Analysis

  • max time kernel
    26s
  • max time network
    25s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19-02-2021 07:53

General

  • Target

    5568305d237c162f48e7760523f7fb0c.exe

  • Size

    622KB

  • MD5

    5568305d237c162f48e7760523f7fb0c

  • SHA1

    219426a35291132f9206a2bf3976a8f81a52fed6

  • SHA256

    b479768bf30303be4d80d2ec21ea1a5cb116307e7c637a562b28c019acd515fa

  • SHA512

    b02b72929c3a1d753e7d60cc099296cc5dc60cb71f5dfd41ec7c29f39ff58acf06fae05b14bf2a9a70f30763292a00b01602680af10f0f25442bfa1126805415

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5568305d237c162f48e7760523f7fb0c.exe
    "C:\Users\Admin\AppData\Local\Temp\5568305d237c162f48e7760523f7fb0c.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:892

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
    MD5

    edf5924ecc6f37c1bcea5a1b4c3378be

    SHA1

    936ef778a6d8a6f5fbd5a50c5eb08cea58a846ce

    SHA256

    fa8288121fc03ad692564b12fa8483fe51f4086910d748db2be43eebb6a67de2

    SHA512

    9bec4280c9ce85db81cac7794aa68be8ac49793c2f65f4629eb5d6fd4d4f8e0558dfc016d74c9c6f589b3a1bee5f6bc6c951977cb7f613520bc6b4a6d91aaee9

  • \Users\Admin\AppData\Roaming\paperships\noabu.exe
    MD5

    edf5924ecc6f37c1bcea5a1b4c3378be

    SHA1

    936ef778a6d8a6f5fbd5a50c5eb08cea58a846ce

    SHA256

    fa8288121fc03ad692564b12fa8483fe51f4086910d748db2be43eebb6a67de2

    SHA512

    9bec4280c9ce85db81cac7794aa68be8ac49793c2f65f4629eb5d6fd4d4f8e0558dfc016d74c9c6f589b3a1bee5f6bc6c951977cb7f613520bc6b4a6d91aaee9

  • memory/892-15-0x0000000073870000-0x0000000073F5E000-memory.dmp
    Filesize

    6.9MB

  • memory/892-18-0x0000000002830000-0x0000000002857000-memory.dmp
    Filesize

    156KB

  • memory/892-21-0x0000000004D24000-0x0000000004D26000-memory.dmp
    Filesize

    8KB

  • memory/892-19-0x0000000004D22000-0x0000000004D23000-memory.dmp
    Filesize

    4KB

  • memory/892-9-0x0000000000000000-mapping.dmp
  • memory/892-20-0x0000000004D23000-0x0000000004D24000-memory.dmp
    Filesize

    4KB

  • memory/892-11-0x0000000000D30000-0x0000000000D41000-memory.dmp
    Filesize

    68KB

  • memory/892-12-0x0000000002420000-0x0000000002431000-memory.dmp
    Filesize

    68KB

  • memory/892-13-0x0000000000230000-0x0000000000265000-memory.dmp
    Filesize

    212KB

  • memory/892-14-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/892-17-0x0000000004D21000-0x0000000004D22000-memory.dmp
    Filesize

    4KB

  • memory/892-16-0x00000000025A0000-0x00000000025C9000-memory.dmp
    Filesize

    164KB

  • memory/1648-2-0x0000000000E10000-0x0000000000E21000-memory.dmp
    Filesize

    68KB

  • memory/1648-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1648-3-0x0000000074D11000-0x0000000074D13000-memory.dmp
    Filesize

    8KB

  • memory/1648-4-0x0000000000230000-0x00000000002FF000-memory.dmp
    Filesize

    828KB

  • memory/1792-7-0x000007FEF6F80000-0x000007FEF71FA000-memory.dmp
    Filesize

    2.5MB