Malware Analysis Report

2024-11-15 05:01

Sample ID 240530-z6v93aaa41
Target 17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d
SHA256 17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d
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

17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d

Threat Level: Known bad

The file 17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Socks5Systemz

Detect Socks5Systemz Payload

Executes dropped EXE

Loads dropped DLL

Unexpected DNS network traffic destination

Checks installed software on the system

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 21:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 21:20

Reported

2024-05-30 21:22

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.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 45.155.250.90 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-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2284 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 2284 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 2284 wrote to memory of 1828 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 1828 wrote to memory of 3632 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1828 wrote to memory of 3632 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1828 wrote to memory of 3632 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1828 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1828 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1828 wrote to memory of 3996 N/A C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe

"C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe"

C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp

"C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp" /SL5="$401C8,5929882,54272,C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
SE 45.155.250.90:53 dtjpdsq.info udp
BG 79.110.49.184:80 dtjpdsq.info tcp
US 8.8.8.8:53 90.250.155.45.in-addr.arpa udp
BG 79.110.49.184:80 dtjpdsq.info tcp
BG 79.110.49.184:80 dtjpdsq.info tcp
US 8.8.8.8:53 171.117.168.52.in-addr.arpa udp

Files

memory/2284-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2284-2-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-KJ04G.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

memory/1828-10-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-2A0NV.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Users\Admin\AppData\Local\Temp\is-2A0NV.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

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

MD5 25dcec3daa5700760ae25bdda9220557
SHA1 c3975f08d89811f107e329010620a24e6b0c0a2b
SHA256 18f6bc5455a01c6df3059075c10939daa970225b4a3223ef45882101dc8b60b5
SHA512 fb4bcb2f76f94d0bd66aa5098defc20842173d2abc3892a903ad39fd6f8f52898b3becc1530448bcb2c50e5fad49368ec2bbfc8fcb3fdd41faedc71fcf301333

memory/3632-65-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3632-66-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3632-69-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3632-71-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-74-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/2284-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1828-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3996-77-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-80-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-83-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-86-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-89-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-92-0x0000000000A90000-0x0000000000B32000-memory.dmp

memory/3996-95-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-100-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-103-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-106-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-109-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-112-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-115-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-118-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3996-121-0x0000000000400000-0x00000000007A4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 21:20

Reported

2024-05-30 21:22

Platform

win11-20240426-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.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 141.98.234.31 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-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 924 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 924 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 924 wrote to memory of 1904 N/A C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp
PID 1904 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1904 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1904 wrote to memory of 4404 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1904 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1904 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 1904 wrote to memory of 3872 N/A C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe

"C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.exe"

C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp

"C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp" /SL5="$50100,5929882,54272,C:\Users\Admin\AppData\Local\Temp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.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
HK 141.98.234.31:53 buuvjur.com udp
BG 79.110.49.184:80 buuvjur.com tcp
US 8.8.8.8:53 31.234.98.141.in-addr.arpa udp
BG 79.110.49.184:80 buuvjur.com tcp
BG 79.110.49.184:80 buuvjur.com tcp

Files

memory/924-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/924-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-EP43D.tmp\17bb3ce56eb7667aed7471c54379944a57a6233e1a36d4fd8c76110c60b87a6d.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

C:\Users\Admin\AppData\Local\Temp\is-RG0EK.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

memory/1904-22-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-RG0EK.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 25dcec3daa5700760ae25bdda9220557
SHA1 c3975f08d89811f107e329010620a24e6b0c0a2b
SHA256 18f6bc5455a01c6df3059075c10939daa970225b4a3223ef45882101dc8b60b5
SHA512 fb4bcb2f76f94d0bd66aa5098defc20842173d2abc3892a903ad39fd6f8f52898b3becc1530448bcb2c50e5fad49368ec2bbfc8fcb3fdd41faedc71fcf301333

memory/4404-66-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/4404-65-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/4404-69-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-74-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/4404-71-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/924-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/1904-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3872-77-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-80-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-83-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-86-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-89-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-91-0x00000000029F0000-0x0000000002A92000-memory.dmp

memory/3872-94-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-99-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-102-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-105-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-108-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-111-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-114-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-117-0x0000000000400000-0x00000000007A4000-memory.dmp

memory/3872-120-0x0000000000400000-0x00000000007A4000-memory.dmp