socks5systemz | 1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8

General

Target

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe
Size

5.0MB
MD5

915ca029bb259f339cbf12728e87d38b
SHA1

61dec59da649eeca4d1058ca346f399e60592c2d
SHA256

1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8
SHA512

d229b4096609194cd2fb770d8846fc751bfa3f34b8c99f3f33e62f143648045050f8faaeed7145aa931666369093c924afa4ae0f48f50054d34ec1ee9b57cffb
SSDEEP

98304:mZs9TCAas88G0/J8LYe++PVbcrs1NoNI7bb8fJ8bG+lqAKop+3gXtyuqa3cI0UQ:hD//6LYe+kV4rISub8fJO8A2gd6a3Ng

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

butmiju.com

kbgiyqa.ua

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2368-92-0x0000000002230000-0x00000000022D2000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
2632	m4atomp3converter.exe
2368	m4atomp3converter.exe

Loads dropped DLL 5 IoCs

pid	Process
2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

Unexpected DNS network traffic destination 13 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
Destination IP	45.155.250.90
Destination IP	91.211.247.248
Destination IP	81.31.197.38
Destination IP	152.89.198.214
Destination IP	81.31.197.38
Destination IP	91.211.247.248
Destination IP	141.98.234.31
Destination IP	152.89.198.214
Destination IP	45.155.250.90
Destination IP	141.98.234.31
Destination IP	152.89.198.214
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
1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 2128 wrote to memory of 1656	2128	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe	28
PID 1656 wrote to memory of 2632	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	29
PID 1656 wrote to memory of 2632	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	29
PID 1656 wrote to memory of 2632	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	29
PID 1656 wrote to memory of 2632	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	29
PID 1656 wrote to memory of 2368	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	30
PID 1656 wrote to memory of 2368	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	30
PID 1656 wrote to memory of 2368	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	30
PID 1656 wrote to memory of 2368	1656	1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp	30

C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe
"C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\is-3BFQV.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3BFQV.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp" /SL5="$30144,4963989,54272,C:\Users\Admin\AppData\Local\Temp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:1656
- - C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2632
- - C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2368

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

\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe

Filesize
3.1MB

MD5
ec0f3158d5afd17be39133044b926a9e

SHA1
8506c10216959bf3fd5be3f6feb845c0424874a1

SHA256
c2c221e2beadceb56a1914c4561de953a307683ace06ef704135683dd85dcc58

SHA512
f12cccfd80d745fd3b1464c88e8954cdc1f1c8f6de2a71a769e06c3eb58a808e7a805ca5d2d1d7dfb085a7a8815283a87c3266ed0ebf3a9bd82ec9112d5d5a33

Download Submit
\Users\Admin\AppData\Local\Temp\is-1S8AK.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-1S8AK.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-3BFQV.tmp\1b7ea6270b2aec5b56743055932b078657b9756c49591b1e8f3eb65b1280f7e8.tmp

Filesize
680KB

MD5
283da5c763c54b41092d9fe0d244b491

SHA1
d5e6a5b76a18c5a1d68244f2c3697bd8881fcf03

SHA256
339d2ff372992255baddd6d21cc15045b42780b25d251f570480e1aacdd00ad9

SHA512
306815b5fd5c387ffd9705097271edf5851cee7c28d1bc707813ce26714e8f722b8a34f73c43903ab6e7303dafc6ab6fa48262e487d86124c037879618cbd45a

Download Submit
memory/1656-9-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1656-63-0x0000000004220000-0x000000000453F000-memory.dmp

Filesize
3.1MB

Download
memory/1656-78-0x0000000004220000-0x000000000453F000-memory.dmp

Filesize
3.1MB

Download
memory/1656-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2128-73-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2128-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2128-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2368-104-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-98-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-134-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-75-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-131-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-79-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-82-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-85-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-88-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-91-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-92-0x0000000002230000-0x00000000022D2000-memory.dmp

Filesize
648KB

Download
memory/2368-71-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-101-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-128-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-107-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-110-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-113-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-116-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-119-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-122-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2368-125-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2632-65-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2632-66-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download
memory/2632-69-0x0000000000400000-0x000000000071F000-memory.dmp

Filesize
3.1MB

Download

Analysis

Sharing