1d7339aa3f70900564d27bfa2700063c7f1dbae84a07e3a182ae351c7bba23d0

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 22:00

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General

Target

bce9358187f87db6b269bac3c3e52edc.exe
Size

136KB
MD5

bce9358187f87db6b269bac3c3e52edc
SHA1

08042b0bc6e57a9d006631e35618ea7b97c22dbd
SHA256

1d7339aa3f70900564d27bfa2700063c7f1dbae84a07e3a182ae351c7bba23d0
SHA512

0073ffe9a0631003090f23a0e4862320a37faea3f6edce683d2ff64389227c29aebe3352b82e39a157291ba46ac15484b1a76ea003940f283436690fe77e908a
SSDEEP

3072:lj4SxxPPsMP9xbbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyVU7p6vIE:6SxxPPsMFZwvP6bQ7yMP+DE827MwE

Score

10^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	psure.exe

Windows security bypass 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	psure.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	bce9358187f87db6b269bac3c3e52edc.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	psure.exe

Deletes itself 1 IoCs

pid	Process
2612	psure.exe

Executes dropped EXE 1 IoCs

pid	Process
2612	psure.exe

Windows security modification 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	psure.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	psure.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	bce9358187f87db6b269bac3c3e52edc.exe
File opened for modification	\??\PhysicalDrive0	psure.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	psure.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\psure.exe	bce9358187f87db6b269bac3c3e52edc.exe
File opened for modification	C:\Windows\psure.exe	bce9358187f87db6b269bac3c3e52edc.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	psure.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	psure.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}\da-8b-f8-21-78-f7	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	psure.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0137000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	psure.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}\WpadDecisionTime = d02992306d72da01	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}\WpadDecision = "0"	psure.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}\WpadNetworkName = "Network 3"	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-8b-f8-21-78-f7\WpadDecision = "0"	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	psure.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{42FB9790-6191-40B8-8E9C-954FB96BA2BE}\WpadDecisionReason = "1"	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-8b-f8-21-78-f7	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	psure.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	psure.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	psure.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-8b-f8-21-78-f7\WpadDecisionReason = "1"	psure.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-8b-f8-21-78-f7\WpadDecisionTime = d02992306d72da01	psure.exe

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	bce9358187f87db6b269bac3c3e52edc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	bce9358187f87db6b269bac3c3e52edc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	bce9358187f87db6b269bac3c3e52edc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	psure.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	psure.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	psure.exe

C:\Users\Admin\AppData\Local\Temp\bce9358187f87db6b269bac3c3e52edc.exe
"C:\Users\Admin\AppData\Local\Temp\bce9358187f87db6b269bac3c3e52edc.exe"
1⤵
- Looks for VMWare Tools registry key
- Writes to the Master Boot Record (MBR)
- Drops file in Windows directory
- Modifies registry class
PID:1720

C:\Windows\psure.exe
"C:\Windows\psure.exe"
1⤵
- Modifies security service
- Windows security bypass
- Looks for VMWare Tools registry key
- Deletes itself
- Executes dropped EXE
- Windows security modification
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Modifies registry class
PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\psure.exe

Filesize
136KB

MD5
bce9358187f87db6b269bac3c3e52edc

SHA1
08042b0bc6e57a9d006631e35618ea7b97c22dbd

SHA256
1d7339aa3f70900564d27bfa2700063c7f1dbae84a07e3a182ae351c7bba23d0

SHA512
0073ffe9a0631003090f23a0e4862320a37faea3f6edce683d2ff64389227c29aebe3352b82e39a157291ba46ac15484b1a76ea003940f283436690fe77e908a

Download Submit
memory/1720-0-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/1720-1-0x0000000000250000-0x0000000000280000-memory.dmp

Filesize
192KB

Download
memory/1720-3-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/1720-2-0x0000000000280000-0x0000000000282000-memory.dmp

Filesize
8KB

Download
memory/1720-4-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1720-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1720-7-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/1720-6-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1720-8-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/1720-9-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1720-10-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/1720-11-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1720-28-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/1720-29-0x0000000001F70000-0x0000000001F71000-memory.dmp

Filesize
4KB

Download
memory/1720-27-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/1720-26-0x0000000002140000-0x0000000002141000-memory.dmp

Filesize
4KB

Download
memory/1720-25-0x0000000002150000-0x0000000002151000-memory.dmp

Filesize
4KB

Download
memory/1720-24-0x0000000002120000-0x0000000002121000-memory.dmp

Filesize
4KB

Download
memory/1720-23-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/1720-22-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

Filesize
4KB

Download
memory/1720-21-0x0000000001FD0000-0x0000000001FD1000-memory.dmp

Filesize
4KB

Download
memory/1720-20-0x0000000001FA0000-0x0000000001FA1000-memory.dmp

Filesize
4KB

Download
memory/1720-19-0x0000000001FB0000-0x0000000001FB1000-memory.dmp

Filesize
4KB

Download
memory/1720-18-0x0000000001F80000-0x0000000001F81000-memory.dmp

Filesize
4KB

Download
memory/1720-17-0x0000000001F90000-0x0000000001F91000-memory.dmp

Filesize
4KB

Download
memory/1720-16-0x0000000001F60000-0x0000000001F61000-memory.dmp

Filesize
4KB

Download
memory/1720-15-0x0000000001F00000-0x0000000001F01000-memory.dmp

Filesize
4KB

Download
memory/1720-12-0x0000000001F10000-0x0000000001F11000-memory.dmp

Filesize
4KB

Download
memory/1720-36-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/1720-38-0x0000000000250000-0x0000000000280000-memory.dmp

Filesize
192KB

Download
memory/2612-31-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-32-0x00000000002E0000-0x0000000000310000-memory.dmp

Filesize
192KB

Download
memory/2612-33-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/2612-35-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download
memory/2612-39-0x0000000000520000-0x0000000000521000-memory.dmp

Filesize
4KB

Download
memory/2612-41-0x0000000000760000-0x0000000000761000-memory.dmp

Filesize
4KB

Download
memory/2612-51-0x0000000002C70000-0x0000000002C71000-memory.dmp

Filesize
4KB

Download
memory/2612-54-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/2612-53-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/2612-52-0x0000000000500000-0x0000000000501000-memory.dmp

Filesize
4KB

Download
memory/2612-50-0x0000000002C80000-0x0000000002C81000-memory.dmp

Filesize
4KB

Download
memory/2612-49-0x0000000002C50000-0x0000000002C51000-memory.dmp

Filesize
4KB

Download
memory/2612-48-0x0000000002C60000-0x0000000002C61000-memory.dmp

Filesize
4KB

Download
memory/2612-47-0x0000000002770000-0x0000000002771000-memory.dmp

Filesize
4KB

Download
memory/2612-46-0x0000000002C40000-0x0000000002C41000-memory.dmp

Filesize
4KB

Download
memory/2612-45-0x0000000002550000-0x0000000002551000-memory.dmp

Filesize
4KB

Download
memory/2612-44-0x0000000002530000-0x0000000002531000-memory.dmp

Filesize
4KB

Download
memory/2612-43-0x00000000024E0000-0x00000000024E1000-memory.dmp

Filesize
4KB

Download
memory/2612-42-0x0000000001FB0000-0x0000000001FB1000-memory.dmp

Filesize
4KB

Download
memory/2612-40-0x0000000000740000-0x0000000000741000-memory.dmp

Filesize
4KB

Download
memory/2612-37-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/2612-34-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/2612-55-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-56-0x00000000002E0000-0x0000000000310000-memory.dmp

Filesize
192KB

Download
memory/2612-57-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-59-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-60-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-61-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-63-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-64-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-65-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-66-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-67-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-68-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-69-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-70-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download
memory/2612-71-0x0000000000400000-0x000000000048F000-memory.dmp

Filesize
572KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads