Overview

overview

10

Static

static

3

73267c2a41...8e.exe

windows7-x64

10

73267c2a41...8e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2024 23:32

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General

  • Target

    73267c2a412170b3f3df33616b1e1e8e.exe

  • Size

    691KB

  • MD5

    73267c2a412170b3f3df33616b1e1e8e

  • SHA1

    bcc8e0537ea776cf75ea83aec75130fc5ba36b43

  • SHA256

    4756e7ee03184fc1b29807d6e77c4bb85d0eaaadd064c67b0b4b3a90175229a3

  • SHA512

    3354d9f68f4e4ba5a1d88d9d1c9e8cb8f2067f7a03bf1b60d7658b9a036d642f64d35a98ae13115795e2078dff1fbf94dfed4e71c5134b6f24600366d7d6e13e

  • SSDEEP

    12288:4KmX4064w0jAQrjnY8/V1Ng6U+VAqEr4viIrvLZo4P84ldlBGPMmLbAEWBvB7:4KCR3Pzg6U+Qk97G4P84dX0Mmv5WVB

Score
10/10
44caliberevasionpersistencespywarestealer

Malware Config

Signatures

  • 44Caliber

    An open source infostealer written in C#.

    stealer44caliber
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Looks up external IP address via web service 2 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73267c2a412170b3f3df33616b1e1e8e.exe
    "C:\Users\Admin\AppData\Local\Temp\73267c2a412170b3f3df33616b1e1e8e.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Users\Admin\AppData\Local\Temp\Insidious.exe
      "C:\Users\Admin\AppData\Local\Temp\Insidious.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5080
    • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:4424
      • C:\Windows\RuntimeBroker.exe
        "C:\Windows\RuntimeBroker.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4048
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Windows\RuntimeBroker.exe" "RuntimeBroker.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:3044
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 100 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\73267c2a412170b3f3df33616b1e1e8e.exe"& ping 1.1.1.1 -n 1 -w 900 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\73267c2a412170b3f3df33616b1e1e8e.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:676
      • C:\Windows\system32\PING.EXE
        ping 1.1.1.1 -n 1 -w 100
        3⤵
        • Runs ping.exe
        PID:1952
      • C:\Windows\system32\PING.EXE
        ping 1.1.1.1 -n 1 -w 900
        3⤵
        • Runs ping.exe
        PID:2728

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\ProgramData\44\Process.txt
    Filesize

    373B

    MD5

    680cb4a5a27740ef637006eec86150c1

    SHA1

    22e00bf9774ef887d3b3ee57ab56b30d011406ff

    SHA256

    c5a1f905f951583f5c13d6e4363f03d571fc8b456567b706ebd281d467fc7922

    SHA512

    b73f04432dfb56e1ab8bbf78928645a4c0227739f8fad6ba5b9324b6cccf185a5fa7a3a8b795bf1a7cea4fcb9394c2a6ac7e5bfd0d0982cbf94d5adf1dcd7f4f

    Download Submit
  • C:\ProgramData\44\Process.txt
    Filesize

    1KB

    MD5

    67b417b7f82a75032211f4fd59d90e6a

    SHA1

    7c7a75e679d93f43ea02e7bce65c2fac18de092b

    SHA256

    cb5a8a1f6f5fab261c015030c09fcd2e7d408e4a0da7121fc35c732eb0d29f5a

    SHA512

    72a8a2dce82878a6dda3a1bcd09dd979d7cad86b5d3db9b7e6a145f412f170cebd19c43747911d64c2762101004e75cfbf1e590a162fec868b766e07c7462e6b

    Download Submit
  • C:\ProgramData\44\Process.txt
    Filesize

    1KB

    MD5

    474a67c571028ee2f0cf92d2f5452a76

    SHA1

    66b445641e5a5368b42a3f4e6ba1dcc862b4da7d

    SHA256

    be4e6b60295fe717492cea2e23cd77610a8d46b50cc0d3cb9800f2a6d784f3f8

    SHA512

    78c74af99f726f77efaf97d25b57dd24c6a9e3e5d3a3dfd499126722d9441cc7410f46fd1c958ab97b1e409f229c4a42cba2208e5cd59fc3a71ea0950363edfc

    Download Submit
  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RuntimeBroker.exe.log
    Filesize

    319B

    MD5

    da4fafeffe21b7cb3a8c170ca7911976

    SHA1

    50ef77e2451ab60f93f4db88325b897d215be5ad

    SHA256

    7341a4a13e81cbb5b7f39ec47bb45f84836b08b8d8e3ea231d2c7dad982094f7

    SHA512

    0bc24b69460f31a0ebc0628b99908d818ee85feb7e4b663271d9375b30cced0cd55a0bbf8edff1281a4c886ddf4476ffc989c283069cdcb1235ffcb265580fc6

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\Insidious.exe
    Filesize

    328KB

    MD5

    f6639aa0f7e43cf09431850b3f473238

    SHA1

    3c7740ceacf062f8d71095bb440e280fdd3372ec

    SHA256

    870859b15395ba5c50bffd2e90b230d4ebc890c9ba8f674f87862b22254ec25e

    SHA512

    1e3fb39565e8d8f7c20e750735d79b06a97d49dbdae541f0e8e4fc97cff190d12e6bca77cef7d0018fe23f8c656d024766a05655ad6d18cdadaee2ded2b75d94

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
    Filesize

    260KB

    MD5

    1acabd72a026449937fc1cd16d0b5423

    SHA1

    809ea7e21d0e3d80a6445c245daa2e018a417126

    SHA256

    81634c88831adcb3e44d92ecd2e2a4534b50cf2d7bf001a02d68faa5d9a92bc2

    SHA512

    40fcccd3b7aac5c5ff1bbfb2e491c4f8106e44f6e5c373b590ef2474469c8c25f44725c7d6310a242be7bec9aede4e02fa5196358d45ee620e4228866cbebb1d

    Download Submit
  • memory/3484-3-0x0000000002AC0000-0x0000000002AD0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3484-1-0x0000000002A10000-0x0000000002AAC000-memory.dmp
    Filesize

    624KB

    Download
  • memory/3484-0-0x0000000000900000-0x00000000009B4000-memory.dmp
    Filesize

    720KB

    Download
  • memory/3484-80-0x00007FFDEF460000-0x00007FFDEFF21000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/3484-2-0x00007FFDEF460000-0x00007FFDEFF21000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/4048-220-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4048-218-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4048-217-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4424-110-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4424-111-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4424-216-0x0000000074A30000-0x0000000074FE1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/5080-65-0x00000000001D0000-0x0000000000228000-memory.dmp
    Filesize

    352KB

    Download
  • memory/5080-202-0x00007FFDEF460000-0x00007FFDEFF21000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/5080-66-0x00007FFDEF460000-0x00007FFDEFF21000-memory.dmp
    Filesize

    10.8MB

    Download
  • memory/5080-68-0x000000001AF60000-0x000000001AFCE000-memory.dmp
    Filesize

    440KB

    Download
  • memory/5080-67-0x00000000009D0000-0x00000000009E0000-memory.dmp
    Filesize

    64KB

    Download