socks5systemz | 4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b

General

Target

4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe
Size

5.4MB
MD5

f278453e3ecc3f4d81206af45cbde309
SHA1

eb25b4c08ba5ab634e3edd7c69b44027e26766f3
SHA256

4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b
SHA512

e3b846be988cb76e26190f20f2c1438820f9b83b797ee50d38b9e17a32dbc35c636933ec3eac108da838d275362c339508bc8cd313c9c97048c031ef745b7c55
SSDEEP

98304:Q5hcX+90qggBsJwkybniXKOkZ79W9EeNAuiRSs08h7+v9F:WhcyVLWJwkgniXKfZxBeeuiIs5ib

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1976-193-0x0000000002880000-0x0000000002922000-memory.dmp	family_socks5systemz

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

Executes dropped EXE 2 IoCs

pid	Process
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
1976	mp4down32.exe

Loads dropped DLL 5 IoCs

pid	Process
2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.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	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

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	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mp4down32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 2088 wrote to memory of 3028	2088	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe	30
PID 3028 wrote to memory of 1976	3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp	31
PID 3028 wrote to memory of 1976	3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp	31
PID 3028 wrote to memory of 1976	3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp	31
PID 3028 wrote to memory of 1976	3028	4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp	31

C:\Users\Admin\AppData\Local\Temp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe
"C:\Users\Admin\AppData\Local\Temp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Users\Admin\AppData\Local\Temp\is-51DN2.tmp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-51DN2.tmp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp" /SL5="$30146,5393646,54272,C:\Users\Admin\AppData\Local\Temp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Users\Admin\AppData\Local\MP4 Downloader 1.33.7\mp4down32.exe
    "C:\Users\Admin\AppData\Local\MP4 Downloader 1.33.7\mp4down32.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1976

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

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Downloads

\Users\Admin\AppData\Local\MP4 Downloader 1.33.7\mp4down32.exe

Filesize
2.4MB

MD5
e3cf9b054d10525eba19e38cca21fa86

SHA1
d1c93aedc6a8fa743ffe0748ec25b05aef6b5e48

SHA256
6535b1f3cddf555ad2a2e264283a14867edd87daca8f27102d6be3f27697d6de

SHA512
8a19c97bf496a9ede1ac4a6213c06385389e7f8331009a59b4ec17476d933d39a77d6d3b5461e6066d1507c0360312dd1e2f3db3f81fa412703976c7506b4155

Download Submit
\Users\Admin\AppData\Local\Temp\is-51DN2.tmp\4adc92b37c0c96e79518828354070127f2077810ed7abd64bf24018e315b262b.tmp

Filesize
688KB

MD5
a90caeef968f0d7ea2b6f64a3bf06319

SHA1
4a1d604e576010465e3eb0501bec4321817ad810

SHA256
98b983e37a0268b2a2528a08a4640962fa7cbd4b3512d9fd196daa73d5ae6e8a

SHA512
2e3bb9224389e2eba278af0d723097affb63253f50cbb1efc75feee88b619a790edfd6fb8e712b6e4769cb14e8e3287c9ec324701e86539fd29eb31c4795b017

Download Submit
\Users\Admin\AppData\Local\Temp\is-H0MA4.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-H0MA4.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1976-203-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-180-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-209-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-222-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-170-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-171-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-219-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-206-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-177-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-212-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-183-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-186-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-189-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-192-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-193-0x0000000002880000-0x0000000002922000-memory.dmp

Filesize
648KB

Download
memory/1976-199-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/1976-215-0x0000000000400000-0x0000000000664000-memory.dmp

Filesize
2.4MB

Download
memory/2088-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/2088-175-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3028-174-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3028-202-0x0000000003A40000-0x0000000003CA4000-memory.dmp

Filesize
2.4MB

Download
memory/3028-11-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3028-169-0x0000000003A40000-0x0000000003CA4000-memory.dmp

Filesize
2.4MB

Download

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