Analysis

  • max time kernel
    19s
  • max time network
    111s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • 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
  • 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.

  • Program crash 9 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c510b5a0ace3f83ca207dd96dcc676d0.exe
    "C:\Users\Admin\AppData\Local\Temp\c510b5a0ace3f83ca207dd96dcc676d0.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 752
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2988
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 856
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1204
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1568
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:736
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1572
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1964
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1564
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3052
    • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2100
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1624
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3356
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1900
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:2168
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 1872
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3900

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

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

    MD5

    f556302aa8c3dd96773e666347d9f476

    SHA1

    5290063b66db2064d55d4ee36acae20b2b6a6044

    SHA256

    6fc478619e492f7c687bdff2235a57206f867c0601e22301480202a9c0ceb16b

    SHA512

    82a61676b07373cb885af0c9552020c27a6e0b90bd4c5788319276db4231185b7739eeef6e24b877825722fd67716630c3007bc8c0bcb807555e46b19c151e4d

  • memory/492-3-0x0000000000B50000-0x0000000000C1F000-memory.dmp

    Filesize

    828KB

  • memory/492-4-0x0000000000400000-0x00000000004D5000-memory.dmp

    Filesize

    852KB

  • memory/492-2-0x0000000000C80000-0x0000000000C81000-memory.dmp

    Filesize

    4KB

  • memory/736-14-0x0000000004A10000-0x0000000004A11000-memory.dmp

    Filesize

    4KB

  • memory/1964-17-0x0000000004830000-0x0000000004831000-memory.dmp

    Filesize

    4KB

  • memory/2100-34-0x0000000004F93000-0x0000000004F94000-memory.dmp

    Filesize

    4KB

  • memory/2100-38-0x0000000004F92000-0x0000000004F93000-memory.dmp

    Filesize

    4KB

  • memory/2100-25-0x0000000000000000-mapping.dmp

  • memory/2100-60-0x0000000007B20000-0x0000000007B21000-memory.dmp

    Filesize

    4KB

  • memory/2100-59-0x0000000007280000-0x0000000007281000-memory.dmp

    Filesize

    4KB

  • memory/2100-28-0x0000000000C10000-0x0000000000C11000-memory.dmp

    Filesize

    4KB

  • memory/2100-29-0x00000000028D0000-0x00000000028D1000-memory.dmp

    Filesize

    4KB

  • memory/2100-30-0x0000000072430000-0x0000000072B1E000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-31-0x0000000002670000-0x0000000002699000-memory.dmp

    Filesize

    164KB

  • memory/2100-33-0x0000000004FA0000-0x0000000004FA1000-memory.dmp

    Filesize

    4KB

  • memory/2100-32-0x0000000000960000-0x0000000000995000-memory.dmp

    Filesize

    212KB

  • memory/2100-58-0x00000000071D0000-0x00000000071D1000-memory.dmp

    Filesize

    4KB

  • memory/2100-37-0x0000000004F90000-0x0000000004F91000-memory.dmp

    Filesize

    4KB

  • memory/2100-36-0x0000000002850000-0x0000000002877000-memory.dmp

    Filesize

    156KB

  • memory/2100-35-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2100-57-0x0000000006B90000-0x0000000006B91000-memory.dmp

    Filesize

    4KB

  • memory/2100-39-0x0000000004E60000-0x0000000004E61000-memory.dmp

    Filesize

    4KB

  • memory/2100-40-0x00000000029D0000-0x00000000029D1000-memory.dmp

    Filesize

    4KB

  • memory/2100-41-0x00000000054A0000-0x00000000054A1000-memory.dmp

    Filesize

    4KB

  • memory/2100-42-0x0000000005AD0000-0x0000000005AD1000-memory.dmp

    Filesize

    4KB

  • memory/2100-43-0x0000000005AF0000-0x0000000005AF1000-memory.dmp

    Filesize

    4KB

  • memory/2100-44-0x0000000004F94000-0x0000000004F96000-memory.dmp

    Filesize

    8KB

  • memory/2100-45-0x0000000005C60000-0x0000000005C61000-memory.dmp

    Filesize

    4KB

  • memory/2100-56-0x00000000069A0000-0x00000000069A1000-memory.dmp

    Filesize

    4KB

  • memory/2100-49-0x0000000005DE0000-0x0000000005DE1000-memory.dmp

    Filesize

    4KB

  • memory/2168-50-0x0000000004DF0000-0x0000000004DF1000-memory.dmp

    Filesize

    4KB

  • memory/2640-11-0x0000000004930000-0x0000000004931000-memory.dmp

    Filesize

    4KB

  • memory/2988-5-0x0000000004D70000-0x0000000004D71000-memory.dmp

    Filesize

    4KB

  • memory/2988-6-0x0000000004D70000-0x0000000004D71000-memory.dmp

    Filesize

    4KB

  • memory/3356-46-0x0000000004830000-0x0000000004831000-memory.dmp

    Filesize

    4KB

  • memory/3772-8-0x0000000004EA0000-0x0000000004EA1000-memory.dmp

    Filesize

    4KB

  • memory/3900-53-0x0000000004BF0000-0x0000000004BF1000-memory.dmp

    Filesize

    4KB