Malware Analysis Report

2025-08-10 11:56

Sample ID 240323-rny91abb51
Target 4b9151a0fcc00b7ebe774bb2489bc530.exe
SHA256 45d3e2a90ffe10319fe19d04af1fbe783101c3be4841710e506ac84d0e882d07
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

45d3e2a90ffe10319fe19d04af1fbe783101c3be4841710e506ac84d0e882d07

Threat Level: Known bad

The file 4b9151a0fcc00b7ebe774bb2489bc530.exe was found to be: Known bad.

Malicious Activity Summary

socks5systemz botnet discovery

Detect Socks5Systemz Payload

Socks5Systemz

Executes dropped EXE

Loads dropped DLL

Unexpected DNS network traffic destination

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-23 14:21

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-23 14:21

Reported

2024-03-23 14:23

Platform

win7-20240221-en

Max time kernel

145s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.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
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 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2180 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 2724 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 2724 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe

"C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe"

C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp

"C:\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp" /SL5="$4010A,1966609,54272,C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.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 buadasg.com udp
MD 45.142.214.240:80 buadasg.com tcp
FR 195.154.173.35:2023 tcp

Files

memory/2180-0-0x0000000000400000-0x0000000000414000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-V1EP5.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp

MD5 d394fc26de69f06950dc1c71959b0261
SHA1 7c9448fc3582f19763eaa8e3c5383b7873aee017
SHA256 405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a
SHA512 63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

\Users\Admin\AppData\Local\Temp\is-KL96J.tmp\_isetup\_shfoldr.dll

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

\Users\Admin\AppData\Local\Temp\is-KL96J.tmp\_isetup\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/2724-11-0x00000000001D0000-0x00000000001D1000-memory.dmp

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

MD5 0341a71415d5c43879d5941ca65396ba
SHA1 8526a5a86e7d11b73633e27629351087079d2291
SHA256 fe804d96f2cf809d1e13b9df072c5ee2b44fe71164a845d3cea4041d428203ee
SHA512 6498e788438dcbf334176011bbf1a12bd98542552b12af56f2b4a8fc385247e1a1f052dba26211fc72ec1357125d6d800638946c427cc1dcd853353ec7d70f0e

memory/2724-41-0x00000000036F0000-0x0000000003932000-memory.dmp

memory/2504-43-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2504-44-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2504-48-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2504-47-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-51-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2180-52-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2724-53-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/2652-54-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2724-55-0x00000000001D0000-0x00000000001D1000-memory.dmp

memory/2724-56-0x00000000036F0000-0x0000000003932000-memory.dmp

memory/2652-59-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-60-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-63-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-66-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-69-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-72-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-74-0x0000000002650000-0x00000000026F2000-memory.dmp

memory/2652-80-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-83-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-84-0x0000000002650000-0x00000000026F2000-memory.dmp

memory/2652-87-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-90-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-93-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-96-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-97-0x0000000002650000-0x00000000026F2000-memory.dmp

memory/2652-98-0x0000000002650000-0x00000000026F2000-memory.dmp

memory/2652-102-0x0000000000400000-0x0000000000642000-memory.dmp

memory/2652-105-0x0000000000400000-0x0000000000642000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-23 14:21

Reported

2024-03-23 14:23

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.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 5404 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 5404 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 5404 wrote to memory of 5036 N/A C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp
PID 5036 wrote to memory of 5600 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 5036 wrote to memory of 5600 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 5036 wrote to memory of 5600 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 5036 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 5036 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe
PID 5036 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe

"C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.exe"

C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp

"C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp" /SL5="$A0116,1966609,54272,C:\Users\Admin\AppData\Local\Temp\4b9151a0fcc00b7ebe774bb2489bc530.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=3996 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 210.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
GB 142.250.187.202:443 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 200.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp
LT 91.211.247.248:53 ddufggj.info udp
US 8.8.8.8:53 248.247.211.91.in-addr.arpa udp
TR 195.16.74.230:80 ddufggj.info tcp
US 8.8.8.8:53 230.74.16.195.in-addr.arpa udp

Files

memory/5404-0-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5404-2-0x0000000000400000-0x0000000000414000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\is-A7NDN.tmp\4b9151a0fcc00b7ebe774bb2489bc530.tmp

MD5 d394fc26de69f06950dc1c71959b0261
SHA1 7c9448fc3582f19763eaa8e3c5383b7873aee017
SHA256 405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a
SHA512 63ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10

memory/5036-7-0x0000000000660000-0x0000000000661000-memory.dmp

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

MD5 8394350b7547ee4760de84e7a5eea444
SHA1 d51469cdcfcaef3a7b5430a5a100c3ec6342d3d7
SHA256 0bccbc687369a0731a3a04702d2368b8799854f63de4ca09968c6ea6caa6c75c
SHA512 502d368f75922408459f45b3d83943d7b9a4f6154e4cc2ca8a156df0959e354cfebc6e9aefefbbae7f5b7d1c360b7093f08b1974841e33eb67b4a4a3f49427a7

memory/5600-38-0x0000000000400000-0x0000000000642000-memory.dmp

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

MD5 841ca5703ed222fdf25141010366384f
SHA1 7e03c93e0cb992925a8e01aec43ac564097073b1
SHA256 87fd129f43fea17b466c0801bb9df22a4ffc7615ea6aa41ac84fb7858c90a4e9
SHA512 7e6f6d07b7512c64bfd37cd76000715ce9307a90bc7f6934fd9b7b0f0a069463f2e65a87d3409b1a1b7a6153c5c181abf16c0fb213f4bce496328387737fc12d

memory/5600-42-0x0000000000400000-0x0000000000642000-memory.dmp

memory/5600-39-0x0000000000400000-0x0000000000642000-memory.dmp

memory/5600-43-0x0000000000400000-0x0000000000642000-memory.dmp

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

MD5 283bc25f5dde274949fc2a546687341f
SHA1 af5a43f8ec681069ac8a06e99c08ed7d2e431a56
SHA256 8fcee31de7e6bae57b2969487865c0257bc436434a66b9cc7d23d0360824a322
SHA512 3866cceb939f830407c6e3b3957b852f29a799a16755430cb4b931a3c7c96d79e2e028eae8439a53a0e1bc5f9eff838218f121015f4ac6f1947188b9a8bd2cd5

memory/1084-45-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-47-0x0000000000400000-0x0000000000642000-memory.dmp

memory/5404-48-0x0000000000400000-0x0000000000414000-memory.dmp

memory/5036-49-0x0000000000400000-0x00000000004B8000-memory.dmp

memory/1084-51-0x0000000000400000-0x0000000000642000-memory.dmp

memory/5036-52-0x0000000000660000-0x0000000000661000-memory.dmp

memory/1084-55-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-56-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-59-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-62-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-64-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-68-0x0000000000790000-0x0000000000832000-memory.dmp

memory/1084-69-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-70-0x0000000000790000-0x0000000000832000-memory.dmp

memory/1084-75-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-79-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-81-0x0000000000790000-0x0000000000832000-memory.dmp

memory/1084-83-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-86-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-88-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-92-0x0000000000400000-0x0000000000642000-memory.dmp

memory/1084-96-0x0000000000400000-0x0000000000642000-memory.dmp