socks5systemz | 6bd2bcb51574eb7e2e18a9a784113c48543f20a1758275a2d141ddc0d22dedc5

General

Target

7272273eb523020414a5a02f91a3922a.exe
Size

3.9MB
MD5

7272273eb523020414a5a02f91a3922a
SHA1

3bdf99591a1949cad49f3649590430c927110b86
SHA256

6bd2bcb51574eb7e2e18a9a784113c48543f20a1758275a2d141ddc0d22dedc5
SHA512

43b4a0497f89eda59c8e24e552c9af33f2bc84ead0f52027130664eafa9c448b896198cdecf1b8edd127a0184bae9e26e4550d20bd8443304404949c5975f77a
SSDEEP

98304:7ank3YFLhyADS1cWwcD1qTNOdZXfGbfdjCaN09iyJp:B3YFEZcvIvubdjCd

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

http://csswder.net/search/?q=67e28dd86b5ca721490da9197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a571ea771795af8e05c644db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffc14c0e892933b

http://csswder.net/search/?q=67e28dd86b5ca721490da9197c27d78406abdd88be4b12eab517aa5c96bd86ee9d864d815a8bbc896c58e713bc90c91936b5281fc235a925ed3e06d6bd974a95129070b617e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee969f3bca689f16

Signatures

Detect Socks5Systemz Payload 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4920-65-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral2/memory/4920-68-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral2/memory/4920-77-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral2/memory/4920-90-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz
behavioral2/memory/4920-91-0x0000000000910000-0x00000000009B2000-memory.dmp	family_socks5systemz

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

Processes:

is-GHMR6.tmpsimplefreewaveeditor.exesimplefreewaveeditor.exe

pid process

4932 is-GHMR6.tmp
2892 simplefreewaveeditor.exe
4920 simplefreewaveeditor.exe
Loads dropped DLL 1 IoCs

Processes:

is-GHMR6.tmp

pid process

4932 is-GHMR6.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 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

pid	process
4932	is-GHMR6.tmp
2892	simplefreewaveeditor.exe
4920	simplefreewaveeditor.exe

pid	process
4932	is-GHMR6.tmp

description	ioc
Destination IP	45.155.250.90

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

7272273eb523020414a5a02f91a3922a.exeis-GHMR6.tmp

description	pid	process	target process
PID 1920 wrote to memory of 4932	1920	7272273eb523020414a5a02f91a3922a.exe	is-GHMR6.tmp
PID 1920 wrote to memory of 4932	1920	7272273eb523020414a5a02f91a3922a.exe	is-GHMR6.tmp
PID 1920 wrote to memory of 4932	1920	7272273eb523020414a5a02f91a3922a.exe	is-GHMR6.tmp
PID 4932 wrote to memory of 2892	4932	is-GHMR6.tmp	simplefreewaveeditor.exe
PID 4932 wrote to memory of 2892	4932	is-GHMR6.tmp	simplefreewaveeditor.exe
PID 4932 wrote to memory of 2892	4932	is-GHMR6.tmp	simplefreewaveeditor.exe
PID 4932 wrote to memory of 4920	4932	is-GHMR6.tmp	simplefreewaveeditor.exe
PID 4932 wrote to memory of 4920	4932	is-GHMR6.tmp	simplefreewaveeditor.exe
PID 4932 wrote to memory of 4920	4932	is-GHMR6.tmp	simplefreewaveeditor.exe

C:\Users\Admin\AppData\Local\Temp\7272273eb523020414a5a02f91a3922a.exe
"C:\Users\Admin\AppData\Local\Temp\7272273eb523020414a5a02f91a3922a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1920

C:\Users\Admin\AppData\Local\Temp\is-7L2CA.tmp\is-GHMR6.tmp
"C:\Users\Admin\AppData\Local\Temp\is-7L2CA.tmp\is-GHMR6.tmp" /SL4 $F005C "C:\Users\Admin\AppData\Local\Temp\7272273eb523020414a5a02f91a3922a.exe" 3709989 52224
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4932

C:\Users\Admin\AppData\Local\Simple Free Wave Editor\simplefreewaveeditor.exe
"C:\Users\Admin\AppData\Local\Simple Free Wave Editor\simplefreewaveeditor.exe" -i
3⤵
- Executes dropped EXE
PID:2892

C:\Users\Admin\AppData\Local\Simple Free Wave Editor\simplefreewaveeditor.exe
"C:\Users\Admin\AppData\Local\Simple Free Wave Editor\simplefreewaveeditor.exe" -s
3⤵
- Executes dropped EXE
PID:4920

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Simple Free Wave Editor\simplefreewaveeditor.exe
Filesize
4.0MB

MD5
56b8f72726a17787936c8428d1e203b7

SHA1
01ab24f02a3573cdf5473a3d3d274fab564c9333

SHA256
5598295bb89377b3a1ad39c0c33363c1ee5b59abe7c358d250c76be6b115b9ba

SHA512
18c8cdc1ccfc485043edf2a8bc99c1b742f02b557dfdc394d797cf3aad166ac9d5923685df91f6a559c751f282e489d5e7e55d645323f405725d490f6c9bbe8a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3DUJ9.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7L2CA.tmp\is-GHMR6.tmp
Filesize
648KB

MD5
6b2d50f7b74945a2d03a39b16e1eb7be

SHA1
f3ff5ddcff5616327ae545e695f9b89941036919

SHA256
cdc40754b9af9a02ed5d9647c00d2cd7324ddd9b0ef0a64e3379c0a17e705039

SHA512
7f2548ab8c6af80d966e1855f1d9efb6aa876747c01b0478016cc9f47fbd8aebbc1a786bbb3c7160e532bebeeceac9ee4e5b359cbe7c203a2d9d62dcd0180f02

Download Submit
memory/1920-46-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1920-2-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1920-0-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2892-37-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/2892-38-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/2892-41-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/2892-42-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-53-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-80-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-98-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-48-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-95-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-52-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-91-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/4920-56-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-59-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-62-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-65-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/4920-66-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-68-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/4920-73-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-76-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-77-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/4920-45-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-83-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-86-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-89-0x0000000000400000-0x0000000000804000-memory.dmp

Filesize
4.0MB

Download
memory/4920-90-0x0000000000910000-0x00000000009B2000-memory.dmp

Filesize
648KB

Download
memory/4932-7-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/4932-49-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/4932-47-0x0000000000400000-0x00000000004B1000-memory.dmp

Filesize
708KB

Download

Analysis

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