socks5systemz | 68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3

General

Target

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe
Size

4.9MB
MD5

f4088d2b6c196566cec6713b8a472c8d
SHA1

f75f15387abde865bb0f2e55d4395f18eefa41bc
SHA256

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3
SHA512

4f5e2e71036c4ebcef9383ee2430f325f796b7669959957116fad03866a91d2bed916cea0e76e9c0682f993131933911a4438aa7f207763a8742744e4cb9d374
SSDEEP

98304:mRZmudq2wJNuPXeh3RO794gBeG4ZsV7dow2hO6ETxtajRyvLGQ0pAmt86tI:rqgw2h36yg4HK7do66QrwBAR

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bfnekat.com

http://bfnekat.com/search/?q=67e28dd86e09a721465dff1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff712c5ec969b3b

http://bfnekat.com/search/?q=67e28dd86e09a721465dff1c7c27d78406abdd88be4b12eab517aa5c96bd86ec958f4d885a8bbc896c58e713bc90c91136b5281fc235a925ed3e54d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d993ece6c9716

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4152-86-0x0000000000A70000-0x0000000000B12000-memory.dmp	family_socks5systemz
behavioral1/memory/4152-109-0x0000000000A70000-0x0000000000B12000-memory.dmp	family_socks5systemz
behavioral1/memory/4152-110-0x0000000000A70000-0x0000000000B12000-memory.dmp	family_socks5systemz

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

Processes:

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmpm4atomp3freeconverter.exem4atomp3freeconverter.exe

pid process

4556 68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
3360 m4atomp3freeconverter.exe
4152 m4atomp3freeconverter.exe
Loads dropped DLL 1 IoCs

Processes:

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

pid process

4556 68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.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 45.155.250.90
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:

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

pid process

4556 68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

pid	process
4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
3360	m4atomp3freeconverter.exe
4152	m4atomp3freeconverter.exe

pid	process
4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

description	ioc
Destination IP	45.155.250.90

pid	process
4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp

description	pid	process	target process
PID 344 wrote to memory of 4556	344	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
PID 344 wrote to memory of 4556	344	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
PID 344 wrote to memory of 4556	344	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
PID 4556 wrote to memory of 3360	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe
PID 4556 wrote to memory of 3360	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe
PID 4556 wrote to memory of 3360	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe
PID 4556 wrote to memory of 4152	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe
PID 4556 wrote to memory of 4152	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe
PID 4556 wrote to memory of 4152	4556	68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp	m4atomp3freeconverter.exe

C:\Users\Admin\AppData\Local\Temp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe
"C:\Users\Admin\AppData\Local\Temp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:344

C:\Users\Admin\AppData\Local\Temp\is-9ON6N.tmp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
"C:\Users\Admin\AppData\Local\Temp\is-9ON6N.tmp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp" /SL5="$60196,4913828,54272,C:\Users\Admin\AppData\Local\Temp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4556

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3freeconverter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3freeconverter.exe" -i
3⤵
- Executes dropped EXE
PID:3360

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3freeconverter.exe
"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3freeconverter.exe" -s
3⤵
- Executes dropped EXE
PID:4152

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\m4atomp3freeconverter.exe
Filesize
3.0MB

MD5
5a827fc0eeaba1a67ab070b7d98b17ee

SHA1
915787404c901acc548cd8453876ad60fbfc20e8

SHA256
8bdc5f43a5b3c79a5c62402d44fce069c79e27c3e4ea3a8957722672a8f04025

SHA512
a5afd3b1d11d95d1b8d5b9583b0d60f8ec15d15de9b1108dd9bb1fbc5a2374db10e5ba0c779fb019404b0362f4ba374f8413397b8ff99cfd6903b00f2487b8ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9ON6N.tmp\68237a1e66de26144b94a5c9a1f91523f8bef3e613d15b0a95997f90edee61b3.tmp
Filesize
680KB

MD5
dafff71ba13e58daac2c21ed0ed54458

SHA1
ec169d6088ee3a539030ef630164dae1dd7d9a80

SHA256
167c4af51c1b261fc6bc53d7e4eab5cc5408ac4953518f1dcd129dbe62aca9fb

SHA512
ecd2f14d391892f82efea278949c0a20367bec0eefef159ad44915d008b462ba0ffb5b00175c5b7f9b9e1f2779f9ed562eb39cf143dd9f44b550f96a7c9bc719

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JRVH9.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/344-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/344-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/344-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3360-59-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/3360-60-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/3360-61-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/3360-65-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-74-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-88-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-117-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-71-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-114-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-77-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-80-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-83-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-86-0x0000000000A70000-0x0000000000B12000-memory.dmp

Filesize
648KB

Download
memory/4152-67-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-93-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-96-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-99-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-102-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-105-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-108-0x0000000000400000-0x000000000070F000-memory.dmp

Filesize
3.1MB

Download
memory/4152-109-0x0000000000A70000-0x0000000000B12000-memory.dmp

Filesize
648KB

Download
memory/4152-110-0x0000000000A70000-0x0000000000B12000-memory.dmp

Filesize
648KB

Download
memory/4556-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4556-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing