Malware Analysis Report

2024-10-10 10:00

Sample ID 240617-z58trsydnl
Target MM2farm.exe
SHA256 7f3c593c069e2b61afce1a1d7dc5c4f4ed355d361223e6a7c24c6bf2c95b7962
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

7f3c593c069e2b61afce1a1d7dc5c4f4ed355d361223e6a7c24c6bf2c95b7962

Threat Level: Known bad

The file MM2farm.exe was found to be: Known bad.

Malicious Activity Summary

umbral execution spyware stealer

Umbral

Umbral family

Detect Umbral payload

Drops file in Drivers directory

Command and Scripting Interpreter: PowerShell

Deletes itself

Reads user/profile data of web browsers

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Views/modifies file attributes

Suspicious use of WriteProcessMemory

Detects videocard installed

Suspicious behavior: EnumeratesProcesses

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-17 21:19

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

2024-06-17 21:19

Reported

2024-06-17 21:21

Platform

win7-20240419-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MM2farm.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\MM2farm.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\system32\cmd.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\MM2farm.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: 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: 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
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1752 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2348 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\attrib.exe
PID 1752 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\attrib.exe
PID 1752 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\attrib.exe
PID 1752 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2148 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2136 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1696 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1576 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1576 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1576 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 1648 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 628 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1752 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2060 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\System32\Wbem\wmic.exe
PID 1752 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\cmd.exe
PID 1752 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\cmd.exe
PID 1752 wrote to memory of 2512 N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe C:\Windows\system32\cmd.exe
PID 2512 wrote to memory of 1924 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2512 wrote to memory of 1924 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 2512 wrote to memory of 1924 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\MM2farm.exe

"C:\Users\Admin\AppData\Local\Temp\MM2farm.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\MM2farm.exe"

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

"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\MM2farm.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\MM2farm.exe" && pause

C:\Windows\system32\PING.EXE

ping localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 172.217.16.227:443 gstatic.com tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 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

Files

memory/1752-0-0x000007FEF53C3000-0x000007FEF53C4000-memory.dmp

memory/1752-1-0x0000000000D90000-0x0000000000DD0000-memory.dmp

memory/1752-2-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

memory/2148-7-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

memory/2148-8-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 e8c1e2814e95968705a2bfaaa992b326
SHA1 155b7e15b67e673486d6b37c596a52b32796046d
SHA256 d107a3ca1a723e1a18cc33bee4d97a65f2b6d36ab7eed5328f5a43e45123a2b1
SHA512 d6f7bf964be445e89e8f189957e5116671a1ce4e748a0e3b01f9d1b92a76a8847f98d5447e57dbb7d55b7bc9f3b0a87c10759e16f4d4c0b23aad6f0cf2646cac

memory/2700-14-0x000000001B460000-0x000000001B742000-memory.dmp

memory/2700-15-0x0000000002A70000-0x0000000002A78000-memory.dmp

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/628-43-0x0000000001E60000-0x0000000001E68000-memory.dmp

memory/1752-47-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 21:19

Reported

2024-06-17 21:21

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MM2farm.exe"

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MM2farm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\MM2farm.exe

"C:\Users\Admin\AppData\Local\Temp\MM2farm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
US 8.8.8.8:53 gstatic.com udp
US 8.8.8.8:53 gstatic.com udp

Files

memory/232-0-0x000001E346890000-0x000001E3468D0000-memory.dmp

memory/232-1-0x00007FFE30513000-0x00007FFE30515000-memory.dmp

memory/232-2-0x00007FFE30510000-0x00007FFE30FD1000-memory.dmp

memory/232-3-0x00007FFE30510000-0x00007FFE30FD1000-memory.dmp