Analysis

  • max time kernel
    150s
  • max time network
    52s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 15:01

General

  • Target

    05749f070af05abf81f45e602fcdbef4_JaffaCakes118.exe

  • Size

    3.1MB

  • MD5

    05749f070af05abf81f45e602fcdbef4

  • SHA1

    5e3f92fa742f32a9e444ab9f02cf027e67bca5d4

  • SHA256

    cebc864d02d959fcde4378b8d9c34d0ec140f1347b6323977a36c7d4f4da42fe

  • SHA512

    62048bdb51e6009de1c73be5f8763238245ebbd73348a1641c95dd3ed58a0f627625e7fb9542577c604e2a5444b5773344244418ad165763af768a9220ed6242

  • SSDEEP

    49152:ZUuBTOjZwS1Ihk+hy7iHuaRZnt+NTNLiG97U:ZXRO0hkr2Rxt+e9

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 4 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • UAC bypass 3 TTPs 9 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05749f070af05abf81f45e602fcdbef4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\05749f070af05abf81f45e602fcdbef4_JaffaCakes118.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3900
    • \??\c:\windows\wininit.exe
      c:\windows\wininit.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • System policy modification
      PID:404
    • \??\c:\users\admin\appdata\local\svchost.exe
      c:\users\admin\appdata\local\svchost.exe
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • System policy modification
      PID:3548

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Defense Evasion

Modify Registry

4
T1112

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\RCX3B82.tmp
    Filesize

    3.1MB

    MD5

    cfa8e4c2a8be38cd7eb3f12344ed771f

    SHA1

    13bef75ca1f550db86820d31f4ff234108b75b3c

    SHA256

    f98c9a40b559438b3eb63c750d8f345d88233dfec6a399928a66a20adf9d8e09

    SHA512

    7349bec73c36821193bdf38fe3fa5c5ca8933a78ea8440816594af74f0c39638e905e6da327e08e4a29a53d0f437d645d9316f1c418dde01bd166a38ef5cc1ef

  • C:\Windows\wininit.exe
    Filesize

    3.1MB

    MD5

    05749f070af05abf81f45e602fcdbef4

    SHA1

    5e3f92fa742f32a9e444ab9f02cf027e67bca5d4

    SHA256

    cebc864d02d959fcde4378b8d9c34d0ec140f1347b6323977a36c7d4f4da42fe

    SHA512

    62048bdb51e6009de1c73be5f8763238245ebbd73348a1641c95dd3ed58a0f627625e7fb9542577c604e2a5444b5773344244418ad165763af768a9220ed6242

  • memory/404-42-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/404-36-0x0000000000A20000-0x0000000000A21000-memory.dmp
    Filesize

    4KB

  • memory/404-46-0x0000000000A20000-0x0000000000A21000-memory.dmp
    Filesize

    4KB

  • memory/404-54-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/404-66-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/3548-39-0x0000000002750000-0x0000000002751000-memory.dmp
    Filesize

    4KB

  • memory/3548-43-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/3548-47-0x0000000002750000-0x0000000002751000-memory.dmp
    Filesize

    4KB

  • memory/3548-55-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/3900-40-0x0000000000400000-0x00000000007B5000-memory.dmp
    Filesize

    3.7MB

  • memory/3900-0-0x0000000000990000-0x0000000000991000-memory.dmp
    Filesize

    4KB