socks5systemz | a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd

General

Target

a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe
Size

4.8MB
MD5

20b715255948a66e9c034bbb86e34e24
SHA1

295c9b4a35dd22c10cf14b1b80939fd3bf8a6273
SHA256

a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd
SHA512

a71aaf3ac80420761cdf0a75cdd4cd636f814540ca1155a17f7e22b2d68d6e9c48c61d1ac865aa90af5471592745deefb170a3459e7a5f52faae8a03bef91ca2
SSDEEP

98304:mdvtdkxcJjbuUdWlL0NAwBrnx7h0nI4KcNNcAyIn0dn1Ufizm3ASzT:kvXkxcuUd6qjBrnAnnUAyIDhASX

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bmeqdne.com

http://bmeqdne.com/search/?q=67e28dd86d5ff028450dff177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff614c2e69c9a3f

http://bmeqdne.com/search/?q=67e28dd86d5ff028450dff177c27d78406abdd88be4b12eab517aa5c96bd86ef978e4f825a8bbc896c58e713bc90c91936b5281fc235a925ed3e56d6bd974a95129070b616e96cc92be510b866db52bee348ee4c2b14a82966836f23d7f210c7ee9c9f39c4669612

Signatures

Detect Socks5Systemz Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2436-83-0x00000000008A0000-0x0000000000942000-memory.dmp	family_socks5systemz
behavioral2/memory/2436-128-0x00000000008A0000-0x0000000000942000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp
3840	winypux32.exe
2436	winypux32.exe

Loads dropped DLL 1 IoCs

pid	Process
3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.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	45.155.250.90

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
3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 344 wrote to memory of 3856	344	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe	73
PID 344 wrote to memory of 3856	344	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe	73
PID 344 wrote to memory of 3856	344	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe	73
PID 3856 wrote to memory of 3840	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	74
PID 3856 wrote to memory of 3840	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	74
PID 3856 wrote to memory of 3840	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	74
PID 3856 wrote to memory of 2436	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	75
PID 3856 wrote to memory of 2436	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	75
PID 3856 wrote to memory of 2436	3856	a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp	75

C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe
"C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:344
- C:\Users\Admin\AppData\Local\Temp\is-NK4KT.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-NK4KT.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp" /SL5="$5022E,4735694,54272,C:\Users\Admin\AppData\Local\Temp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3856
- - C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
    "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:3840
- - C:\Users\Admin\AppData\Local\Winypux\winypux32.exe
    "C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2436

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\Temp\is-NK4KT.tmp\a222d9ef359fbc9dabd07570d38d368086b6fd682a8b1590fc72a240f0f2fbbd.tmp

Filesize
680KB

MD5
fe8159895c04f572c0d4ff483fde0a81

SHA1
7b5cd749bb4ac1e5a57f1b11cd33857d5d2514ef

SHA256
36e684553464cedcab2f2766d44d135206af42c396379a98ac45e476517fb0e6

SHA512
ccaa6b1e6229f93fe5a087d1c3c711402f780521a403617ab12ee32844f3f1ea74e9f103cad76b0d1a25bee0cb2e22bb393c685844ae714777b6e3e54ce79392

Download Submit
C:\Users\Admin\AppData\Local\Winypux\winypux32.exe

Filesize
2.8MB

MD5
94b4d42bcf15988d59b2c3f38c3b158e

SHA1
595c58eb2ef0e1d8f869cd95f21b2adf0628e335

SHA256
0dd841df41a36a20210c5d24199578e423d91623691dd6875e3a2b08fcdecd91

SHA512
18d6132d8aa400a2ced3494a5007546beb86fa52c52eac65acf96ae3aae197a214dea936a292c284e58b0b77f27e5e11a90cd158834f7f5caadbb8f49974a6ef

Download Submit
\Users\Admin\AppData\Local\Temp\is-56T0A.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/344-66-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/344-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/344-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2436-108-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-93-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-128-0x00000000008A0000-0x0000000000942000-memory.dmp

Filesize
648KB

Download
memory/2436-126-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-123-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-68-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-71-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-74-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-77-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-80-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-83-0x00000000008A0000-0x0000000000942000-memory.dmp

Filesize
648KB

Download
memory/2436-85-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-90-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-120-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-96-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-99-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-102-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-105-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-117-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-111-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/2436-114-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/3840-60-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/3840-59-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/3840-63-0x0000000000400000-0x00000000006C8000-memory.dmp

Filesize
2.8MB

Download
memory/3856-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3856-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

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