Analysis

  • max time kernel
    29s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    10-03-2021 08:36

General

  • Target

    2cad950cc1c4f5c7480a454f61399a36.exe

  • Size

    556KB

  • MD5

    2cad950cc1c4f5c7480a454f61399a36

  • SHA1

    7f4292814783b6f025c6d088235989f58e4481d4

  • SHA256

    52f30ac40ae064c855d2dd8ae61b25884f405dd2b6747aebd592718d75d8aee9

  • SHA512

    ea6b5ee31a24f64228cd98b70615981bbf054a2802390a58de3acd026cb6418729d77932f7206806e961a4b27b123d373ebdf4a15d728b9ee33ab53e1ed8ba9a

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\2cad950cc1c4f5c7480a454f61399a36.exe
    "C:\Users\Admin\AppData\Local\Temp\2cad950cc1c4f5c7480a454f61399a36.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1036
    • C:\Users\Admin\AppData\Roaming\purefoe\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\purefoe\noabu.exe
    MD5

    ae4ac666d4c6073f23e078629ee01bba

    SHA1

    606a6e995b3754ff1494730242cf9fdf65936740

    SHA256

    5d63d1c4eb964d27d53d83b399b38ffad6609b204b8741e5626d4427cc7421af

    SHA512

    19d566f149b780dbd37aaa1ae1d72572bfb078da9f320c6fca04d0ea85b97431263104720910972d332ca94cb2801eef323388ad6a8e76c34d85336ec13426ef

  • \Users\Admin\AppData\Roaming\purefoe\noabu.exe
    MD5

    ae4ac666d4c6073f23e078629ee01bba

    SHA1

    606a6e995b3754ff1494730242cf9fdf65936740

    SHA256

    5d63d1c4eb964d27d53d83b399b38ffad6609b204b8741e5626d4427cc7421af

    SHA512

    19d566f149b780dbd37aaa1ae1d72572bfb078da9f320c6fca04d0ea85b97431263104720910972d332ca94cb2801eef323388ad6a8e76c34d85336ec13426ef

  • memory/1036-3-0x00000000760F1000-0x00000000760F3000-memory.dmp
    Filesize

    8KB

  • memory/1036-4-0x0000000002CE0000-0x0000000002DAF000-memory.dmp
    Filesize

    828KB

  • memory/1036-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1036-2-0x0000000002E30000-0x0000000002E41000-memory.dmp
    Filesize

    68KB

  • memory/1468-6-0x000007FEF7FE0000-0x000007FEF825A000-memory.dmp
    Filesize

    2.5MB

  • memory/1484-14-0x0000000000C20000-0x0000000000C31000-memory.dmp
    Filesize

    68KB

  • memory/1484-12-0x0000000000000000-mapping.dmp
  • memory/1484-15-0x00000000022E0000-0x00000000022F1000-memory.dmp
    Filesize

    68KB

  • memory/1484-16-0x00000000743F0000-0x0000000074ADE000-memory.dmp
    Filesize

    6.9MB

  • memory/1484-18-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1484-17-0x0000000000230000-0x0000000000265000-memory.dmp
    Filesize

    212KB

  • memory/1484-19-0x0000000002360000-0x0000000002388000-memory.dmp
    Filesize

    160KB

  • memory/1484-20-0x0000000002420000-0x0000000002446000-memory.dmp
    Filesize

    152KB

  • memory/1484-22-0x0000000004C42000-0x0000000004C43000-memory.dmp
    Filesize

    4KB

  • memory/1484-21-0x0000000004C41000-0x0000000004C42000-memory.dmp
    Filesize

    4KB

  • memory/1484-23-0x0000000004C43000-0x0000000004C44000-memory.dmp
    Filesize

    4KB

  • memory/1484-26-0x0000000004C44000-0x0000000004C46000-memory.dmp
    Filesize

    8KB