Malware Analysis Report

2025-03-15 03:13

Sample ID 240111-yyzf3sfedk
Target Keystrokesv105exe.exe
SHA256 b3eac493af9af76dcea70745bc294b6fbb9ffdc7c0564e341f4666af6ff153e7
Tags
pyinstaller empyrean upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b3eac493af9af76dcea70745bc294b6fbb9ffdc7c0564e341f4666af6ff153e7

Threat Level: Known bad

The file Keystrokesv105exe.exe was found to be: Known bad.

Malicious Activity Summary

pyinstaller empyrean upx

Detects Empyrean stealer

Empyrean family

Loads dropped DLL

UPX packed file

Unsigned PE

Detects Pyinstaller

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-01-11 20:12

Signatures

Detects Empyrean stealer

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

Empyrean family

empyrean

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

2024-01-11 20:12

Reported

2024-01-11 20:15

Platform

win7-20231215-en

Max time kernel

121s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

Signatures

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe N/A

UPX packed file

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

Processes

C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\_MEI20362\python39.dll

MD5 3ad8fd88bbcef0dec03bda12ccf0e714
SHA1 1f6e316e8dc860dd78703dfbdd32145aa11d0e8e
SHA256 6820fc7960da427aa0a1ccc633cbe38a132db7b3b996c75102aa652496e6c1a8
SHA512 39a1f5ef94ff9de45d67b09791e58522c1d72ae93b3c47a709cb5f9fc06f2f910210f997939ae96217a4856d13fec6487d9ea168071155092de2394d8a842824

\Users\Admin\AppData\Local\Temp\_MEI20362\python39.dll

MD5 057a59f4eadb3a9c1cdbfe89d0271023
SHA1 f9c6985e29bd925edc1c4513c28a79da184ddad9
SHA256 11128094c2d4c6bc175d755b418c9bf4bd6682a52ff1d1cf5a4e731c7c187bca
SHA512 d41271732ecb73a6cb109c7a91a33459ff7c8662c570fe331184d6fd6ff85d82124f8cb6cd9e023807d5696b781a3a5242738d8ed1a82884b966317d14826882

memory/2856-43-0x000007FEF6370000-0x000007FEF67F1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-11 20:12

Reported

2024-01-11 20:15

Platform

win10v2004-20231215-en

Max time kernel

144s

Max time network

163s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

Signatures

UPX packed file

upx
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
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
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
N/A N/A N/A N/A
N/A N/A N/A N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe

"C:\Users\Admin\AppData\Local\Temp\Keystrokesv105exe.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 18.53.126.40.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 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 11.2.37.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 121.118.77.104.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 232.137.73.23.in-addr.arpa udp
US 8.8.8.8:53 249.137.73.23.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 204.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 140.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 66.112.168.52.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\_MEI13442\python39.dll

MD5 25c2f126b06b7b2f6188d89224c4a277
SHA1 db0a08bd014bd61f91319b19730a6647febd16ad
SHA256 f37a76eced4d25f4f652cb2e4fc7aac2592156a38652cab7e87f1e63892e6a02
SHA512 aed3321475b3437abb614c1a927a6ce337dc0507f8ade6d86d3b31642eedb6c771cd113307c7f3cc8162a9903b90e89c1513cf1e4549914cbe8d7a55bd9ad0ef

C:\Users\Admin\AppData\Local\Temp\_MEI13442\python39.dll

MD5 5e7faf1d9263cb358e5e502bcb3123d8
SHA1 618954c4b8b1c1195970e8dd2f22a223c66899f6
SHA256 634d186cfc621a55819c57394b11d612849e4cf6079b1e4f70164442d9d0b6c8
SHA512 36dde359c64c5cae38defcf6717b6d5beff512b852eaf391946fd84d21d786b1ff5d1a5fa8ca9093c08325e465a2834146f84ade38c1e612d6829ee3c6974f31

memory/4144-44-0x00007FF993EA0000-0x00007FF994321000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\_MEI13442\VCRUNTIME140.dll

MD5 4a365ffdbde27954e768358f4a4ce82e
SHA1 a1b31102eee1d2a4ed1290da2038b7b9f6a104a3
SHA256 6a0850419432735a98e56857d5cfce97e9d58a947a9863ca6afadd1c7bcab27c
SHA512 54e4b6287c4d5a165509047262873085f50953af63ca0dcb7649c22aba5b439ab117a7e0d6e7f0a3e51a23e28a255ffd1ca1ddce4b2ea7f87bca1c9b0dbe2722

C:\Users\Admin\AppData\Local\Temp\_MEI13442\base_library.zip

MD5 3f765f7dc0b8a253469f8d44502a7219
SHA1 9f3d1584a79a4499a8549c3aff6fc78b639b8922
SHA256 84c6a539a3144a8c40061f7a4b2347cf039022737cd32863e440e16a29cbd01b
SHA512 5d9afab9310242c5e3716efd5b3ceb4c3e5e1c8542eb30ecf19c268fda3b19a05be8af660a79b08bb3cb35b11b558fc9285462e065d3a227f9eb149bbd425298

memory/4144-50-0x00007FF9A4380000-0x00007FF9A43A7000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\_MEI13442\_ctypes.pyd

MD5 b8f801273f7a5eb69d3c29f24a44d08c
SHA1 3a5a6e5a03aaf44a80d3798c48f4e38e62271cc1
SHA256 9a2dcd673697f0af45baf74b0e8151668a1553478214296c50e30a8ee491c023
SHA512 acc23f6ea88a6a0f0baba6e5541b362408e3de55d0bc051de8c84f4c95e9bd74e1ab7744551fede9e2cd8aaa0b31cc637af40a6e6b8dd2fdb434c582c5c256bd

C:\Users\Admin\AppData\Local\Temp\_MEI13442\libffi-7.dll

MD5 b5150b41ca910f212a1dd236832eb472
SHA1 a17809732c562524b185953ffe60dfa91ba3ce7d
SHA256 1a106569ac0ad3152f3816ff361aa227371d0d85425b357632776ac48d92ea8a
SHA512 9e82b0caa3d72bb4a7ad7d66ebfb10edb778749e89280bca67c766e72dc794e99aab2bc2980d64282a384699929ce6cc996462a73584898d2df67a57bff2a9c6

memory/4144-52-0x00007FF9A91D0000-0x00007FF9A91DF000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\_MEI13442\_socket.pyd

MD5 fafdc317ba6c1f505e0531efbbe4c518
SHA1 28a082b1a5ba5d8d1d7401eccb93ffe411b04d45
SHA256 434b0ea06c50ae679733743aa0ddefb73b8bf03ba0e784d698922eab54cf4ab7
SHA512 41a6fc947b0247ca4001c00c92377a0c56c3f53620b7090f890f26617257d88f1fb3b44bb2b1f290690655bbc40e91d3bdc9d6a16d109e6f5ec758db74123684

C:\Users\Admin\AppData\Local\Temp\_MEI13442\select.pyd

MD5 422e53009817df33a5d8242123dde046
SHA1 685a8ab58e7a60e4bc027668db983191366f949a
SHA256 294a3908f65b8b2c90ecc496b7698f4bd353810fc9ad2677f9384327e551fcbf
SHA512 6089a2a6bf449bcd0a31e9b57f42487ad927eccb3e397914eef0227d336b9fbd4257a46aebdc0d559e75b429d764978ff3398e96a4dd18ae5cdc8b8c7002bfe6

memory/4144-55-0x00007FF9A40D0000-0x00007FF9A40EA000-memory.dmp

memory/4144-58-0x00007FF9A4B00000-0x00007FF9A4B0E000-memory.dmp

memory/4144-60-0x00007FF9A4380000-0x00007FF9A43A7000-memory.dmp

memory/4144-59-0x00007FF993EA0000-0x00007FF994321000-memory.dmp

memory/4144-62-0x00007FF9A40D0000-0x00007FF9A40EA000-memory.dmp