Overview

overview

8

Static

static

8

a6a1d90bbd...c4.exe

windows7-x64

8

a6a1d90bbd...c4.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    72s
  • max time network
    61s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2022 04:18

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General

  • Target

    a6a1d90bbdd335e3020f7a76ef377b18156ee89def899763c97a8917fb7521c4.exe

  • Size

    350KB

  • MD5

    31fc29eaf6a68de98f5e3f0d5ba27750

  • SHA1

    082a15a5c65eb5049f420e0c3c7e3dce630ed816

  • SHA256

    a6a1d90bbdd335e3020f7a76ef377b18156ee89def899763c97a8917fb7521c4

  • SHA512

    4563f48a880be6d30072e6dcde7a5a1c80574557b3c07a199115586c5c10efc81c9e6c1df35c36e6e796c27ea9867adc40fa426aeefd46ac183260883b136b0a

  • SSDEEP

    6144:+yXu7IEBSsQ9ElMwm60lmqs7MTRGA3h3GVqdppJXEGhBukJF/KAwxFUOWdEmh:+3BdQLL4BE93NGVYZX9BukJlwxSJdEm

Score
8/10
adwarediscoveryexploitpersistencestealerupx

Malware Config

Signatures

  • Drops file in Drivers directory 2 IoCs
  • Possible privilege escalation attempt 2 IoCs
    exploit
  • Sets service image path in registry 2 TTPs 2 IoCs
    persistence
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Deletes itself 1 IoCs
  • Modifies file permissions 1 TTPs 2 IoCs
    discovery
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

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

    stealeradware
  • Drops file in System32 directory 5 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6a1d90bbdd335e3020f7a76ef377b18156ee89def899763c97a8917fb7521c4.exe
    "C:\Users\Admin\AppData\Local\Temp\a6a1d90bbdd335e3020f7a76ef377b18156ee89def899763c97a8917fb7521c4.exe"
    1⤵
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: LoadsDriver
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c takeown /f C:\Windows\SysWOW64\wshtcpip.dll && icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f C:\Windows\SysWOW64\wshtcpip.dll
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:1352
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\Windows\SysWOW64\wshtcpip.dll /grant administrators:F
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:1784
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
      2⤵
      • Deletes itself
      PID:1648

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Browser Extensions

1
T1176

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

File Permissions Modification

1
T1222

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ahnmove.bat
    Filesize

    181B

    MD5

    b3956b1ad5e8f84b0888d1f363a702b4

    SHA1

    540e534ade53153526ee8902fa7d750952ab7c0e

    SHA256

    78fabccce9fa6aa0b3291398345f8d648d38dd0d56ed3ae770af5fb8577d0258

    SHA512

    9fec62f5ebb56d23ac517620207b04d621ef0beeb1bfd09b3a64bd514e79b6ea1006a6e88b0758171161e0093c4465ef94bc29921b23c7b73fd8e159ec3bb307

    Download Submit
  • memory/1352-58-0x0000000000000000-mapping.dmp
    Download
  • memory/1424-54-0x0000000076151000-0x0000000076153000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1424-55-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

    Download
  • memory/1424-56-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

    Download
  • memory/1424-61-0x0000000001000000-0x000000000112D000-memory.dmp
    Filesize

    1.2MB

    Download
  • memory/1648-60-0x0000000000000000-mapping.dmp
    Download
  • memory/1688-57-0x0000000000000000-mapping.dmp
    Download
  • memory/1784-59-0x0000000000000000-mapping.dmp
    Download