socks5systemz | f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c

General

Target

f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe
Size

4.9MB
MD5

a31fdf27cfd3d8057db491e55696b7c3
SHA1

aeff4eca924c6b0dc2091e4d2d4e08b73187f7de
SHA256

f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c
SHA512

ac00c3ac501dc00d03dc383d07b352058b588ffeb4e43131361bbbe6f729122729830fae928124928bf59168adbdbfc0d652bc38afb5ebeec06759ee84a4ce0c
SSDEEP

98304:mSwGM3Z/u93SEQiH5SNfRAHaChnqG5rGDkQ3sABLLhtNAeGIOZ1:nwGABul37ZSBR2alorsbLLhtKxF

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

ebrdykv.ua

http://ebrdykv.ua/search/?q=67e28dd86459a42c4009ab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff710c6e997933a

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3520-88-0x0000000000A20000-0x0000000000AC2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp
2308	freeaudioconverter.exe
3520	freeaudioconverter.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.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	91.211.247.248

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
1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 1984	4888	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe	79
PID 4888 wrote to memory of 1984	4888	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe	79
PID 4888 wrote to memory of 1984	4888	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe	79
PID 1984 wrote to memory of 2308	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	81
PID 1984 wrote to memory of 2308	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	81
PID 1984 wrote to memory of 2308	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	81
PID 1984 wrote to memory of 3520	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	82
PID 1984 wrote to memory of 3520	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	82
PID 1984 wrote to memory of 3520	1984	f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp	82

C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe
"C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Users\Admin\AppData\Local\Temp\is-97PUE.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-97PUE.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp" /SL5="$40204,4935675,54272,C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe
    "C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2308
- - C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe
    "C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -s
    3⤵
    - Executes dropped EXE
    PID:3520

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe

Filesize
3.2MB

MD5
0a865bfbaa646a3e59b470406e88e970

SHA1
b82ff5f8448032602e3fc694cc2ade8938cb026b

SHA256
9ee466605c1c47f49a4bbe67c41e9d46fee914477eff657bcc8b06844155ad4b

SHA512
86ac722f10952dc83a5659930ee9d1ec9792c54e7818a5ed1280a8983aa34c5c529c0f488976d8bc144ea6c2b494f014d1bad1dea2a946d32cef465e58360706

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-40HT5.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-97PUE.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp

Filesize
680KB

MD5
9bb8c76757a1b6b0a856e84abc7f76e5

SHA1
261c49666d14641a4976700e84e7eb3436233ccb

SHA256
d813e79399dda10a79eefb75b807e7b197254c33baaaf4e479ad917b47a01a4d

SHA512
66ca42349cfe56d70562ab869a4a0072ce4c9e2ca0e5c643da989cf15a89e7454d3e4a5e6eb78c5ba6af38e2cdcbe2ba98a549039ceca320c8c7d81d807476c5

Download Submit
memory/1984-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1984-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2308-60-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/2308-59-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/2308-63-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/2308-65-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-72-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-88-0x0000000000A20000-0x0000000000AC2000-memory.dmp

Filesize
648KB

Download
memory/3520-68-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-118-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-115-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-111-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-75-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-76-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-79-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-82-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-85-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-69-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-90-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-96-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-99-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-102-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-105-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/3520-108-0x0000000000400000-0x000000000072D000-memory.dmp

Filesize
3.2MB

Download
memory/4888-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4888-3-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/4888-70-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing