmp

memory/908-95-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-100-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-103-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-106-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-109-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-112-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-115-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-118-0x0000000000400000-0x0000000000755000-memory.dmp

memory/908-121-0x0000000000400000-0x0000000000755000-memory.dmp