socks5systemz | 4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb

Analysis

max time kernel
142s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 01:58

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General

Target

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe
Size

5.0MB
MD5

b95750988f8f125fb08acf266113c6b5
SHA1

71683fd0f8c69e40602ac3c3f34826dafd883455
SHA256

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb
SHA512

9020b1c1001f45f3eaff6813821189ae3640a6ae10a2fa695a4ce00b551ccc7b27c7b2a863e183c4627325f8f4a214177a256e747872e79ca4bb3eca4050cb4b
SSDEEP

98304:C0CK5VDhi+rx9z0EW2k7P58ADKLdjQH0vNHgX17OKMDQBQx9W:Iini+LwEWH7xkhjQHOg5gcBQa

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3096-87-0x0000000000A40000-0x0000000000AE2000-memory.dmp	family_socks5systemz
behavioral1/memory/3096-110-0x0000000000A40000-0x0000000000AE2000-memory.dmp	family_socks5systemz
behavioral1/memory/3096-111-0x0000000000A40000-0x0000000000AE2000-memory.dmp	family_socks5systemz

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

Processes:

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmpvkfreeaudiosaver32_64.exevkfreeaudiosaver32_64.exe

pid process

4828 4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
3380 vkfreeaudiosaver32_64.exe
3096 vkfreeaudiosaver32_64.exe
Loads dropped DLL 1 IoCs

Processes:

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

pid process

4828 4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.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:

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

pid process

4828 4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

pid	process
4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
3380	vkfreeaudiosaver32_64.exe
3096	vkfreeaudiosaver32_64.exe

pid	process
4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

description	ioc
Destination IP	141.98.234.31

pid	process
4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp

description	pid	process	target process
PID 3184 wrote to memory of 4828	3184	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
PID 3184 wrote to memory of 4828	3184	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
PID 3184 wrote to memory of 4828	3184	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
PID 4828 wrote to memory of 3380	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe
PID 4828 wrote to memory of 3380	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe
PID 4828 wrote to memory of 3380	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe
PID 4828 wrote to memory of 3096	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe
PID 4828 wrote to memory of 3096	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe
PID 4828 wrote to memory of 3096	4828	4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp	vkfreeaudiosaver32_64.exe

C:\Users\Admin\AppData\Local\Temp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe
"C:\Users\Admin\AppData\Local\Temp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3184

C:\Users\Admin\AppData\Local\Temp\is-FNNCK.tmp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
"C:\Users\Admin\AppData\Local\Temp\is-FNNCK.tmp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp" /SL5="$401CC,4996539,54272,C:\Users\Admin\AppData\Local\Temp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4828

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -i
3⤵
- Executes dropped EXE
PID:3380

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -s
3⤵
- Executes dropped EXE
PID:3096

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\is-FNNCK.tmp\4c754926d4d5f796b767c08f31d3438e9cd3543c2141325df5eb7c803ebccfbb.tmp
Filesize
680KB

MD5
70295416713c0ce535665d806e3d54ac

SHA1
fe13c334ec67412f41fe190f93da7d45a57eccbd

SHA256
958c5f807a8268b09828e0f02a6c75a92f3a87dbd1853eb62e5996db990ba2ba

SHA512
2336597fb6ffe697ba62cd931479108556fee44319176989f961ae43aea62b111df6870a169202c6d960aface42779a2f82db48a69fe2072b711a512812f925c

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

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe
Filesize
3.5MB

MD5
19f632a359e2e872c4ffc590dba18c39

SHA1
9ff7aeefb0586be51a53667ec2b0b017a943e24e

SHA256
c18105a5ee19b3f05e6e245b515b8f04657564daa7cba835d2eebf5c5966a08e

SHA512
0d9a7cf3a0e865a07e844371a9ec750b6a85e9626ef945afcad1389492fe24b56bd51f307737df7366ce45d608ed79b2a493d5e1c1cf7a70a0f43b7b3b035807

Download Submit
memory/3096-94-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-78-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-118-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-115-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-111-0x0000000000A40000-0x0000000000AE2000-memory.dmp

Filesize
648KB

Download
memory/3096-110-0x0000000000A40000-0x0000000000AE2000-memory.dmp

Filesize
648KB

Download
memory/3096-109-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-68-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-106-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-103-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-71-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-74-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-75-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-100-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-81-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-84-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-87-0x0000000000A40000-0x0000000000AE2000-memory.dmp

Filesize
648KB

Download
memory/3096-89-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3096-97-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3184-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3184-69-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3184-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3380-65-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3380-63-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3380-60-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3380-59-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4828-10-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4828-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download