Analysis

  • max time kernel
    95s
  • max time network
    127s
  • 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 14:12

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

    Using powershell.exe command.

  • 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:4512
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4420
    • 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:3164
    • 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:4728
    • 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:3528
    • 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:4988
    • 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:2692
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3112
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1168
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4600
    • 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:1856
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      2⤵
      • System Location Discovery: System Language Discovery
      • Detects videocard installed
      PID:4544
    • 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:3448
      • 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:3388

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

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    819dff1999b962540a772883f64db88a

    SHA1

    7669a17f01b55f50e0f94d75d91797f3115aa576

    SHA256

    04e494159a0b0a2a4fd767bc3750dc2de7f5cebfbd8ee346dbe8bf16218a3cc0

    SHA512

    8b243adc49e6fc44361f80f72403b680278d61b493747acf90157357205791ae0c51ba3ffa87c9e1a3128a7655bee1b32825082f581b942d7c6a80a2f7c11fc2

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

    Filesize

    17KB

    MD5

    33b1eb4fa270d7f0104e6f5fcbedb97e

    SHA1

    85a57e5cb2a0e3b2df2a2d1c540ae4601e5c3052

    SHA256

    f8da57d5c870829e6986e8de5cdf38d071552bdb27703c64d415db73db85d7a7

    SHA512

    375bb1b506d6845f2a0b0173374ba49e5060fb16d719e129647c5d2984d62929360247d63dbd282ba4caf8b348d822d19e2e37339902622ccf5111f754be1ad5

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

    Filesize

    18KB

    MD5

    2691a687e5529c64301641d26be92bca

    SHA1

    a8977b08af4f5c9670140b25d8de7420402ec1ec

    SHA256

    4f781e8bb5e496f6f409371b2d1345a94b7fdaef57ab401910fd3a76cd1a8a7d

    SHA512

    745b6ecd820c8aae9349b3023bf2e1c97b79ad0d0f6b38eeca10a18b591c00e5516f6936c8734a401ebd1d1d0dd6488232f313811c0dd6b4dbe38a50d17747ef

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

    Filesize

    15KB

    MD5

    4c8464fbb04c5fe727645b4ac72fc3b7

    SHA1

    9612a782fcf76307bc4914e9581cdd5c2275adee

    SHA256

    d4e6c4fd7ee5f0a775f2457dc7d52153c4f6b1e6230aede3233849fc5f838252

    SHA512

    4d1e3ba85f25dcf8d701c8d8f14cfd53c4c0399813717fc40901b098d18c903d0751c867e99cbdb53c48b8fd9b061cd4144b0ab4b0881acc9cc532b9ab8eb5e9

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qpszcor3.eum.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1856-124-0x00000000062A0000-0x00000000065F4000-memory.dmp

    Filesize

    3.3MB

  • memory/1856-126-0x00000000069E0000-0x0000000006A2C000-memory.dmp

    Filesize

    304KB

  • memory/2692-106-0x0000000005F60000-0x00000000062B4000-memory.dmp

    Filesize

    3.3MB

  • memory/3528-54-0x0000000005620000-0x0000000005974000-memory.dmp

    Filesize

    3.3MB

  • memory/4512-3-0x0000000006460000-0x00000000064F2000-memory.dmp

    Filesize

    584KB

  • memory/4512-111-0x0000000009130000-0x0000000009142000-memory.dmp

    Filesize

    72KB

  • memory/4512-0-0x00000000006B0000-0x0000000000B20000-memory.dmp

    Filesize

    4.4MB

  • memory/4512-4-0x0000000006AB0000-0x0000000007054000-memory.dmp

    Filesize

    5.6MB

  • memory/4512-110-0x0000000008180000-0x000000000818A000-memory.dmp

    Filesize

    40KB

  • memory/4512-133-0x00000000006B0000-0x0000000000B20000-memory.dmp

    Filesize

    4.4MB

  • memory/4512-5-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4512-2-0x00000000006B0000-0x0000000000B20000-memory.dmp

    Filesize

    4.4MB

  • memory/4512-70-0x00000000081B0000-0x00000000081CE000-memory.dmp

    Filesize

    120KB

  • memory/4512-68-0x0000000007F60000-0x0000000007FD6000-memory.dmp

    Filesize

    472KB

  • memory/4512-69-0x0000000008130000-0x0000000008180000-memory.dmp

    Filesize

    320KB

  • memory/4512-1-0x00000000742FE000-0x00000000742FF000-memory.dmp

    Filesize

    4KB

  • memory/4512-134-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-10-0x0000000006060000-0x0000000006082000-memory.dmp

    Filesize

    136KB

  • memory/4728-28-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-42-0x0000000007C10000-0x0000000007C2A000-memory.dmp

    Filesize

    104KB

  • memory/4728-43-0x0000000007C80000-0x0000000007C8A000-memory.dmp

    Filesize

    40KB

  • memory/4728-44-0x0000000007E90000-0x0000000007F26000-memory.dmp

    Filesize

    600KB

  • memory/4728-45-0x0000000007E10000-0x0000000007E21000-memory.dmp

    Filesize

    68KB

  • memory/4728-46-0x0000000007E40000-0x0000000007E4E000-memory.dmp

    Filesize

    56KB

  • memory/4728-47-0x0000000007E50000-0x0000000007E64000-memory.dmp

    Filesize

    80KB

  • memory/4728-48-0x0000000007F50000-0x0000000007F6A000-memory.dmp

    Filesize

    104KB

  • memory/4728-49-0x0000000007F30000-0x0000000007F38000-memory.dmp

    Filesize

    32KB

  • memory/4728-52-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-40-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-39-0x0000000007AD0000-0x0000000007B73000-memory.dmp

    Filesize

    652KB

  • memory/4728-38-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-37-0x0000000007AB0000-0x0000000007ACE000-memory.dmp

    Filesize

    120KB

  • memory/4728-41-0x0000000008250000-0x00000000088CA000-memory.dmp

    Filesize

    6.5MB

  • memory/4728-26-0x0000000070190000-0x00000000701DC000-memory.dmp

    Filesize

    304KB

  • memory/4728-6-0x0000000005360000-0x0000000005396000-memory.dmp

    Filesize

    216KB

  • memory/4728-25-0x0000000006EB0000-0x0000000006EE2000-memory.dmp

    Filesize

    200KB

  • memory/4728-7-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4728-8-0x00000000059D0000-0x0000000005FF8000-memory.dmp

    Filesize

    6.2MB

  • memory/4728-24-0x0000000006900000-0x000000000694C000-memory.dmp

    Filesize

    304KB

  • memory/4728-23-0x00000000068D0000-0x00000000068EE000-memory.dmp

    Filesize

    120KB

  • memory/4728-22-0x00000000062E0000-0x0000000006634000-memory.dmp

    Filesize

    3.3MB

  • memory/4728-12-0x0000000006270000-0x00000000062D6000-memory.dmp

    Filesize

    408KB

  • memory/4728-11-0x0000000006200000-0x0000000006266000-memory.dmp

    Filesize

    408KB

  • memory/4728-9-0x00000000742F0000-0x0000000074AA0000-memory.dmp

    Filesize

    7.7MB

  • memory/4988-95-0x0000000006C50000-0x0000000006C72000-memory.dmp

    Filesize

    136KB

  • memory/4988-94-0x00000000067C0000-0x000000000680C000-memory.dmp

    Filesize

    304KB

  • memory/4988-92-0x0000000006370000-0x00000000066C4000-memory.dmp

    Filesize

    3.3MB