Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19-05-2024 17:40

General

  • Target

    5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe

  • Size

    96KB

  • MD5

    5aa2a8dc9e3931209d846bb125a2bc9e

  • SHA1

    040ed89196d1695c1f43397cb85d50afe0a6a907

  • SHA256

    2753940bc3bb4a0147cd807f8034ab60668cf86cb9cfbb7d878e1a7454929470

  • SHA512

    7dce9c457e2bcb2b17b9f51d06b3cd8d798f7f5f711713cdb3c08a546129e049e03e6a4f5d3f5d7679a39c748f6c199f983e6f95372f218a7174a4ee6b36c345

  • SSDEEP

    1536:JxqjQ+P04wsmJCngcN/mVM6sFbLXB65939tY6HBg4sXJOgdLeA:sr85CnqMDLk395hYXJOceA

Malware Config

Signatures

  • Detect Neshta payload 2 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 10 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2588
      • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
        "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\3582-490\
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: GetForegroundWindowSpam
        PID:2596

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe
    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • C:\Users\Admin\AppData\Local\Temp\nsiD79.tmp\ioSpecial.ini
    Filesize

    531B

    MD5

    070ab07b8eb7384034323a1ae8cba506

    SHA1

    1020558fdea9f98ae18dc1d0fad0d04804e80810

    SHA256

    1fd70237a2f1aa51d333242feb954cb7d1ea88d2565be1b50236805f89f25b89

    SHA512

    adc8843cccd70729190e9dbc887f19186d971e0b9d2e7ac16d8aaf044ec2bac028c6852c2a85af81f3f74dd3faa646e36eda8de16122ae9d86ac062fdd57a158

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\5aa2a8dc9e3931209d846bb125a2bc9e_JaffaCakes118.exe
    Filesize

    56KB

    MD5

    c5529d1faaf3cfd9899ac66280c7ddea

    SHA1

    46c253e0e187333ffab992f4cb83f5405ff0e44f

    SHA256

    a9e0880e266c102b010f1d94716cc45b2d3c07c985abb9bd035a57dcda9a2f50

    SHA512

    6fe6c2055554f763285ef09ad207947194aea54708e6ec24cb7066de2ac2f98912bb64f94f681d1b1414908ff594d3dccdcc56c5317e2e37af798170151c2d0d

  • \Users\Admin\AppData\Local\Temp\nsiD79.tmp\InstallOptions.dll
    Filesize

    14KB

    MD5

    325b008aec81e5aaa57096f05d4212b5

    SHA1

    27a2d89747a20305b6518438eff5b9f57f7df5c3

    SHA256

    c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

    SHA512

    18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

  • memory/2276-172-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB