socks5systemz | b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995

General

Target

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe
Size

4.8MB
MD5

3c211e347090930efc5840d9c261369a
SHA1

e6b75f2990d369a55456a921f7c11e8bf3ddefb6
SHA256

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995
SHA512

10b2a82f67ca3811181edd8b261c6ef6e231d924f32e2ed2756cebc9a6569f04840dc6947dc11a9bf45f9b759a8ccd9217e7802eae1f2729579c855dd06c31c0
SSDEEP

98304:mMub1ialpsbm1SuulMaUWKH9sPWnkrSndM36v/+WNibfvQ0:khpRdjXlHSPykrSntBNibf9

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

cesefby.net

http://cesefby.net/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff713c1e7909238

http://cesefby.net/search/?q=67e28dd86c5af52d4607af197c27d78406abdd88be4b12eab517aa5c96bd86e89d8545835a8bbc896c58e713bc90c91b36b5281fc235a925ed3e06d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9d983ac56a9e15

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1632-84-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral2/memory/1632-110-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral2/memory/1632-111-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz

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

Processes:

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmpaudioconverter32.exeaudioconverter32.exe

pid process

4896 b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
420 audioconverter32.exe
1632 audioconverter32.exe
Loads dropped DLL 1 IoCs

Processes:

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

pid process

4896 b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.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 152.89.198.214
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:

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

pid process

4896 b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

pid	process
4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
420	audioconverter32.exe
1632	audioconverter32.exe

pid	process
4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

description	ioc
Destination IP	152.89.198.214

pid	process
4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exeb8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp

description	pid	process	target process
PID 2728 wrote to memory of 4896	2728	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
PID 2728 wrote to memory of 4896	2728	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
PID 2728 wrote to memory of 4896	2728	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
PID 4896 wrote to memory of 420	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe
PID 4896 wrote to memory of 420	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe
PID 4896 wrote to memory of 420	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe
PID 4896 wrote to memory of 1632	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe
PID 4896 wrote to memory of 1632	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe
PID 4896 wrote to memory of 1632	4896	b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp	audioconverter32.exe

C:\Users\Admin\AppData\Local\Temp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe
"C:\Users\Admin\AppData\Local\Temp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2728

C:\Users\Admin\AppData\Local\Temp\is-HD6BC.tmp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
"C:\Users\Admin\AppData\Local\Temp\is-HD6BC.tmp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp" /SL5="$4021A,4762623,54272,C:\Users\Admin\AppData\Local\Temp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4896

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:420

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:1632

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
edb9f68cdb8a5be51ddd9408c8f1eaa7

SHA1
eea6d6b43f1704deab95e4fa6661a9480751ded0

SHA256
b08b991af44827a81336babbedeb7195bca5d2e164fc3d41c64905a92fc3acfa

SHA512
56a801a05650fc41ccda957eb9052015e7f6c9bb38adc81edd0cbc1a6a4811190360fd34210502e53a0749cd5e46a36e9441aad98f0c30d66d97247e0e93e795

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HD6BC.tmp\b8f5a15fe091851a9507eac3cab254b511e693363264b0ad2147ebb7de5a0995.tmp
Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/420-74-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/420-62-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/420-59-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/420-64-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-100-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-84-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/1632-118-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-115-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-111-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/1632-70-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-73-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-110-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/1632-77-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-80-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-83-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-67-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-89-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-94-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-97-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-109-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-103-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/1632-106-0x0000000000400000-0x00000000006E9000-memory.dmp

Filesize
2.9MB

Download
memory/2728-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2728-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4896-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4896-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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