Malware Analysis Report

2024-11-15 05:00

Sample ID 240530-xtyhjshf57
Target 41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70
SHA256 41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70
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

41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70

Threat Level: Known bad

The file 41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70 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

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 19:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 19:09

Reported

2024-05-30 19:11

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.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 152.89.198.214 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-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4940 wrote to memory of 5108 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 4940 wrote to memory of 5108 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 4940 wrote to memory of 5108 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 5108 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 5108 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 5108 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 5108 wrote to memory of 3268 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 5108 wrote to memory of 3268 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 5108 wrote to memory of 3268 N/A C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe

"C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe"

C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp

"C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp" /SL5="$7011E,5775656,54272,C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.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 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.72:443 www.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 72.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
RU 152.89.198.214:53 ccnymde.net udp
BG 79.110.49.184:80 ccnymde.net tcp
US 8.8.8.8:53 214.198.89.152.in-addr.arpa udp
BG 79.110.49.184:80 ccnymde.net tcp
US 8.8.8.8:53 170.117.168.52.in-addr.arpa udp
BG 79.110.49.184:80 ccnymde.net tcp

Files

memory/4940-2-0x0000000000401000-0x000000000040B000-memory.dmp

memory/4940-0-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-2MQ08.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

C:\Users\Admin\AppData\Local\Temp\is-EHQB8.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

memory/5108-19-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-EHQB8.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 f7c5f033bae9038db16341c15f530d12
SHA1 2e4936c96f8e8c3f82a322db4f8e2c975df75e58
SHA256 318da3b148a41d15ee1f60c5fdb71145a3459bd673971503b5fc19c7bdbd4683
SHA512 5967a6699f4ce7255505632f8c9462dcb55335a22cba903a20a11fad66d322864f2d351a434e386b53f62350cba1d89163c6fa08ca6f816c43d6378c42e133a4

memory/396-66-0x0000000000400000-0x0000000000776000-memory.dmp

memory/396-69-0x0000000000400000-0x0000000000776000-memory.dmp

memory/396-70-0x0000000000400000-0x0000000000776000-memory.dmp

memory/396-65-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-74-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-73-0x0000000000400000-0x0000000000776000-memory.dmp

memory/4940-75-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5108-76-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/3268-77-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-80-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-81-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-84-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-87-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-90-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-93-0x00000000009D0000-0x0000000000A72000-memory.dmp

memory/3268-96-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-101-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-104-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-107-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-110-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-113-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-116-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-119-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3268-122-0x0000000000400000-0x0000000000776000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 19:09

Reported

2024-05-30 19:11

Platform

win11-20240426-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.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-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2656 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 2656 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 2656 wrote to memory of 396 N/A C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp
PID 396 wrote to memory of 3900 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 396 wrote to memory of 3900 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 396 wrote to memory of 3900 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 396 wrote to memory of 5052 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 396 wrote to memory of 5052 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe
PID 396 wrote to memory of 5052 N/A C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe

"C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.exe"

C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp

"C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp" /SL5="$4023E,5775656,54272,C:\Users\Admin\AppData\Local\Temp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.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
NL 52.111.243.31:443 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
HK 141.98.234.31:53 ejmpvdx.ua udp
BG 79.110.49.184:80 ejmpvdx.ua tcp
BG 79.110.49.184:80 ejmpvdx.ua tcp
BG 79.110.49.184:80 ejmpvdx.ua tcp

Files

memory/2656-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2656-3-0x0000000000401000-0x000000000040B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-0I97N.tmp\41acf19ac2b7c8deacf14927dc7fbe9744dc488d3d080ea4aafb2c46e23e3f70.tmp

MD5 ef9105d68de970efad785e01b21e4e2b
SHA1 7fe8801a3e86814972da63a7a943bdc5e31d8888
SHA256 381198ca0669ab760f6f9b84e39c39ab5e870f65d17d03ed0dc572a1c602364a
SHA512 e388cbf32a4d833c0e4c6c1a129515b4d12eac5b333f2aec39e741d3a0da856c5923d47cf4d3083ad030f7f07b9214261b2b9119720920dd42929eeb617e779c

memory/396-11-0x0000000000400000-0x00000000004BA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-E51J5.tmp\_isetup\_isdecmp.dll

MD5 b6f11a0ab7715f570f45900a1fe84732
SHA1 77b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256 e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA512 78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

C:\Users\Admin\AppData\Local\Temp\is-E51J5.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 f7c5f033bae9038db16341c15f530d12
SHA1 2e4936c96f8e8c3f82a322db4f8e2c975df75e58
SHA256 318da3b148a41d15ee1f60c5fdb71145a3459bd673971503b5fc19c7bdbd4683
SHA512 5967a6699f4ce7255505632f8c9462dcb55335a22cba903a20a11fad66d322864f2d351a434e386b53f62350cba1d89163c6fa08ca6f816c43d6378c42e133a4

memory/3900-69-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3900-71-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-73-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3900-66-0x0000000000400000-0x0000000000776000-memory.dmp

memory/3900-65-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-75-0x0000000000400000-0x0000000000776000-memory.dmp

memory/2656-76-0x0000000000400000-0x0000000000414000-memory.dmp

memory/396-77-0x0000000000400000-0x00000000004BA000-memory.dmp

memory/5052-78-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-81-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-82-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-85-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-88-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-91-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-94-0x0000000000A80000-0x0000000000B22000-memory.dmp

memory/5052-97-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-102-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-105-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-108-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-111-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-114-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-117-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-120-0x0000000000400000-0x0000000000776000-memory.dmp

memory/5052-123-0x0000000000400000-0x0000000000776000-memory.dmp