Analysis

  • max time kernel
    139s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-02-2023 11:22

General

  • Target

    notee.exe

  • Size

    7KB

  • MD5

    d3e184b081ba54e7b5cbd5dc579f4f27

  • SHA1

    b7c61923ed6ac09d1aec3b7ff799548d6b6af1c8

  • SHA256

    902abe7c2f1e7afb139ce47a818b11d9ff9dfe9a46cc9b9afb7d7d53bda6c528

  • SHA512

    a9153828449c0ac2eb0feb465b092168b176f133034732eccfec69d4e0705e8f3acd628314b751ad0eaaff06d0b78784242ecbad1aa26783bb0dba23e95f23ee

  • SSDEEP

    96:Wd7KqtBgjmLYoSrJmAkcPFn9bi/rkA86o00gazFnU:WPwHrJr9nlmAyjbt

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\notee.exe
    "C:\Users\Admin\AppData\Local\Temp\notee.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5056
    • C:\Users\Admin\AppData\Local\Temp\notee.exe
      C:\Users\Admin\AppData\Local\Temp\notee.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4008

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\notee.exe.log
    Filesize

    1KB

    MD5

    3a9188331a78f1dbce606db64b841fcb

    SHA1

    8e2c99b7c477d06591a856a4ea3e1e214719eee8

    SHA256

    db4137e258a0f6159fda559a5f6dd2704be0582c3f0586f65040c7ad1eb68451

    SHA512

    d1a994610a045d89d5d306866c24ae56bf16555414b8f63f632552568e67b5586f26d5a17a1f0a55ada376730298e6d856e9161828d4eae9decfa4e015e0e90a

  • memory/1508-133-0x0000000006500000-0x0000000006522000-memory.dmp
    Filesize

    136KB

  • memory/1508-132-0x0000000000470000-0x0000000000478000-memory.dmp
    Filesize

    32KB

  • memory/4008-142-0x0000000000000000-mapping.dmp
  • memory/4008-148-0x0000000006D60000-0x0000000006DB0000-memory.dmp
    Filesize

    320KB

  • memory/4008-147-0x0000000006C40000-0x0000000006C4A000-memory.dmp
    Filesize

    40KB

  • memory/4008-146-0x0000000006CC0000-0x0000000006D52000-memory.dmp
    Filesize

    584KB

  • memory/4008-145-0x0000000005960000-0x0000000005F04000-memory.dmp
    Filesize

    5.6MB

  • memory/4008-143-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/5056-136-0x00000000053D0000-0x00000000059F8000-memory.dmp
    Filesize

    6.2MB

  • memory/5056-141-0x00000000066F0000-0x000000000670A000-memory.dmp
    Filesize

    104KB

  • memory/5056-140-0x0000000007A60000-0x00000000080DA000-memory.dmp
    Filesize

    6.5MB

  • memory/5056-139-0x00000000061F0000-0x000000000620E000-memory.dmp
    Filesize

    120KB

  • memory/5056-138-0x0000000005B60000-0x0000000005BC6000-memory.dmp
    Filesize

    408KB

  • memory/5056-137-0x0000000005AF0000-0x0000000005B56000-memory.dmp
    Filesize

    408KB

  • memory/5056-135-0x0000000004C10000-0x0000000004C46000-memory.dmp
    Filesize

    216KB

  • memory/5056-134-0x0000000000000000-mapping.dmp