socks5systemz | c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c

General

Target

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe
Size

4.8MB
MD5

5d8055b24f8de136efb5aead32d4a3ab
SHA1

dcd60c427b961a0527b264007eb53beee3966eae
SHA256

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c
SHA512

f96573abc8ae111477fe6ff35228dbffe8bb13ac2baa8ecd020889eaacbdd101bf08c9c3633c3f46542ed5f93d940232c68736c1c42746095dd1959c0b92b9e9
SSDEEP

98304:mHprs5EUU63Sc+mPywD4wEvmBRnWRCDoDiOGa8yeJkbtlUiw3c/C:KpmEHcjHBEvrRCxOGa8y4+/C

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

buewgke.com

Signatures

Detect Socks5Systemz Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1652-87-0x0000000000A10000-0x0000000000AB2000-memory.dmp	family_socks5systemz

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

Processes:

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmpm4atomp3converter.exem4atomp3converter.exe

pid process

4448 c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
4248 m4atomp3converter.exe
1652 m4atomp3converter.exe
Loads dropped DLL 1 IoCs

Processes:

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

pid process

4448 c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
Unexpected DNS network traffic destination 3 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
Destination IP 152.89.198.214
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:

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

pid process

4448 c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

pid	process
4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
4248	m4atomp3converter.exe
1652	m4atomp3converter.exe

pid	process
4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

description	ioc
Destination IP	45.155.250.90
Destination IP	152.89.198.214
Destination IP	91.211.247.248

pid	process
4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exec5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp

description	pid	process	target process
PID 1988 wrote to memory of 4448	1988	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
PID 1988 wrote to memory of 4448	1988	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
PID 1988 wrote to memory of 4448	1988	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
PID 4448 wrote to memory of 4248	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe
PID 4448 wrote to memory of 4248	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe
PID 4448 wrote to memory of 4248	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe
PID 4448 wrote to memory of 1652	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe
PID 4448 wrote to memory of 1652	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe
PID 4448 wrote to memory of 1652	4448	c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp	m4atomp3converter.exe

C:\Users\Admin\AppData\Local\Temp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe
"C:\Users\Admin\AppData\Local\Temp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1988

C:\Users\Admin\AppData\Local\Temp\is-KTCHN.tmp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
"C:\Users\Admin\AppData\Local\Temp\is-KTCHN.tmp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp" /SL5="$4021C,4766802,54272,C:\Users\Admin\AppData\Local\Temp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4448

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:4248

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:1652

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
Filesize
2.9MB

MD5
84703fb5d6dff9f2ae9263b8f97ee5c2

SHA1
d8f29c4d5ecb258dd42ad7938f6dee226cb5dbed

SHA256
3c063a0ba4e6a2047ffb4e4e5f6fe3b295673ef58c3c75e3c79e07f1d370c858

SHA512
b9e7367be5612ac4a6fefc65780b7535229ceef47e23f737cc86b9a2e83e7db5106e348ec430f3d3ad03ca7d1264082b349d13f954f1ed514380de7d783845b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-37OLA.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KTCHN.tmp\c5ff5663bbfcd828dff42225e3b2250d6bb9590e1c0df2177ed2a734358ffb0c.tmp
Filesize
680KB

MD5
984e6b8a7e6fa5cbf5a45904b1defc00

SHA1
37ce92d6cf1a117a191d14cc7fa1a6a97c05c967

SHA256
3313fd9ad369bdee368d356036858a7fcc6182175a30a92a6b73e41e1b2a5eb7

SHA512
55af997bfcc532ff01e593471197555432481587c263eb3777e511c656e030edd6c34edce0778b07e117dae4b9ed18976d2ec5c2fe127511a5f29928223ab7c8

Download Submit
memory/1652-91-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-76-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-117-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-114-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-111-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-108-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-105-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-67-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-69-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-102-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-99-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-72-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-75-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-96-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-79-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-82-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-85-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/1652-87-0x0000000000A10000-0x0000000000AB2000-memory.dmp

Filesize
648KB

Download
memory/1988-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1988-70-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1988-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4248-65-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/4248-63-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/4248-59-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/4248-60-0x0000000000400000-0x00000000006EC000-memory.dmp

Filesize
2.9MB

Download
memory/4448-12-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4448-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing