Analysis

  • max time kernel
    5s
  • max time network
    10s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    06-05-2021 10:38

General

  • Target

    b2e6c392636248c2705ac3a23a6fafbc8e5c1897.exe

  • Size

    205KB

  • MD5

    8c2d96abda99516a36f04f6a504bf79e

  • SHA1

    b2e6c392636248c2705ac3a23a6fafbc8e5c1897

  • SHA256

    a0b018fb2193eec4f61de14d4d60b1cae8ba46b2cabfc704d59ac6d134dbf4e5

  • SHA512

    f1223ff5e2c800b049600264a6fa69293dc7c404697a506da7cfa29e1977b8ce97860c164b46e9840d89dba69defafa9930b7af76e0a6617691bf5bc1e4e3144

Score
10/10

Malware Config

Extracted

Family

xloader

Version

2.3

C2

http://www.onyxcomputing.com/u8nw/

Decoy

constructionjadams.com

organicwellnessfarm.com

beautiful.tours

medvows.com

foxparanormal.com

fsmxmc.com

graniterealestategroup.net

qgi1.com

astrologicsolutions.com

rafbar.com

bastiontools.net

emotist.com

stacyleets.com

bloodtypealpha.com

healtybenenfitsplus.com

vavadadoa3.com

chefbenhk.com

dotgz.com

xn--z4qm188e645c.com

ethyi.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Xloader Payload 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2e6c392636248c2705ac3a23a6fafbc8e5c1897.exe
    "C:\Users\Admin\AppData\Local\Temp\b2e6c392636248c2705ac3a23a6fafbc8e5c1897.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Users\Admin\AppData\Local\Temp\b2e6c392636248c2705ac3a23a6fafbc8e5c1897.exe
      "C:\Users\Admin\AppData\Local\Temp\b2e6c392636248c2705ac3a23a6fafbc8e5c1897.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1092

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsn9992.tmp\ijjn4rmb.dll
    MD5

    b8d5ccc0769f2b46d120f58366a70748

    SHA1

    e18714d1745d50244f38d1d5450fb0dc138e4a9a

    SHA256

    5e31e46243351c07b44e1ab234751d077675afa3b9ace2467bffb5d83001efbd

    SHA512

    9ce576c9ffbe2eb355e553a1396bbf3e6d929cacf4c77429db1b090eff526da6c12438f8fde33787d745775fb149f9d3921785d3b9b4ed26d9835198ef063e2c

  • memory/1080-60-0x0000000075D11000-0x0000000075D13000-memory.dmp
    Filesize

    8KB

  • memory/1080-63-0x00000000003F0000-0x00000000003F2000-memory.dmp
    Filesize

    8KB

  • memory/1092-62-0x000000000041D0C0-mapping.dmp
  • memory/1092-64-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB

  • memory/1092-65-0x0000000000700000-0x0000000000A03000-memory.dmp
    Filesize

    3.0MB