Malware Analysis Report

2024-10-10 09:55

Sample ID 240710-ngb94svdlq
Target Fixer1.exe
SHA256 fff5e75a847e42b873cc8af76960e9ef47ff8e2f23055c52af4f304541440cec
Tags
umbral execution spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

fff5e75a847e42b873cc8af76960e9ef47ff8e2f23055c52af4f304541440cec

Threat Level: Known bad

The file Fixer1.exe was found to be: Known bad.

Malicious Activity Summary

umbral execution spyware stealer

Umbral family

Umbral

Detect Umbral payload

Drops file in Drivers directory

Command and Scripting Interpreter: PowerShell

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Unsigned PE

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Views/modifies file attributes

Detects videocard installed

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-10 11:21

Signatures

Detect Umbral payload

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

Umbral family

umbral

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-10 11:21

Reported

2024-07-10 11:22

Platform

win10v2004-20240709-en

Max time kernel

34s

Max time network

35s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Fixer1.exe"

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\Fixer1.exe N/A

Reads user/profile data of web browsers

spyware stealer

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Detects videocard installed

Description Indicator Process Target
N/A N/A C:\Windows\System32\Wbem\wmic.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1780 wrote to memory of 4556 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 4556 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 116 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\SYSTEM32\attrib.exe
PID 1780 wrote to memory of 116 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\SYSTEM32\attrib.exe
PID 1780 wrote to memory of 4544 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 4544 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 220 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 220 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 1072 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 1072 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 1356 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 1644 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 3764 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 3764 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 4472 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1780 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 2624 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\System32\Wbem\wmic.exe
PID 1780 wrote to memory of 4032 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\SYSTEM32\cmd.exe
PID 1780 wrote to memory of 4032 N/A C:\Users\Admin\AppData\Local\Temp\Fixer1.exe C:\Windows\SYSTEM32\cmd.exe
PID 4032 wrote to memory of 3468 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE
PID 4032 wrote to memory of 3468 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\attrib.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Fixer1.exe

"C:\Users\Admin\AppData\Local\Temp\Fixer1.exe"

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" csproduct get uuid

C:\Windows\SYSTEM32\attrib.exe

"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Fixer1.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Fixer1.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" os get Caption

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" computersystem get totalphysicalmemory

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" csproduct get uuid

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER

C:\Windows\System32\Wbem\wmic.exe

"wmic" path win32_VideoController get name

C:\Windows\SYSTEM32\cmd.exe

"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Fixer1.exe" && pause

C:\Windows\system32\PING.EXE

ping localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 142.250.200.3:443 gstatic.com tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 3.200.250.142.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 19.53.126.40.in-addr.arpa udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 discord.com udp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 232.138.159.162.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/1780-0-0x000001EF6C750000-0x000001EF6C790000-memory.dmp

memory/1780-1-0x00007FF94FCB3000-0x00007FF94FCB5000-memory.dmp

memory/1780-2-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp

memory/4544-3-0x000001BA6E2E0000-0x000001BA6E302000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fx2dphcy.tup.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4544-13-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp

memory/4544-14-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp

memory/4544-15-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp

memory/4544-17-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

memory/1780-31-0x000001EF6EF50000-0x000001EF6EFC6000-memory.dmp

memory/1780-32-0x000001EF6ED50000-0x000001EF6EDA0000-memory.dmp

memory/1780-33-0x000001EF6EDA0000-0x000001EF6EDBE000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 28ef595a6cc9f47b8eccb22d4ed50d6c
SHA1 4335de707324b15eba79017938c3da2752d3eea5
SHA256 3abd14d4fe7b5697b2fa84993e7183f4fd2580be5b4e5150da15ddda5a9560b9
SHA512 687b7849faa62a4dabc240b573afa163f0cda9a80be61cebe28ef1461777744d73b465ac92d065093228068540846e79c899445057f5b906f9b9fa9868132208

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

memory/1780-69-0x000001EF6E3F0000-0x000001EF6E3FA000-memory.dmp

memory/1780-70-0x000001EF6EED0000-0x000001EF6EEE2000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 288f76eb6350b99897bf8a40a26d7b88
SHA1 7f386d05202de2cf090bbda84d633a640730e090
SHA256 1b9a2714ecfaf4b2e7d7961d5f2537ea360ad0df46a0fa789255235b077075d1
SHA512 ffafc9d47140408afba98a9832433c0829ba696524c56d03f4ce67ae84d369c658d3a0b3cbfc62f8e5d83fc91f8f73fc1dd9a27f0deaefd1d07485a63face869

memory/1780-88-0x00007FF94FCB0000-0x00007FF950771000-memory.dmp