socks5systemz | 2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d

General

Target

2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe
Size

4.6MB
MD5

edb5b2812a4ab1a9695f70db81e59e6f
SHA1

4271df6d69b18efc95d3242ae96d78a7068997e2
SHA256

2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d
SHA512

eed0d5528b6eb93beb0905fa082b824262b4713821fb33b5b92d55971a5fb67b0fcabd313c06ef361e0af073379324593da58eb1640b794a6dac1bf2a5e53ee4
SSDEEP

98304:m85f65y8RMsYRLX8D8zTY17FcMoFnlzjwpqAk2g:zcdMs4X8Ya7FnEnipq4g

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bwjtexc.com

http://bwjtexc.com/search/?q=67e28dd8685af379125bfd4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff614c2e7959f39

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1752-85-0x00000000009B0000-0x0000000000A52000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp
2996	freesoundrecorder.exe
1752	freesoundrecorder.exe

Loads dropped DLL 1 IoCs

pid	Process
332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

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

pid	Process
332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 332	3608	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe	74
PID 3608 wrote to memory of 332	3608	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe	74
PID 3608 wrote to memory of 332	3608	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe	74
PID 332 wrote to memory of 2996	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	75
PID 332 wrote to memory of 2996	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	75
PID 332 wrote to memory of 2996	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	75
PID 332 wrote to memory of 1752	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	76
PID 332 wrote to memory of 1752	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	76
PID 332 wrote to memory of 1752	332	2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp	76

C:\Users\Admin\AppData\Local\Temp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe
"C:\Users\Admin\AppData\Local\Temp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Users\Admin\AppData\Local\Temp\is-IV5C6.tmp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-IV5C6.tmp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp" /SL5="$50200,4562532,54272,C:\Users\Admin\AppData\Local\Temp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:332
- - C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
    "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2996
- - C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe
    "C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1752

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe

Filesize
2.8MB

MD5
3cc4f5ace9b68bbe544dde59157d066b

SHA1
a9adbad5b413d73c03dff6921e1bbf28154067b9

SHA256
112824fc4af62fd68ef9798c71997b73ebf01acd531a8097370bf06c0c8c1aed

SHA512
bbd51d68c2de65143136de35c8e75c7bcb725d262ff61c39f8fc16fc05091fa0212959d020de8e87bc316704bc2f59073426ad93db0937950f1d0f547411d175

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-IV5C6.tmp\2569d730c919ad4dd069689868201a9f403659fdcb0560b9698f38dc4b5d829d.tmp

Filesize
680KB

MD5
8b304c468195ab293e5441936d1951ed

SHA1
916b54a63d6d27496804ec1ca3a7b6b1f6ef11cc

SHA256
6f89d2c5f99527821d5a136c0e2ffabee6dc5a2a31b49b14e85ccee95f076e74

SHA512
c3fed038dcf3e8b8a9df603207fabf69835645fe6ed670a54ebe0b10dad5f7099c03ce7f9fa359d31f8464c1b203e84b8418e2b1accd468dad13b6f795ae8137

Download Submit
\Users\Admin\AppData\Local\Temp\is-GFPJJ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/332-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/332-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1752-82-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-87-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-129-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-66-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-126-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-123-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-120-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-70-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-73-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-76-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-79-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-117-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-85-0x00000000009B0000-0x0000000000A52000-memory.dmp

Filesize
648KB

Download
memory/1752-114-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-92-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-95-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-98-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-101-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-104-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-107-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/1752-111-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/2996-59-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/2996-60-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/2996-64-0x0000000000400000-0x00000000006C6000-memory.dmp

Filesize
2.8MB

Download
memory/3608-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3608-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3608-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing