Malware Analysis Report

2025-08-10 23:14

Sample ID 221031-1zybhseden
Target 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
Tags
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323

Threat Level: Likely malicious

The file 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323 was found to be: Likely malicious.

Malicious Activity Summary


Executes dropped EXE

Suspicious use of SetThreadContext

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-31 22:05

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-31 22:05

Reported

2022-10-31 22:08

Platform

win10-20220812-en

Max time kernel

144s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe"

Signatures

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 2808 wrote to memory of 4780 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe
PID 4780 wrote to memory of 3580 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Windows\SysWOW64\schtasks.exe
PID 4780 wrote to memory of 3580 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Windows\SysWOW64\schtasks.exe
PID 4780 wrote to memory of 3580 N/A C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe C:\Windows\SysWOW64\schtasks.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4384 wrote to memory of 4324 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 4324 wrote to memory of 3216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 4324 wrote to memory of 3216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 4324 wrote to memory of 3216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 5072 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Processes

C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe

"C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe"

C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe

C:\Users\Admin\AppData\Local\Temp\8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323.exe

C:\Windows\SysWOW64\schtasks.exe

/C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Windows\SysWOW64\schtasks.exe

/C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

Network

Files

memory/2808-115-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-116-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-117-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-118-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-119-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-120-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-121-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-123-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-122-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-124-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-125-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-126-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-127-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-128-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-129-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-130-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-131-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-132-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-133-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-134-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-135-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-136-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-138-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-137-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-139-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-140-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-141-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-142-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-143-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-144-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-145-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-146-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-147-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-148-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-149-0x0000000000D20000-0x0000000000D76000-memory.dmp

memory/2808-150-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-151-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-152-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-153-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-154-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-155-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-156-0x0000000007AE0000-0x0000000007BAC000-memory.dmp

memory/2808-157-0x00000000080B0000-0x00000000085AE000-memory.dmp

memory/2808-158-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-159-0x0000000007C90000-0x0000000007D22000-memory.dmp

memory/2808-160-0x0000000007C20000-0x0000000007C26000-memory.dmp

memory/2808-161-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-162-0x0000000007FB0000-0x0000000008026000-memory.dmp

memory/2808-163-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-164-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-165-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-166-0x0000000007C70000-0x0000000007C8E000-memory.dmp

memory/2808-167-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-169-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-170-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-168-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-171-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-172-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-173-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4780-174-0x0000000000402354-mapping.dmp

memory/4780-175-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/2808-177-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-178-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-179-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-176-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-181-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-182-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-183-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-184-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-186-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/4780-185-0x0000000077960000-0x0000000077AEE000-memory.dmp

memory/3580-208-0x0000000000000000-mapping.dmp

memory/4780-227-0x0000000000400000-0x0000000000406000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

MD5 d0685ec186aeff2be9060012e656bee4
SHA1 2e1111fd146a44534ff291aa5c43e6fa5514cd29
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA512 880f5a9a76ffc3cc45cddc0f68147a502dd89fa4a3ac0d66f93207c4d7bff5a26019507408dc6fb064716081e6d57a52faf10f62251742c227d584631e2bebb2

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

MD5 d0685ec186aeff2be9060012e656bee4
SHA1 2e1111fd146a44534ff291aa5c43e6fa5514cd29
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA512 880f5a9a76ffc3cc45cddc0f68147a502dd89fa4a3ac0d66f93207c4d7bff5a26019507408dc6fb064716081e6d57a52faf10f62251742c227d584631e2bebb2

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

MD5 d0685ec186aeff2be9060012e656bee4
SHA1 2e1111fd146a44534ff291aa5c43e6fa5514cd29
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA512 880f5a9a76ffc3cc45cddc0f68147a502dd89fa4a3ac0d66f93207c4d7bff5a26019507408dc6fb064716081e6d57a52faf10f62251742c227d584631e2bebb2

memory/4324-284-0x0000000000402354-mapping.dmp

memory/3216-318-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

MD5 d0685ec186aeff2be9060012e656bee4
SHA1 2e1111fd146a44534ff291aa5c43e6fa5514cd29
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA512 880f5a9a76ffc3cc45cddc0f68147a502dd89fa4a3ac0d66f93207c4d7bff5a26019507408dc6fb064716081e6d57a52faf10f62251742c227d584631e2bebb2

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\oobeldr.exe.log

MD5 db5ef8d7c51bad129d9097bf953e4913
SHA1 8439db960aa2d431bf5ec3c37af775b45eb07e06
SHA256 1248e67f10b47b397af3c8cbe342bad4be75c68b8e10f4ec6341195cc3138bd9
SHA512 04572485790b25e1751347e43b47174051cd153dd75fd55ee5590d25a2579f344cd96cf86cf45bdb7759e3e6d0f734d0ff717148ca70f501b9869e964e036fee

memory/4436-391-0x0000000000402354-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe

MD5 d0685ec186aeff2be9060012e656bee4
SHA1 2e1111fd146a44534ff291aa5c43e6fa5514cd29
SHA256 8521c51a30f05b56c2a3c1ace9603ca7d54ec538ff44a0cd1b5f100e58da7323
SHA512 880f5a9a76ffc3cc45cddc0f68147a502dd89fa4a3ac0d66f93207c4d7bff5a26019507408dc6fb064716081e6d57a52faf10f62251742c227d584631e2bebb2