socks5systemz | 8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942

General

Target

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe
Size

4.9MB
MD5

8554a3f80004240087be4f7b1fec4f95
SHA1

66504e5e5ab085802017c91ef0734d90ae416445
SHA256

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942
SHA512

009b65a03a93adb5f204e333feb286a506081b83fce511de3daa82e37025c900cd948d58661155bfb3d84150c609ce55984a391deab41786f50ec320e968e033
SSDEEP

98304:mjrfXnaIkLROBxEkYcOfcitHBpTBGcJRyJPZfN8OnPFzwVjWB0Vc:mrfcLMBqhcOz/BGuRyx/n9MxY0Vc

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvdujem.com

http://bvdujem.com/search/?q=67e28dd8645fa72f495daa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff717c0ef9c9a3f

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1724-84-0x00000000024F0000-0x0000000002592000-memory.dmp	family_socks5systemz

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

Processes:

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmpm4atomp3converter.exem4atomp3converter.exe

pid process

4168 8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
5004 m4atomp3converter.exe
1724 m4atomp3converter.exe
Loads dropped DLL 1 IoCs

Processes:

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

pid process

4168 8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.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 141.98.234.31
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:

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

pid process

4168 8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

pid	process
4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
5004	m4atomp3converter.exe
1724	m4atomp3converter.exe

pid	process
4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp

description	pid	process	target process
PID 1296 wrote to memory of 4168	1296	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
PID 1296 wrote to memory of 4168	1296	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
PID 1296 wrote to memory of 4168	1296	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
PID 4168 wrote to memory of 5004	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe
PID 4168 wrote to memory of 5004	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe
PID 4168 wrote to memory of 5004	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe
PID 4168 wrote to memory of 1724	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe
PID 4168 wrote to memory of 1724	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe
PID 4168 wrote to memory of 1724	4168	8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp	m4atomp3converter.exe

C:\Users\Admin\AppData\Local\Temp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe
"C:\Users\Admin\AppData\Local\Temp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1296

C:\Users\Admin\AppData\Local\Temp\is-33PMB.tmp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
"C:\Users\Admin\AppData\Local\Temp\is-33PMB.tmp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp" /SL5="$60138,4906577,54272,C:\Users\Admin\AppData\Local\Temp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4168

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
3⤵
- Executes dropped EXE
PID:5004

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
3⤵
- Executes dropped EXE
PID:1724

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
Filesize
3.1MB

MD5
af9589e729cf80f8e5fd2cfd02b4bff5

SHA1
17d4b36edbe1e70038da74ed802a2baf7dbfe92c

SHA256
1b49ff0eab248953bf8d8093d540beff958a234f778cafb62f52e73cb15fb028

SHA512
9f726899decd150ea2a15109800ac127ab1e6204735ff28c1c7873efd0bf8d5dea820cac2897e560dff90d6332af98541a6b719281119a774c71cea11a53c1c9

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-33PMB.tmp\8cefd2ac132eafd7dc6bd0217f9b5606be09805943933179960a927dd18ea942.tmp
Filesize
680KB

MD5
283da5c763c54b41092d9fe0d244b491

SHA1
d5e6a5b76a18c5a1d68244f2c3697bd8881fcf03

SHA256
339d2ff372992255baddd6d21cc15045b42780b25d251f570480e1aacdd00ad9

SHA512
306815b5fd5c387ffd9705097271edf5851cee7c28d1bc707813ce26714e8f722b8a34f73c43903ab6e7303dafc6ab6fa48262e487d86124c037879618cbd45a

Download Submit
\Users\Admin\AppData\Local\Temp\is-U0PT3.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1296-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1296-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1296-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1724-106-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-91-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-130-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-66-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-125-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-122-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-69-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-72-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-75-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-78-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-81-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-84-0x00000000024F0000-0x0000000002592000-memory.dmp

Filesize
648KB

Download
memory/1724-86-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-119-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-94-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-97-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-100-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-103-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-116-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-110-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/1724-113-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/4168-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4168-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/5004-60-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/5004-59-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download
memory/5004-63-0x0000000000400000-0x0000000000715000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing