socks5systemz | 420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365

General

Target

420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe
Size

5.2MB
MD5

253e324d58c3a337d3e4eb594debc611
SHA1

462c847edc0d7b2f9a2a4bb352e31c09c6658521
SHA256

420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365
SHA512

152fa74ce37f89aa2710aaf45a19cfc330336ca0c6c5a5bc27a27719a5291099817995cdd044c620b724e430ede031fdc1c1bfa31a803f672cb92e8234b717d4
SSDEEP

98304:+P6cR94aMSjhhZ2GVx+DUU4sSWUz5b3rHhmGfSkXHo8OKGUGBAUCWXadwU9XZUfL:+j6ahtJVwUMUdfHht9OKGjt0wUdm1X9

Score

10^/10

socks5systemz botnet discovery

Malware Config

Extracted

Family

socks5systemz

C2

butlwul.com

http://butlwul.com/search/?q=67e28dd83a09f729130ead4a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608afd12c3e897933a

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4432-96-0x0000000000950000-0x00000000009F2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 3 IoCs

pid	Process
5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp
5308	tunejenimmusicconverter.exe
4432	tunejenimmusicconverter.exe

Loads dropped DLL 3 IoCs

pid	Process
5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp
5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp
5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp

Unexpected DNS network traffic destination 3 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	flow	ioc	pid	Process
Destination IP	43	152.89.198.214	4432	tunejenimmusicconverter.exe
Destination IP	45	91.211.247.248	4432	tunejenimmusicconverter.exe
Destination IP	41	141.98.234.31	4432	tunejenimmusicconverter.exe

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

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tunejenimmusicconverter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tunejenimmusicconverter.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 5216	1036	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe	88
PID 1036 wrote to memory of 5216	1036	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe	88
PID 1036 wrote to memory of 5216	1036	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe	88
PID 5216 wrote to memory of 5308	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	90
PID 5216 wrote to memory of 5308	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	90
PID 5216 wrote to memory of 5308	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	90
PID 5216 wrote to memory of 4432	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	91
PID 5216 wrote to memory of 4432	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	91
PID 5216 wrote to memory of 4432	5216	420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp	91

C:\Users\Admin\AppData\Local\Temp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe
"C:\Users\Admin\AppData\Local\Temp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Users\Admin\AppData\Local\Temp\is-2DGMF.tmp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-2DGMF.tmp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp" /SL5="$50182,5237355,54272,C:\Users\Admin\AppData\Local\Temp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5216
- - C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\tunejenimmusicconverter.exe
    "C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\tunejenimmusicconverter.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5308
- - C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\tunejenimmusicconverter.exe
    "C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\tunejenimmusicconverter.exe" -s
    3⤵
    - Executes dropped EXE
    - Unexpected DNS network traffic destination
    - System Location Discovery: System Language Discovery
    PID:4432

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\is-2DGMF.tmp\420937a5f19ae02fc11ba9407ba4560e2298131fafbc3d19e5267e9a67630365.tmp

Filesize
695KB

MD5
192d1bbcb8a9057a375c9dead4ea259e

SHA1
24b743484e1c8d6d88c4b5a9ab01e6e722d4344d

SHA256
e39119fddd878b2c0652bc52a65ce8cfc21bde1fe7b4556948a5030446a3c86a

SHA512
926daf8b618a2374e527735c67e0e233486bba236de5ac2d231b3427b841a97600b1b846df2c1749c988814a1e045099dbe26a1937a9d2291c9d5ef8746b0d44

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-E8H1F.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-E8H1F.tmp\_isetup\_isdecmp.dll

Filesize
32KB

MD5
b6f11a0ab7715f570f45900a1fe84732

SHA1
77b1201e535445af5ea94c1b03c0a1c34d67a77b

SHA256
e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

SHA512
78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

Download Submit
C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\libeay32.dll

Filesize
2.3MB

MD5
5afad5dd0bae7f01c2be79f9f168c9e8

SHA1
553fe32e9cc002b3357c11de74478b85b04657bc

SHA256
4c5c6debe9453f0343f163aa72b7049f3167bc08d3b2d549fcabc4ee6bfbafcd

SHA512
3f78196965db2fa5f6a13fecd9d93abbbaafaa52a6b43e8bd957d3b1e52bc3930db2d72e79cd34315f56b9758ed37a5d6b122533351d90296abfe8ca7f62fb3f

Download Submit
C:\Users\Admin\AppData\Local\Tune Jenim Music Converter\tunejenimmusicconverter.exe

Filesize
2.7MB

MD5
b09197c9294a53e5d6fcb4eab3a8e5d6

SHA1
b55819aeaed90230b8de465ea3f8a30c23cb8079

SHA256
08bc72989be9f1b6167d7990f049d687086822d78f57483301d553f812b9f946

SHA512
19a7209cc05de7840416f41d018bdba3e64a347fc860c6fed063120a52685df52e122a1a173e25441cae719576b1b2781313175dcf8bafab8255abe957240fec

Download Submit
memory/1036-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/1036-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1036-77-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4432-116-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-97-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-141-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-138-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-75-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-135-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-132-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-79-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-80-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-83-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-86-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-89-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-92-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-129-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-96-0x0000000000950000-0x00000000009F2000-memory.dmp

Filesize
648KB

Download
memory/4432-104-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-107-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-110-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-113-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-125-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-119-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/4432-122-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/5216-10-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5216-76-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5308-69-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/5308-65-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/5308-66-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download
memory/5308-71-0x0000000000400000-0x00000000006B7000-memory.dmp

Filesize
2.7MB

Download

Analysis

Sharing