Malware Analysis Report

2025-06-15 20:41

Sample ID 240509-fm4bsaeh25
Target Nova_Decompiler.zip
SHA256 0e2459f8b8d9208351f1a1e240e7e2cee41cca27d0834acc3294e9ab3d74febb
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

0e2459f8b8d9208351f1a1e240e7e2cee41cca27d0834acc3294e9ab3d74febb

Threat Level: Shows suspicious behavior

The file Nova_Decompiler.zip was found to be: Shows suspicious behavior.

Malicious Activity Summary

pyinstaller

Loads dropped DLL

Detects Pyinstaller

Unsigned PE

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-09 05:00

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

2024-05-09 05:00

Reported

2024-05-09 05:03

Platform

win7-20240508-en

Max time kernel

122s

Max time network

124s

Command Line

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

Signatures

Processes

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

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

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

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

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\_MEI19562\python312.dll

MD5 3c388ce47c0d9117d2a50b3fa5ac981d
SHA1 038484ff7460d03d1d36c23f0de4874cbaea2c48
SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
SHA512 e529c5c1c028be01e44a156cd0e7cad0a24b5f91e5d34697fafc395b63e37780dc0fac8f4c5d075ad8fe4bd15d62a250b818ff3d4ead1e281530a4c7e3ce6d35

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 05:00

Reported

2024-05-09 05:03

Platform

win10v2004-20240508-en

Max time kernel

93s

Max time network

135s

Command Line

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

Signatures

Processes

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

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

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

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

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 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\_MEI5602\python312.dll

MD5 3c388ce47c0d9117d2a50b3fa5ac981d
SHA1 038484ff7460d03d1d36c23f0de4874cbaea2c48
SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
SHA512 e529c5c1c028be01e44a156cd0e7cad0a24b5f91e5d34697fafc395b63e37780dc0fac8f4c5d075ad8fe4bd15d62a250b818ff3d4ead1e281530a4c7e3ce6d35

C:\Users\Admin\AppData\Local\Temp\_MEI5602\VCRUNTIME140.dll

MD5 be8dbe2dc77ebe7f88f910c61aec691a
SHA1 a19f08bb2b1c1de5bb61daf9f2304531321e0e40
SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
SHA512 0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

C:\Users\Admin\AppData\Local\Temp\_MEI5602\base_library.zip

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

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_ctypes.pyd

MD5 bbd5533fc875a4a075097a7c6aba865e
SHA1 ab91e62c6d02d211a1c0683cb6c5b0bdd17cbf00
SHA256 be9828a877e412b48d75addc4553d2d2a60ae762a3551f9731b50cae7d65b570
SHA512 23ef351941f459dee7ed2cebbae21969e97b61c0d877cfe15e401c36369d2a2491ca886be789b1a0c5066d6a8835fd06db28b5b28fb6e9df84c2d0b0d8e9850e

C:\Users\Admin\AppData\Local\Temp\_MEI5602\python3.DLL

MD5 79b02450d6ca4852165036c8d4eaed1f
SHA1 ce9ff1b302426d4c94a2d3ea81531d3cb9e583e4
SHA256 d2e348e615a5d3b08b0bac29b91f79b32f0c1d0be48976450042462466b51123
SHA512 47044d18db3a4dd58a93b43034f4fafa66821d157dcfefb85fca2122795f4591dc69a82eb2e0ebd9183075184368850e4caf9c9fea0cfe6f766c73a60ffdf416

C:\Users\Admin\AppData\Local\Temp\_MEI5602\libffi-8.dll

MD5 0f8e4992ca92baaf54cc0b43aaccce21
SHA1 c7300975df267b1d6adcbac0ac93fd7b1ab49bd2
SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
SHA512 6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_wmi.pyd

MD5 7ec3fc12c75268972078b1c50c133e9b
SHA1 73f9cf237fe773178a997ad8ec6cd3ac0757c71e
SHA256 1a105311a5ed88a31472b141b4b6daa388a1cd359fe705d9a7a4aba793c5749f
SHA512 441f18e8ce07498bc65575e1ae86c1636e1ceb126af937e2547710131376be7b4cb0792403409a81b5c6d897b239f26ec9f36388069e324249778a052746795e

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_ssl.pyd

MD5 5b9b3f978d07e5a9d701f832463fc29d
SHA1 0fcd7342772ad0797c9cb891bf17e6a10c2b155b
SHA256 d568b3c99bf0fc35a1f3c5f66b4a9d3b67e23a1d3cf0a4d30499d924d805f5aa
SHA512 e4db56c8e0e9ba0db7004463bf30364a4e4ab0b545fb09f40d2dba67b79b6b1c1db07df1f017501e074abd454d1e37a4167f29e7bbb0d4f8958fa0a2e9f4e405

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_socket.pyd

MD5 dc06f8d5508be059eae9e29d5ba7e9ec
SHA1 d666c88979075d3b0c6fd3be7c595e83e0cb4e82
SHA256 7daff6aa3851a913ed97995702a5dfb8a27cb7cf00fb496597be777228d7564a
SHA512 57eb36bc1e9be20c85c34b0a535b2349cb13405d60e752016e23603c4648939f1150e4dbebc01ec7b43eb1a6947c182ccb8a806e7e72167ad2e9d98d1fd94ab3

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_queue.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_overlapped.pyd

MD5 ba368245d104b1e016d45e96a54dd9ce
SHA1 b79ef0eb9557a0c7fa78b11997de0bb057ab0c52
SHA256 67e6ca6f1645c6928ade6718db28aff1c49a192e8811732b5e99364991102615
SHA512 429d7a1f829be98c28e3dca5991edcadff17e91f050d50b608a52ef39f6f1c6b36ab71bfa8e3884167371a4e40348a8cda1a9492b125fb19d1a97c0ccb8f2c7b

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_multiprocessing.pyd

MD5 a4281e383ef82c482c8bda50504be04a
SHA1 4945a2998f9c9f8ce1c078395ffbedb29c715d5d
SHA256 467b0fef42d70b55abf41d817dff7631faeef84dce64f8aadb5690a22808d40c
SHA512 661e38b74f8bfdd14e48e65ee060da8ecdf67c0e3ca1b41b6b835339ab8259f55949c1f8685102fd950bf5de11a1b7c263da8a3a4b411f1f316376b8aa4a5683

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_lzma.pyd

MD5 05e8b2c429aff98b3ae6adc842fb56a3
SHA1 834ddbced68db4fe17c283ab63b2faa2e4163824
SHA256 a6e2a5bb7a33ad9054f178786a031a46ea560faeef1fb96259331500aae9154c
SHA512 badeb99795b89bc7c1f0c36becc7a0b2ce99ecfd6f6bb493bda24b8e57e6712e23f4c509c96a28bc05200910beddc9f1536416bbc922331cae698e813cbb50b3

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_hashlib.pyd

MD5 eedb6d834d96a3dffffb1f65b5f7e5be
SHA1 ed6735cfdd0d1ec21c7568a9923eb377e54b308d
SHA256 79c4cde23397b9a35b54a3c2298b3c7a844454f4387cb0693f15e4facd227dd2
SHA512 527bd7bb2f4031416762595f4ce24cbc6254a50eaf2cc160b930950c4f2b3f5e245a486972148c535f8cd80c78ec6fa8c9a062085d60db8f23d4b21e8ae4c0ad

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_decimal.pyd

MD5 3055edf761508190b576e9bf904003aa
SHA1 f0dc8d882b5cd7955cc6dfc8f9834f70a83c7890
SHA256 e4104e47399d3f635a14d649f61250e9fd37f7e65c81ffe11f099923f8532577
SHA512 87538fe20bd2c1150a8fefd0478ffd32e2a9c59d22290464bf5dfb917f6ac7ec874f8b1c70d643a4dc3dd32cbe17e7ea40c0be3ea9dd07039d94ab316f752248

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_cffi_backend.cp312-win_amd64.pyd

MD5 0572b13646141d0b1a5718e35549577c
SHA1 eeb40363c1f456c1c612d3c7e4923210eae4cdf7
SHA256 d8a76d1e31bbd62a482dea9115fc1a109cb39af4cf6d1323409175f3c93113a7
SHA512 67c28432ca8b389acc26e47eb8c4977fddd4af9214819f89df07fecbc8ed750d5f35807a1b195508dd1d77e2a7a9d7265049dcfbfe7665a7fd1ba45da1e4e842

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_bz2.pyd

MD5 223fd6748cae86e8c2d5618085c768ac
SHA1 dcb589f2265728fe97156814cbe6ff3303cd05d3
SHA256 f81dc49eac5ecc528e628175add2ff6bda695a93ea76671d7187155aa6326abb
SHA512 9c22c178417b82e68f71e5b7fe7c0c0a77184ee12bd0dc049373eace7fa66c89458164d124a9167ae760ff9d384b78ca91001e5c151a51ad80c824066b8ecce6

C:\Users\Admin\AppData\Local\Temp\_MEI5602\_asyncio.pyd

MD5 28d2a0405be6de3d168f28109030130c
SHA1 7151eccbd204b7503f34088a279d654cfe2260c9
SHA256 2dfcaec25de17be21f91456256219578eae9a7aec5d21385dec53d0840cf0b8d
SHA512 b87f406f2556fac713967e5ae24729e827f2112c318e73fe8ba28946fd6161802de629780fad7a3303cf3dbab7999b15b535f174c85b3cbb7bb3c67915f3b8d0

C:\Users\Admin\AppData\Local\Temp\_MEI5602\VCRUNTIME140_1.dll

MD5 f8dfa78045620cf8a732e67d1b1eb53d
SHA1 ff9a604d8c99405bfdbbf4295825d3fcbc792704
SHA256 a113f192195f245f17389e6ecbed8005990bcb2476ddad33f7c4c6c86327afe5
SHA512 ba7f8b7ab0deb7a7113124c28092b543e216ca08d1cf158d9f40a326fb69f4a2511a41a59ea8482a10c9ec4ec8ac69b70dfe9ca65e525097d93b819d498da371

C:\Users\Admin\AppData\Local\Temp\_MEI5602\unicodedata.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI5602\select.pyd

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

C:\Users\Admin\AppData\Local\Temp\_MEI5602\pyexpat.pyd

MD5 5e911ca0010d5c9dce50c58b703e0d80
SHA1 89be290bebab337417c41bab06f43effb4799671
SHA256 4779e19ee0f4f0be953805efa1174e127f6e91ad023bd33ac7127fef35e9087b
SHA512 e3f1db80748333f08f79f735a457246e015c10b353e1a52abe91ed9a69f7de5efa5f78a2ed209e97b16813cb74a87f8f0c63a5f44c8b59583851922f54a48cf5

C:\Users\Admin\AppData\Local\Temp\_MEI5602\libssl-3.dll

MD5 19a2aba25456181d5fb572d88ac0e73e
SHA1 656ca8cdfc9c3a6379536e2027e93408851483db
SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
SHA512 df17dc8a882363a6c5a1b78ba3cf448437d1118ccc4a6275cc7681551b13c1a4e0f94e30ffb94c3530b688b62bff1c03e57c2c185a7df2bf3e5737a06e114337

C:\Users\Admin\AppData\Local\Temp\_MEI5602\libcrypto-3.dll

MD5 e547cf6d296a88f5b1c352c116df7c0c
SHA1 cafa14e0367f7c13ad140fd556f10f320a039783
SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
SHA512 9f42edf04c7af350a00fa4fdf92b8e2e6f47ab9d2d41491985b20cd0adde4f694253399f6a88f4bdd765c4f49792f25fb01e84ec03fd5d0be8bb61773d77d74d

C:\Users\Admin\AppData\Local\Temp\_MEI5602\lxml\etree.cp312-win_amd64.pyd

MD5 774379ece9640f6470af9e9474d86708
SHA1 0b7f47bc434ab0d92fea1308eeefce280b04175f
SHA256 bea5d2730782ddde7ec92b7768c25433e6e40fa88cab9a30511a821e1a7c385d
SHA512 6f6f12e6cce057083259f7cb51840b99afe057a6176bfd6ed7fe75d2ba0ca27aebe148821e1ed1d98d42a41235a2d3d4d905522d92ef6169fa23dee47e9adc88

C:\Users\Admin\AppData\Local\Temp\_MEI5602\lxml\_elementpath.cp312-win_amd64.pyd

MD5 7ad32ec2ea7725ce1699f1e7cd844490
SHA1 89c6d0a3c9226977d8ed822bdb6db94122c601a6
SHA256 10137a53030bcd07593d0b25bb8177ebdf29913485a283b5fb35e6a204f1087e
SHA512 2d6014ea3f4cbfe30a3efcedf67e925a2c0f4aa28100aba94fc99951994f88bcc28f011755c7c846d18997d45a1fe3465b0d331907bc907c6a754b9b7f4046f3

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-09 05:00

Reported

2024-05-09 05:03

Platform

win7-20240221-en

Max time kernel

118s

Max time network

119s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\idkk.pyc

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A
N/A N/A C:\Windows\system32\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2384 wrote to memory of 2588 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2384 wrote to memory of 2588 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2384 wrote to memory of 2588 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\idkk.pyc

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\idkk.pyc

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-05-09 05:00

Reported

2024-05-09 05:03

Platform

win10v2004-20240508-en

Max time kernel

91s

Max time network

126s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\idkk.pyc

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A

Suspicious use of SetWindowsHookEx

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

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\idkk.pyc

C:\Windows\system32\OpenWith.exe

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

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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp

Files

N/A