Malware Analysis Report

2025-06-15 20:41

Sample ID 240508-w1jsasgh8w
Target main.exe
SHA256 736e3d6e2e7e2311415668432aa9b8631040824eefa92f88bff7853c268ff3e7
Tags
pyinstaller
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

736e3d6e2e7e2311415668432aa9b8631040824eefa92f88bff7853c268ff3e7

Threat Level: Shows suspicious behavior

The file main.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

pyinstaller

Loads dropped DLL

Unsigned PE

Detects Pyinstaller

Modifies registry class

Opens file in notepad (likely ransom note)

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-08 18:23

Signatures

Detects Pyinstaller

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 18:23

Reported

2024-05-08 18:25

Platform

win10v2004-20240426-en

Max time kernel

102s

Max time network

104s

Command Line

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

Signatures

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A
Key created \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A

Opens file in notepad (likely ransom note)

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\System32\notepad.exe N/A
N/A N/A C:\Windows\System32\Notepad.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A
N/A N/A C:\Windows\system32\OpenWith.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2856 wrote to memory of 3416 N/A C:\Users\Admin\AppData\Local\Temp\main.exe C:\Users\Admin\AppData\Local\Temp\main.exe
PID 2856 wrote to memory of 3416 N/A C:\Users\Admin\AppData\Local\Temp\main.exe C:\Users\Admin\AppData\Local\Temp\main.exe

Processes

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

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

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

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

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\Desktop\ConfirmConvertTo.bat" "

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

C:\Windows\System32\notepad.exe

"C:\Windows\System32\notepad.exe" "C:\Users\Admin\Desktop\RestartSwitch.ps1"

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Downloads\UnlockPush.vbs"

C:\Windows\System32\Notepad.exe

"C:\Windows\System32\Notepad.exe" C:\Users\Admin\Downloads\UnlockPush.vbs

Network

Country Destination Domain Proto
US 8.8.8.8:53 api6.ipify.org udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp
NL 23.62.61.139:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.139:443 www.bing.com tcp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 139.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 24.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.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

Files

C:\Users\Admin\AppData\Local\Temp\_MEI28562\python312.dll

MD5 3c388ce47c0d9117d2a50b3fa5ac981d
SHA1 038484ff7460d03d1d36c23f0de4874cbaea2c48
SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
SHA512 e529c5c1c028be01e44a156cd0e7cad0a24b5f91e5d34697fafc395b63e37780dc0fac8f4c5d075ad8fe4bd15d62a250b818ff3d4ead1e281530a4c7e3ce6d35

C:\Users\Admin\AppData\Local\Temp\_MEI28562\VCRUNTIME140.dll

MD5 be8dbe2dc77ebe7f88f910c61aec691a
SHA1 a19f08bb2b1c1de5bb61daf9f2304531321e0e40
SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
SHA512 0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

C:\Users\Admin\AppData\Local\Temp\_MEI28562\base_library.zip

MD5 8dad91add129dca41dd17a332a64d593
SHA1 70a4ec5a17ed63caf2407bd76dc116aca7765c0d
SHA256 8de4f013bfecb9431aabaa97bb084fb7de127b365b9478d6f7610959bf0d2783
SHA512 2163414bc01fc30d47d1de763a8332afe96ea7b296665b1a0840d5197b7e56f4963938e69de35cd2bf89158e5e2240a1650d00d86634ac2a5e2ad825455a2d50

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_lzma.pyd

MD5 05e8b2c429aff98b3ae6adc842fb56a3
SHA1 834ddbced68db4fe17c283ab63b2faa2e4163824
SHA256 a6e2a5bb7a33ad9054f178786a031a46ea560faeef1fb96259331500aae9154c
SHA512 badeb99795b89bc7c1f0c36becc7a0b2ce99ecfd6f6bb493bda24b8e57e6712e23f4c509c96a28bc05200910beddc9f1536416bbc922331cae698e813cbb50b3

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_ssl.pyd

MD5 5b9b3f978d07e5a9d701f832463fc29d
SHA1 0fcd7342772ad0797c9cb891bf17e6a10c2b155b
SHA256 d568b3c99bf0fc35a1f3c5f66b4a9d3b67e23a1d3cf0a4d30499d924d805f5aa
SHA512 e4db56c8e0e9ba0db7004463bf30364a4e4ab0b545fb09f40d2dba67b79b6b1c1db07df1f017501e074abd454d1e37a4167f29e7bbb0d4f8958fa0a2e9f4e405

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_socket.pyd

MD5 dc06f8d5508be059eae9e29d5ba7e9ec
SHA1 d666c88979075d3b0c6fd3be7c595e83e0cb4e82
SHA256 7daff6aa3851a913ed97995702a5dfb8a27cb7cf00fb496597be777228d7564a
SHA512 57eb36bc1e9be20c85c34b0a535b2349cb13405d60e752016e23603c4648939f1150e4dbebc01ec7b43eb1a6947c182ccb8a806e7e72167ad2e9d98d1fd94ab3

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_queue.pyd

MD5 6e0cb85dc94e351474d7625f63e49b22
SHA1 66737402f76862eb2278e822b94e0d12dcb063c5
SHA256 3f57f29abd86d4dc8f4ca6c3f190ebb57d429143d98f0636ff5117e08ed81f9b
SHA512 1984b2fc7f9bbdf5ba66716fc60dcfd237f38e2680f2fc61f141ff7e865c0dbdd7cdc47b3bc490b426c6cfe9f3f9e340963abf428ea79eb794b0be7d13001f6a

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_hashlib.pyd

MD5 eedb6d834d96a3dffffb1f65b5f7e5be
SHA1 ed6735cfdd0d1ec21c7568a9923eb377e54b308d
SHA256 79c4cde23397b9a35b54a3c2298b3c7a844454f4387cb0693f15e4facd227dd2
SHA512 527bd7bb2f4031416762595f4ce24cbc6254a50eaf2cc160b930950c4f2b3f5e245a486972148c535f8cd80c78ec6fa8c9a062085d60db8f23d4b21e8ae4c0ad

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_decimal.pyd

MD5 3055edf761508190b576e9bf904003aa
SHA1 f0dc8d882b5cd7955cc6dfc8f9834f70a83c7890
SHA256 e4104e47399d3f635a14d649f61250e9fd37f7e65c81ffe11f099923f8532577
SHA512 87538fe20bd2c1150a8fefd0478ffd32e2a9c59d22290464bf5dfb917f6ac7ec874f8b1c70d643a4dc3dd32cbe17e7ea40c0be3ea9dd07039d94ab316f752248

C:\Users\Admin\AppData\Local\Temp\_MEI28562\_bz2.pyd

MD5 223fd6748cae86e8c2d5618085c768ac
SHA1 dcb589f2265728fe97156814cbe6ff3303cd05d3
SHA256 f81dc49eac5ecc528e628175add2ff6bda695a93ea76671d7187155aa6326abb
SHA512 9c22c178417b82e68f71e5b7fe7c0c0a77184ee12bd0dc049373eace7fa66c89458164d124a9167ae760ff9d384b78ca91001e5c151a51ad80c824066b8ecce6

C:\Users\Admin\AppData\Local\Temp\_MEI28562\unicodedata.pyd

MD5 16be9a6f941f1a2cb6b5fca766309b2c
SHA1 17b23ae0e6a11d5b8159c748073e36a936f3316a
SHA256 10ffd5207eeff5a836b330b237d766365d746c30e01abf0fd01f78548d1f1b04
SHA512 64b7ecc58ae7cf128f03a0d5d5428aaa0d4ad4ae7e7d19be0ea819bbbf99503836bfe4946df8ee3ab8a92331fdd002ab9a9de5146af3e86fef789ce46810796b

C:\Users\Admin\AppData\Local\Temp\_MEI28562\select.pyd

MD5 92b440ca45447ec33e884752e4c65b07
SHA1 5477e21bb511cc33c988140521a4f8c11a427bcc
SHA256 680df34fb908c49410ac5f68a8c05d92858acd111e62d1194d15bdce520bd6c3
SHA512 40e60e1d1445592c5e8eb352a4052db28b1739a29e16b884b0ba15917b058e66196988214ce473ba158704837b101a13195d5e48cb1dc2f07262dfecfe8d8191

C:\Users\Admin\AppData\Local\Temp\_MEI28562\libssl-3.dll

MD5 19a2aba25456181d5fb572d88ac0e73e
SHA1 656ca8cdfc9c3a6379536e2027e93408851483db
SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
SHA512 df17dc8a882363a6c5a1b78ba3cf448437d1118ccc4a6275cc7681551b13c1a4e0f94e30ffb94c3530b688b62bff1c03e57c2c185a7df2bf3e5737a06e114337

C:\Users\Admin\AppData\Local\Temp\_MEI28562\libcrypto-3.dll

MD5 e547cf6d296a88f5b1c352c116df7c0c
SHA1 cafa14e0367f7c13ad140fd556f10f320a039783
SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
SHA512 9f42edf04c7af350a00fa4fdf92b8e2e6f47ab9d2d41491985b20cd0adde4f694253399f6a88f4bdd765c4f49792f25fb01e84ec03fd5d0be8bb61773d77d74d

C:\Users\Admin\AppData\Local\Temp\_MEI28562\charset_normalizer\md__mypyc.cp312-win_amd64.pyd

MD5 bf9a9da1cf3c98346002648c3eae6dcf
SHA1 db16c09fdc1722631a7a9c465bfe173d94eb5d8b
SHA256 4107b1d6f11d842074a9f21323290bbe97e8eed4aa778fbc348ee09cc4fa4637
SHA512 7371407d12e632fc8fb031393838d36e6a1fe1e978ced36ff750d84e183cde6dd20f75074f4597742c9f8d6f87af12794c589d596a81b920c6c62ee2ba2e5654

C:\Users\Admin\AppData\Local\Temp\_MEI28562\certifi\cacert.pem

MD5 d3e74c9d33719c8ab162baa4ae743b27
SHA1 ee32f2ccd4bc56ca68441a02bf33e32dc6205c2b
SHA256 7a347ca8fef6e29f82b6e4785355a6635c17fa755e0940f65f15aa8fc7bd7f92
SHA512 e0fb35d6901a6debbf48a0655e2aa1040700eb5166e732ae2617e89ef5e6869e8ddd5c7875fa83f31d447d4abc3db14bffd29600c9af725d9b03f03363469b4c

C:\Users\Admin\AppData\Local\Temp\_MEI28562\charset_normalizer\md.cp312-win_amd64.pyd

MD5 d9e0217a89d9b9d1d778f7e197e0c191
SHA1 ec692661fcc0b89e0c3bde1773a6168d285b4f0d
SHA256 ecf12e2c0a00c0ed4e2343ea956d78eed55e5a36ba49773633b2dfe7b04335c0
SHA512 3b788ac88c1f2d682c1721c61d223a529697c7e43280686b914467b3b39e7d6debaff4c0e2f42e9dddb28b522f37cb5a3011e91c66d911609c63509f9228133d