Analysis

  • max time kernel
    24s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    25-02-2021 13:28

General

  • Target

    341d379b7c8ff365eafcf79d31056edb.exe

  • Size

    651KB

  • MD5

    341d379b7c8ff365eafcf79d31056edb

  • SHA1

    81eac8a9f7dd36790cbe6740d21b57a75cdfdf45

  • SHA256

    411c2e9854cd5405b206312a9645021c81b8ae0d1ed8c2752e67b17fd075a4d1

  • SHA512

    0e635cf196eb7f966c4698064754a444563c9629de36e438f79edc5691645643da135560b9732d2b4ccdcc8fb926b1ecb541bfc1bdc3d451a69549ba450f3df9

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\341d379b7c8ff365eafcf79d31056edb.exe
    "C:\Users\Admin\AppData\Local\Temp\341d379b7c8ff365eafcf79d31056edb.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:844
    • 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:1444

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    bdfdca6660e6fe6cabe4dcc397154975

    SHA1

    6e7130d78356acb749f11b60e10244ea9ba267a2

    SHA256

    3a77d697b35b9de741ac611c904aca942a17d4ac8f786f4f9b9532dec277a8f6

    SHA512

    f7dc745eecfa2f8df6fa54bd1c98333e3c27123dd02bdcc91f9e96950393169a906d611d260a6863b36f22e6fa00c9fdabdd6e2bd24e7aaed50d265b19e03327

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

    MD5

    bdfdca6660e6fe6cabe4dcc397154975

    SHA1

    6e7130d78356acb749f11b60e10244ea9ba267a2

    SHA256

    3a77d697b35b9de741ac611c904aca942a17d4ac8f786f4f9b9532dec277a8f6

    SHA512

    f7dc745eecfa2f8df6fa54bd1c98333e3c27123dd02bdcc91f9e96950393169a906d611d260a6863b36f22e6fa00c9fdabdd6e2bd24e7aaed50d265b19e03327

  • memory/824-7-0x000007FEF81B0000-0x000007FEF842A000-memory.dmp

    Filesize

    2.5MB

  • memory/844-3-0x00000000761E1000-0x00000000761E3000-memory.dmp

    Filesize

    8KB

  • memory/844-4-0x0000000000910000-0x00000000009DF000-memory.dmp

    Filesize

    828KB

  • memory/844-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/844-2-0x0000000000AD0000-0x0000000000AE1000-memory.dmp

    Filesize

    68KB

  • memory/1444-11-0x0000000000AC0000-0x0000000000AD1000-memory.dmp

    Filesize

    68KB

  • memory/1444-9-0x0000000000000000-mapping.dmp

  • memory/1444-12-0x0000000002350000-0x0000000002361000-memory.dmp

    Filesize

    68KB

  • memory/1444-13-0x0000000073CC0000-0x00000000743AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1444-14-0x0000000000980000-0x00000000009A9000-memory.dmp

    Filesize

    164KB

  • memory/1444-15-0x0000000000230000-0x0000000000265000-memory.dmp

    Filesize

    212KB

  • memory/1444-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1444-17-0x0000000004BF1000-0x0000000004BF2000-memory.dmp

    Filesize

    4KB

  • memory/1444-18-0x0000000004BF2000-0x0000000004BF3000-memory.dmp

    Filesize

    4KB

  • memory/1444-19-0x0000000004BF3000-0x0000000004BF4000-memory.dmp

    Filesize

    4KB

  • memory/1444-20-0x00000000025F0000-0x0000000002617000-memory.dmp

    Filesize

    156KB

  • memory/1444-21-0x0000000004BF4000-0x0000000004BF6000-memory.dmp

    Filesize

    8KB