socks5systemz | 83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8

Analysis

max time kernel
292s
max time network
247s
platform
windows7_x64
resource
win7-20240419-en
resource tags

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

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General

Target

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe
Size

5.2MB
MD5

55db085a5e2ae74fba99159dd4c7d159
SHA1

fd7fc239dc4355c3a15268958c21708f214d1cf2
SHA256

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8
SHA512

689d4811f650ed1bd424851b5a730b91bf8104c75719901f053ea4f7c021538baa05b88a7325a29a6b2ed3bfa405767e30a1b9ca2a8e001b8df5dc646305f1c3
SSDEEP

98304:CACzFqEtInZjnKwc3s+HO3J2cxQal2ANiSx7TWJoDfiQx9W:pkl6y3i3J2cmm2CByobiQa

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/2540-92-0x00000000027E0000-0x0000000002882000-memory.dmp family_socks5systemz
Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmpvkfreeaudiosaver32_64.exevkfreeaudiosaver32_64.exe

pid process

2312 83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
2764 vkfreeaudiosaver32_64.exe
2540 vkfreeaudiosaver32_64.exe

resource	yara_rule
behavioral1/memory/2540-92-0x00000000027E0000-0x0000000002882000-memory.dmp	family_socks5systemz

pid	process
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
2764	vkfreeaudiosaver32_64.exe
2540	vkfreeaudiosaver32_64.exe

Loads dropped DLL 5 IoCs

Processes:

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp

pid	process
3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.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:

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp

pid process

2312 83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp

description	pid	process	target process
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 3000 wrote to memory of 2312	3000	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
PID 2312 wrote to memory of 2764	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2764	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2764	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2764	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2540	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2540	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2540	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe
PID 2312 wrote to memory of 2540	2312	83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp	vkfreeaudiosaver32_64.exe

C:\Users\Admin\AppData\Local\Temp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe
"C:\Users\Admin\AppData\Local\Temp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3000

C:\Users\Admin\AppData\Local\Temp\is-U47TI.tmp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
"C:\Users\Admin\AppData\Local\Temp\is-U47TI.tmp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp" /SL5="$400F4,5154567,54272,C:\Users\Admin\AppData\Local\Temp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2312

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -i
3⤵
- Executes dropped EXE
PID:2764

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -s
3⤵
- Executes dropped EXE
PID:2540

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\is-U47TI.tmp\83a475e89ba47df9bc3b5e27bb3af2928da01fc25a2de4d672db2e61b22d95e8.tmp
Filesize
680KB

MD5
70295416713c0ce535665d806e3d54ac

SHA1
fe13c334ec67412f41fe190f93da7d45a57eccbd

SHA256
958c5f807a8268b09828e0f02a6c75a92f3a87dbd1853eb62e5996db990ba2ba

SHA512
2336597fb6ffe697ba62cd931479108556fee44319176989f961ae43aea62b111df6870a169202c6d960aface42779a2f82db48a69fe2072b711a512812f925c

Download Submit
\Users\Admin\AppData\Local\Temp\is-0D0U4.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-0D0U4.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
Filesize
3.7MB

MD5
a4314810759c9456741ee5422dec7d40

SHA1
134e37ab440160748bf18f7b4118bfa9e8462089

SHA256
f6e0869136b1793e3381ad5f47edfd2de8846688891958b691348a09d0e4a00f

SHA512
9b12747794263a5c5fda629ad4f8a7b858aa371aae9a8ca3917f13f9a4f2cdb7bfba1d4b4c1099bcd63da7c077f6bc95f27bdf2afb299c1e2e2a1d799526980c

Download Submit
memory/2312-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2312-79-0x00000000042F0000-0x000000000469E000-memory.dmp

Filesize
3.7MB

Download
memory/2312-19-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2312-64-0x00000000042F0000-0x000000000469E000-memory.dmp

Filesize
3.7MB

Download
memory/2540-104-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-92-0x00000000027E0000-0x0000000002882000-memory.dmp

Filesize
648KB

Download
memory/2540-137-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-71-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-132-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-129-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-75-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-78-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-126-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-82-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-85-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-88-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-91-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-123-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-98-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-101-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-120-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-107-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-110-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-113-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2540-117-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2764-66-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2764-65-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/2764-69-0x0000000000400000-0x00000000007AE000-memory.dmp

Filesize
3.7MB

Download
memory/3000-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3000-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3000-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download