socks5systemz | 4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae

Analysis

max time kernel
292s
max time network
252s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
01-07-2024 05:03

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General

Target

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe
Size

5.0MB
MD5

0c08920d01eeb7bc6e2c909e750d6183
SHA1

2221bfda019f34b8ad75a24e5d70d70613fe9f7e
SHA256

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae
SHA512

b61e6c4bc8474d205a6df9d48e059831947b372ff87c16f950b2d1cfde0102f2815bf61c3b8d1968d632a461d622103098a5760e44e72c0987d84aa208226e26
SSDEEP

98304:CbznFGZc1nc7Qbx59/31/sSZEq1N0D5dwt6ypECFUL9hdqqkQxj:EEMncEbx59f1Eq1qlKpEQyvhkQ9

Score

10^/10

socks5systemz botnet discovery

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource yara_rule

behavioral2/memory/4496-85-0x0000000000830000-0x00000000008D1000-memory.dmp family_socks5systemz
Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Executes dropped EXE 3 IoCs

Processes:

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exe

pid process

192 4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
4444 vkfreeaudiosaver.exe
4496 vkfreeaudiosaver.exe
Loads dropped DLL 1 IoCs

Processes:

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

pid process

192 4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.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 91.211.247.248
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:

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

pid process

192 4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

resource	yara_rule
behavioral2/memory/4496-85-0x0000000000830000-0x00000000008D1000-memory.dmp	family_socks5systemz

pid	process
192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
4444	vkfreeaudiosaver.exe
4496	vkfreeaudiosaver.exe

pid	process
192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

description	ioc
Destination IP	91.211.247.248

pid	process
192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp

description	pid	process	target process
PID 824 wrote to memory of 192	824	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
PID 824 wrote to memory of 192	824	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
PID 824 wrote to memory of 192	824	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
PID 192 wrote to memory of 4444	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe
PID 192 wrote to memory of 4444	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe
PID 192 wrote to memory of 4444	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe
PID 192 wrote to memory of 4496	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe
PID 192 wrote to memory of 4496	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe
PID 192 wrote to memory of 4496	192	4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp	vkfreeaudiosaver.exe

C:\Users\Admin\AppData\Local\Temp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe
"C:\Users\Admin\AppData\Local\Temp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:824

C:\Users\Admin\AppData\Local\Temp\is-3BCTK.tmp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
"C:\Users\Admin\AppData\Local\Temp\is-3BCTK.tmp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp" /SL5="$70220,4976259,54272,C:\Users\Admin\AppData\Local\Temp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:192

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -i
3⤵
- Executes dropped EXE
PID:4444

C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -s
3⤵
- Executes dropped EXE
PID:4496

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-3BCTK.tmp\4eff1ef626264e3f1d795dfd71ea0b217810b5902dcb46bf914e9466ba81aeae.tmp
Filesize
680KB

MD5
91abaa26324a0747e32442afeaf939d0

SHA1
90133d4c1b101d8fb8d05ed7cc005b2359f62b86

SHA256
0041e3aef210e7e0566bbb3ec0e5dc34f0d65ec5563a971fa862559da249736a

SHA512
a5c557fbc8dc8d44814a3527398da439d494568e7abaa32c0e28ec2417b1aba467a66311fc308bec8e8c7eff8bab6041a1dcc7e4e6360896de702ebbb46781e5

Download Submit
C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe
Filesize
3.3MB

MD5
0c66c4f91ef4a63c6fe9c2ed4ea725c8

SHA1
f5dc6d81d22329bb8944599ebad3f63324b8a0d0

SHA256
34ce10408fa0869b7bf4ffc253a8adc7e7b5375809fea8a538ca617884fa657f

SHA512
5525e31815477bb47d44446ab5c89d621766a1e5252326853ab3284934d84ea91099576113fd6a0f6c7fe6bdb368e6591a92cc1ddd2c0cb012bcb1f83b1c5ad1

Download Submit
\Users\Admin\AppData\Local\Temp\is-EAH8D.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/192-72-0x00007FFDE3620000-0x00007FFDE37FB000-memory.dmp

Filesize
1.9MB

Download
memory/192-16-0x00007FFDE3620000-0x00007FFDE37FB000-memory.dmp

Filesize
1.9MB

Download
memory/192-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/824-4-0x00007FFDE3620000-0x00007FFDE37FB000-memory.dmp

Filesize
1.9MB

Download
memory/824-67-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/824-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4444-59-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4444-60-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4444-64-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-82-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-98-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-76-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-79-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-69-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-85-0x0000000000830000-0x00000000008D1000-memory.dmp

Filesize
644KB

Download
memory/4496-87-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-92-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-95-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-73-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-101-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-104-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-108-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-111-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-114-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-117-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-120-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-123-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-126-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download
memory/4496-131-0x0000000000400000-0x0000000000745000-memory.dmp

Filesize
3.3MB

Download