Analysis

  • max time kernel
    19s
  • max time network
    21s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    22-02-2021 07:00

General

  • Target

    222afbdd9b3af605454042a0c700e974.exe

  • Size

    621KB

  • MD5

    222afbdd9b3af605454042a0c700e974

  • SHA1

    20a9cbc737bd6fb15b41667c52b19c117a3c8f3c

  • SHA256

    63c9bab720391433d6195ee41da8a049281f5c8e2ea20d074961bf31b93986a0

  • SHA512

    a7b28739487d78debcf13938e6a4cd5591de456daf1e41fadf45b95a86a3c2b7c50cac37028a961bdf905cdf466f43f9ff3792d85fb6987986396c34ccb201f2

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\222afbdd9b3af605454042a0c700e974.exe
    "C:\Users\Admin\AppData\Local\Temp\222afbdd9b3af605454042a0c700e974.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:2028
    • 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:976

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\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/976-14-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/976-18-0x0000000004D22000-0x0000000004D23000-memory.dmp
    Filesize

    4KB

  • memory/976-20-0x0000000004D24000-0x0000000004D26000-memory.dmp
    Filesize

    8KB

  • memory/976-19-0x0000000004D23000-0x0000000004D24000-memory.dmp
    Filesize

    4KB

  • memory/976-8-0x0000000000000000-mapping.dmp
  • memory/976-17-0x0000000004D21000-0x0000000004D22000-memory.dmp
    Filesize

    4KB

  • memory/976-10-0x0000000000C50000-0x0000000000C61000-memory.dmp
    Filesize

    68KB

  • memory/976-11-0x00000000023D0000-0x00000000023E1000-memory.dmp
    Filesize

    68KB

  • memory/976-12-0x0000000074750000-0x0000000074E3E000-memory.dmp
    Filesize

    6.9MB

  • memory/976-13-0x0000000000230000-0x0000000000265000-memory.dmp
    Filesize

    212KB

  • memory/976-16-0x0000000002350000-0x0000000002377000-memory.dmp
    Filesize

    156KB

  • memory/976-15-0x0000000000960000-0x0000000000989000-memory.dmp
    Filesize

    164KB

  • memory/2004-6-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp
    Filesize

    2.5MB

  • memory/2028-2-0x00000000008A0000-0x00000000008B1000-memory.dmp
    Filesize

    68KB

  • memory/2028-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/2028-3-0x0000000075C31000-0x0000000075C33000-memory.dmp
    Filesize

    8KB

  • memory/2028-4-0x00000000008A0000-0x000000000096F000-memory.dmp
    Filesize

    828KB