socks5systemz | 9b99ac3f10b1396bf4f7c8e8f76d045b744c4dac1bc87c1ad3e740dfc26b047c

General

Target

17bac1320cf993ff775332ea366fd78e.exe
Size

4.8MB
MD5

17bac1320cf993ff775332ea366fd78e
SHA1

03f0cfdd3abc7d6c1372c27021d064e019cdd519
SHA256

9b99ac3f10b1396bf4f7c8e8f76d045b744c4dac1bc87c1ad3e740dfc26b047c
SHA512

181facc11145d2301a72e590dacad76431b2b4a301cb302edb731bc50c4f5cac7635c040f4099d8994d949746b7b91df087fe34ac15753601f092797a1807aa9
SSDEEP

98304:mQCQ6PrWwe1FDsEvXhtl3E3i1j8T/iqpBzXXIKzA9QHaitXVbE4k:4PSw2FJXgCj8T/JpBztA9QH5tFbrk

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bdxtdue.com

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4424-86-0x0000000002510000-0x00000000025B2000-memory.dmp	family_socks5systemz

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

Processes:

17bac1320cf993ff775332ea366fd78e.tmpaudioconverter32.exeaudioconverter32.exe

pid process

1396 17bac1320cf993ff775332ea366fd78e.tmp
2808 audioconverter32.exe
4424 audioconverter32.exe
Loads dropped DLL 1 IoCs

Processes:

17bac1320cf993ff775332ea366fd78e.tmp

pid process

1396 17bac1320cf993ff775332ea366fd78e.tmp
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 152.89.198.214
Destination IP 152.89.198.214
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:

17bac1320cf993ff775332ea366fd78e.tmp

pid process

1396 17bac1320cf993ff775332ea366fd78e.tmp

pid	process
1396	17bac1320cf993ff775332ea366fd78e.tmp
2808	audioconverter32.exe
4424	audioconverter32.exe

pid	process
1396	17bac1320cf993ff775332ea366fd78e.tmp

description	ioc
Destination IP	152.89.198.214
Destination IP	152.89.198.214
Destination IP	91.211.247.248

pid	process
1396	17bac1320cf993ff775332ea366fd78e.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

17bac1320cf993ff775332ea366fd78e.exe17bac1320cf993ff775332ea366fd78e.tmp

description	pid	process	target process
PID 2140 wrote to memory of 1396	2140	17bac1320cf993ff775332ea366fd78e.exe	17bac1320cf993ff775332ea366fd78e.tmp
PID 2140 wrote to memory of 1396	2140	17bac1320cf993ff775332ea366fd78e.exe	17bac1320cf993ff775332ea366fd78e.tmp
PID 2140 wrote to memory of 1396	2140	17bac1320cf993ff775332ea366fd78e.exe	17bac1320cf993ff775332ea366fd78e.tmp
PID 1396 wrote to memory of 2808	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe
PID 1396 wrote to memory of 2808	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe
PID 1396 wrote to memory of 2808	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe
PID 1396 wrote to memory of 4424	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe
PID 1396 wrote to memory of 4424	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe
PID 1396 wrote to memory of 4424	1396	17bac1320cf993ff775332ea366fd78e.tmp	audioconverter32.exe

C:\Users\Admin\AppData\Local\Temp\17bac1320cf993ff775332ea366fd78e.exe
"C:\Users\Admin\AppData\Local\Temp\17bac1320cf993ff775332ea366fd78e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2140

C:\Users\Admin\AppData\Local\Temp\is-BRNO5.tmp\17bac1320cf993ff775332ea366fd78e.tmp
"C:\Users\Admin\AppData\Local\Temp\is-BRNO5.tmp\17bac1320cf993ff775332ea366fd78e.tmp" /SL5="$C003C,4783782,54272,C:\Users\Admin\AppData\Local\Temp\17bac1320cf993ff775332ea366fd78e.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1396

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -i
3⤵
- Executes dropped EXE
PID:2808

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -s
3⤵
- Executes dropped EXE
PID:4424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
Filesize
2.9MB

MD5
bb4ad2ecf1a3da08fd86288e66506e52

SHA1
1dc4a76eb5e37c31804c8f62d71fd1a31c9944c8

SHA256
7d69a75de52bbc786cb0d9473ef1ea20818a45c5c35bfba2f6b829cfdd9fb01e

SHA512
295ceba397b50b6dad7acbc2c72334161806bba5a101e04d90e1e44488a854096d2c78dfd638e84721e7a90462fe35891110724b5216dc9e8ed6fc067c32e209

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BRNO5.tmp\17bac1320cf993ff775332ea366fd78e.tmp
Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-NMO35.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1396-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1396-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2140-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2140-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2140-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2808-59-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2808-60-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2808-63-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2808-65-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-74-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-86-0x0000000002510000-0x00000000025B2000-memory.dmp

Filesize
648KB

Download
memory/4424-68-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-77-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-80-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-83-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-88-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-71-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-93-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-96-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-99-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-102-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-105-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-108-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-111-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/4424-114-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download

Analysis

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