Analysis

  • max time kernel
    87s
  • max time network
    88s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:13

General

  • Target

    OUR_NEW_.exe

  • Size

    757KB

  • MD5

    5eecffe3b62b1e5c080028e6c489cc98

  • SHA1

    3fa94eff0cffe3fcad56d7e7b3dbcbac341211b5

  • SHA256

    571ab77f2e5d3069e9b1974cd7548dd28f4cef875b33698b42a846b6057a476e

  • SHA512

    eb79550f367005386cfc94a674a4c735484df3ff35f038401d5f7995bd0a01eb79d81be3c7b1f4c4b4c6a69dde0a5c28a3e81cd038efc843004310cd2d989cb5

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:26:08 PM MassLogger Started: 5/21/2022 2:25:52 PM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 33 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe
    "C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2012
    • C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe
      "C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:852

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/852-87-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-115-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-578-0x0000000004655000-0x0000000004666000-memory.dmp
    Filesize

    68KB

  • memory/852-57-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-58-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-60-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-83-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-62-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-63-0x00000000004ABEAE-mapping.dmp
  • memory/852-65-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-67-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-69-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-71-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-73-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-75-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-77-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-79-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-576-0x0000000002160000-0x00000000021A4000-memory.dmp
    Filesize

    272KB

  • memory/852-61-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-121-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-81-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-89-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-91-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-93-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-95-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-97-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-99-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-101-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-103-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-105-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-107-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-109-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-111-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-113-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-85-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-117-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/852-119-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/2012-55-0x0000000000520000-0x0000000000528000-memory.dmp
    Filesize

    32KB

  • memory/2012-54-0x0000000000040000-0x0000000000104000-memory.dmp
    Filesize

    784KB

  • memory/2012-56-0x0000000004E70000-0x0000000004F28000-memory.dmp
    Filesize

    736KB