socks5systemz | 1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c

General

Target

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe
Size

5.0MB
MD5

3d791f85a6d7369b1cb648d95fcfe960
SHA1

018874787c645279a9aa620d19cf6373d1d1dd8a
SHA256

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c
SHA512

b48001152fcf3f9232a38c91bb86a1f27f9784c49c4352427e705899eb5dfba28b382a37fc9a2129ed286cecf7b3040e049cb5f3074ad4137a8d1a703df40112
SSDEEP

98304:m9JYD5yCR21dYuSTWP1WVM4gz53po2TbglErRVELno9UXHpGAzHcVT8ZP0bmxS:W2G7YuS69l4gz5e2TbglJLno9WHHcVTp

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvbntxo.com

http://bvbntxo.com/search/?q=67e28dd8645fa72f495daa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c1e7959332

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1804-83-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz

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

Processes:

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmpaudioconverter32.exeaudioconverter32.exe

pid process

2368 1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
528 audioconverter32.exe
1804 audioconverter32.exe
Loads dropped DLL 1 IoCs

Processes:

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

pid process

2368 1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.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:

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

pid process

2368 1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

pid	process
2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
528	audioconverter32.exe
1804	audioconverter32.exe

pid	process
2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

description	ioc
Destination IP	152.89.198.214

pid	process
2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp

description	pid	process	target process
PID 1468 wrote to memory of 2368	1468	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
PID 1468 wrote to memory of 2368	1468	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
PID 1468 wrote to memory of 2368	1468	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
PID 2368 wrote to memory of 528	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe
PID 2368 wrote to memory of 528	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe
PID 2368 wrote to memory of 528	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe
PID 2368 wrote to memory of 1804	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe
PID 2368 wrote to memory of 1804	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe
PID 2368 wrote to memory of 1804	2368	1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp	audioconverter32.exe

C:\Users\Admin\AppData\Local\Temp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe
"C:\Users\Admin\AppData\Local\Temp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1468

C:\Users\Admin\AppData\Local\Temp\is-T44UJ.tmp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
"C:\Users\Admin\AppData\Local\Temp\is-T44UJ.tmp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp" /SL5="$70218,4942030,54272,C:\Users\Admin\AppData\Local\Temp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2368

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:528

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:1804

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
3.1MB

MD5
5b1e168d282550e659eda6c916f8c3db

SHA1
e2fed15ef5f4f412bf0a99a4c9d20d38054a13d2

SHA256
58a44f3cc56c3abc72ca57ebecfb328842c2d9f22324460178e3dc2e9a7c75d8

SHA512
eb241b2f702aaabd2e46053f3d63115739bcaedb042049a63ce70635ede01aba28b5689e83bb33f52f1fe5afc34ea8d1c611bc0b0bbfbfd50f659df18991df76

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T44UJ.tmp\1a95bab1423891687de8ae39725929615963ff75961d236c07532e0b6f09e63c.tmp
Filesize
680KB

MD5
f2ea57162349fbb5a88b276f91880c7d

SHA1
31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

SHA256
756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

SHA512
3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

Download Submit
\Users\Admin\AppData\Local\Temp\is-AIL1V.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/528-59-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/528-60-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/528-63-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1468-66-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1468-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1468-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1804-77-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-96-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-68-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-71-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-74-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-129-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-80-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-83-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/1804-85-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-90-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-93-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-124-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-99-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-102-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-105-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-109-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-112-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-115-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-118-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/1804-121-0x0000000000400000-0x0000000000713000-memory.dmp

Filesize
3.1MB

Download
memory/2368-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2368-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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