socks5systemz | d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6

General

Target

d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe
Size

4.2MB
MD5

dbe938c4fef8fcae971266c23d42a2fc
SHA1

a53ad1315357a46aa2f00dbedf94290e57eef552
SHA256

d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6
SHA512

ed85a568fe819a3b4a3d8e517eccacb3dfc817c7c2db0219b2ec603b5e909724daab3d04f83adae5195600fadf561f4357c695f94ce8f02d6ad2fd2bcc4ae4ca
SSDEEP

98304:yiibCndb76PZdLIC5z6rMEkqhlzFwp4VLQZoPabJml8eNnik0kn:3i2ndbq3L7dulhlzCOVUUiOvNik0S

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bvfmyvr.com

http://bvfmyvr.com/search/?q=67e28dd83e0ff02f4208ac167c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd13c8e79d9938

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/6016-69-0x0000000000980000-0x0000000000A22000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1820	is-L3CCD.tmp
4076	sunvox.exe
6016	sunvox.exe

Loads dropped DLL 1 IoCs

pid	Process
1820	is-L3CCD.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	43	91.211.247.248	6016	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	d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	is-L3CCD.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sunvox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sunvox.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1820	1352	d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe	87
PID 1352 wrote to memory of 1820	1352	d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe	87
PID 1352 wrote to memory of 1820	1352	d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe	87
PID 1820 wrote to memory of 4076	1820	is-L3CCD.tmp	89
PID 1820 wrote to memory of 4076	1820	is-L3CCD.tmp	89
PID 1820 wrote to memory of 4076	1820	is-L3CCD.tmp	89
PID 1820 wrote to memory of 6016	1820	is-L3CCD.tmp	90
PID 1820 wrote to memory of 6016	1820	is-L3CCD.tmp	90
PID 1820 wrote to memory of 6016	1820	is-L3CCD.tmp	90

C:\Users\Admin\AppData\Local\Temp\d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe
"C:\Users\Admin\AppData\Local\Temp\d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Users\Admin\AppData\Local\Temp\is-FJMLO.tmp\is-L3CCD.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-FJMLO.tmp\is-L3CCD.tmp" /SL4 $90218 "C:\Users\Admin\AppData\Local\Temp\d9550d4c11681861c7596334d1c63398826b790751aede4f68edb3f605f627a6.exe" 4057671 52224
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1820
- - 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:4076
- - 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:6016

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
2.8MB

MD5
382386698fd4634831bf887557ae6f05

SHA1
bccb28ac8a2063687bc391a5a79604cda984eeb1

SHA256
8ad7df02abcc4ba3039aa9c23465d0c480c7e4930da88ca76d648dba82d3ecfb

SHA512
bcb9e5b2449a77f7ce4cdb23c6706ded4db94575493ce11030384924b7359abc695fc613bfccea2d1dee9405422f7f44d2c46a79dc906ef9f48c6341637a070a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CCN4V.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-FJMLO.tmp\is-L3CCD.tmp

Filesize
642KB

MD5
54f4f42091ef06d74cd8dcf85c0605dd

SHA1
5acfc7a4327eb5185e53ce182c6abd540a3135f4

SHA256
a5738242286d73f836d6d511da93b5dc39bf1d9d1bd676fc12e7263f5e952250

SHA512
344f958c5dc53c865843894213e22f5db73f578f0b9f7549d7e11af8d308e4feadcd4ea7c2541b43ff20e5e3b06a9bc9ecb0a09dd80ad2e8544451f57ca72b4d

Download Submit
memory/1352-2-0x0000000000401000-0x000000000040A000-memory.dmp

Filesize
36KB

Download
memory/1352-0-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1352-50-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1820-49-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/1820-7-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/4076-38-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/4076-39-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/4076-42-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/4076-44-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-56-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-78-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-52-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-53-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-47-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-59-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-62-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-65-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-68-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-69-0x0000000000980000-0x0000000000A22000-memory.dmp

Filesize
648KB

Download
memory/6016-75-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-48-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-81-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-84-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-87-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-90-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-94-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-97-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-100-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-103-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-106-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-109-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download
memory/6016-114-0x0000000000400000-0x00000000006C9000-memory.dmp

Filesize
2.8MB

Download

Analysis

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