Analysis

  • max time kernel
    21s
  • max time network
    70s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25-02-2021 13:28

General

  • Target

    341d379b7c8ff365eafcf79d31056edb.exe

  • Size

    651KB

  • MD5

    341d379b7c8ff365eafcf79d31056edb

  • SHA1

    81eac8a9f7dd36790cbe6740d21b57a75cdfdf45

  • SHA256

    411c2e9854cd5405b206312a9645021c81b8ae0d1ed8c2752e67b17fd075a4d1

  • SHA512

    0e635cf196eb7f966c4698064754a444563c9629de36e438f79edc5691645643da135560b9732d2b4ccdcc8fb926b1ecb541bfc1bdc3d451a69549ba450f3df9

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
  • 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.

  • Program crash 8 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\341d379b7c8ff365eafcf79d31056edb.exe
    "C:\Users\Admin\AppData\Local\Temp\341d379b7c8ff365eafcf79d31056edb.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1152
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 752
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2832
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 840
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2808
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1204
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3280
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1564
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3716
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1552
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:812
    • C:\Users\Admin\AppData\Roaming\paperships\noabu.exe
      noabu.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2324
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1600
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3816
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1904
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3784
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 1528
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:2792

Network

MITRE ATT&CK Matrix ATT&CK v6

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

    bdfdca6660e6fe6cabe4dcc397154975

    SHA1

    6e7130d78356acb749f11b60e10244ea9ba267a2

    SHA256

    3a77d697b35b9de741ac611c904aca942a17d4ac8f786f4f9b9532dec277a8f6

    SHA512

    f7dc745eecfa2f8df6fa54bd1c98333e3c27123dd02bdcc91f9e96950393169a906d611d260a6863b36f22e6fa00c9fdabdd6e2bd24e7aaed50d265b19e03327

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

    bdfdca6660e6fe6cabe4dcc397154975

    SHA1

    6e7130d78356acb749f11b60e10244ea9ba267a2

    SHA256

    3a77d697b35b9de741ac611c904aca942a17d4ac8f786f4f9b9532dec277a8f6

    SHA512

    f7dc745eecfa2f8df6fa54bd1c98333e3c27123dd02bdcc91f9e96950393169a906d611d260a6863b36f22e6fa00c9fdabdd6e2bd24e7aaed50d265b19e03327

  • memory/812-17-0x00000000048B0000-0x00000000048B1000-memory.dmp
    Filesize

    4KB

  • memory/1152-3-0x0000000000AA0000-0x0000000000B6F000-memory.dmp
    Filesize

    828KB

  • memory/1152-4-0x0000000000400000-0x00000000004D5000-memory.dmp
    Filesize

    852KB

  • memory/1152-2-0x0000000000BA0000-0x0000000000BA1000-memory.dmp
    Filesize

    4KB

  • memory/2324-35-0x0000000000AB0000-0x0000000000AE5000-memory.dmp
    Filesize

    212KB

  • memory/2324-40-0x0000000004E50000-0x0000000004E51000-memory.dmp
    Filesize

    4KB

  • memory/2324-55-0x0000000007AA0000-0x0000000007AA1000-memory.dmp
    Filesize

    4KB

  • memory/2324-20-0x0000000000000000-mapping.dmp
  • memory/2324-54-0x0000000007270000-0x0000000007271000-memory.dmp
    Filesize

    4KB

  • memory/2324-53-0x00000000071C0000-0x00000000071C1000-memory.dmp
    Filesize

    4KB

  • memory/2324-52-0x0000000006B80000-0x0000000006B81000-memory.dmp
    Filesize

    4KB

  • memory/2324-51-0x0000000006990000-0x0000000006991000-memory.dmp
    Filesize

    4KB

  • memory/2324-50-0x0000000005DD0000-0x0000000005DD1000-memory.dmp
    Filesize

    4KB

  • memory/2324-32-0x0000000001050000-0x0000000001051000-memory.dmp
    Filesize

    4KB

  • memory/2324-33-0x0000000002930000-0x0000000002931000-memory.dmp
    Filesize

    4KB

  • memory/2324-34-0x0000000071CB0000-0x000000007239E000-memory.dmp
    Filesize

    6.9MB

  • memory/2324-49-0x0000000005C50000-0x0000000005C51000-memory.dmp
    Filesize

    4KB

  • memory/2324-36-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2324-37-0x00000000026B0000-0x00000000026D9000-memory.dmp
    Filesize

    164KB

  • memory/2324-38-0x0000000004F60000-0x0000000004F61000-memory.dmp
    Filesize

    4KB

  • memory/2324-39-0x00000000028A0000-0x00000000028C7000-memory.dmp
    Filesize

    156KB

  • memory/2324-48-0x0000000004F54000-0x0000000004F56000-memory.dmp
    Filesize

    8KB

  • memory/2324-41-0x0000000002900000-0x0000000002901000-memory.dmp
    Filesize

    4KB

  • memory/2324-42-0x0000000005460000-0x0000000005461000-memory.dmp
    Filesize

    4KB

  • memory/2324-43-0x0000000005AC0000-0x0000000005AC1000-memory.dmp
    Filesize

    4KB

  • memory/2324-44-0x0000000005AE0000-0x0000000005AE1000-memory.dmp
    Filesize

    4KB

  • memory/2324-45-0x0000000004F50000-0x0000000004F51000-memory.dmp
    Filesize

    4KB

  • memory/2324-46-0x0000000004F52000-0x0000000004F53000-memory.dmp
    Filesize

    4KB

  • memory/2324-47-0x0000000004F53000-0x0000000004F54000-memory.dmp
    Filesize

    4KB

  • memory/2792-29-0x00000000043A0000-0x00000000043A1000-memory.dmp
    Filesize

    4KB

  • memory/2808-8-0x0000000004AD0000-0x0000000004AD1000-memory.dmp
    Filesize

    4KB

  • memory/2832-5-0x00000000043A0000-0x00000000043A1000-memory.dmp
    Filesize

    4KB

  • memory/2832-6-0x00000000043A0000-0x00000000043A1000-memory.dmp
    Filesize

    4KB

  • memory/3280-11-0x00000000043A0000-0x00000000043A1000-memory.dmp
    Filesize

    4KB

  • memory/3716-14-0x0000000004A00000-0x0000000004A01000-memory.dmp
    Filesize

    4KB

  • memory/3784-26-0x0000000004720000-0x0000000004721000-memory.dmp
    Filesize

    4KB

  • memory/3816-23-0x00000000048F0000-0x00000000048F1000-memory.dmp
    Filesize

    4KB