socks5systemz | b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd

Analysis

max time kernel
141s
max time network
128s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 17:25

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General

Target

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe
Size

5.2MB
MD5

96db49dfdd5da4ff9f99ad285c055c75
SHA1

fd2525cf0f3d79d124420e832b70fc3a2703201e
SHA256

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd
SHA512

47decaebd0582d69a2beddfcb40569650e1394654d7a46a7bf02abc7bb5f2679ae486f892ab8d3b731afab2baab2afce5dfa3bc9e33db5e0b814d0b024a94dca
SSDEEP

98304:CY8T5Nt4kh56jFH9RIXMqIWuLpyLerMikg0Bq+Lvfcw4tEdJkHBBDaQxy:WNSfjh9RIIDly07yqOfcw4EKrDaQE

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5048-86-0x0000000000B40000-0x0000000000BE2000-memory.dmp	family_socks5systemz
behavioral2/memory/5048-110-0x0000000000B40000-0x0000000000BE2000-memory.dmp	family_socks5systemz
behavioral2/memory/5048-109-0x0000000000B40000-0x0000000000BE2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmpmp3doctorfree32_64.exemp3doctorfree32_64.exe

pid process

4152 b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
3704 mp3doctorfree32_64.exe
5048 mp3doctorfree32_64.exe
Loads dropped DLL 1 IoCs

Processes:

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

pid process

4152 b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

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

Processes:

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

pid process

4152 b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

pid	process
4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
3704	mp3doctorfree32_64.exe
5048	mp3doctorfree32_64.exe

pid	process
4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exeb4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp

description	pid	process	target process
PID 1948 wrote to memory of 4152	1948	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
PID 1948 wrote to memory of 4152	1948	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
PID 1948 wrote to memory of 4152	1948	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
PID 4152 wrote to memory of 3704	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe
PID 4152 wrote to memory of 3704	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe
PID 4152 wrote to memory of 3704	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe
PID 4152 wrote to memory of 5048	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe
PID 4152 wrote to memory of 5048	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe
PID 4152 wrote to memory of 5048	4152	b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp	mp3doctorfree32_64.exe

C:\Users\Admin\AppData\Local\Temp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe
"C:\Users\Admin\AppData\Local\Temp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1948

C:\Users\Admin\AppData\Local\Temp\is-8SUTN.tmp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
"C:\Users\Admin\AppData\Local\Temp\is-8SUTN.tmp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp" /SL5="$500DC,5244258,54272,C:\Users\Admin\AppData\Local\Temp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4152

C:\Users\Admin\AppData\Local\MP3Doctor Free 2020\mp3doctorfree32_64.exe
"C:\Users\Admin\AppData\Local\MP3Doctor Free 2020\mp3doctorfree32_64.exe" -i
3⤵
- Executes dropped EXE
PID:3704

C:\Users\Admin\AppData\Local\MP3Doctor Free 2020\mp3doctorfree32_64.exe
"C:\Users\Admin\AppData\Local\MP3Doctor Free 2020\mp3doctorfree32_64.exe" -s
3⤵
- Executes dropped EXE
PID:5048

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\MP3Doctor Free 2020\mp3doctorfree32_64.exe
Filesize
3.9MB

MD5
208d4c64ee806f4070683a67b93edfa2

SHA1
955a7b2f307daa3df7b14d142682cd0db9cd42d3

SHA256
83e046e94062e8a441f883fdd8a13b818a4a636f0a5bc1d0cef19e92686ea0da

SHA512
e0a4fa547f786d22042ec2c91e69497e0e4fd2738e3854865ccca963028ef40709f5be1455461bba8dfee5647d7c5c291feae1a1680905b61b9b487a8d78f939

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8SUTN.tmp\b4538aa8dee7e47b5b243096ccb57cb5d9ea495f3b3f983f30ebad1d4e13d9cd.tmp
Filesize
680KB

MD5
6f995e2d6c8d0d1d03cb3afcd1deafaf

SHA1
0319dbd8c7b44067b82fed5272059757a526b3aa

SHA256
cc4530fee96cf6e821fa1dbed0c46ac5310c57d6336999e3f93d29f78376f9eb

SHA512
207b4d327be81e71152ce35cb272362e9862e6002a6c01e9e9df37578c3764ac1c8d19b19e8e3b751162724490f06fea10611d7becabaff3863af993a90db16d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MFN94.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/1948-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1948-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1948-68-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3704-59-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/3704-63-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/3704-64-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/3704-60-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/4152-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4152-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/5048-73-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-93-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-67-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-74-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-77-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-80-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-83-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-86-0x0000000000B40000-0x0000000000BE2000-memory.dmp

Filesize
648KB

Download
memory/5048-87-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-70-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-96-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-99-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-102-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-105-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-108-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-110-0x0000000000B40000-0x0000000000BE2000-memory.dmp

Filesize
648KB

Download
memory/5048-109-0x0000000000B40000-0x0000000000BE2000-memory.dmp

Filesize
648KB

Download
memory/5048-114-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download
memory/5048-117-0x0000000000400000-0x00000000007F5000-memory.dmp

Filesize
4.0MB

Download