Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-09-2024 10:19

General

  • Target

    639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe

  • Size

    299KB

  • MD5

    929e1c4d7de071ef5aeb9fd2b2e7813e

  • SHA1

    41e4b840c194823726fef12ea987f8d1a8d7591b

  • SHA256

    639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b

  • SHA512

    84c5c1fbb03f64683b48f6e0de9fed851b45f2a9a95ea7149c02b3ba5f7ac7ac6be707c708ff3c473dc125e5588c95ab96bd088c22c487af2681d2e0d75eedcf

  • SSDEEP

    6144:XfH/KjXTSNEfLd7zGHdNXc8w82puOjYZ:PH/KjjSNENzeNXz8pu0Y

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

  • GCleaner

    GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe
    "C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2096
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" & exit
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "639b2741f024e5d2f78170b472c90762680feaebf2473e24e0bf49b54297c25b.exe" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\7CNUR30T\download[1].htm

    Filesize

    1B

    MD5

    cfcd208495d565ef66e7dff9f98764da

    SHA1

    b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

    SHA256

    5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

    SHA512

    31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

  • \Users\Admin\AppData\Local\Temp\50MFCYu98TWaU4Vv\Y-Cleaner.exe

    Filesize

    1.4MB

    MD5

    a8cf5621811f7fac55cfe8cb3fa6b9f6

    SHA1

    121356839e8138a03141f5f5856936a85bd2a474

    SHA256

    614a0362ab87cee48d0935b5bb957d539be1d94c6fdeb3fe42fac4fbe182c10c

    SHA512

    4479d951435f222ca7306774002f030972c9f1715d6aaf512fca9420dd79cb6d08240f80129f213851773290254be34f0ff63c7b1f4d554a7db5f84b69e84bdd

  • memory/2096-8-0x0000000010000000-0x000000001001C000-memory.dmp

    Filesize

    112KB

  • memory/2096-1-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2096-13-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2096-14-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2096-15-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2096-2-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB

  • memory/2096-26-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2096-3-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2096-36-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2096-38-0x0000000000520000-0x0000000000620000-memory.dmp

    Filesize

    1024KB

  • memory/2096-37-0x0000000000400000-0x000000000043F000-memory.dmp

    Filesize

    252KB