Analysis

  • max time kernel
    34s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 21:04

General

  • Target

    a8ecd9161a2e9ef78c0ee9a7e21bc6192a05f604cc3ed28dff37aa5e55139497.exe

  • Size

    3.4MB

  • MD5

    1bb36790fc3bb01ae5ca8f1617efd326

  • SHA1

    7fcf4d38b2cee92eecb584c159629bca99a767e2

  • SHA256

    a8ecd9161a2e9ef78c0ee9a7e21bc6192a05f604cc3ed28dff37aa5e55139497

  • SHA512

    f145b2d8089dbfb7e80158bc489782d1069800076af12000bc7eb2ddb9e24ce91cf48603b4bfb17bc72899214d016ee7806c8b4fd75e7dec50cd741341dfde40

  • SSDEEP

    49152:Dgod0gwbgYXIq3Bdr1XHqbhwKL9zYH7ppgkkhOuWh5Dj4Gctc2Q:DRwYqTRKbhh9zbkcCDv

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 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.

  • Drops Chrome extension 3 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a8ecd9161a2e9ef78c0ee9a7e21bc6192a05f604cc3ed28dff37aa5e55139497.exe
    "C:\Users\Admin\AppData\Local\Temp\a8ecd9161a2e9ef78c0ee9a7e21bc6192a05f604cc3ed28dff37aa5e55139497.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1256
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1412

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

3
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.dat
    Filesize

    3KB

    MD5

    94f0018bd6673924fc3af74be528df02

    SHA1

    8bd28eeafcd7e273fe767a189b0b7a10f8a5a9f0

    SHA256

    d2b6f88ddecec1b7f43086f05f8fccb8c3dfdc92a5a2f23582778b1f41f09a99

    SHA512

    bba6f2730629f8b6faabe4a4d38d5636256424b770901fb4427c8038b49645ba4d36b94a9ec3b46190953787a0850c4c8ed86c8e0f410d9c05bf804589938846

  • C:\Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.tlb
    Filesize

    3KB

    MD5

    2fb1c1eb5048d6fd38f4012d609109e6

    SHA1

    63f5b13d95c02777173b0965636be74919203d9c

    SHA256

    e3a8dc57eb1cda0375305b0619b248f96d4e72c6df558c33e77fb722614b3d9a

    SHA512

    48f8acedd840ea26d0bf6a420cc4a04fb5dc4ebf015a9f229f09e25c4c19133d7526b2c92c9a48ce0d7a1c3441c039a6d07d0b8846f5adcf164b14cba73c0b7e

  • C:\Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.x64.dll
    Filesize

    701KB

    MD5

    e6a1f26110707cd5fbd0137aafeb6f0b

    SHA1

    d87d543eb7a21b77b84038dfa8af7c475bacaf95

    SHA256

    d6823b453891672bcecaf16037750aa3974ea53dc3f7f11c7f2206972bf3642b

    SHA512

    775cd961ef763c53191bf7debe67e9d47fdf51cb22e6d651088966b9f2125ae837a355a1af431aacc0967ddf4c2fe0ec62f9b618d5b921ddf3fbf41e1a64127b

  • \Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.dll
    Filesize

    621KB

    MD5

    987d45a8cfdee8e3311d4a212a4babdb

    SHA1

    62281d5463d25e4155b84365713d18a8c5f06941

    SHA256

    09faf6d30c6d3b29c585439e2b384ef78ecae32a98740148f79e6b9fed1cf3e0

    SHA512

    330c19896a7dcc5361b9fb10d86d6d60cbe838f4f2bcca6dfdf5dba17c5e1b0bba19a0c7293776d25060da968ec32a64521432b267570cff0a65bcf61baaefd7

  • \Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.x64.dll
    Filesize

    701KB

    MD5

    e6a1f26110707cd5fbd0137aafeb6f0b

    SHA1

    d87d543eb7a21b77b84038dfa8af7c475bacaf95

    SHA256

    d6823b453891672bcecaf16037750aa3974ea53dc3f7f11c7f2206972bf3642b

    SHA512

    775cd961ef763c53191bf7debe67e9d47fdf51cb22e6d651088966b9f2125ae837a355a1af431aacc0967ddf4c2fe0ec62f9b618d5b921ddf3fbf41e1a64127b

  • \Program Files (x86)\TinyWallet\SMBPHwNp3QtsjN.x64.dll
    Filesize

    701KB

    MD5

    e6a1f26110707cd5fbd0137aafeb6f0b

    SHA1

    d87d543eb7a21b77b84038dfa8af7c475bacaf95

    SHA256

    d6823b453891672bcecaf16037750aa3974ea53dc3f7f11c7f2206972bf3642b

    SHA512

    775cd961ef763c53191bf7debe67e9d47fdf51cb22e6d651088966b9f2125ae837a355a1af431aacc0967ddf4c2fe0ec62f9b618d5b921ddf3fbf41e1a64127b

  • memory/1256-54-0x0000000075C61000-0x0000000075C63000-memory.dmp
    Filesize

    8KB

  • memory/1256-55-0x0000000002710000-0x00000000027B2000-memory.dmp
    Filesize

    648KB

  • memory/1412-65-0x0000000000000000-mapping.dmp
  • memory/1412-66-0x000007FEFB5B1000-0x000007FEFB5B3000-memory.dmp
    Filesize

    8KB

  • memory/1812-61-0x0000000000000000-mapping.dmp