Resubmissions

19-11-2022 13:50

221119-q5g7dadg75 10

16-11-2022 22:11

221116-13znrahb4y 10

Analysis

  • max time kernel
    61s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-11-2022 22:11

General

  • Target

    b4d4590a582639275a82f8de43cb470da98af293b3e3d147ae66fd24b793a832.exe

  • Size

    4.0MB

  • MD5

    a0588d88e7ddb01fc9ac9d3b5cf215d8

  • SHA1

    3647f00f21ba2f090d81f07fca5137c4566b4046

  • SHA256

    b4d4590a582639275a82f8de43cb470da98af293b3e3d147ae66fd24b793a832

  • SHA512

    0597a689f1b9c521415835272f123782ce5431c3049be15aa38664e8b288cf29a6715eb47e023e2479bfbba2ee387435ba72b5b7e14801a6c086b59f311df9c6

  • SSDEEP

    98304:WBLaX2XjPrbVGbFWMZNA2wITWuXIu/M1vrGp1oVXL:YLaWrh3WNVwWWuz/M1vqpeXL

Malware Config

Extracted

Family

joker

C2

https://htuzi.oss-cn-shanghai.aliyuncs.com

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 4 IoCs
  • joker

    Joker is an Android malware that targets billing and SMS fraud.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4d4590a582639275a82f8de43cb470da98af293b3e3d147ae66fd24b793a832.exe
    "C:\Users\Admin\AppData\Local\Temp\b4d4590a582639275a82f8de43cb470da98af293b3e3d147ae66fd24b793a832.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Users\Admin\AppData\Local\Temp\tuzi_nsudo\NSudo.exe
      "C:\Users\Admin\AppData\Local\Temp\tuzi_nsudo\NSudo.exe" -U:S "C:\Users\Admin\AppData\Local\Temp\b4d4590a582639275a82f8de43cb470da98af293b3e3d147ae66fd24b793a832.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2904

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tuzi_nsudo\NSudo.exe

    Filesize

    247KB

    MD5

    5cae01aea8ed390ce9bec17b6c1237e4

    SHA1

    3a80a49efaac5d839400e4fb8f803243fb39a513

    SHA256

    19896a23d7b054625c2f6b1ee1551a0da68ad25cddbb24510a3b74578418e618

    SHA512

    c8e54c92133ba686238ea554c1cd82ba441db5fd4b0cbd5082d5eb4ddfcedd15506b9dac553459d0b2221c75778241f926ed3eef64571e4b1e0eb6f80ff9b481

  • C:\Users\Admin\AppData\Local\Temp\tuzi_nsudo\NSudo.json

    Filesize

    211B

    MD5

    922322fab45a284dbb248760125dfb1c

    SHA1

    120e77b90baa85287b2ee5bc63ff7dcd149767b5

    SHA256

    254beac232a7bb20289b0608db5a0ccc69789fb8befe2bf3c76fa09953eea6f5

    SHA512

    899dc404559518e311343a0a71ef4f88e4820268ff821082400660647259594cb1a088359c75b17f4e0df85ea5ad91e49b3e86f636e95955c2c56f1e667f4aaf

  • memory/1960-133-0x0000000000400000-0x0000000001092000-memory.dmp

    Filesize

    12.6MB

  • memory/1960-132-0x0000000000400000-0x0000000001092000-memory.dmp

    Filesize

    12.6MB

  • memory/1960-134-0x0000000000400000-0x0000000001092000-memory.dmp

    Filesize

    12.6MB

  • memory/1960-135-0x0000000000400000-0x0000000001092000-memory.dmp

    Filesize

    12.6MB

  • memory/1960-136-0x0000000010000000-0x00000000100BE000-memory.dmp

    Filesize

    760KB

  • memory/1960-138-0x0000000010000000-0x00000000100BE000-memory.dmp

    Filesize

    760KB

  • memory/1960-140-0x0000000010000000-0x00000000100BE000-memory.dmp

    Filesize

    760KB

  • memory/1960-144-0x0000000000400000-0x0000000001092000-memory.dmp

    Filesize

    12.6MB