Malware Analysis Report

2024-09-11 01:46

Sample ID 240318-qldd3sac8t
Target d39cbfca5b4af90e9557d6349d2a68da
SHA256 212e7f5ed4a581b4d778dfef226738c6db56b4b4006526259392d03062587887
Tags
medusalocker evasion ransomware spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

212e7f5ed4a581b4d778dfef226738c6db56b4b4006526259392d03062587887

Threat Level: Known bad

The file d39cbfca5b4af90e9557d6349d2a68da was found to be: Known bad.

Malicious Activity Summary

medusalocker evasion ransomware spyware stealer trojan

UAC bypass

MedusaLocker

MedusaLocker payload

Medusalocker family

Renames multiple (213) files with added filename extension

Renames multiple (179) files with added filename extension

Deletes shadow copies

Executes dropped EXE

Reads user/profile data of web browsers

Drops desktop.ini file(s)

Enumerates connected drives

Checks whether UAC is enabled

Enumerates physical storage devices

Unsigned PE

Interacts with shadow copies

Uses Volume Shadow Copy service COM API

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System policy modification

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Defense Evasion
TA0005
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Impair Defenses
T1562
Disable or Modify Tools
T1562.001
Modify Registry
T1112
Indicator Removal
T1070
File Deletion
T1070.004
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Peripheral Device Discovery
T1120
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Inhibit System Recovery
T1490
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-03-18 13:20

Signatures

MedusaLocker payload

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

Medusalocker family

medusalocker

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-18 13:20

Reported

2024-03-18 13:23

Platform

win7-20231129-en

Max time kernel

126s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe"

Signatures

MedusaLocker

ransomware medusalocker

MedusaLocker payload

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

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Deletes shadow copies

ransomware

Renames multiple (213) files with added filename extension

ransomware

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Reads user/profile data of web browsers

spyware stealer

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\desktop.ini C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Enumerates physical storage devices

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\vssadmin.exe N/A
N/A N/A C:\Windows\SysWOW64\vssadmin.exe N/A
N/A N/A C:\Windows\SysWOW64\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
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Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3044 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 3000 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2552 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2668 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2868 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2496 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\vssadmin.exe
PID 3044 wrote to memory of 2484 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2484 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2484 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 3044 wrote to memory of 2484 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 2524 wrote to memory of 1836 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2524 wrote to memory of 1836 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2524 wrote to memory of 1836 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2524 wrote to memory of 1836 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe

"C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe"

C:\Windows\SysWOW64\vssadmin.exe

vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Windows\SysWOW64\vssadmin.exe

vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Windows\SysWOW64\vssadmin.exe

vssadmin.exe Delete Shadows /All /Quiet

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Windows\system32\taskeng.exe

taskeng.exe {179CCC37-5B2D-4B68-B118-0D0891BC1F50} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

Network

N/A

Files

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\HOW_TO_RECOVER_DATA.html

MD5 d1341cd1b8f8ec9196bb2d2c9d4ba113
SHA1 aaef4ec7e7b649a9d40799114362839dc887bd3c
SHA256 413af1a6042f99c8a9b7a65d6c95b290a5de8b177a675eadd73b9986866aaa99
SHA512 7840c0e5d354bf990dbc3077569d4d12e112fddf31a5c52e5372303a6c106c8e1fa39287e4fe08fa8d7873070329ce63d7423afeac0b552a4ced7721ae6d155e

C:\Users\Default\NTUSER.DAT.LOG2

MD5 b4cc0af3f40fc56e1fb1cbeb9390df35
SHA1 27f5505831ed9008d465a8682dbfdb2a9ca216c2
SHA256 f9491e7dbdabb9bf2a1c5c9e18ba78df07b9f7cd36263c02e0018924d1a4e03f
SHA512 b1e53c8b7b6e6c5f872384396bf84b27f6b5c931daac505657f3a0f8950d1d6d34292bf4cef1ccb4948bb76e229f9394b7bdc11fa73629bce6daa1556364fa11

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 d39cbfca5b4af90e9557d6349d2a68da
SHA1 9322449f3647b82c920e30bbf95f8ce25f875c7a
SHA256 212e7f5ed4a581b4d778dfef226738c6db56b4b4006526259392d03062587887
SHA512 0aea822b94e81d1849d1e9713e019784a474885bfbfa6e88c066098cf2cf145706c33a5fcd00a616530a3414492747bdf68ea953433dfa7780bf0edf6b3f9ee7

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-18 13:20

Reported

2024-03-18 13:23

Platform

win10v2004-20240226-en

Max time kernel

153s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe"

Signatures

MedusaLocker

ransomware medusalocker

MedusaLocker payload

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

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Renames multiple (179) files with added filename extension

ransomware

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Reads user/profile data of web browsers

spyware stealer

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
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Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\SysWOW64\Wbem\wmic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1484 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 4508 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3960 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3120 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3120 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe
PID 1484 wrote to memory of 3120 N/A C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe C:\Windows\SysWOW64\Wbem\wmic.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe

"C:\Users\Admin\AppData\Local\Temp\d39cbfca5b4af90e9557d6349d2a68da.exe"

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Windows\SysWOW64\Wbem\wmic.exe

wmic.exe SHADOWCOPY /nointeractive

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3860 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 43.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
GB 142.250.187.234:443 tcp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 28.160.77.104.in-addr.arpa udp
US 8.8.8.8:53 182.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 25.73.42.20.in-addr.arpa udp

Files

\Device\HarddiskVolume1\Boot\HOW_TO_RECOVER_DATA.html

MD5 e01e2670c5b1de2efef0373503a5c3c7
SHA1 026e036d5d6138f795ff88400d4fc27575dbaafd
SHA256 496ec471a6ef4fcc0cefd417ec820d1a807b63de6497ea3c83d0522e308c06b4
SHA512 437b564abba4b3bbadbc59ecdd64ff58320a749e2ccd7a14ccc919a1212dd797bcd0f1350c83ac5214356be1d0c14efbae12e8061043ef4b59a061b8e5d5d439

C:\Users\Default\ntuser.dat.LOG2

MD5 b9bed0c13bfaf9d68e7259bcd0d7b0f5
SHA1 38595769a4b757fc900fe61c653a904b35495d2d
SHA256 d9e382b41cacd3fc008474eb1c6608e12e01abeb9269c21ba8f34ac10fc57024
SHA512 52714ca9123046205e52a7e3d2c5abe4114503eafe8ea168f49f4518756c68ffa62b877a3a3a9a0c391d5b415ed83f7d4d953a02b31ebec39892c7962e856846

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 d39cbfca5b4af90e9557d6349d2a68da
SHA1 9322449f3647b82c920e30bbf95f8ce25f875c7a
SHA256 212e7f5ed4a581b4d778dfef226738c6db56b4b4006526259392d03062587887
SHA512 0aea822b94e81d1849d1e9713e019784a474885bfbfa6e88c066098cf2cf145706c33a5fcd00a616530a3414492747bdf68ea953433dfa7780bf0edf6b3f9ee7