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Analysis

  • max time kernel
    140s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2025, 02:40

General

  • Target

    2025-03-24_c126134648ccd1408fb868b240d68695_.exe

  • Size

    627KB

  • MD5

    c126134648ccd1408fb868b240d68695

  • SHA1

    693870838334230ea02d0606d253696567b8a669

  • SHA256

    d16e0cf61accda34b867910b529794f438a41231f9c2451f44e3dfdd83721ad3

  • SHA512

    c121a1d0d8940a1e10d7956f2628f28cf13c0d2b332be6b25ac5579ec64eb609e2b1f1dd5be5ee9f03e90a3ea0f9122d2154c16df22255ddf0f5deab23658f66

  • SSDEEP

    12288:GTTEy2R/8MnxERV8bpUt+AC0/KVFBMuwE:GTcRUVKpticFBM8

Malware Config

Extracted

Family

buer

C2

https://bankcreditsign.com/

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Buer family
  • Buer Loader 3 IoCs

    Detects Buer loader in memory or disk.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-03-24_c126134648ccd1408fb868b240d68695_.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-24_c126134648ccd1408fb868b240d68695_.exe"
    1⤵
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\f6adda36d902ce19f526}"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:220

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r015pgh3.54y.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/220-46-0x0000000007050000-0x00000000070E6000-memory.dmp

    Filesize

    600KB

  • memory/220-40-0x0000000006C70000-0x0000000006C8E000-memory.dmp

    Filesize

    120KB

  • memory/220-10-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/220-12-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/220-11-0x0000000004B90000-0x00000000051B8000-memory.dmp

    Filesize

    6.2MB

  • memory/220-54-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/220-13-0x0000000004B60000-0x0000000004B82000-memory.dmp

    Filesize

    136KB

  • memory/220-49-0x0000000007010000-0x0000000007024000-memory.dmp

    Filesize

    80KB

  • memory/220-8-0x00000000744BE000-0x00000000744BF000-memory.dmp

    Filesize

    4KB

  • memory/220-15-0x0000000005350000-0x00000000053B6000-memory.dmp

    Filesize

    408KB

  • memory/220-25-0x0000000005490000-0x00000000057E4000-memory.dmp

    Filesize

    3.3MB

  • memory/220-14-0x0000000005230000-0x0000000005296000-memory.dmp

    Filesize

    408KB

  • memory/220-27-0x0000000005AE0000-0x0000000005B2C000-memory.dmp

    Filesize

    304KB

  • memory/220-26-0x0000000005AA0000-0x0000000005ABE000-memory.dmp

    Filesize

    120KB

  • memory/220-9-0x0000000004490000-0x00000000044C6000-memory.dmp

    Filesize

    216KB

  • memory/220-30-0x00000000702D0000-0x000000007031C000-memory.dmp

    Filesize

    304KB

  • memory/220-42-0x0000000006CA0000-0x0000000006D43000-memory.dmp

    Filesize

    652KB

  • memory/220-41-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/220-29-0x00000000744B0000-0x0000000074C60000-memory.dmp

    Filesize

    7.7MB

  • memory/220-28-0x0000000006080000-0x00000000060B2000-memory.dmp

    Filesize

    200KB

  • memory/220-44-0x0000000006DD0000-0x0000000006DEA000-memory.dmp

    Filesize

    104KB

  • memory/220-43-0x0000000007420000-0x0000000007A9A000-memory.dmp

    Filesize

    6.5MB

  • memory/220-45-0x0000000006E40000-0x0000000006E4A000-memory.dmp

    Filesize

    40KB

  • memory/220-51-0x00000000070F0000-0x00000000070F8000-memory.dmp

    Filesize

    32KB

  • memory/220-47-0x0000000006FD0000-0x0000000006FE1000-memory.dmp

    Filesize

    68KB

  • memory/220-48-0x0000000007000000-0x000000000700E000-memory.dmp

    Filesize

    56KB

  • memory/220-50-0x0000000007110000-0x000000000712A000-memory.dmp

    Filesize

    104KB

  • memory/2948-5-0x0000000040000000-0x000000004005D000-memory.dmp

    Filesize

    372KB

  • memory/2948-0-0x0000000000820000-0x0000000000880000-memory.dmp

    Filesize

    384KB

  • memory/2948-4-0x0000000000770000-0x00000000007CE000-memory.dmp

    Filesize

    376KB

  • memory/2948-55-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB