Malware Analysis Report

2025-05-05 21:26

Sample ID 240521-zfsfgshg6w
Target PolarCrasher.exe
SHA256 0993ad20decfd8a1334035bf9062a70a808787b330908dc035feb04177b836d5
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

0993ad20decfd8a1334035bf9062a70a808787b330908dc035feb04177b836d5

Threat Level: Shows suspicious behavior

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

Malicious Activity Summary

pyinstaller

Loads dropped DLL

Detects Pyinstaller

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-21 20:40

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 20:39

Reported

2024-05-21 20:40

Platform

win11-20240508-en

Max time kernel

33s

Max time network

19s

Command Line

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

Signatures

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\PolarCrasher.exe N/A

Processes

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

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

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

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

C:\Windows\System32\rundll32.exe

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

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

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

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

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

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

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

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

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

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\_MEI49522\python312.dll

MD5 48ebfefa21b480a9b0dbfc3364e1d066
SHA1 b44a3a9b8c585b30897ddc2e4249dfcfd07b700a
SHA256 0cc4e557972488eb99ea4aeb3d29f3ade974ef3bcd47c211911489a189a0b6f2
SHA512 4e6194f1c55b82ee41743b35d749f5d92a955b219decacf9f1396d983e0f92ae02089c7f84a2b8296a3062afa3f9c220da9b7cd9ed01b3315ea4a953b4ecc6ce

C:\Users\Admin\AppData\Local\Temp\_MEI49522\VCRUNTIME140.dll

MD5 be8dbe2dc77ebe7f88f910c61aec691a
SHA1 a19f08bb2b1c1de5bb61daf9f2304531321e0e40
SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
SHA512 0da644472b374f1da449a06623983d0477405b5229e386accadb154b43b8b083ee89f07c3f04d2c0c7501ead99ad95aecaa5873ff34c5eeb833285b598d5a655

C:\Users\Admin\AppData\Local\Temp\_MEI49522\base_library.zip

MD5 f529dc05c2fb2e9325bcc626de5aa2ff
SHA1 98e1ee756c496f31b5a63a8f9c968a3821b92b99
SHA256 6af8511d62e7e7ed1805a07edd05a7fa83a728f0d24f92e7ed498ae01a0b92f2
SHA512 fd07ff25639e4c3eb8b2af2fd3c70d58c79a2fd967995721395e74ffc53c7783cc19fe6047feab656b964024f6c895f9071ee6d4ae1f42d0c89ab62835a1b73d

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_ctypes.pyd

MD5 452305c8c5fda12f082834c3120db10a
SHA1 9bab7b3fd85b3c0f2bedc3c5adb68b2579daa6e7
SHA256 543ce9d6dc3693362271a2c6e7d7fc07ad75327e0b0322301dd29886467b0b0e
SHA512 3d52afdbc8da74262475abc8f81415a0c368be70dbf5b2bd87c9c29ca3d14c44770a5b8b2e7c082f3ece0fd2ba1f98348a04b106a48d479fa6bd062712be8f7c

C:\Users\Admin\AppData\Local\Temp\_MEI49522\libffi-8.dll

MD5 0f8e4992ca92baaf54cc0b43aaccce21
SHA1 c7300975df267b1d6adcbac0ac93fd7b1ab49bd2
SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
SHA512 6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_bz2.pyd

MD5 90f58f625a6655f80c35532a087a0319
SHA1 d4a7834201bd796dc786b0eb923f8ec5d60f719b
SHA256 bd8621fcc901fa1de3961d93184f61ea71068c436794af2a4449738ccf949946
SHA512 b5bb1ecc195700ad7bea5b025503edd3770b1f845f9beee4b067235c4e63496d6e0b19bdd2a42a1b6591d1131a2dc9f627b2ae8036e294300bb6983ecd644dc8

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_lzma.pyd

MD5 cf8de1137f36141afd9ff7c52a3264ee
SHA1 afde95a1d7a545d913387624ef48c60f23cf4a3f
SHA256 22d10e2d6ad3e3ed3c49eb79ab69a81aaa9d16aeca7f948da2fe80877f106c16
SHA512 821985ff5bc421bd16b2fa5f77f1f4bf8472d0d1564bc5768e4dbe866ec52865a98356bb3ef23a380058acd0a25cd5a40a1e0dae479f15863e48c4482c89a03f

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_wmi.pyd

MD5 cb0564bc74258cb1320c606917ce5a71
SHA1 5b2bfc0d997cc5b7d985bfadddbfc180cb01f7cf
SHA256 0342916a60a7b39bbd5753d85e1c12a4d6f990499753d467018b21cefa49cf32
SHA512 43f3afa9801fcf5574a30f4d3e7ae6aff65c7716462f9aba5bc8055887a44bf38fba121639d8b31427e738752fe3b085d1d924de2633f4c042433e1960023f38

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_tkinter.pyd

MD5 eb6bbe091b6e2b0ff53ad736fdfcd456
SHA1 fbc73063986f0c1340b1c5c40c22b7dd47c7f1a3
SHA256 198e2cee4502f69dfff2dd029308febce3d1e1d4dd9fe122e891bf95c7910d54
SHA512 a928c313f0617d7409a96099cbd01b5811f2618c181725cecd45bcf2b36e436578aeedadc0405f8727b966cc2cdf2fcd9788df572d7cb39ebb9e5f532533b4c5

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_ssl.pyd

MD5 6774d6fb8b9e7025254148dc32c49f47
SHA1 212e232da95ec8473eb0304cf89a5baf29020137
SHA256 2b6f1b1ac47cb7878b62e8d6bb587052f86ca8145b05a261e855305b9ca3d36c
SHA512 5d9247dce96599160045962af86fc9e5439f66a7e8d15d1d00726ec1b3b49d9dd172d667380d644d05cb18e45a5419c2594b4bcf5a16ea01542ae4d7d9a05c6e

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_socket.pyd

MD5 439b3ad279befa65bb40ecebddd6228b
SHA1 d3ea91ae7cad9e1ebec11c5d0517132bbc14491e
SHA256 24017d664af20ee3b89514539345caac83eca34825fcf066a23e8a4c99f73e6d
SHA512 a335e1963bb21b34b21aef6b0b14ba8908a5343b88f65294618e029e3d4d0143ea978a5fd76d2df13a918ffab1e2d7143f5a1a91a35e0cc1145809b15af273bd

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_queue.pyd

MD5 5aa4b057ba2331eed6b4b30f4b3e0d52
SHA1 6b9db113c2882743984c3d8b70ec49fc4a136c23
SHA256 d43dca0e00c3c11329b68177e967cf5240495c4786f5afa76ac4f267c3a5cdb9
SHA512 aa5aa3285ea5c177eca055949c5f550dbd2d2699202a29efe2077213cbc95fff2a36d99eecce249ac04d95baf149b3d8c557a67fc39ead3229f0b329e83447b7

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_hashlib.pyd

MD5 8baeb2bd6e52ba38f445ef71ef43a6b8
SHA1 4132f9cd06343ef8b5b60dc8a62be049aa3270c2
SHA256 6c50c9801a5caf0bb52b384f9a0d5a4aa182ca835f293a39e8999cf6edf2f087
SHA512 804a4e19ea622646cea9e0f8c1e284b7f2d02f3620199fa6930dbdadc654fa137c1e12757f87c3a1a71ceff9244aa2f598ee70d345469ca32a0400563fe3aa65

C:\Users\Admin\AppData\Local\Temp\_MEI49522\_decimal.pyd

MD5 f78f9855d2a7ca940b6be51d68b80bf2
SHA1 fd8af3dbd7b0ea3de2274517c74186cb7cd81a05
SHA256 d4ae192bbd4627fc9487a2c1cd9869d1b461c20cfd338194e87f5cf882bbed12
SHA512 6b68c434a6f8c436d890d3c1229d332bd878e5777c421799f84d79679e998b95d2d4a013b09f50c5de4c6a85fcceb796f3c486e36a10cbac509a0da8d8102b18

C:\Users\Admin\AppData\Local\Temp\_MEI49522\zlib1.dll

MD5 b4a0b3d5abc631e95c074eee44e73f96
SHA1 c22c8baa23d731a0e08757d0449ca3dd662fd9e6
SHA256 c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e
SHA512 56bafd1c6c77343f724a8430a1f496b4a3160faa9a19ea40796438ae67d6c45f8a13224dcf3d1defb97140a2e47a248dd837801a8cb4674e7890b495aeec538e

C:\Users\Admin\AppData\Local\Temp\_MEI49522\unicodedata.pyd

MD5 fc47b9e23ddf2c128e3569a622868dbe
SHA1 2814643b70847b496cbda990f6442d8ff4f0cb09
SHA256 2a50d629895a05b10a262acf333e7a4a31db5cb035b70d14d1a4be1c3e27d309
SHA512 7c08683820498fdff5f1703db4ad94ad15f2aa877d044eddc4b54d90e7dc162f48b22828cd577c9bb1b56f7c11f777f9785a9da1867bf8c0f2b6e75dc57c3f53

C:\Users\Admin\AppData\Local\Temp\_MEI49522\tk86t.dll

MD5 ef0d7469a88afb64944e2b2d91eb3e7f
SHA1 a26fd3de8da3e4aec417cebfa2de78f9ba7cf05b
SHA256 23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da
SHA512 909f0b73b64bad84b896a973b58735747d87b5133207cb3d9fa9ce0c026ee59255b7660c43bb86b1ddeef9fbb80b2250719fd379cff7afd9dbec6f6a007ed093

C:\Users\Admin\AppData\Local\Temp\_MEI49522\tcl86t.dll

MD5 b0261de5ef4879a442abdcd03dedfa3c
SHA1 7f13684ff91fcd60b4712f6cf9e46eb08e57c145
SHA256 28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e
SHA512 e39a242e321e92761256b2b4bdde7f9d880b5c64d4778b87fa98bf4ac93a0248e408a332ae214b7ffd76fb9d219555dc10ab8327806d8d63309bf6d147ebbd59

C:\Users\Admin\AppData\Local\Temp\_MEI49522\select.pyd

MD5 e1604afe8244e1ce4c316c64ea3aa173
SHA1 99704d2c0fa2687997381b65ff3b1b7194220a73
SHA256 74cca85600e7c17ea6532b54842e26d3cae9181287cdf5a4a3c50af4dab785e5
SHA512 7bf35b1a9da9f1660f238c2959b3693b7d9d2da40cf42c6f9eba2164b73047340d0adff8995049a2fe14e149eba05a5974eee153badd9e8450f961207f0b3d42

C:\Users\Admin\AppData\Local\Temp\_MEI49522\pyexpat.pyd

MD5 e2d1c738d6d24a6dd86247d105318576
SHA1 384198f20724e4ede9e7b68e2d50883c664eee49
SHA256 cdc09fbae2f103196215facd50d108be3eff60c8ee5795dcc80bf57a0f120cdf
SHA512 3f9cb64b4456438dea82a0638e977f233faf0a08433f01ca87ba65c7e80b0680b0ec3009fa146f02ae1fdcc56271a66d99855d222e77b59a1713caf952a807da

C:\Users\Admin\AppData\Local\Temp\_MEI49522\libssl-3.dll

MD5 bfc834bb2310ddf01be9ad9cff7c2a41
SHA1 fb1d601b4fcb29ff1b13b0d2ed7119bd0472205c
SHA256 41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1
SHA512 6af473c7c0997f2847ebe7cee8ef67cd682dee41720d4f268964330b449ba71398fda8954524f9a97cc4cdf9893b8bdc7a1cf40e9e45a73f4f35a37f31c6a9c3

C:\Users\Admin\AppData\Local\Temp\_MEI49522\libcrypto-3.dll

MD5 51e8a5281c2092e45d8c97fbdbf39560
SHA1 c499c810ed83aaadce3b267807e593ec6b121211
SHA256 2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a
SHA512 98b91719b0975cb38d3b3c7b6f820d184ef1b64d38ad8515be0b8b07730e2272376b9e51631fe9efd9b8a1709fea214cf3f77b34eeb9fd282eb09e395120e7cb

C:\Users\Admin\AppData\Local\Temp\_MEI70442\tcl\encoding\euc-cn.enc

MD5 c5aa0d11439e0f7682dae39445f5dab4
SHA1 73a6d55b894e89a7d4cb1cd3ccff82665c303d5c
SHA256 1700af47dc012a48cec89cf1dfae6d1d0d2f40ed731eff6ca55296a055a11c00
SHA512 eee6058bd214c59bcc11e6de7265da2721c119cc9261cfd755a98e270ff74d2d73e3e711aa01a0e3414c46d82e291ef0df2ad6c65ca477c888426d5a1d2a3bc5