socks5systemz | 6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d

General

Target

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe
Size

5.0MB
MD5

9d49728f6ad7dddba3049c97c40ed1a0
SHA1

437095acdd37976bf0f1ad66e4c5c3c36791742c
SHA256

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d
SHA512

414efb20419bfbcc1d0982fbd1a90695e6e13a58f677e9e79ec63a81f87890edffd26444e8d447a8aa98ba3cad893e6c3070d229722bc1931d4c699e7b1008fc
SSDEEP

98304:mq7tEbnTA9LmrUFAsOXmyzSMqJrhSAS9OLLwVD+CTYV1JEWY6e:f7tEnTwxAtXmR1J7hkF+CmO3

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

ckisnye.net

http://ckisnye.net/search/?q=67e28dd8685ff37d4306f81a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff712c3ef929d38

http://ckisnye.net/search/?q=67e28dd8685ff37d4306f81a7c27d78406abdd88be4b12eab517aa5c96bd86e891814a865a8bbc896c58e713bc90c91b36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d9938cd689115

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/440-86-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral1/memory/440-109-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz
behavioral1/memory/440-110-0x0000000002560000-0x0000000002602000-memory.dmp	family_socks5systemz

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

Processes:

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmpmoonvoiceassist32_64.exemoonvoiceassist32_64.exe

pid process

700 6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
4204 moonvoiceassist32_64.exe
440 moonvoiceassist32_64.exe
Loads dropped DLL 1 IoCs

Processes:

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

pid process

700 6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.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 141.98.234.31
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:

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

pid process

700 6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

pid	process
700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
4204	moonvoiceassist32_64.exe
440	moonvoiceassist32_64.exe

pid	process
700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp

description	pid	process	target process
PID 4956 wrote to memory of 700	4956	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
PID 4956 wrote to memory of 700	4956	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
PID 4956 wrote to memory of 700	4956	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
PID 700 wrote to memory of 4204	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe
PID 700 wrote to memory of 4204	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe
PID 700 wrote to memory of 4204	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe
PID 700 wrote to memory of 440	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe
PID 700 wrote to memory of 440	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe
PID 700 wrote to memory of 440	700	6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp	moonvoiceassist32_64.exe

C:\Users\Admin\AppData\Local\Temp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe
"C:\Users\Admin\AppData\Local\Temp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4956

C:\Users\Admin\AppData\Local\Temp\is-QG77K.tmp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
"C:\Users\Admin\AppData\Local\Temp\is-QG77K.tmp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp" /SL5="$800E0,4987691,54272,C:\Users\Admin\AppData\Local\Temp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:700

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -i
3⤵
- Executes dropped EXE
PID:4204

C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -s
3⤵
- Executes dropped EXE
PID:440

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\Moon Voice Assist\moonvoiceassist32_64.exe
Filesize
3.1MB

MD5
4b8bf546964b9144a1f9cddd8eb7edda

SHA1
3b554ff65c57a117983bec5ee5622bd2d5149f72

SHA256
f473e894fde6a5b494d4763981887d44fd3ed60d726eb26b059845312fedfb66

SHA512
114b1493bc1a7fd243ef9854db271193d8df16a2519096848fa5f6a1083ec98aadbf3ffe43a8c06528778ef246337eab92dbbf6af252eae5bfaf0887c72b6a35

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-M93EJ.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QG77K.tmp\6eebb5c45ac6b33dc01ea42855aa3576c6b8b4e4f79d9a4b8072435f784c8f9d.tmp
Filesize
680KB

MD5
895d982b558dbe81e0d8d31e818f766e

SHA1
27d9e61b8edaf48db4c519be05f0f4ea33900a7a

SHA256
3c0328c6c8c37a3e81cb28c46eeb4c98f033eaf28326903ac6e7204d23928cfb

SHA512
4ab3f51fe1f4b7ce5bd6e21518de1ebae7b631bb4a968a424efff6db1a53755853478db108547492a2784c55f1d934f776388232f556880f682e401c45b7db97

Download Submit
memory/440-96-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-80-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-117-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-114-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-110-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/440-109-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/440-108-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-68-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-105-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-102-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-71-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-74-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-77-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-99-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-83-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-86-0x0000000002560000-0x0000000002602000-memory.dmp

Filesize
648KB

Download
memory/440-88-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/440-93-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/700-13-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/700-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4204-65-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/4204-63-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/4204-60-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/4204-59-0x0000000000400000-0x0000000000721000-memory.dmp

Filesize
3.1MB

Download
memory/4956-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download

Analysis

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