Analysis

  • max time kernel
    25s
  • max time network
    27s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12-02-2021 19:13

General

  • Target

    9504bbd270464fd0a401aac457a5bd3d.exe

  • Size

    654KB

  • MD5

    9504bbd270464fd0a401aac457a5bd3d

  • SHA1

    2382d8c492db27b62539b8d15a377845473c1b7b

  • SHA256

    fc9c54b72323f2492fb6e22ce77628b7af0b349b6cb6030d55d1c40b35199e91

  • SHA512

    935457e8515f740545bccb3857b5a6e8baa8461dcc29a85e2db91a4d4b31cbdefd458fbb1eea22fd4c9ce565fbce522759b2a17d4ac5e694f935143f68524271

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\9504bbd270464fd0a401aac457a5bd3d.exe
    "C:\Users\Admin\AppData\Local\Temp\9504bbd270464fd0a401aac457a5bd3d.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1096
    • 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:268

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/268-16-0x0000000074380000-0x0000000074A6E000-memory.dmp

    Filesize

    6.9MB

  • memory/268-20-0x0000000004921000-0x0000000004922000-memory.dmp

    Filesize

    4KB

  • memory/268-24-0x0000000004924000-0x0000000004926000-memory.dmp

    Filesize

    8KB

  • memory/268-12-0x0000000000000000-mapping.dmp

  • memory/268-23-0x00000000020A0000-0x00000000020CC000-memory.dmp

    Filesize

    176KB

  • memory/268-22-0x0000000004923000-0x0000000004924000-memory.dmp

    Filesize

    4KB

  • memory/268-14-0x0000000001E60000-0x0000000001E71000-memory.dmp

    Filesize

    68KB

  • memory/268-15-0x0000000002000000-0x0000000002011000-memory.dmp

    Filesize

    68KB

  • memory/268-17-0x0000000000260000-0x0000000000297000-memory.dmp

    Filesize

    220KB

  • memory/268-18-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/268-21-0x0000000004922000-0x0000000004923000-memory.dmp

    Filesize

    4KB

  • memory/268-19-0x0000000001FA0000-0x0000000001FCE000-memory.dmp

    Filesize

    184KB

  • memory/296-6-0x000007FEF7AA0000-0x000007FEF7D1A000-memory.dmp

    Filesize

    2.5MB

  • memory/1096-2-0x0000000001F60000-0x0000000001F71000-memory.dmp

    Filesize

    68KB

  • memory/1096-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/1096-3-0x00000000761F1000-0x00000000761F3000-memory.dmp

    Filesize

    8KB

  • memory/1096-4-0x0000000000230000-0x00000000002FF000-memory.dmp

    Filesize

    828KB