Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2024 11:36

General

  • Target

    chrrmesetup.msi

  • Size

    27.8MB

  • MD5

    60b6321a22e3cfcecc3c1c68295cc868

  • SHA1

    808a316ee3b0f4fc7bce63358ff4f744e628465b

  • SHA256

    df41ebd057040524d137711938752fef32872f8a3ed2f4ee10e6b7c05d7f4410

  • SHA512

    b4047e9ef64bf63933143d289ce88b11107d552d37ef2905c3139e414bc8a61f86f49b548ee2e8978d0d02f5acfdc407640def7d05a9bcaffacfcebd5d872b91

  • SSDEEP

    786432:NURQ1YYLOtsId3pQof4c0RtYhGYrCw45alNJFOF:N2U9XeI8bwal8

Malware Config

Signatures

  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 11 IoCs
  • Drops file in Windows directory 10 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 10 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 46 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\chrrmesetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2132
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding F3A7BA5327DB27D43891C05751C0B6C4 M Global\MSI0000
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:800
      • C:\Program Files\DeployEngineerCalm\RVMrLdYYerZH.exe
        "C:\Program Files\DeployEngineerCalm\RVMrLdYYerZH.exe" x "C:\Program Files\DeployEngineerCalm\MSjpGFGbYdhVKRljAaZT" -o"C:\Program Files\DeployEngineerCalm\" -pCVtfwrfwUvBoTLjcdFbD -y
        3⤵
        • Drops file in Program Files directory
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1652
      • C:\Program Files\DeployEngineerCalm\gafcETxyYz4.exe
        "C:\Program Files\DeployEngineerCalm\gafcETxyYz4.exe" -number 250 -file file3 -mode mode3 -flag flag3
        3⤵
        • Drops file in Program Files directory
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1000
      • C:\Program Files\DeployEngineerCalm\ChromeSetup.exe
        "C:\Program Files\DeployEngineerCalm\ChromeSetup.exe"
        3⤵
        • Executes dropped EXE
        PID:1904
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2852
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003A8" "00000000000003BC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:1048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\f772b56.rbs

    Filesize

    7KB

    MD5

    380ce9672acb3e31e9d9236ede1d1dbf

    SHA1

    f8e85159cc56e2e0a395c429dca303da9dabe245

    SHA256

    42ce4a3e70abdc1ec29473f9e4a273204b395aa7cc9b670e3a8a52e772717e9a

    SHA512

    44d5d71a0718536640421f6754412d8c16580d18eaab94b2460dc5236e6ca7ed4997d4eb040b08501e15de042b654987018e59b17277ebf9164c7f7541887b84

  • C:\Program Files\DeployEngineerCalm\ChromeSetup.exe

    Filesize

    8.5MB

    MD5

    5adff4313fbd074df44b4eb5b7893c5e

    SHA1

    d27388ef6cf34d40e0e7666f6381fcc5bbafa0f7

    SHA256

    d0c7a4390bdd6b442b96fc76f8a38f7b756ba2c16752ea259844420161865cae

    SHA512

    f5d639922b91878cf83d97563288a3aa4cba94db3ad5e8ac11d24ef7c44b019383a4414aeba6171b4c7bfa83ea1eafc1231cc9233e3b82b5ca7dc0b3ffacbf60

  • C:\Program Files\DeployEngineerCalm\MSjpGFGbYdhVKRljAaZT

    Filesize

    1.9MB

    MD5

    af02d33c55b6178318bf59b6f26b3b5d

    SHA1

    80d56ade2e9f52347d5aa7be46bcf970a93cd689

    SHA256

    c135cb4f3c7b7f480499187109dde41281a1e8f29259fae95893ee53d744f1da

    SHA512

    8d86f7de37c3e22dd5223cf3bd6140f58ff57019ad1560c43ffaff17a83ee181b64fbe210b77ed6548e0125c412bb2a9912f5aa04344e01d53454fd5bfcd6d6a

  • C:\Program Files\DeployEngineerCalm\RVMrLdYYerZH.exe

    Filesize

    574KB

    MD5

    42badc1d2f03a8b1e4875740d3d49336

    SHA1

    cee178da1fb05f99af7a3547093122893bd1eb46

    SHA256

    c136b1467d669a725478a6110ebaaab3cb88a3d389dfa688e06173c066b76fcf

    SHA512

    6bc519a7368ee6bd8c8f69f2d634dd18799b4ca31fbc284d2580ba625f3a88b6a52d2bc17bea0e75e63ca11c10356c47ee00c2c500294abcb5141424fc5dc71c

  • C:\Program Files\DeployEngineerCalm\gafcETxyYz4.exe

    Filesize

    3.2MB

    MD5

    61c267c568496d0621a0107c0fecb047

    SHA1

    d1d02d62bfcb4ea245fd54eb1507150d2d344284

    SHA256

    f7db71cf62374b28b0b635a1fbedb5524d84773ff14ea9a579f0d45ca945a059

    SHA512

    5e6cd5c304c5e7effd58c4eb08a4b71236d0697b6cf6e4b82c5ab980daeb3b9e7691915d7b086dd4f9dbefe49a45c3036a9f91f520be516e4872d4bd8cfe3983

  • C:\Program Files\DeployEngineerCalm\xFVbVZKWVCwS.exe

    Filesize

    832KB

    MD5

    d305d506c0095df8af223ac7d91ca327

    SHA1

    679cb4c763c84e75ccb0fa3475bd6b7a36e81c4a

    SHA256

    923111c7142b3dc783a3c722b19b8a21bcb78222d7a136ac33f0ca8a29f4cb66

    SHA512

    94d369a4db88bff9556a1d7a7fb0188ed935c3592bae09335542c5502ec878e839177be63ac3ab4af75d4dc38a3a4f5d0fd423115ac72cf5dd710c59604db796

  • C:\Windows\Installer\f772b54.msi

    Filesize

    27.8MB

    MD5

    60b6321a22e3cfcecc3c1c68295cc868

    SHA1

    808a316ee3b0f4fc7bce63358ff4f744e628465b

    SHA256

    df41ebd057040524d137711938752fef32872f8a3ed2f4ee10e6b7c05d7f4410

    SHA512

    b4047e9ef64bf63933143d289ce88b11107d552d37ef2905c3139e414bc8a61f86f49b548ee2e8978d0d02f5acfdc407640def7d05a9bcaffacfcebd5d872b91

  • memory/800-12-0x00000000001E0000-0x00000000001E2000-memory.dmp

    Filesize

    8KB

  • memory/1000-42-0x0000000002140000-0x000000000216A000-memory.dmp

    Filesize

    168KB