Malware Analysis Report

2025-08-10 11:56

Sample ID 240323-tf7mhshd42
Target a43170914d691e584583b0e1023f7d29.exe
SHA256 25d5acd334f0d498f7cfef39cfb04259b6f1c0bc066b39bb4f1da85a4a4388c3
Tags
socks5systemz botnet discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

25d5acd334f0d498f7cfef39cfb04259b6f1c0bc066b39bb4f1da85a4a4388c3

Threat Level: Known bad

The file a43170914d691e584583b0e1023f7d29.exe was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Unexpected DNS network traffic destination

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-23 16:01

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-23 16:01

Reported

2024-03-23 16:03

Platform

win7-20240221-en

Max time kernel

145s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 45.155.250.90 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2280 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 2992 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2992 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe

"C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp

"C:\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp" /SL5="$30130,1970008,54272,C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s

Network

Country Destination Domain Proto
SE 45.155.250.90:53 ejpopbc.ua udp
MD 45.142.214.240:80 ejpopbc.ua tcp

Files

memory/2280-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2280-2-0x0000000000400000-0x0000000000414000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-HERD8.tmp\a43170914d691e584583b0e1023f7d29.tmp

MD5 d394fc26de69f06950dc1c71959b0261
SHA1 7c9448fc3582f19763eaa8e3c5383b7873aee017
SHA256 405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a
SHA512 63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

\Users\Admin\AppData\Local\Temp\is-NSDMS.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/2992-12-0x00000000001D0000-0x00000000001D1000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-NSDMS.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

MD5 efdc89c9ca51e15428ec69cb3d31aad8
SHA1 6f6efe09bf896d13b2c35e1730548cca4445570e
SHA256 8e525ff56f95b6f8b013a26f95cfdf9f82e7d4370b720b03c1dd04eebeb90a34
SHA512 a70cc5f2a7798e62e96538aa1daa9f5ef0f98a86b56bbc9567ca9b4a2126667228565ee0f497182a7773ae69262ff37afca4bc6703a105e9a025118c29edfc3c

\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

MD5 306d0b4352c70e69e60ee2fa1be419ad
SHA1 d9ac57670c1091350b6d1293f73491e39a5a4455
SHA256 2a29e3edc8bb4997787730b83f87513f9c8a929724c1c25837682a4c3a55d840
SHA512 3f11bfde980bf56260c78886f0db125d7c8c68957ff9aac40af9a42004405dd2013a67072150fe2a985b4ae1190a6b54460ec962eb07ddaccad97faa28fe2b45

memory/2624-44-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2992-43-0x00000000036C0000-0x0000000003901000-memory.dmp

memory/2624-45-0x0000000000400000-0x0000000000641000-memory.dmp

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

MD5 ca07d355c80b303ac9edbf3d9b5492f3
SHA1 f09e8e52c3bb53e20f1623321ef2e0da693ebe85
SHA256 d144face050d52cf3beba96a24ff6bc79f01a621ee19801dbea49079fee42da8
SHA512 8961bc69e102623303d9cd943b9f2df32d8597958a0e3e51a41a84421de1c8037fd9a5e32f86a429f4ec551fcdd9a9b8d1b034a2644d3031abf8b1b5c9e5efdc

memory/2624-48-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2624-49-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-51-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-53-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2280-54-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2992-55-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/2960-56-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2992-57-0x00000000001D0000-0x00000000001D1000-memory.dmp

memory/2992-58-0x00000000036C0000-0x0000000003901000-memory.dmp

memory/2960-61-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-62-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-65-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-68-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-71-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-74-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-75-0x00000000022E0000-0x0000000002382000-memory.dmp

memory/2960-77-0x00000000022E0000-0x0000000002382000-memory.dmp

memory/2960-82-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-85-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-86-0x00000000022E0000-0x0000000002382000-memory.dmp

memory/2960-89-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-92-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-95-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-98-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-102-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2960-105-0x0000000000400000-0x0000000000641000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-23 16:01

Reported

2024-03-23 16:03

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

Signatures

Detect Socks5Systemz Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Socks5Systemz

botnet socks5systemz

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp N/A

Unexpected DNS network traffic destination

Description Indicator Process Target
Destination IP 91.211.247.248 N/A N/A

Checks installed software on the system

discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 456 wrote to memory of 4816 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 456 wrote to memory of 4816 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 456 wrote to memory of 4816 N/A C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp
PID 4816 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 4816 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 4816 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 4816 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 4816 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 4816 wrote to memory of 3392 N/A C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe

"C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp

"C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp" /SL5="$501D2,1970008,54272,C:\Users\Admin\AppData\Local\Temp\a43170914d691e584583b0e1023f7d29.exe"

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4584 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 44.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
NL 172.217.23.202:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 202.23.217.172.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 81.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
LT 91.211.247.248:53 bfxkvgm.com udp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp
TR 195.16.74.230:80 bfxkvgm.com tcp
US 8.8.8.8:53 230.74.16.195.in-addr.arpa udp

Files

memory/456-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/456-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-9A0LE.tmp\a43170914d691e584583b0e1023f7d29.tmp

MD5 d394fc26de69f06950dc1c71959b0261
SHA1 7c9448fc3582f19763eaa8e3c5383b7873aee017
SHA256 405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a
SHA512 63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

memory/4816-7-0x0000000002240000-0x0000000002241000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-3V7SE.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/456-17-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

MD5 ca07d355c80b303ac9edbf3d9b5492f3
SHA1 f09e8e52c3bb53e20f1623321ef2e0da693ebe85
SHA256 d144face050d52cf3beba96a24ff6bc79f01a621ee19801dbea49079fee42da8
SHA512 8961bc69e102623303d9cd943b9f2df32d8597958a0e3e51a41a84421de1c8037fd9a5e32f86a429f4ec551fcdd9a9b8d1b034a2644d3031abf8b1b5c9e5efdc

memory/2324-39-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2324-40-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2324-43-0x0000000000400000-0x0000000000641000-memory.dmp

memory/2324-44-0x0000000000400000-0x0000000000641000-memory.dmp

C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

MD5 511482177f3a6d0a0b00589a703f3496
SHA1 8c697322ae4428e7eb5f576eb1fc7f8632e94658
SHA256 33b715a17806b790fadce6dca4c85a0421031e6e4aa19ee671d71c8e4ea2444f
SHA512 dd25ec70b745d7850dd0e262e5e684ea8e3e818d042793cb9944fbc13c56ced0863793461189fa2e4753144bd657ab42cfd2511b039c967e409d344a6a09929d

memory/3392-47-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-48-0x0000000000400000-0x0000000000641000-memory.dmp

memory/4816-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/3392-51-0x0000000000400000-0x0000000000641000-memory.dmp

memory/4816-52-0x0000000002240000-0x0000000002241000-memory.dmp

memory/3392-55-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-56-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-59-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-62-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-65-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-68-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-69-0x0000000000830000-0x00000000008D2000-memory.dmp

memory/3392-75-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-78-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-80-0x0000000000830000-0x00000000008D2000-memory.dmp

memory/3392-82-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-85-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-88-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-91-0x0000000000400000-0x0000000000641000-memory.dmp

memory/3392-96-0x0000000000400000-0x0000000000641000-memory.dmp