Malware Analysis Report

2025-05-05 21:25

Sample ID 240521-1x9a1abg87
Target mesh nuller.exe
SHA256 821a78ea5b9f69675c81aa4fc364735c993c411de8901d7a0c4cb99d3521d913
Tags
pyinstaller
score
7/10

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 Overview

score
7/10

SHA256

821a78ea5b9f69675c81aa4fc364735c993c411de8901d7a0c4cb99d3521d913

Threat Level: Shows suspicious behavior

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

Malicious Activity Summary

pyinstaller

Executes dropped EXE

Loads dropped DLL

Legitimate hosting services abused for malware hosting/C2

Drops file in Program Files directory

Detects Pyinstaller

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-21 22:02

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

2024-05-21 22:02

Reported

2024-05-21 22:04

Platform

win10v2004-20240508-en

Max time kernel

15s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files\UEHS2928!!@#$\FNOffsetGrabber.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A
N/A raw.githubusercontent.com N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\UEHS2928!!@#$\FNOffsetGrabber.exe C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe N/A
File created C:\Program Files\UEHS2928!!@#$\oo2core_9_win64.dll C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe

"C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe"

C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe

"C:\Users\Admin\AppData\Local\Temp\mesh nuller.exe"

C:\Program Files\UEHS2928!!@#$\FNOffsetGrabber.exe

"C:\Program Files\UEHS2928!!@#$\FNOffsetGrabber.exe"

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 --field-trial-handle=3416,i,13879737908471496610,15335851594401413307,262144 --variations-seed-version --mojo-platform-channel-handle=4312 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 github.com udp
GB 20.26.156.215:443 github.com tcp
US 8.8.8.8:53 215.156.26.20.in-addr.arpa udp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.110.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
NL 23.62.61.104:443 www.bing.com tcp
GB 20.26.156.215:443 github.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 133.110.199.185.in-addr.arpa udp
US 8.8.8.8:53 104.61.62.23.in-addr.arpa udp
US 185.199.110.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\_MEI21322\python312.dll

MD5 3c388ce47c0d9117d2a50b3fa5ac981d
SHA1 038484ff7460d03d1d36c23f0de4874cbaea2c48
SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
SHA512 e529c5c1c028be01e44a156cd0e7cad0a24b5f91e5d34697fafc395b63e37780dc0fac8f4c5d075ad8fe4bd15d62a250b818ff3d4ead1e281530a4c7e3ce6d35

C:\Users\Admin\AppData\Local\Temp\_MEI21322\VCRUNTIME140.dll

MD5 be8dbe2dc77ebe7f88f910c61aec691a
SHA1 a19f08bb2b1c1de5bb61daf9f2304531321e0e40
SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
SHA512 0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

C:\Users\Admin\AppData\Local\Temp\_MEI21322\unicodedata.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_socket.pyd

MD5 dc06f8d5508be059eae9e29d5ba7e9ec
SHA1 d666c88979075d3b0c6fd3be7c595e83e0cb4e82
SHA256 7daff6aa3851a913ed97995702a5dfb8a27cb7cf00fb496597be777228d7564a
SHA512 57eb36bc1e9be20c85c34b0a535b2349cb13405d60e752016e23603c4648939f1150e4dbebc01ec7b43eb1a6947c182ccb8a806e7e72167ad2e9d98d1fd94ab3

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_ssl.pyd

MD5 5b9b3f978d07e5a9d701f832463fc29d
SHA1 0fcd7342772ad0797c9cb891bf17e6a10c2b155b
SHA256 d568b3c99bf0fc35a1f3c5f66b4a9d3b67e23a1d3cf0a4d30499d924d805f5aa
SHA512 e4db56c8e0e9ba0db7004463bf30364a4e4ab0b545fb09f40d2dba67b79b6b1c1db07df1f017501e074abd454d1e37a4167f29e7bbb0d4f8958fa0a2e9f4e405

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_lzma.pyd

MD5 05e8b2c429aff98b3ae6adc842fb56a3
SHA1 834ddbced68db4fe17c283ab63b2faa2e4163824
SHA256 a6e2a5bb7a33ad9054f178786a031a46ea560faeef1fb96259331500aae9154c
SHA512 badeb99795b89bc7c1f0c36becc7a0b2ce99ecfd6f6bb493bda24b8e57e6712e23f4c509c96a28bc05200910beddc9f1536416bbc922331cae698e813cbb50b3

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_queue.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_hashlib.pyd

MD5 eedb6d834d96a3dffffb1f65b5f7e5be
SHA1 ed6735cfdd0d1ec21c7568a9923eb377e54b308d
SHA256 79c4cde23397b9a35b54a3c2298b3c7a844454f4387cb0693f15e4facd227dd2
SHA512 527bd7bb2f4031416762595f4ce24cbc6254a50eaf2cc160b930950c4f2b3f5e245a486972148c535f8cd80c78ec6fa8c9a062085d60db8f23d4b21e8ae4c0ad

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_decimal.pyd

MD5 3055edf761508190b576e9bf904003aa
SHA1 f0dc8d882b5cd7955cc6dfc8f9834f70a83c7890
SHA256 e4104e47399d3f635a14d649f61250e9fd37f7e65c81ffe11f099923f8532577
SHA512 87538fe20bd2c1150a8fefd0478ffd32e2a9c59d22290464bf5dfb917f6ac7ec874f8b1c70d643a4dc3dd32cbe17e7ea40c0be3ea9dd07039d94ab316f752248

C:\Users\Admin\AppData\Local\Temp\_MEI21322\_bz2.pyd

MD5 223fd6748cae86e8c2d5618085c768ac
SHA1 dcb589f2265728fe97156814cbe6ff3303cd05d3
SHA256 f81dc49eac5ecc528e628175add2ff6bda695a93ea76671d7187155aa6326abb
SHA512 9c22c178417b82e68f71e5b7fe7c0c0a77184ee12bd0dc049373eace7fa66c89458164d124a9167ae760ff9d384b78ca91001e5c151a51ad80c824066b8ecce6

C:\Users\Admin\AppData\Local\Temp\_MEI21322\select.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI21322\libssl-3.dll

MD5 19a2aba25456181d5fb572d88ac0e73e
SHA1 656ca8cdfc9c3a6379536e2027e93408851483db
SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
SHA512 df17dc8a882363a6c5a1b78ba3cf448437d1118ccc4a6275cc7681551b13c1a4e0f94e30ffb94c3530b688b62bff1c03e57c2c185a7df2bf3e5737a06e114337

C:\Users\Admin\AppData\Local\Temp\_MEI21322\libcrypto-3.dll

MD5 e547cf6d296a88f5b1c352c116df7c0c
SHA1 cafa14e0367f7c13ad140fd556f10f320a039783
SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
SHA512 9f42edf04c7af350a00fa4fdf92b8e2e6f47ab9d2d41491985b20cd0adde4f694253399f6a88f4bdd765c4f49792f25fb01e84ec03fd5d0be8bb61773d77d74d

C:\Users\Admin\AppData\Local\Temp\_MEI21322\base_library.zip

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

C:\Users\Admin\AppData\Local\Temp\_MEI21322\charset_normalizer\md__mypyc.cp312-win_amd64.pyd

MD5 bf9a9da1cf3c98346002648c3eae6dcf
SHA1 db16c09fdc1722631a7a9c465bfe173d94eb5d8b
SHA256 4107b1d6f11d842074a9f21323290bbe97e8eed4aa778fbc348ee09cc4fa4637
SHA512 7371407d12e632fc8fb031393838d36e6a1fe1e978ced36ff750d84e183cde6dd20f75074f4597742c9f8d6f87af12794c589d596a81b920c6c62ee2ba2e5654

C:\Users\Admin\AppData\Local\Temp\_MEI21322\charset_normalizer\md.cp312-win_amd64.pyd

MD5 d9e0217a89d9b9d1d778f7e197e0c191
SHA1 ec692661fcc0b89e0c3bde1773a6168d285b4f0d
SHA256 ecf12e2c0a00c0ed4e2343ea956d78eed55e5a36ba49773633b2dfe7b04335c0
SHA512 3b788ac88c1f2d682c1721c61d223a529697c7e43280686b914467b3b39e7d6debaff4c0e2f42e9dddb28b522f37cb5a3011e91c66d911609c63509f9228133d

C:\Users\Admin\AppData\Local\Temp\_MEI21322\certifi\cacert.pem

MD5 d3e74c9d33719c8ab162baa4ae743b27
SHA1 ee32f2ccd4bc56ca68441a02bf33e32dc6205c2b
SHA256 7a347ca8fef6e29f82b6e4785355a6635c17fa755e0940f65f15aa8fc7bd7f92
SHA512 e0fb35d6901a6debbf48a0655e2aa1040700eb5166e732ae2617e89ef5e6869e8ddd5c7875fa83f31d447d4abc3db14bffd29600c9af725d9b03f03363469b4c

C:\Program Files\UEHS2928!!@#$\FNOffsetGrabber.exe

MD5 7ec9c96850bb2dcbf7c91bae180290b9
SHA1 d0deb56d65d48c6220e67b072038926879fc3e27
SHA256 d6f2d834e732daedd61b214641031cbcf7a34ca564dc2f2568503cece4cf5e4e
SHA512 474388bc1785aedf0a92d4b5a980156290ac765b7c097d36d8c2993c8e3b82f75a4e6a7e5f4a175f5228776bc83c467faead103abc4b88227e2bff320de08844

memory/2592-55-0x00007FF840EFB000-0x00007FF840EFC000-memory.dmp