Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12-02-2021 19:16

General

  • Target

    6257af2ce3336b7fa6debe8614c9ab81.exe

  • Size

    655KB

  • MD5

    6257af2ce3336b7fa6debe8614c9ab81

  • SHA1

    0eed0a8362f934887b3dd05bdc4498c5576a1216

  • SHA256

    4b6db0ab009cf8babc3d2f5390b8dba1ae7367c24cb0988dd96d04a4b25a2b4a

  • SHA512

    57edde7c5ff6ac7a90372270a164d5805f78804238dfb253d9d13624115904f1aeffe09f65bbb527920ff4375fad5952a19c08aaf907f3c4ad8e8adbf090dee5

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\6257af2ce3336b7fa6debe8614c9ab81.exe
    "C:\Users\Admin\AppData\Local\Temp\6257af2ce3336b7fa6debe8614c9ab81.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1596
    • 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:1660

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    b193f6ad44a0e3a55782e365ad1b0082

    SHA1

    a3187be12fe673b70640096db4a62a52923a5dbb

    SHA256

    1ad35ecffd662312ffa048ae8b85344267ebdd6d5c3be375c99b84c57d3ef117

    SHA512

    59722aafb85543225a17743cefaec55128813569cf898554ce8b9ef818a3eba564248184e656db4d7333a5923e6c5bed56da6eb6626ecc31a9d66dbb0b2a4820

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

    MD5

    b193f6ad44a0e3a55782e365ad1b0082

    SHA1

    a3187be12fe673b70640096db4a62a52923a5dbb

    SHA256

    1ad35ecffd662312ffa048ae8b85344267ebdd6d5c3be375c99b84c57d3ef117

    SHA512

    59722aafb85543225a17743cefaec55128813569cf898554ce8b9ef818a3eba564248184e656db4d7333a5923e6c5bed56da6eb6626ecc31a9d66dbb0b2a4820

  • memory/1440-6-0x000007FEF6100000-0x000007FEF637A000-memory.dmp

    Filesize

    2.5MB

  • memory/1596-3-0x0000000075781000-0x0000000075783000-memory.dmp

    Filesize

    8KB

  • memory/1596-4-0x0000000000240000-0x000000000030F000-memory.dmp

    Filesize

    828KB

  • memory/1596-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/1596-2-0x0000000001E50000-0x0000000001E61000-memory.dmp

    Filesize

    68KB

  • memory/1660-10-0x0000000001BC0000-0x0000000001BD1000-memory.dmp

    Filesize

    68KB

  • memory/1660-8-0x0000000000000000-mapping.dmp

  • memory/1660-11-0x0000000001DE0000-0x0000000001DF1000-memory.dmp

    Filesize

    68KB

  • memory/1660-12-0x0000000073CC0000-0x00000000743AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1660-13-0x0000000001BC0000-0x0000000001BF7000-memory.dmp

    Filesize

    220KB

  • memory/1660-14-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1660-15-0x00000000020F0000-0x000000000211E000-memory.dmp

    Filesize

    184KB

  • memory/1660-16-0x0000000004750000-0x000000000477C000-memory.dmp

    Filesize

    176KB

  • memory/1660-17-0x0000000004871000-0x0000000004872000-memory.dmp

    Filesize

    4KB

  • memory/1660-18-0x0000000004872000-0x0000000004873000-memory.dmp

    Filesize

    4KB

  • memory/1660-19-0x0000000004873000-0x0000000004874000-memory.dmp

    Filesize

    4KB

  • memory/1660-20-0x0000000004874000-0x0000000004876000-memory.dmp

    Filesize

    8KB