Malware Analysis Report

2024-10-23 21:33

Sample ID 220521-plt66aagbn
Target 4c8b0678d48632fa7a7ee87c0350c90a0b46b31e8a46fc701a932880a18fe878
SHA256 4c8b0678d48632fa7a7ee87c0350c90a0b46b31e8a46fc701a932880a18fe878
Tags
masslogger coreentity ransomware rezer0 spyware stealer
score
10/10

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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4c8b0678d48632fa7a7ee87c0350c90a0b46b31e8a46fc701a932880a18fe878

Threat Level: Known bad

The file 4c8b0678d48632fa7a7ee87c0350c90a0b46b31e8a46fc701a932880a18fe878 was found to be: Known bad.

Malicious Activity Summary

masslogger coreentity ransomware rezer0 spyware stealer

CoreEntity .NET Packer

MassLogger log file

MassLogger

ReZer0 packer

Checks computer location settings

Looks up external IP address via web service

Suspicious use of SetThreadContext

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-05-21 12:25

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-05-21 12:25

Reported

2022-05-21 12:37

Platform

win7-20220414-en

Max time kernel

55s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr" /S

Signatures

CoreEntity .NET Packer

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

MassLogger

stealer spyware masslogger

MassLogger log file

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

ReZer0 packer

rezer0
Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1972 set thread context of 1720 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr N/A

Processes

C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

"C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr" /S

C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

"{path}"

Network

Country Destination Domain Proto
US 8.8.8.8:53 api.ipify.org udp
US 52.20.78.240:80 api.ipify.org tcp

Files

memory/1972-54-0x0000000001040000-0x000000000112C000-memory.dmp

memory/1972-55-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

memory/1972-56-0x0000000000610000-0x0000000000618000-memory.dmp

memory/1972-57-0x00000000080C0000-0x0000000008170000-memory.dmp

memory/1720-58-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-61-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-59-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-62-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-63-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-64-0x00000000004A33CE-mapping.dmp

memory/1720-66-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-68-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-70-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-72-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-74-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-76-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-78-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-80-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-82-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-84-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-86-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-88-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-90-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-92-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-94-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-96-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-98-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-100-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-102-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-104-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-106-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-108-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-110-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-112-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-114-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-118-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-116-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-120-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/1720-578-0x0000000004E05000-0x0000000004E16000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-05-21 12:25

Reported

2022-05-21 12:37

Platform

win10v2004-20220414-en

Max time kernel

90s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr" /S

Signatures

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3656 set thread context of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 3656 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr
PID 208 wrote to memory of 4100 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Windows\SysWOW64\cmd.exe
PID 208 wrote to memory of 4100 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Windows\SysWOW64\cmd.exe
PID 208 wrote to memory of 4100 N/A C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr C:\Windows\SysWOW64\cmd.exe
PID 4100 wrote to memory of 2408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4100 wrote to memory of 2408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4100 wrote to memory of 2408 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

"C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr" /S

C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr

"{path}"

C:\Windows\SysWOW64\cmd.exe

"cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr' & exit

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\IMG_6110.scr'

Network

Country Destination Domain Proto
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp
BE 8.238.110.126:80 tcp

Files

memory/3656-130-0x00000000002A0000-0x000000000038C000-memory.dmp

memory/3656-131-0x0000000007630000-0x0000000007BD4000-memory.dmp

memory/3656-132-0x0000000007120000-0x00000000071B2000-memory.dmp

memory/3656-133-0x00000000070D0000-0x00000000070DA000-memory.dmp

memory/3656-134-0x000000000ADD0000-0x000000000AE6C000-memory.dmp

memory/208-135-0x0000000000000000-mapping.dmp

memory/208-136-0x0000000000400000-0x00000000004A8000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\IMG_6110.scr.log

MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

memory/208-139-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-141-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-143-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-145-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-147-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-149-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-151-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-153-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-155-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-157-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-159-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-161-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-163-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-165-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-167-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-169-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-171-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-173-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-175-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-177-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-179-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-181-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-183-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-185-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-187-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-189-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-191-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-193-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-195-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-197-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-199-0x0000000000400000-0x00000000004A8000-memory.dmp

memory/208-646-0x00000000058B0000-0x0000000005916000-memory.dmp

memory/4100-647-0x0000000000000000-mapping.dmp

memory/2408-648-0x0000000000000000-mapping.dmp

memory/2408-649-0x0000000004DD0000-0x0000000004E06000-memory.dmp

memory/2408-650-0x0000000005570000-0x0000000005B98000-memory.dmp

memory/2408-651-0x00000000054D0000-0x00000000054F2000-memory.dmp

memory/2408-652-0x0000000005CD0000-0x0000000005D36000-memory.dmp

memory/2408-653-0x0000000006380000-0x000000000639E000-memory.dmp

memory/2408-654-0x0000000007DF0000-0x000000000846A000-memory.dmp

memory/2408-655-0x0000000006810000-0x000000000682A000-memory.dmp

memory/2408-656-0x0000000007410000-0x00000000074A6000-memory.dmp

memory/2408-657-0x0000000006950000-0x0000000006972000-memory.dmp