Analysis

  • max time kernel
    91s
  • max time network
    92s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-03-2021 12:11

General

  • Target

    7047d8264ad838ace204f5f7bea52997.exe

  • Size

    638KB

  • MD5

    7047d8264ad838ace204f5f7bea52997

  • SHA1

    8e9d01a01df42efb5f3e62c8dda214e85cb0b91d

  • SHA256

    6c82ad6d2ac4bc7ca366d3a79bdaf96256352205ad6d645fe31ee98a1dfb1a8b

  • SHA512

    4a2198d82f2ad61a2ff61a225fb1cd1edb8bb70ec5dd2df0f7666e56b69e8dfed7fbb8b27c9fa8f2e9d4f07268a7cd57cf66d32bd1ca031f0f1e6ad915171069

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\7047d8264ad838ace204f5f7bea52997.exe
    "C:\Users\Admin\AppData\Local\Temp\7047d8264ad838ace204f5f7bea52997.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1964
    • 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:1860

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

    f0c59fbbb0be1b5a014398b96f56610d

    SHA1

    d843ef4911f12d0022f7ec5913511ac43e87f786

    SHA256

    7ad0f14d763cfe8710a7bce6ccd3bb6589d059142d2662800f2b4f81e3cf2737

    SHA512

    1240500a04fb33bbb92472806515e94d03fb451d57e6dc9ecd3df3ec46a77027e5fd60b923fc60d681cc084c9a0545f8e343b479f8177bfd00a4a755be9cc944

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

    f0c59fbbb0be1b5a014398b96f56610d

    SHA1

    d843ef4911f12d0022f7ec5913511ac43e87f786

    SHA256

    7ad0f14d763cfe8710a7bce6ccd3bb6589d059142d2662800f2b4f81e3cf2737

    SHA512

    1240500a04fb33bbb92472806515e94d03fb451d57e6dc9ecd3df3ec46a77027e5fd60b923fc60d681cc084c9a0545f8e343b479f8177bfd00a4a755be9cc944

  • memory/652-6-0x000007FEF5E90000-0x000007FEF610A000-memory.dmp
    Filesize

    2.5MB

  • memory/1860-10-0x0000000002F80000-0x0000000002F91000-memory.dmp
    Filesize

    68KB

  • memory/1860-13-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1860-20-0x0000000007004000-0x0000000007006000-memory.dmp
    Filesize

    8KB

  • memory/1860-19-0x0000000007003000-0x0000000007004000-memory.dmp
    Filesize

    4KB

  • memory/1860-8-0x0000000000000000-mapping.dmp
  • memory/1860-17-0x0000000007001000-0x0000000007002000-memory.dmp
    Filesize

    4KB

  • memory/1860-11-0x00000000046C0000-0x00000000046D1000-memory.dmp
    Filesize

    68KB

  • memory/1860-18-0x0000000007002000-0x0000000007003000-memory.dmp
    Filesize

    4KB

  • memory/1860-12-0x0000000000260000-0x0000000000295000-memory.dmp
    Filesize

    212KB

  • memory/1860-14-0x0000000073A70000-0x000000007415E000-memory.dmp
    Filesize

    6.9MB

  • memory/1860-15-0x0000000002CA0000-0x0000000002CC8000-memory.dmp
    Filesize

    160KB

  • memory/1860-16-0x0000000004700000-0x0000000004726000-memory.dmp
    Filesize

    152KB

  • memory/1964-4-0x0000000002DC0000-0x0000000002E8F000-memory.dmp
    Filesize

    828KB

  • memory/1964-2-0x0000000002DC0000-0x0000000002DD1000-memory.dmp
    Filesize

    68KB

  • memory/1964-3-0x0000000075ED1000-0x0000000075ED3000-memory.dmp
    Filesize

    8KB

  • memory/1964-5-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB