socks5systemz | 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9

General

Target

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
Size

4.8MB
MD5

386c7d06155d8754f0eeddf9a984eef2
SHA1

1613630666cb0ba426ad0acf0cb8a6d7ee0d2a4e
SHA256

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9
SHA512

5e2e1b8229e5e6026277b1630cc718592667aeef3603979ca0a08f137856f3ebed5765dd699107db0646ced40d8e2ffa539877272ab62b4ac52e179ef0f39f82
SSDEEP

98304:my5CT2EQsbOgvAi9VaFgWoTKOwTuKRygJlt4A5nG/C:1CT2Hgvbbm4JwSKRy+BVG/C

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

bhvfdte.com

http://bhvfdte.com/search/?q=67e28dd8690ba728400aae4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff718c2ec93983d

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3644-84-0x00000000008E0000-0x0000000000982000-memory.dmp	family_socks5systemz

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

Processes:

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmpm4atomp3converter.exem4atomp3converter.exe

pid process

408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
220 m4atomp3converter.exe
3644 m4atomp3converter.exe
Loads dropped DLL 1 IoCs

Processes:

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

pid process

408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.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 152.89.198.214
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:

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

pid process

408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

pid	process
408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
220	m4atomp3converter.exe
3644	m4atomp3converter.exe

pid	process
408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

description	ioc
Destination IP	152.89.198.214

pid	process
408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

description	pid	process	target process
PID 2688 wrote to memory of 408	2688	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
PID 2688 wrote to memory of 408	2688	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
PID 2688 wrote to memory of 408	2688	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
PID 408 wrote to memory of 220	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe
PID 408 wrote to memory of 220	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe
PID 408 wrote to memory of 220	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe
PID 408 wrote to memory of 3644	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe
PID 408 wrote to memory of 3644	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe
PID 408 wrote to memory of 3644	408	51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp	m4atomp3converter.exe

C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
"C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2688

C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
"C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp" /SL5="$50234,4801606,54272,C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:408

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:220

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:3644

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\M4A to MP3 Free Converter\m4atomp3converter.exe

Filesize
2.9MB

MD5
98889915a7331404165b1b921af5c5e7

SHA1
1300f471cb455cf375eefc63c6f07ba955e14174

SHA256
cef231d56d9ba3b136f92be995e89d39dd4d08eae57a34e03bc762b658b195e9

SHA512
e6282b56925afcb7504ae2cc526964043ed0c1a6a10385ecae561dcc70345d8e5846ed2b2596a8a6469dba5cb9327fcc267c091c77172d269b56b69d4fc5e103

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp

Filesize
680KB

MD5
984e6b8a7e6fa5cbf5a45904b1defc00

SHA1
37ce92d6cf1a117a191d14cc7fa1a6a97c05c967

SHA256
3313fd9ad369bdee368d356036858a7fcc6182175a30a92a6b73e41e1b2a5eb7

SHA512
55af997bfcc532ff01e593471197555432481587c263eb3777e511c656e030edd6c34edce0778b07e117dae4b9ed18976d2ec5c2fe127511a5f29928223ab7c8

Download Submit
\Users\Admin\AppData\Local\Temp\is-G91EL.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/220-59-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/220-60-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/220-64-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/408-7-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/408-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2688-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2688-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3644-78-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-97-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-75-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-69-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-81-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-84-0x00000000008E0000-0x0000000000982000-memory.dmp

Filesize
648KB

Download
memory/3644-86-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-91-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-94-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-72-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-100-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-103-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-106-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-110-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-113-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-116-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-119-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-122-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-125-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/3644-130-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download

Analysis

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