socks5systemz | 8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c

General

Target

8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe
Size

4.3MB
MD5

af5d541c450c2fae1b1c104528813038
SHA1

bb4ef8d46353460e0409119e2dbaeb06b18314c4
SHA256

8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c
SHA512

a12b9896fd53bffea179a3220920255c8717625a824081f6fb282f2c928e05f88591bdbfd997b837797b7c93c72233ae993afadedc81fe0c1f9c048b63dc1fcf
SSDEEP

98304:iivYe0VCWqCpTX/oqQsFwD0K1E3iwNiulKmK//bRA0kY:Hv/WDDGUfKW39NKNLi0l

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bbumhyc.com

http://bbumhyc.com/search/?q=67e28dd86558fa2d4658af497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd12c3e7959f3d

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/5780-67-0x0000000000850000-0x00000000008F2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
720	is-T5J9I.tmp
5496	sunvox.exe
5780	sunvox.exe

Loads dropped DLL 1 IoCs

pid	Process
720	is-T5J9I.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	flow	ioc	pid	Process
Destination IP	36	91.211.247.248	5780	sunvox.exe

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

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-T5J9I.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sunvox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sunvox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3656 wrote to memory of 720	3656	8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe	86
PID 3656 wrote to memory of 720	3656	8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe	86
PID 3656 wrote to memory of 720	3656	8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe	86
PID 720 wrote to memory of 5496	720	is-T5J9I.tmp	89
PID 720 wrote to memory of 5496	720	is-T5J9I.tmp	89
PID 720 wrote to memory of 5496	720	is-T5J9I.tmp	89
PID 720 wrote to memory of 5780	720	is-T5J9I.tmp	90
PID 720 wrote to memory of 5780	720	is-T5J9I.tmp	90
PID 720 wrote to memory of 5780	720	is-T5J9I.tmp	90

C:\Users\Admin\AppData\Local\Temp\8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe
"C:\Users\Admin\AppData\Local\Temp\8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3656
- C:\Users\Admin\AppData\Local\Temp\is-QS677.tmp\is-T5J9I.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QS677.tmp\is-T5J9I.tmp" /SL4 $401E4 "C:\Users\Admin\AppData\Local\Temp\8fc201090d34fb3d4a9d1dcddee20c0acbd0c389051d7e5d5a0636c77868e72c.exe" 4117390 52224
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:720
- - C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe
    "C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5496
- - C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe
    "C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:5780

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Sun Vox\sunvox.exe

Filesize
2.9MB

MD5
b4da6dd8ed8cc9efb58830255693b6da

SHA1
0158add1b26706a75a8093857c580ebaf898b01b

SHA256
304ff957ff6e1927daa3d29ece1edfd0b9b2fd72b1698448bbae8ad32b024e3b

SHA512
e984a83136b4aa8c846c36375bf29a105e46543df9d597daaf2cbaa95b1f43d3c572305d4bad0560bd8a564437924da9b05cfe05cf183266b4256969e8b396ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6N6I7.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QS677.tmp\is-T5J9I.tmp

Filesize
642KB

MD5
54f4f42091ef06d74cd8dcf85c0605dd

SHA1
5acfc7a4327eb5185e53ce182c6abd540a3135f4

SHA256
a5738242286d73f836d6d511da93b5dc39bf1d9d1bd676fc12e7263f5e952250

SHA512
344f958c5dc53c865843894213e22f5db73f578f0b9f7549d7e11af8d308e4feadcd4ea7c2541b43ff20e5e3b06a9bc9ecb0a09dd80ad2e8544451f57ca72b4d

Download Submit
memory/720-7-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/720-47-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/3656-48-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3656-0-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3656-2-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/5496-38-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5496-39-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5496-42-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5496-43-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-57-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-80-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-51-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-54-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-46-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-60-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-63-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-68-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-67-0x0000000000850000-0x00000000008F2000-memory.dmp

Filesize
648KB

Download
memory/5780-74-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-77-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-50-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-83-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-86-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-89-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-93-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-96-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-99-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-102-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-105-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-108-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download
memory/5780-113-0x0000000000400000-0x00000000006DE000-memory.dmp

Filesize
2.9MB

Download

Analysis

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