socks5systemz | b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7

Analysis

max time kernel
141s
max time network
127s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
29-06-2024 20:34

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General

Target

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe
Size

5.2MB
MD5

9510b222bfe811a0e9cb84324deab879
SHA1

0baa5dfb98f1b56c45e560bfa755123c9631f22c
SHA256

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7
SHA512

56425a7ecef65418dc85b6ae315b3ce8ff25f151d4c7bfe4e10209c0b466b6157cab73a38004a98a4bc5adc977079fbdd31c34d01004766e80d5b107e140f37e
SSDEEP

98304:Cmd9RXB2d75+/2UTq8Z+T0ics1UPPIYZk3xGaZsmbOqLT6P8fp0PsS1eQx9W:7AlKTq77nCPvK3ovFeThh2eQa

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2068-87-0x0000000000B10000-0x0000000000BB2000-memory.dmp	family_socks5systemz
behavioral2/memory/2068-111-0x0000000000B10000-0x0000000000BB2000-memory.dmp	family_socks5systemz
behavioral2/memory/2068-112-0x0000000000B10000-0x0000000000BB2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmpvkfreeaudiosaver32_64.exevkfreeaudiosaver32_64.exe

pid process

3400 b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
4684 vkfreeaudiosaver32_64.exe
2068 vkfreeaudiosaver32_64.exe
Loads dropped DLL 1 IoCs

Processes:

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

pid process

3400 b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.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:

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

pid process

3400 b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

pid	process
3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
4684	vkfreeaudiosaver32_64.exe
2068	vkfreeaudiosaver32_64.exe

pid	process
3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exeb4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp

description	pid	process	target process
PID 4924 wrote to memory of 3400	4924	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
PID 4924 wrote to memory of 3400	4924	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
PID 4924 wrote to memory of 3400	4924	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
PID 3400 wrote to memory of 4684	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe
PID 3400 wrote to memory of 4684	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe
PID 3400 wrote to memory of 4684	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe
PID 3400 wrote to memory of 2068	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe
PID 3400 wrote to memory of 2068	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe
PID 3400 wrote to memory of 2068	3400	b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp	vkfreeaudiosaver32_64.exe

C:\Users\Admin\AppData\Local\Temp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe
"C:\Users\Admin\AppData\Local\Temp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4924

C:\Users\Admin\AppData\Local\Temp\is-43V8R.tmp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
"C:\Users\Admin\AppData\Local\Temp\is-43V8R.tmp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp" /SL5="$50178,5195968,54272,C:\Users\Admin\AppData\Local\Temp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3400

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:4684

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:2068

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\Temp\is-1KJG7.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-43V8R.tmp\b4bae79bb28b1f8bcabbb5ba1bcd43809997029de1bb5c9d0c3900fde99272e7.tmp
Filesize
680KB

MD5
70295416713c0ce535665d806e3d54ac

SHA1
fe13c334ec67412f41fe190f93da7d45a57eccbd

SHA256
958c5f807a8268b09828e0f02a6c75a92f3a87dbd1853eb62e5996db990ba2ba

SHA512
2336597fb6ffe697ba62cd931479108556fee44319176989f961ae43aea62b111df6870a169202c6d960aface42779a2f82db48a69fe2072b711a512812f925c

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

MD5
e30928bf7a20de19dd0464fd6f0f4bc6

SHA1
cae8125939ca37c263ca50d5427c134d220b078e

SHA256
ab2d25cb77f4b252a5a4b1bec2c10023e06d78173b27936b25e3b1c29a47ef81

SHA512
9c794bb45970baf3043ec05cb382bfc43e1a88a523bcf556d86a77f16100b0b4550f19589cb1be10eced8773b3494ac50f4aa5dade3493c1ba062cf1f4c67f68

Download Submit
memory/2068-101-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-104-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-78-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-119-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-81-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-116-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-112-0x0000000000B10000-0x0000000000BB2000-memory.dmp

Filesize
648KB

Download
memory/2068-66-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-68-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-111-0x0000000000B10000-0x0000000000BB2000-memory.dmp

Filesize
648KB

Download
memory/2068-110-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-84-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-74-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-75-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-107-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-98-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-71-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-87-0x0000000000B10000-0x0000000000BB2000-memory.dmp

Filesize
648KB

Download
memory/2068-90-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/2068-95-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/3400-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3400-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4684-64-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/4684-60-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/4684-63-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/4684-59-0x0000000000400000-0x00000000007B6000-memory.dmp

Filesize
3.7MB

Download
memory/4924-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4924-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4924-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download