Analysis

  • max time kernel
    78s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12-09-2022 19:26

General

  • Target

    file.exe

  • Size

    358KB

  • MD5

    5ca78e4191699df68c9b08460c9f7a2a

  • SHA1

    c419ffa4098ac2b5cd06a71d08bf8360c1e70631

  • SHA256

    6b17d488dbf2b4ca6d6a8f0bd38ef68d006e3a3991b597f9be1cc56728038962

  • SHA512

    3ff62786f59b3796416e4eb13707b3470d57560a45ef79392a15ea0c68f00b80fbf74b6aa06eb03e39738780ec9a4b82cd9327da036e87849bf8d9dd99441eaa

  • SSDEEP

    6144:OlzcfHp87wQqTBguSyR8X6yTULyWFfxZ/j1nO8TYG0bAG+qQ6xT+UhbnKj7BPa+Q:Ol+JNN+uSyKXFTqFfxZ/j1nO8TYG0bAh

Malware Config

Extracted

Family

redline

Botnet

5

C2

79.110.62.196:26277

Attributes
  • auth_value

    febe6965b41d2583ad2bb6b5aa23cfd5

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • 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.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:948
    • C:\Users\Admin\AppData\Local\Temp\Updater.exe
      "C:\Users\Admin\AppData\Local\Temp\Updater.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1504
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
        3⤵
        • Creates scheduled task(s)
        PID:1560
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {F94F8FBB-FB94-41BA-B596-3E780A5E743A} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
        3⤵
        • Creates scheduled task(s)
        PID:432

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Updater.exe
    Filesize

    2.8MB

    MD5

    ecfae3cc8a7ba2e4681a378864658af6

    SHA1

    a84beb327be022f600aed467c2029b4301756dca

    SHA256

    20239b724322bdef1aa4adbdfaa03a90d1f18a5b3b8bcfb16dec10a5823ac0fd

    SHA512

    33ce30cdcfb7b86cdd86e3f9ba7ff97ea168001eca76e0c05f14555a25ce200f2e661b03e8ab762b4a9330bfd794b6366912768a4cce7f88c60c9a2a5717abda

  • C:\Users\Admin\AppData\Local\Temp\Updater.exe
    Filesize

    2.8MB

    MD5

    ecfae3cc8a7ba2e4681a378864658af6

    SHA1

    a84beb327be022f600aed467c2029b4301756dca

    SHA256

    20239b724322bdef1aa4adbdfaa03a90d1f18a5b3b8bcfb16dec10a5823ac0fd

    SHA512

    33ce30cdcfb7b86cdd86e3f9ba7ff97ea168001eca76e0c05f14555a25ce200f2e661b03e8ab762b4a9330bfd794b6366912768a4cce7f88c60c9a2a5717abda

  • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
    Filesize

    2.8MB

    MD5

    ecfae3cc8a7ba2e4681a378864658af6

    SHA1

    a84beb327be022f600aed467c2029b4301756dca

    SHA256

    20239b724322bdef1aa4adbdfaa03a90d1f18a5b3b8bcfb16dec10a5823ac0fd

    SHA512

    33ce30cdcfb7b86cdd86e3f9ba7ff97ea168001eca76e0c05f14555a25ce200f2e661b03e8ab762b4a9330bfd794b6366912768a4cce7f88c60c9a2a5717abda

  • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
    Filesize

    2.8MB

    MD5

    ecfae3cc8a7ba2e4681a378864658af6

    SHA1

    a84beb327be022f600aed467c2029b4301756dca

    SHA256

    20239b724322bdef1aa4adbdfaa03a90d1f18a5b3b8bcfb16dec10a5823ac0fd

    SHA512

    33ce30cdcfb7b86cdd86e3f9ba7ff97ea168001eca76e0c05f14555a25ce200f2e661b03e8ab762b4a9330bfd794b6366912768a4cce7f88c60c9a2a5717abda

  • \Users\Admin\AppData\Local\Temp\Updater.exe
    Filesize

    2.8MB

    MD5

    ecfae3cc8a7ba2e4681a378864658af6

    SHA1

    a84beb327be022f600aed467c2029b4301756dca

    SHA256

    20239b724322bdef1aa4adbdfaa03a90d1f18a5b3b8bcfb16dec10a5823ac0fd

    SHA512

    33ce30cdcfb7b86cdd86e3f9ba7ff97ea168001eca76e0c05f14555a25ce200f2e661b03e8ab762b4a9330bfd794b6366912768a4cce7f88c60c9a2a5717abda

  • memory/432-74-0x0000000000000000-mapping.dmp
  • memory/948-55-0x00000000004E0000-0x00000000004E6000-memory.dmp
    Filesize

    24KB

  • memory/948-54-0x0000000000020000-0x0000000000080000-memory.dmp
    Filesize

    384KB

  • memory/948-56-0x0000000074AB1000-0x0000000074AB3000-memory.dmp
    Filesize

    8KB

  • memory/1504-67-0x0000000076E90000-0x0000000077010000-memory.dmp
    Filesize

    1.5MB

  • memory/1504-65-0x00000000013E0000-0x000000000189C000-memory.dmp
    Filesize

    4.7MB

  • memory/1504-66-0x00000000013E0000-0x000000000189C000-memory.dmp
    Filesize

    4.7MB

  • memory/1504-58-0x0000000000000000-mapping.dmp
  • memory/1504-61-0x00000000013E0000-0x000000000189C000-memory.dmp
    Filesize

    4.7MB

  • memory/1504-62-0x0000000076E90000-0x0000000077010000-memory.dmp
    Filesize

    1.5MB

  • memory/1560-64-0x0000000000000000-mapping.dmp
  • memory/1744-72-0x0000000000E10000-0x00000000012CC000-memory.dmp
    Filesize

    4.7MB

  • memory/1744-73-0x0000000076E90000-0x0000000077010000-memory.dmp
    Filesize

    1.5MB

  • memory/1744-69-0x0000000000000000-mapping.dmp
  • memory/1744-75-0x0000000000E10000-0x00000000012CC000-memory.dmp
    Filesize

    4.7MB

  • memory/1744-76-0x0000000000E10000-0x00000000012CC000-memory.dmp
    Filesize

    4.7MB

  • memory/1744-77-0x0000000076E90000-0x0000000077010000-memory.dmp
    Filesize

    1.5MB

  • memory/1744-78-0x0000000000E10000-0x00000000012CC000-memory.dmp
    Filesize

    4.7MB