socks5systemz | 2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d

General

Target

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe
Size

4.8MB
MD5

f932f45d6586f5b7643c0d23a0d03183
SHA1

d42f323c017e4332b58e1f8a309f271000af0cae
SHA256

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d
SHA512

849491f1edfe2f772ca5ee14b510401337e9fe21c89d60234c271492c62f0c75b28491c91038f24583cc80e84efe272ac5177133c29f82ca7229d82ff73d80ae
SSDEEP

98304:mWlruAtDxyTMUwPFbluZa+NpaDzR3io9+C3byDS/vwQLe:3lrwTCbYQjXRSoY6eqwf

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

dlnkmbe.info

http://dlnkmbe.info/search/?q=67e28dd86d5ff028450dff177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff712c1e7909239

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1824-83-0x0000000002580000-0x0000000002622000-memory.dmp	family_socks5systemz

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

Processes:

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmpmoonvoiceassist32_64.exemoonvoiceassist32_64.exe

pid process

4476 2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
3152 moonvoiceassist32_64.exe
1824 moonvoiceassist32_64.exe
Loads dropped DLL 1 IoCs

Processes:

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

pid process

4476 2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.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:

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

pid process

4476 2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

pid	process
4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
3152	moonvoiceassist32_64.exe
1824	moonvoiceassist32_64.exe

pid	process
4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp

description	pid	process	target process
PID 4092 wrote to memory of 4476	4092	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
PID 4092 wrote to memory of 4476	4092	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
PID 4092 wrote to memory of 4476	4092	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
PID 4476 wrote to memory of 3152	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe
PID 4476 wrote to memory of 3152	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe
PID 4476 wrote to memory of 3152	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe
PID 4476 wrote to memory of 1824	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe
PID 4476 wrote to memory of 1824	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe
PID 4476 wrote to memory of 1824	4476	2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp	moonvoiceassist32_64.exe

C:\Users\Admin\AppData\Local\Temp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe
"C:\Users\Admin\AppData\Local\Temp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4092

C:\Users\Admin\AppData\Local\Temp\is-0936S.tmp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
"C:\Users\Admin\AppData\Local\Temp\is-0936S.tmp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp" /SL5="$5022E,4790050,54272,C:\Users\Admin\AppData\Local\Temp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4476

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:3152

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:1824

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
2.9MB

MD5
86ea6e51511969079700a6f23a24cac9

SHA1
184a762bfb1dc8b573d06d12bd96101a59a250bf

SHA256
9d159bc3fe13a1776931050f46d357c6473700906c97d34ed1717995396cb319

SHA512
bbfe4b492632361d2880e7efd56708491c82ea4ed05ed7bd1f6648166aa8122469ab6f6c0a2510e345266bc62d55d5a7c4940810c754e6d05d60dec80b477afa

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0936S.tmp\2ca3e7b899022ef1d41e3f6b6de78d4b63e3e5db81b8f00db085eaa05625804d.tmp
Filesize
680KB

MD5
895d982b558dbe81e0d8d31e818f766e

SHA1
27d9e61b8edaf48db4c519be05f0f4ea33900a7a

SHA256
3c0328c6c8c37a3e81cb28c46eeb4c98f033eaf28326903ac6e7204d23928cfb

SHA512
4ab3f51fe1f4b7ce5bd6e21518de1ebae7b631bb4a968a424efff6db1a53755853478db108547492a2784c55f1d934f776388232f556880f682e401c45b7db97

Download Submit
\Users\Admin\AppData\Local\Temp\is-CVVI3.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1824-99-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-102-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-127-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-124-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-121-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-118-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-115-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-111-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-68-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-71-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-74-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-77-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-80-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-83-0x0000000002580000-0x0000000002622000-memory.dmp

Filesize
648KB

Download
memory/1824-85-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-90-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-93-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-96-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-108-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/1824-105-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/3152-63-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/3152-60-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/3152-59-0x0000000000400000-0x00000000006F6000-memory.dmp

Filesize
3.0MB

Download
memory/4092-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4092-66-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4092-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4476-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4476-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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