Analysis

  • max time kernel
    26s
  • max time network
    25s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    21-02-2021 19:14

General

  • Target

    e071a3625768f69ca1a294391a58184a.exe

  • Size

    660KB

  • MD5

    e071a3625768f69ca1a294391a58184a

  • SHA1

    88b49df41d5d5555758c660da1c013a03ebd06d3

  • SHA256

    ec51c1a42099d2ebcb00e68608346ac14013c57f5a87713f6ab41b17c305b537

  • SHA512

    be4ae33c033967e852cfdf5cb5e86683f6da86c8b01be9e7e72a258ec100aaf7661e5aff3575ceb1535b50abde352f187735dc7c021d8d0212f41b67979588f2

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\e071a3625768f69ca1a294391a58184a.exe
    "C:\Users\Admin\AppData\Local\Temp\e071a3625768f69ca1a294391a58184a.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:384
    • 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:332

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    f556302aa8c3dd96773e666347d9f476

    SHA1

    5290063b66db2064d55d4ee36acae20b2b6a6044

    SHA256

    6fc478619e492f7c687bdff2235a57206f867c0601e22301480202a9c0ceb16b

    SHA512

    82a61676b07373cb885af0c9552020c27a6e0b90bd4c5788319276db4231185b7739eeef6e24b877825722fd67716630c3007bc8c0bcb807555e46b19c151e4d

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

    MD5

    f556302aa8c3dd96773e666347d9f476

    SHA1

    5290063b66db2064d55d4ee36acae20b2b6a6044

    SHA256

    6fc478619e492f7c687bdff2235a57206f867c0601e22301480202a9c0ceb16b

    SHA512

    82a61676b07373cb885af0c9552020c27a6e0b90bd4c5788319276db4231185b7739eeef6e24b877825722fd67716630c3007bc8c0bcb807555e46b19c151e4d

  • memory/332-14-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/332-18-0x0000000004C62000-0x0000000004C63000-memory.dmp

    Filesize

    4KB

  • memory/332-20-0x0000000004C64000-0x0000000004C66000-memory.dmp

    Filesize

    8KB

  • memory/332-19-0x0000000004C63000-0x0000000004C64000-memory.dmp

    Filesize

    4KB

  • memory/332-8-0x0000000000000000-mapping.dmp

  • memory/332-17-0x0000000004C61000-0x0000000004C62000-memory.dmp

    Filesize

    4KB

  • memory/332-10-0x0000000000A00000-0x0000000000A11000-memory.dmp

    Filesize

    68KB

  • memory/332-11-0x0000000002380000-0x0000000002391000-memory.dmp

    Filesize

    68KB

  • memory/332-12-0x0000000073C00000-0x00000000742EE000-memory.dmp

    Filesize

    6.9MB

  • memory/332-13-0x00000000002E0000-0x0000000000315000-memory.dmp

    Filesize

    212KB

  • memory/332-16-0x0000000002580000-0x00000000025A7000-memory.dmp

    Filesize

    156KB

  • memory/332-15-0x0000000000B90000-0x0000000000BB9000-memory.dmp

    Filesize

    164KB

  • memory/384-2-0x0000000000A30000-0x0000000000A41000-memory.dmp

    Filesize

    68KB

  • memory/384-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/384-3-0x0000000076241000-0x0000000076243000-memory.dmp

    Filesize

    8KB

  • memory/384-4-0x0000000000910000-0x00000000009DF000-memory.dmp

    Filesize

    828KB

  • memory/1196-6-0x000007FEF7300000-0x000007FEF757A000-memory.dmp

    Filesize

    2.5MB