Analysis

  • max time kernel
    20s
  • max time network
    21s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19-02-2021 10:15

General

  • Target

    5db5a16993b705815172eae6473b3708.exe

  • Size

    530KB

  • MD5

    5db5a16993b705815172eae6473b3708

  • SHA1

    162a85d7d1491547e3455ab742e994c77e74f1c7

  • SHA256

    0c0f298ef912b9bcd172a997fd89829b4917e91e92dfbda6135b16a0464229e6

  • SHA512

    b0f185174103607ff3d253fc7ffa22250248d9096613d56f9a6317cb317023aacfa6fa0abd474ef9956cc2fbe47252873b40f87d421a4190fe1b3795bc181bf8

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\5db5a16993b705815172eae6473b3708.exe
    "C:\Users\Admin\AppData\Local\Temp\5db5a16993b705815172eae6473b3708.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1684
    • 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:1460

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

    edf5924ecc6f37c1bcea5a1b4c3378be

    SHA1

    936ef778a6d8a6f5fbd5a50c5eb08cea58a846ce

    SHA256

    fa8288121fc03ad692564b12fa8483fe51f4086910d748db2be43eebb6a67de2

    SHA512

    9bec4280c9ce85db81cac7794aa68be8ac49793c2f65f4629eb5d6fd4d4f8e0558dfc016d74c9c6f589b3a1bee5f6bc6c951977cb7f613520bc6b4a6d91aaee9

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

    edf5924ecc6f37c1bcea5a1b4c3378be

    SHA1

    936ef778a6d8a6f5fbd5a50c5eb08cea58a846ce

    SHA256

    fa8288121fc03ad692564b12fa8483fe51f4086910d748db2be43eebb6a67de2

    SHA512

    9bec4280c9ce85db81cac7794aa68be8ac49793c2f65f4629eb5d6fd4d4f8e0558dfc016d74c9c6f589b3a1bee5f6bc6c951977cb7f613520bc6b4a6d91aaee9

  • memory/1448-6-0x000007FEF68D0000-0x000007FEF6B4A000-memory.dmp
    Filesize

    2.5MB

  • memory/1460-10-0x0000000000AE0000-0x0000000000AF1000-memory.dmp
    Filesize

    68KB

  • memory/1460-16-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1460-20-0x0000000004D64000-0x0000000004D66000-memory.dmp
    Filesize

    8KB

  • memory/1460-8-0x0000000000000000-mapping.dmp
  • memory/1460-18-0x0000000004D62000-0x0000000004D63000-memory.dmp
    Filesize

    4KB

  • memory/1460-19-0x0000000004D63000-0x0000000004D64000-memory.dmp
    Filesize

    4KB

  • memory/1460-11-0x00000000023A0000-0x00000000023B1000-memory.dmp
    Filesize

    68KB

  • memory/1460-12-0x00000000744F0000-0x0000000074BDE000-memory.dmp
    Filesize

    6.9MB

  • memory/1460-13-0x0000000000990000-0x00000000009B9000-memory.dmp
    Filesize

    164KB

  • memory/1460-14-0x00000000024C0000-0x00000000024E7000-memory.dmp
    Filesize

    156KB

  • memory/1460-17-0x0000000004D61000-0x0000000004D62000-memory.dmp
    Filesize

    4KB

  • memory/1460-15-0x0000000000230000-0x0000000000265000-memory.dmp
    Filesize

    212KB

  • memory/1684-4-0x00000000008E0000-0x00000000009AF000-memory.dmp
    Filesize

    828KB

  • memory/1684-2-0x00000000009E0000-0x00000000009F1000-memory.dmp
    Filesize

    68KB

  • memory/1684-3-0x00000000756A1000-0x00000000756A3000-memory.dmp
    Filesize

    8KB

  • memory/1684-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB