Analysis

  • max time kernel
    151s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-10-2022 03:31

General

  • Target

    55509a771fe9e7218e8acd9a9ce5150bd1f21956559dd28213a14266e22583c0.exe

  • Size

    2.6MB

  • MD5

    51aa11d492b16e856d105368839e9105

  • SHA1

    9800d1db47238cffea6d5581b57bab555b6df82d

  • SHA256

    55509a771fe9e7218e8acd9a9ce5150bd1f21956559dd28213a14266e22583c0

  • SHA512

    7385b5eec285d1e1b945555a757c2b055241d913944e32e8384f74da391213e514ada32356ef2a8788b81d5d52d01588e14bcb2a3e83a421db6425b79a999a99

  • SSDEEP

    24576:lKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKa:2jLuSh3i+FtvkMzT+A

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

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

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55509a771fe9e7218e8acd9a9ce5150bd1f21956559dd28213a14266e22583c0.exe
    "C:\Users\Admin\AppData\Local\Temp\55509a771fe9e7218e8acd9a9ce5150bd1f21956559dd28213a14266e22583c0.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet && wmic shadowcopy delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1344
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^[autorun^] >autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:876
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^open^=KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1776
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C echo ^execute=^KasperskyScan^.exe >>autorun.inf
      2⤵
      • Drops autorun.inf file
      PID:1784
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Defense Evasion

File Deletion

2
T1107

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\autorun.inf
    Filesize

    37B

    MD5

    3883f693b2911e7b9cabaf1d89601ebd

    SHA1

    a733bc5b66e5b7beb1ab54ce430ff16cdb935fcb

    SHA256

    747ea7ec54ee0bc9b637867de0c451df65c840f757988f5a3b6e3fe6c73ab1b6

    SHA512

    41fb0555004f392f2c67fd7675d2aea2a7a28a4f51d92237fdaff2d60624c559a5401335887b66f49a721dff669f8f9bd150fde0afe0845eb366309ca1088a98

  • C:\Users\Admin\AppData\Local\Temp\autorun.inf
    Filesize

    65B

    MD5

    fbefa88e6b51c05dd63d97dfdbeb3589

    SHA1

    67e09918d878c6615befab5dc9194439027f268d

    SHA256

    3861acedffd29452d2fdb96728f7347652bde9353915d3873a7414843f49b8b1

    SHA512

    58f8c1a64f2eb21be7b96db335d1ade0ce0878566a8386b3689b650132ca28e14761b20fdfe50f2af9915dff2bdd3a5b07f6f3ed082e4e6998ec5f0cd052f12f

  • C:\Users\Admin\AppData\Local\Temp\autorun.inf
    Filesize

    65B

    MD5

    fbefa88e6b51c05dd63d97dfdbeb3589

    SHA1

    67e09918d878c6615befab5dc9194439027f268d

    SHA256

    3861acedffd29452d2fdb96728f7347652bde9353915d3873a7414843f49b8b1

    SHA512

    58f8c1a64f2eb21be7b96db335d1ade0ce0878566a8386b3689b650132ca28e14761b20fdfe50f2af9915dff2bdd3a5b07f6f3ed082e4e6998ec5f0cd052f12f

  • memory/876-58-0x0000000000000000-mapping.dmp
  • memory/1344-56-0x0000000000000000-mapping.dmp
  • memory/1424-54-0x00000000011E0000-0x00000000011E8000-memory.dmp
    Filesize

    32KB

  • memory/1424-55-0x0000000076151000-0x0000000076153000-memory.dmp
    Filesize

    8KB

  • memory/1540-57-0x0000000000000000-mapping.dmp
  • memory/1776-59-0x0000000000000000-mapping.dmp
  • memory/1784-61-0x0000000000000000-mapping.dmp