socks5systemz | 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795

Analysis

max time kernel
293s
max time network
254s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 05:03

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General

Target

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
Size

4.9MB
MD5

cd0ba9cf087f93c8a3c423241e8fead8
SHA1

5b81c3185672e5d74e8480ab5797861bfa593315
SHA256

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795
SHA512

f2202daf2eaa8179063002663415574653b7bcd78dceee2921e7778e8bcaf14cdde015c0425391872485409c5240e2bb1ee6aa5f5bb12740a22cbfc3ef88bc40
SSDEEP

98304:CCQmysanRBNYbbLMywtFw1o9j6UErdjmqdeT29v0KiFhAtVwThlngDo2Na+nTQxu:omt0q/LMyk9wqqdy0sKiPAtVWhJgTtTD

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/800-93-0x00000000024C0000-0x0000000002561000-memory.dmp family_socks5systemz
Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exe

pid process

2200 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
2788 vkfreeaudiosaver.exe
800 vkfreeaudiosaver.exe

resource	yara_rule
behavioral1/memory/800-93-0x00000000024C0000-0x0000000002561000-memory.dmp	family_socks5systemz

pid	process
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
2788	vkfreeaudiosaver.exe
800	vkfreeaudiosaver.exe

Loads dropped DLL 5 IoCs

Processes:

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

pid	process
1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 91.211.247.248
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

pid process

2200 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp

description	pid	process	target process
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 1992 wrote to memory of 2200	1992	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
PID 2200 wrote to memory of 2788	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 2788	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 2788	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 2788	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 800	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 800	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 800	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe
PID 2200 wrote to memory of 800	2200	4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp	vkfreeaudiosaver.exe

C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
"C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992

C:\Users\Admin\AppData\Local\Temp\is-QQ0GV.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
"C:\Users\Admin\AppData\Local\Temp\is-QQ0GV.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp" /SL5="$30144,4892726,54272,C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2200

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -i
3⤵
- Executes dropped EXE
PID:2788

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -s
3⤵
- Executes dropped EXE
PID:800

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
Filesize
3.2MB

MD5
c1b8d21a2214a04ef4cef9fd89d49ced

SHA1
91da09b0a8d00dbcf27ddcf3421cb904969db8e1

SHA256
cee35f451b6c88aa0acfc6669621683b54fb71799219be7a729a97a6db6c784a

SHA512
d6cae450cdd3857e511a45715e11daddb5a7a9a5ae028afcbbf4659bcf4383760e75cae97add7155a278f8d36ad260fb94606f5434a55e4c9db7ac2f3f3353ea

Download Submit
\Users\Admin\AppData\Local\Temp\is-2BVAS.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-2BVAS.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-QQ0GV.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp
Filesize
680KB

MD5
1a7fbe9723876a61fefe7f773c65e764

SHA1
5137048c3e0c14f0c7cc3bf82c03028ccb3e5d50

SHA256
fa413cdf3dcccae8ca1c65264878b4697bb88d7ccac4963dd75d99990a2f851b

SHA512
a906aef973d5ef18e078d9377555ff9d499fac2ffbca526d5708d95446bd89c31eb98e791dcde22c150a7df1c3d31a583fb9398da1e0cbc4677302e6a0a0af43

Download Submit
memory/800-76-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-79-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-114-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-133-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-130-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-127-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-124-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-72-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-111-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-121-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-118-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-138-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-108-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-83-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-86-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-89-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-92-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-93-0x00000000024C0000-0x0000000002561000-memory.dmp

Filesize
644KB

Download
memory/800-99-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-102-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/800-105-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/1992-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1992-74-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1992-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2200-80-0x00000000038B0000-0x0000000003BDB000-memory.dmp

Filesize
3.2MB

Download
memory/2200-75-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2200-64-0x00000000038B0000-0x0000000003BDB000-memory.dmp

Filesize
3.2MB

Download
memory/2200-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2788-70-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/2788-66-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download
memory/2788-65-0x0000000000400000-0x000000000072B000-memory.dmp

Filesize
3.2MB

Download