socks5systemz | 446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8

General

Target

446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe
Size

5.4MB
MD5

c0d45e64620776b83a9631bfc329aa56
SHA1

836a102afed7827c69309f2f1e820bb81f6e7791
SHA256

446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8
SHA512

9dc5cc9046f3483ef43427bb083a6b416af9cdfd9be8f315771474ff29da85691431a3206774964f77043789c48b48df4a07a0570945d0a3c6c98f308f3851cd
SSDEEP

98304:mn9gu0UkvUYWiIjrw0bVnWGDvpdut5vwoAJFm4gkQzEZiLh7W2V8ZLctoXuy:OHkvU2ERxvDr45oo+0kQzEAuZgtg

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

ejrtgko.ua

http://ejrtgko.ua/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff713c5ef93993a

http://ejrtgko.ua/search/?q=67e28dd8655df07d165afd1f7c27d78406abdd88be4b12eab517aa5c96bd86ee95844a885a8bbc896c58e713bc90c91936b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9d983ecd699517

Signatures

Detect Socks5Systemz Payload 3 IoCs

resource	yara_rule
behavioral2/memory/3440-88-0x0000000000B90000-0x0000000000C32000-memory.dmp	family_socks5systemz
behavioral2/memory/3440-112-0x0000000000B90000-0x0000000000C32000-memory.dmp	family_socks5systemz
behavioral2/memory/3440-113-0x0000000000B90000-0x0000000000C32000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp
2116	moonvoiceassist.exe
3440	moonvoiceassist.exe

Loads dropped DLL 1 IoCs

pid	Process
1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.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	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

pid	Process
1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 1396	3076	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe	78
PID 3076 wrote to memory of 1396	3076	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe	78
PID 3076 wrote to memory of 1396	3076	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe	78
PID 1396 wrote to memory of 2116	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	80
PID 1396 wrote to memory of 2116	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	80
PID 1396 wrote to memory of 2116	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	80
PID 1396 wrote to memory of 3440	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	81
PID 1396 wrote to memory of 3440	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	81
PID 1396 wrote to memory of 3440	1396	446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp	81

C:\Users\Admin\AppData\Local\Temp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe
"C:\Users\Admin\AppData\Local\Temp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\is-PH6T8.tmp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-PH6T8.tmp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp" /SL5="$50084,5374227,54272,C:\Users\Admin\AppData\Local\Temp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe
    "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2116
- - C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe
    "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist.exe" -s
    3⤵
    - Executes dropped EXE
    PID:3440

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\moonvoiceassist.exe

Filesize
3.7MB

MD5
7e04cc90fb4142e9b66a2f04ddd65772

SHA1
cf2223265214f7a2dcf9ff85fe534843ee1336e7

SHA256
ee1e51d54f6234ac54a72ccfdfee0fb078cde08d3523e92ecdaded397d916fde

SHA512
c24547e6925e7aae0dda04313d33843b6fae6cd21a4043cd8477317ce0efb39c95ba1a3ee56ec406b775b32b35bfd21b287e0e94c98667d9c1ed13f64330e9d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-73V8L.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PH6T8.tmp\446af0f775b061330d29df512bf0e3827939dbd650be7cac5c52af84c79624b8.tmp

Filesize
680KB

MD5
bb765f2ae7f9da76f9edef8dde07f1cf

SHA1
ba5af8f092247d9a81d9d50d5390bbe5a280501a

SHA256
65b94a7e8d0e19c89c871b49457934d80365d9a9c2ff781509a1cb68421da552

SHA512
a6d7f16c4bb1e6dde9e221ae343a2e46de39b314f56bb9877574b29d14becd209f131a5b649faa97aa847c252fe379b96a71791bdd1f102e054fafb7a8e0b0aa

Download Submit
memory/1396-16-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1396-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2116-60-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/2116-59-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/2116-63-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/2116-65-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3076-70-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3076-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3076-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3440-76-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-91-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-72-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-75-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-69-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-79-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-82-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-85-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-88-0x0000000000B90000-0x0000000000C32000-memory.dmp

Filesize
648KB

Download
memory/3440-68-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-96-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-99-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-102-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-105-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-108-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-111-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-112-0x0000000000B90000-0x0000000000C32000-memory.dmp

Filesize
648KB

Download
memory/3440-113-0x0000000000B90000-0x0000000000C32000-memory.dmp

Filesize
648KB

Download
memory/3440-117-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download
memory/3440-120-0x0000000000400000-0x00000000007C1000-memory.dmp

Filesize
3.8MB

Download

Analysis

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