Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2022 03:30

General

  • Target

    5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1.exe

  • Size

    211KB

  • MD5

    3c9c3f967aafcae7e3831205a0118b9e

  • SHA1

    1bd361aefbd04b84c48937a14b5318806897e4a5

  • SHA256

    5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1

  • SHA512

    165d4c457ca5a7a82c77ca3c98c42b76eb13cd4374c11a5895013b64c315ecefdd78dd978a16f0daac28289d21d2079629233f664849ef71e7284b783fe255ec

Malware Config

Signatures

  • suricata: ET MALWARE Ransomware/Cerber Checkin 2

    suricata: ET MALWARE Ransomware/Cerber Checkin 2

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Contacts a large (512) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1.exe
    "C:\Users\Admin\AppData\Local\Temp\5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Users\Admin\AppData\Local\Temp\5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1.exe
      "C:\Users\Admin\AppData\Local\Temp\5668e6a044b5982f1c2e542dc6cbdb065c35bf0555cc684e374004ac67ba23a1.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1652
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Windows\system32\wbem\WMIC.exe
          C:\Windows\system32\wbem\wmic.exe shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1924
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:432

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

1
T1107

Credential Access

Credentials in Files

1
T1081

Discovery

Network Service Scanning

1
T1046

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

1
T1490

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\mutchkins.dll
    Filesize

    19KB

    MD5

    9954938c1b03564479e92d5d44251b26

    SHA1

    2e92b4f91cab000f68fcf13c90d1761a29c1919f

    SHA256

    8df28b7c0404c73fa43db4fc79da06b5128848e4188b7ab88bcd11ce7bf102ee

    SHA512

    c4b41518d2207b2b31fd3e9aa3ffa3bd11f1fa2490d918e4af1f8bd0be48f41dffd9aaf7a22531c4e3bc94a68cfbfc2c1469a8c1a5c7441231288c2a4b3832d2

  • \Users\Admin\AppData\Local\Temp\nsyFE6E.tmp\System.dll
    Filesize

    11KB

    MD5

    a436db0c473a087eb61ff5c53c34ba27

    SHA1

    65ea67e424e75f5065132b539c8b2eda88aa0506

    SHA256

    75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

    SHA512

    908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

  • memory/1652-61-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-57-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-58-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-59-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-63-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-65-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-66-0x0000000000402BDD-mapping.dmp
  • memory/1652-69-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-70-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1652-73-0x0000000000400000-0x0000000000432000-memory.dmp
    Filesize

    200KB

  • memory/1800-54-0x0000000076291000-0x0000000076293000-memory.dmp
    Filesize

    8KB

  • memory/1924-72-0x0000000000000000-mapping.dmp
  • memory/1996-71-0x0000000000000000-mapping.dmp