Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    21-02-2021 19:13

General

  • Target

    c510b5a0ace3f83ca207dd96dcc676d0.exe

  • Size

    690KB

  • MD5

    c510b5a0ace3f83ca207dd96dcc676d0

  • SHA1

    e877c5c8aa0f221b917ea140c6d33bddd86e406e

  • SHA256

    453debcca834d384581837da8253ac5f4e2eaf7fc641407081d1e7cf57bc4266

  • SHA512

    c9872eb23bde88f84bc6d135f5d58a8e01d4f3f6c71029d019eceb145e40b8b05a597dfde413d574440bd7cb5e2f96261f470d60fd73ad47453e179a62f49f2f

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\c510b5a0ace3f83ca207dd96dcc676d0.exe
    "C:\Users\Admin\AppData\Local\Temp\c510b5a0ace3f83ca207dd96dcc676d0.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1152
    • 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

    f556302aa8c3dd96773e666347d9f476

    SHA1

    5290063b66db2064d55d4ee36acae20b2b6a6044

    SHA256

    6fc478619e492f7c687bdff2235a57206f867c0601e22301480202a9c0ceb16b

    SHA512

    82a61676b07373cb885af0c9552020c27a6e0b90bd4c5788319276db4231185b7739eeef6e24b877825722fd67716630c3007bc8c0bcb807555e46b19c151e4d

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

    MD5

    f556302aa8c3dd96773e666347d9f476

    SHA1

    5290063b66db2064d55d4ee36acae20b2b6a6044

    SHA256

    6fc478619e492f7c687bdff2235a57206f867c0601e22301480202a9c0ceb16b

    SHA512

    82a61676b07373cb885af0c9552020c27a6e0b90bd4c5788319276db4231185b7739eeef6e24b877825722fd67716630c3007bc8c0bcb807555e46b19c151e4d

  • memory/268-15-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/268-16-0x0000000004DE1000-0x0000000004DE2000-memory.dmp

    Filesize

    4KB

  • memory/268-20-0x0000000004DE4000-0x0000000004DE6000-memory.dmp

    Filesize

    8KB

  • memory/268-19-0x00000000024B0000-0x00000000024D7000-memory.dmp

    Filesize

    156KB

  • memory/268-8-0x0000000000000000-mapping.dmp

  • memory/268-14-0x00000000002F0000-0x0000000000325000-memory.dmp

    Filesize

    212KB

  • memory/268-10-0x00000000009D0000-0x00000000009E1000-memory.dmp

    Filesize

    68KB

  • memory/268-11-0x00000000022A0000-0x00000000022B1000-memory.dmp

    Filesize

    68KB

  • memory/268-12-0x0000000073BD0000-0x00000000742BE000-memory.dmp

    Filesize

    6.9MB

  • memory/268-13-0x00000000008A0000-0x00000000008C9000-memory.dmp

    Filesize

    164KB

  • memory/268-18-0x0000000004DE3000-0x0000000004DE4000-memory.dmp

    Filesize

    4KB

  • memory/268-17-0x0000000004DE2000-0x0000000004DE3000-memory.dmp

    Filesize

    4KB

  • memory/1152-2-0x0000000000D10000-0x0000000000D21000-memory.dmp

    Filesize

    68KB

  • memory/1152-5-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/1152-3-0x00000000760C1000-0x00000000760C3000-memory.dmp

    Filesize

    8KB

  • memory/1152-4-0x0000000000230000-0x00000000002FF000-memory.dmp

    Filesize

    828KB

  • memory/1444-6-0x000007FEF72E0000-0x000007FEF755A000-memory.dmp

    Filesize

    2.5MB