socks5systemz | 52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929

General

Target

52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe
Size

5.5MB
MD5

4634986a760b0500ab6d6f2fcd747ddb
SHA1

bb674371c6f1a6db7a644d1ac07fb199489dedcc
SHA256

52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929
SHA512

6f68c34eb0b6e6024827f5b7023d5455f892d9bab9ee5446a8637cb5f26b63522ee9a4571c28ef564eac03c3ed0d1ce1989fe190394406cb09c6d7369e3b4681
SSDEEP

98304:CoCNn2faUENXT5qBWKnGe+r0eeHCZ7O7ZbKFvxfeEoxeQxO:un2falNk0KnGF0eeHCcsx2LQQQ

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2992-197-0x00000000028E0000-0x0000000002982000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
2992	avitb.exe

Loads dropped DLL 5 IoCs

pid	Process
2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp

Unexpected DNS network traffic destination 1 IoCs

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

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

System Location Discovery: System Language Discovery 1 TTPs 3 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	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avitb.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 2612 wrote to memory of 340	2612	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe	30
PID 340 wrote to memory of 2992	340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp	31
PID 340 wrote to memory of 2992	340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp	31
PID 340 wrote to memory of 2992	340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp	31
PID 340 wrote to memory of 2992	340	52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp	31

C:\Users\Admin\AppData\Local\Temp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe
"C:\Users\Admin\AppData\Local\Temp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612
- C:\Users\Admin\AppData\Local\Temp\is-VBFF7.tmp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-VBFF7.tmp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp" /SL5="$400F4,5480148,54272,C:\Users\Admin\AppData\Local\Temp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:340
- - C:\Users\Admin\AppData\Local\AVIToolbox\avitb.exe
    "C:\Users\Admin\AppData\Local\AVIToolbox\avitb.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2992

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\AVIToolbox\avitb.exe

Filesize
2.7MB

MD5
5d2621b3fae9845cedbbc45514b5e096

SHA1
e60cdbad8efe9f90b2e3e031b2746327ab8d43f9

SHA256
06ddaef53cfc7d256bad330c33bd8afc5097393e31bf5f69654420077397008c

SHA512
cbf724f03e346e518c5e095ce0ec082c5b6007dbec32bb2df8ee9f33e20b84ccc15df7b76be269902cce5c4530b706579beb1ed9afaf7af04cf616f396bd1fb6

Download Submit
\Users\Admin\AppData\Local\Temp\is-CPVIJ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-CPVIJ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-VBFF7.tmp\52e6402c5424dd78e23e8e50c61b267b3438e20a2af9745769292905d9a5f929.tmp

Filesize
680KB

MD5
9ea6d1ca7704ef0338de4698b487cfec

SHA1
51e324376ba93d45da72213573b4ff8be4f2bf32

SHA256
7c236c941ba0b7330e08f508da7fea10037992dcde872a7f3efd999ca1cfba58

SHA512
134a19b9e36145a81c6d9e6f0adfc86d164ad48d065784b7180b0fd44947b9d96e33ae17e93b23f741830c690d6b8f28eba72be661e6e6366c2d0c982f9f0954

Download Submit
memory/340-9-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/340-173-0x0000000005A20000-0x0000000005CD8000-memory.dmp

Filesize
2.7MB

Download
memory/340-206-0x0000000005A20000-0x0000000005CD8000-memory.dmp

Filesize
2.7MB

Download
memory/340-178-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2612-179-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2612-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2612-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2992-187-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-174-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-184-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-175-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-190-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-193-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-196-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-197-0x00000000028E0000-0x0000000002982000-memory.dmp

Filesize
648KB

Download
memory/2992-203-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-181-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-207-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-210-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-213-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-216-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-219-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-223-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download
memory/2992-226-0x0000000000400000-0x00000000006B8000-memory.dmp

Filesize
2.7MB

Download

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