Analysis

  • max time kernel
    61s
  • max time network
    72s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    20-02-2025 17:47

General

  • Target

    calma.msi

  • Size

    4.6MB

  • MD5

    27708977fc83f3b70177d6cf68900eba

  • SHA1

    f679bb77e2876b17da2276017df6cf252aa5bd22

  • SHA256

    ec3ca0877e599ae9c40cbcec51a9a4718114e33d9e2d9d8c72f5f24d7cebdcbf

  • SHA512

    831ccd1e4fdda16ff7cd16096e3291b9fa986f814e56aec9d8d0c6a36ae402002940a9d9aa7c1c5c8cf1b8e65c2d9ee529956f9cae3832e513a37bff3839c8ac

  • SSDEEP

    98304:HYVK/AKIN29ryVzg+Vho+5d67amiFP/0hnJRZuq2sDSq5Fwfp:G29W5jmih/0xXLFm

Malware Config

Signatures

  • Blocklisted process makes network request 5 IoCs
  • 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 Windows directory 13 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 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 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 10 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\calma.msi
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2508
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Blocklisted process makes network request
    • Enumerates connected drives
    • Drops file in Windows directory
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E9295EB6A5DFC981C7C05752D9DCA4F1
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2496
    • C:\Users\Admin\AppData\Roaming\nvidia\NVIDIA Notification.exe
      "C:\Users\Admin\AppData\Roaming\nvidia\NVIDIA Notification.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1268
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2564
  • C:\Windows\system32\DrvInst.exe
    DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003B8" "00000000000003BC"
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:2916

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Config.Msi\f77d119.rbs

    Filesize

    2KB

    MD5

    da67174a303c5ca7dde55ad82c5c331b

    SHA1

    7ee9014c275285dc7c9626ff78c85ece06fa313a

    SHA256

    f438d88913d6596541897a4a1e133cca3a9381ca421729ea569de6329893cc58

    SHA512

    99405818c6a04a559f31469135017bef6fe1b9f299fd0038f08301b9e16ce4d73c0a7e7cc692eb54e07a52bb260d68ec0191f6e6e5943b319bbd8287b9cbe79b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C5C8CC0A7FE31816B4641D0465402560

    Filesize

    1KB

    MD5

    e94fb54871208c00df70f708ac47085b

    SHA1

    4efc31460c619ecae59c1bce2c008036d94c84b8

    SHA256

    7b9d553e1c92cb6e8803e137f4f287d4363757f5d44b37d52f9fca22fb97df86

    SHA512

    2e15b76e16264abb9f5ef417752a1cbb75f29c11f96ac7d73793172bd0864db65f2d2b7be0f16bbbe686068f0c368815525f1e39db5a0d6ca3ab18be6923b898

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    304ff3be5f7c9a2c82c8b2523654f456

    SHA1

    fb7fabd9ad0914e73befd868804e04d161dcfc51

    SHA256

    435db1d9eac1e71c7f5c5ff49e00f1a7af5246b7820500849e82fba57e7eca65

    SHA512

    f2f5728497aa59cf6690e49d0d03a16cfbb66da91238159cdab01140c53530dae6a986aa899f78d123488e4d8921f4187987277ec83c1c00e4639951dd85dd88

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    36b59815d3d019056fea495dfa6603a6

    SHA1

    b84a5735b21b322bf731e672f3d784350f95b1a1

    SHA256

    69bf8f4876891db9841b8d6e48259495167f738afe0c176c9e1969a02bef8f0c

    SHA512

    82d65c6ed7d3c6d205279866640ddd015601caeb7083dda837584b7c09b4071c8808fb0951ee11823df0e232d68eb7086f7b3fec2c7a2810383ae89008b5cbdf

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C5C8CC0A7FE31816B4641D0465402560

    Filesize

    264B

    MD5

    08967f4dbd5f8a95b7c2cdcfb457c84c

    SHA1

    f1b320392dd6f8c5f0b054df0f9d9ce38bf44823

    SHA256

    1aa7dc7b8434b40a5416e5f32fce838c6992cd48509133927b50eb971f72806c

    SHA512

    190b56545eb7eb64c5a89d7ddfc20a27104d20fb7be1b93d85c837fc59d29fb5c3045255ac317d40b11c452392960fa4467c312d7ab6534b453a26d03c5e1e04

  • C:\Users\Admin\AppData\Local\Temp\CabA833.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\TarA8E2.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Roaming\nvidia\libcef.dll

    Filesize

    3.2MB

    MD5

    c6bb7631c35b6a8fc21077ca49aa8559

    SHA1

    240d2d8e8da0bba108ee831bcc7a17a92d190db2

    SHA256

    6b3854e74a1ec9a70f14d124c9ae8456129c0b5968f3781b95e430940c64fad4

    SHA512

    1cc5f67413727ea12b0ff0c26ef822fe689b15c674ee4bb03789b949879cfd0f84ad76bd8b93db53ef35160c751344134fc36d8bb3995be658ca7c268bdada72

  • C:\Windows\Installer\MSID324.tmp

    Filesize

    436KB

    MD5

    475d20c0ea477a35660e3f67ecf0a1df

    SHA1

    67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

    SHA256

    426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

    SHA512

    99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

  • C:\Windows\Installer\MSID4DA.tmp

    Filesize

    355KB

    MD5

    cac65e61b287555ea0e2a7f1aa0645cc

    SHA1

    0c93bdbfddd7e00ec30c81dbff8f3a1bfaf62519

    SHA256

    57c0d90010d3a476770c8085d2641cbf234b0ca47ec687ca4aabbf4db92df737

    SHA512

    e80076eb7e632e40f8dcb013b854a5825e7a19dd451505aa121a47a110032a1c571cd6d9e3e5aeacdb8f5897cb17ece4e65846b5d9080605e81176fe0811456a

  • \Users\Admin\AppData\Roaming\nvidia\NVIDIA Notification.exe

    Filesize

    3.2MB

    MD5

    07459a0b5f524ad62b5b5401133d4d55

    SHA1

    bcaec0c106f7f97c09618870e0d4868a156c93ec

    SHA256

    6c94c9d7e231523e06b41275ab208e42cdd39278f341123b066b05a0a6830e4d

    SHA512

    5133970b743eaa730e97baf9c4f52c05af469b880cd158900e62447daab45445112b41cc31c330fb90ee1e274d85e444ab86cfffc3e4fea7380d4217c446e9b5

  • memory/1268-195-0x00000003A6450000-0x00000003A649B000-memory.dmp

    Filesize

    300KB