Analysis

  • max time kernel
    138s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    15-02-2021 10:17

General

  • Target

    FC33.exe

  • Size

    19KB

  • MD5

    5898d001eedb60a637f9334965e241a9

  • SHA1

    59d543084a8230ac387dee45b027c47282256d02

  • SHA256

    08eb269d6c3bfaf4d3cde53a987e0adc96a171235d3c34e3c6e9422920e793dd

  • SHA512

    d8be87bddd9f289597221d864370dfdd1ea94d2910837e211f34eec0fee56477672d98bd0565059389ff6d9ac79002f0ffa792feb84db02b18f432c6174e71e0

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 2 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FC33.exe
    "C:\Users\Admin\AppData\Local\Temp\FC33.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe
      "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe"
      2⤵
      • Executes dropped EXE
      PID:1196
    • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe
      "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1312

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe

    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe

    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • \Users\Admin\AppData\Local\Google\Chrome\User Data\Default\chrome.exe

    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • memory/1096-3-0x0000000000820000-0x0000000000821000-memory.dmp

    Filesize

    4KB

  • memory/1096-2-0x0000000074580000-0x0000000074C6E000-memory.dmp

    Filesize

    6.9MB

  • memory/1096-5-0x0000000075301000-0x0000000075303000-memory.dmp

    Filesize

    8KB

  • memory/1096-6-0x0000000004510000-0x0000000004511000-memory.dmp

    Filesize

    4KB

  • memory/1312-12-0x0000000001F40000-0x0000000001F51000-memory.dmp

    Filesize

    68KB

  • memory/1312-9-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1312-10-0x000000000040CD2F-mapping.dmp

  • memory/1312-13-0x0000000074580000-0x0000000074C6E000-memory.dmp

    Filesize

    6.9MB

  • memory/1312-14-0x0000000000400000-0x0000000000435000-memory.dmp

    Filesize

    212KB

  • memory/1312-15-0x00000000001F0000-0x0000000000214000-memory.dmp

    Filesize

    144KB

  • memory/1312-16-0x0000000000440000-0x0000000000462000-memory.dmp

    Filesize

    136KB

  • memory/1312-17-0x0000000004981000-0x0000000004982000-memory.dmp

    Filesize

    4KB

  • memory/1312-18-0x0000000004982000-0x0000000004983000-memory.dmp

    Filesize

    4KB

  • memory/1312-19-0x0000000004983000-0x0000000004984000-memory.dmp

    Filesize

    4KB

  • memory/1312-20-0x0000000004984000-0x0000000004986000-memory.dmp

    Filesize

    8KB