socks5systemz | 42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198

General

Target

42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe
Size

2.2MB
MD5

f1fb97a8723b3753f5d895fd486d4519
SHA1

52815c506e6d8b1efd93087ef95642b3030713f6
SHA256

42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198
SHA512

facda49f4efc9aa246d12021da6620072318f24088d3ab319928245cd038ffe4ce6b9fe4697fa9bcb37f35e84a36c62b8f76f0fe8573def8aade309759d900db
SSDEEP

49152:32miWIdYUJkCUtscwHtojpdYLM5uiR6927UnQhwG31gKNB:mGaXAyojMM5z6M6GwG31JB

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://bouozoi.com/search/?q=67e28dd8690ea77a165faf187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978a371ea771795af8e05c645db22f31df92d8838ed12a666d307eca743ec4c2b07b52966923a678af915c6ea93

http://bouozoi.com/search/?q=67e28dd8690ea77a165faf187c27d78406abdd88be4b12eab517aa5c96bd86e8908e4f845a8bbc896c58e713bc90c91136b5281fc235a925ed3e00d6bd974a95129070b616e96cc92be20ea478cc51bbe358b90d3b4eed3233d1626a8ff810c0eb939e3dc869

Signatures

Detect Socks5Systemz Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4604-67-0x0000000000820000-0x00000000008C4000-memory.dmp	family_socks5systemz
behavioral2/memory/4604-77-0x0000000000820000-0x00000000008C4000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 3 IoCs

pid	Process
3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp
2756	linkdetector32.exe
4604	linkdetector32.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.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 WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4232 wrote to memory of 3048	4232	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe	72
PID 4232 wrote to memory of 3048	4232	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe	72
PID 4232 wrote to memory of 3048	4232	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe	72
PID 3048 wrote to memory of 2756	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	73
PID 3048 wrote to memory of 2756	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	73
PID 3048 wrote to memory of 2756	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	73
PID 3048 wrote to memory of 4604	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	74
PID 3048 wrote to memory of 4604	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	74
PID 3048 wrote to memory of 4604	3048	42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp	74

C:\Users\Admin\AppData\Local\Temp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe
"C:\Users\Admin\AppData\Local\Temp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Users\Admin\AppData\Local\Temp\is-N8ID1.tmp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-N8ID1.tmp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp" /SL5="$7022C,1939252,54272,C:\Users\Admin\AppData\Local\Temp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Users\Admin\AppData\Local\Broken Link Detector\linkdetector32.exe
    "C:\Users\Admin\AppData\Local\Broken Link Detector\linkdetector32.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2756
- - C:\Users\Admin\AppData\Local\Broken Link Detector\linkdetector32.exe
    "C:\Users\Admin\AppData\Local\Broken Link Detector\linkdetector32.exe" -s
    3⤵
    - Executes dropped EXE
    PID:4604

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\Broken Link Detector\linkdetector32.exe

Filesize
2.4MB

MD5
a7c3dae89165d04afaeeb73798441f85

SHA1
5057177e2b5f0eaad96e5507c955f989a69dc9fe

SHA256
2b160075e509257354bccaca999725f269377706610d596cb9bed45e4bb498af

SHA512
c552d4828a4498813e251b0c0c908b778f2bef3e8aeb66e06607e5719bc7c0860adec778247e9ed79f6360e166b3cf7420085c23e074fd5a6bbecbddc8cc7b9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-N8ID1.tmp\42253ff18d5d70c19fe78640898d93ca712fe39d7e53b939138716b71e216198.tmp

Filesize
677KB

MD5
33da9dc521f467c0405d3ef5377ce04b

SHA1
5249d7ce5dfabe5ee6d2fc7d3f3eba1e866b7d1f

SHA256
dbab8a7b2b45fc7001d5e34d3d45ccbe93a7591f12910281acf2c32f8c4e631c

SHA512
a3093637e1d731eab58080e10706db1afbf6e79fbac6593733b61033f97875ecbe230311e9741d349625ec3a66a6435318846d35290db8cd00af76d692699a55

Download Submit
\Users\Admin\AppData\Local\Temp\is-37R02.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/2756-38-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/2756-39-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/2756-40-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/2756-42-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/3048-48-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3048-6-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/3048-50-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/4232-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4232-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4604-60-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-76-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-46-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-53-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-54-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-57-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-45-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-63-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-66-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-67-0x0000000000820000-0x00000000008C4000-memory.dmp

Filesize
656KB

Download
memory/4604-73-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-49-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-77-0x0000000000820000-0x00000000008C4000-memory.dmp

Filesize
656KB

Download
memory/4604-80-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-83-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-86-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-89-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-93-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-96-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-99-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-102-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-105-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-108-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download
memory/4604-113-0x0000000000400000-0x000000000066B000-memory.dmp

Filesize
2.4MB

Download

Analysis

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