Malware Analysis Report

2025-08-10 23:15

Sample ID 221031-116paadef4
Target a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
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

a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80

Threat Level: Likely malicious

The file a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80 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 22:08

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-31 22:08

Reported

2022-10-31 22:10

Platform

win10v2004-20220812-en

Max time kernel

122s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.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 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 1092 wrote to memory of 4740 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe
PID 4740 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Windows\SysWOW64\schtasks.exe
PID 4740 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Windows\SysWOW64\schtasks.exe
PID 4740 wrote to memory of 4988 N/A C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe C:\Windows\SysWOW64\schtasks.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 912 wrote to memory of 2064 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2064 wrote to memory of 4216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 2064 wrote to memory of 4216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 2064 wrote to memory of 4216 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Windows\SysWOW64\schtasks.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 N/A C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
PID 2172 wrote to memory of 824 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\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe

"C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe"

C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.exe

C:\Users\Admin\AppData\Local\Temp\a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80.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

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 20.189.173.4:443 tcp

Files

memory/1092-132-0x00000000003C0000-0x0000000000416000-memory.dmp

memory/1092-133-0x0000000007960000-0x0000000007F04000-memory.dmp

memory/1092-134-0x00000000073B0000-0x0000000007442000-memory.dmp

memory/1092-135-0x00000000078E0000-0x0000000007956000-memory.dmp

memory/1092-136-0x0000000004EF0000-0x0000000004F0E000-memory.dmp

memory/4740-137-0x0000000000000000-mapping.dmp

memory/4740-138-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4740-140-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4988-141-0x0000000000000000-mapping.dmp

memory/4740-142-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 f5906d4ad1e6e9819c4d86b8a71f3415
SHA1 cf16690f1bdf69f062b9eb81cf0ad43724f5a6a3
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA512 8922cae101418038a6d5c09fff09f4b13ed1adeff88b1a783ef0101a1c294334dd46f2f1cb484c46f325d1b9931ce3a88e045eaf5314ad06d0aec7e97ea7966a

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

MD5 f5906d4ad1e6e9819c4d86b8a71f3415
SHA1 cf16690f1bdf69f062b9eb81cf0ad43724f5a6a3
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA512 8922cae101418038a6d5c09fff09f4b13ed1adeff88b1a783ef0101a1c294334dd46f2f1cb484c46f325d1b9931ce3a88e045eaf5314ad06d0aec7e97ea7966a

memory/2064-145-0x0000000000000000-mapping.dmp

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

MD5 f5906d4ad1e6e9819c4d86b8a71f3415
SHA1 cf16690f1bdf69f062b9eb81cf0ad43724f5a6a3
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA512 8922cae101418038a6d5c09fff09f4b13ed1adeff88b1a783ef0101a1c294334dd46f2f1cb484c46f325d1b9931ce3a88e045eaf5314ad06d0aec7e97ea7966a

memory/4216-150-0x0000000000000000-mapping.dmp

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

MD5 f5906d4ad1e6e9819c4d86b8a71f3415
SHA1 cf16690f1bdf69f062b9eb81cf0ad43724f5a6a3
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA512 8922cae101418038a6d5c09fff09f4b13ed1adeff88b1a783ef0101a1c294334dd46f2f1cb484c46f325d1b9931ce3a88e045eaf5314ad06d0aec7e97ea7966a

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

MD5 03d2df1e8834bc4ec1756735429b458c
SHA1 4ee6c0f5b04c8e0c5076219c5724032daab11d40
SHA256 745ab70552d9a0463b791fd8dc1942838ac3e34fb1a68f09ed3766c7e3b05631
SHA512 2482c3d4478125ccbc7f224f50e86b7bf925ed438b59f4dce57b9b6bcdb59df51417049096b131b6b911173550eed98bc92aba7050861de303a692f0681b197b

memory/824-153-0x0000000000000000-mapping.dmp

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

MD5 f5906d4ad1e6e9819c4d86b8a71f3415
SHA1 cf16690f1bdf69f062b9eb81cf0ad43724f5a6a3
SHA256 a1c77809506a2a49c35535a7a09476597f1e01632764292e655ccf2dfd5d6f80
SHA512 8922cae101418038a6d5c09fff09f4b13ed1adeff88b1a783ef0101a1c294334dd46f2f1cb484c46f325d1b9931ce3a88e045eaf5314ad06d0aec7e97ea7966a