Analysis

  • max time kernel
    20s
  • max time network
    20s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    21-02-2021 18:11

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:1784
    • 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:792

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/792-14-0x0000000073C80000-0x000000007436E000-memory.dmp
    Filesize

    6.9MB

  • memory/792-17-0x0000000004C51000-0x0000000004C52000-memory.dmp
    Filesize

    4KB

  • memory/792-18-0x0000000004C52000-0x0000000004C53000-memory.dmp
    Filesize

    4KB

  • memory/792-20-0x0000000004C54000-0x0000000004C56000-memory.dmp
    Filesize

    8KB

  • memory/792-8-0x0000000000000000-mapping.dmp
  • memory/792-19-0x0000000004C53000-0x0000000004C54000-memory.dmp
    Filesize

    4KB

  • memory/792-10-0x0000000000A10000-0x0000000000A21000-memory.dmp
    Filesize

    68KB

  • memory/792-11-0x0000000002210000-0x0000000002221000-memory.dmp
    Filesize

    68KB

  • memory/792-12-0x00000000003B0000-0x00000000003E5000-memory.dmp
    Filesize

    212KB

  • memory/792-13-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/792-16-0x0000000004B00000-0x0000000004B27000-memory.dmp
    Filesize

    156KB

  • memory/792-15-0x0000000000990000-0x00000000009B9000-memory.dmp
    Filesize

    164KB

  • memory/1548-6-0x000007FEF7510000-0x000007FEF778A000-memory.dmp
    Filesize

    2.5MB

  • memory/1784-2-0x0000000000D10000-0x0000000000D21000-memory.dmp
    Filesize

    68KB

  • memory/1784-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1784-3-0x00000000760D1000-0x00000000760D3000-memory.dmp
    Filesize

    8KB

  • memory/1784-4-0x0000000000230000-0x00000000002FF000-memory.dmp
    Filesize

    828KB