Analysis

  • max time kernel
    19s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    21-02-2021 18:11

General

  • Target

    e071a3625768f69ca1a294391a58184a.exe

  • Size

    660KB

  • MD5

    e071a3625768f69ca1a294391a58184a

  • SHA1

    88b49df41d5d5555758c660da1c013a03ebd06d3

  • SHA256

    ec51c1a42099d2ebcb00e68608346ac14013c57f5a87713f6ab41b17c305b537

  • SHA512

    be4ae33c033967e852cfdf5cb5e86683f6da86c8b01be9e7e72a258ec100aaf7661e5aff3575ceb1535b50abde352f187735dc7c021d8d0212f41b67979588f2

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\e071a3625768f69ca1a294391a58184a.exe
    "C:\Users\Admin\AppData\Local\Temp\e071a3625768f69ca1a294391a58184a.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1904
    • 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:576

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/576-14-0x00000000003A0000-0x00000000003D5000-memory.dmp
    Filesize

    212KB

  • memory/576-17-0x0000000004AF0000-0x0000000004B17000-memory.dmp
    Filesize

    156KB

  • memory/576-20-0x0000000004C74000-0x0000000004C76000-memory.dmp
    Filesize

    8KB

  • memory/576-18-0x0000000004C72000-0x0000000004C73000-memory.dmp
    Filesize

    4KB

  • memory/576-8-0x0000000000000000-mapping.dmp
  • memory/576-19-0x0000000004C73000-0x0000000004C74000-memory.dmp
    Filesize

    4KB

  • memory/576-10-0x0000000000AC0000-0x0000000000AD1000-memory.dmp
    Filesize

    68KB

  • memory/576-11-0x00000000023A0000-0x00000000023B1000-memory.dmp
    Filesize

    68KB

  • memory/576-12-0x0000000074020000-0x000000007470E000-memory.dmp
    Filesize

    6.9MB

  • memory/576-13-0x00000000023E0000-0x0000000002409000-memory.dmp
    Filesize

    164KB

  • memory/576-16-0x0000000004C71000-0x0000000004C72000-memory.dmp
    Filesize

    4KB

  • memory/576-15-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1668-6-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp
    Filesize

    2.5MB

  • memory/1904-2-0x0000000000AF0000-0x0000000000B01000-memory.dmp
    Filesize

    68KB

  • memory/1904-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1904-3-0x00000000766F1000-0x00000000766F3000-memory.dmp
    Filesize

    8KB

  • memory/1904-4-0x00000000008A0000-0x000000000096F000-memory.dmp
    Filesize

    828KB