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Resubmissions

17/10/2023, 14:16

231017-rk8n9scd4t 10

17/10/2023, 14:14

231017-rj57racd3y 10

18/01/2023, 09:10

230118-k42xhadg39 10

Analysis

  • max time kernel
    121s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    18/01/2023, 09:10

General

  • Target

    tmp.exe

  • Size

    798KB

  • MD5

    90aadf2247149996ae443e2c82af3730

  • SHA1

    050b7eba825412b24e3f02d76d7da5ae97e10502

  • SHA256

    ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

  • SHA512

    eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be

  • SSDEEP

    24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN

Malware Config

Signatures

  • FlawedAmmyy RAT

    Remote-access trojan based on leaked code for the Ammyy remote admin software.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    PID:1204
  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe" -service -lunch
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      PID:2036

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\AMMYY\settings3.bin

    Filesize

    327B

    MD5

    2b01cf22aa01a589a15509128d590117

    SHA1

    5811b21161dec9e0c36e1d2205b6b9a30a98bb5a

    SHA256

    07111154c7331970c9214da54a53c9675844cc400f419ae8ee3b8dc4dc7ce798

    SHA512

    64604fbea7ce3be25acca4bba253bd204e35eb522b977ce20cceb0ff651e276c5492e148c17d416a4f531ae89a598da119e32a946c9e1876abfed17d40b08c7d

  • memory/1204-54-0x0000000075C41000-0x0000000075C43000-memory.dmp

    Filesize

    8KB