Malware Analysis Report

2024-10-10 10:03

Sample ID 240511-yprpwaeg2w
Target Pookies Bypasser.exe
SHA256 23d243e1536abc2db4f5fd8253b7cbe8b02ef16e49ffca91c7776e748d676f39
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

23d243e1536abc2db4f5fd8253b7cbe8b02ef16e49ffca91c7776e748d676f39

Threat Level: Known bad

The file Pookies Bypasser.exe was found to be: Known bad.

Malicious Activity Summary

umbral execution spyware stealer

Detect Umbral payload

Umbral family

Umbral

Command and Scripting Interpreter: PowerShell

Drops file in Drivers directory

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

Suspicious use of WriteProcessMemory

Views/modifies file attributes

Suspicious behavior: EnumeratesProcesses

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

Detects videocard installed

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-11 19:57

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

2024-05-11 19:57

Reported

2024-05-11 20:30

Platform

win10v2004-20240508-en

Max time kernel

1778s

Max time network

1168s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.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\Pookies Bypasser.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\Pookies Bypasser.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 840 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 2584 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 4752 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\SYSTEM32\attrib.exe
PID 840 wrote to memory of 4752 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\SYSTEM32\attrib.exe
PID 840 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 2420 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4248 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4248 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4000 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 4504 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 3568 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 3568 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 1476 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 2776 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 2776 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 840 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 4664 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\System32\Wbem\wmic.exe
PID 840 wrote to memory of 3656 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\SYSTEM32\cmd.exe
PID 840 wrote to memory of 3656 N/A C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.exe C:\Windows\SYSTEM32\cmd.exe
PID 3656 wrote to memory of 412 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE
PID 3656 wrote to memory of 412 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\Pookies Bypasser.exe

"C:\Users\Admin\AppData\Local\Temp\Pookies Bypasser.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\Pookies Bypasser.exe"

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

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

C:\Windows\system32\PING.EXE

ping localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 216.58.201.99:443 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 99.201.58.216.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 208.95.112.1:80 ip-api.com tcp
NL 23.62.61.89:443 www.bing.com tcp
US 8.8.8.8:53 discord.com udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 89.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 233.128.159.162.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/840-0-0x00007FF96DF73000-0x00007FF96DF75000-memory.dmp

memory/840-1-0x000001F8FC260000-0x000001F8FC2A0000-memory.dmp

memory/840-2-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

memory/2420-8-0x0000027746B20000-0x0000027746B42000-memory.dmp

memory/2420-10-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tjqkj1ih.vwx.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2420-14-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

memory/2420-15-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

memory/2420-18-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

memory/840-33-0x000001F8FE9C0000-0x000001F8FEA36000-memory.dmp

memory/840-34-0x000001F8FEA40000-0x000001F8FEA90000-memory.dmp

memory/840-35-0x000001F8FEAB0000-0x000001F8FEACE000-memory.dmp

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

MD5 1a58f982c18490e622e00d4eb75ace5a
SHA1 60c30527b74659ecf09089a5a7c02a1df9a71b65
SHA256 4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d
SHA512 ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

MD5 276798eeb29a49dc6e199768bc9c2e71
SHA1 5fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256 cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA512 0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

memory/840-71-0x000001F8FE820000-0x000001F8FE82A000-memory.dmp

memory/840-72-0x000001F8FE850000-0x000001F8FE862000-memory.dmp

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

MD5 82b8238e742ea60ccfd8de8f9641ee75
SHA1 82442dc3909743c6da5ba2ddbb8b466de933915a
SHA256 8e5a14b70ae648735499c2fd443e8541c0f1d652d35bc877d12b33f12ab6e7b8
SHA512 2896e0744c2349053f2af959d50d1c7d6dbb42a9b5845a5a571098661998f53c6540bd3179fd817268b46501e62854a3bc80d2a2078c128e72ce18f1f95b7317

memory/840-90-0x000001F8FEC50000-0x000001F8FEDF9000-memory.dmp

memory/840-91-0x00007FF96DF70000-0x00007FF96EA31000-memory.dmp