Analysis

  • max time kernel
    143s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2023 06:14

General

  • Target

    Balance payment.exe

  • Size

    283KB

  • MD5

    338b022ed773533c2df2c0d940791682

  • SHA1

    8e08acf19970e369a6755c0b8a0789b5019b191d

  • SHA256

    e7e5b2d142ef7cf284f13c79979200a577e782ab42b1450367fa516a5fe0e74f

  • SHA512

    56614594dc6b2053332e5666c6d7986ee682d79482f9dd3d32bb8f4b691d18b919b2ad77b9b28513fca9bba952f74155788959c30d52b67a828960fb47598099

  • SSDEEP

    6144:vYa6cmProlCbisHQRkvLkFPOplpq1mELmrGmPQ2psy1:vY5eCbTQQL8P8lMmbrVIc1

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Balance payment.exe
    "C:\Users\Admin\AppData\Local\Temp\Balance payment.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe
      "C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe" C:\Users\Admin\AppData\Local\Temp\dtkehugnw.b
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4120
      • C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe
        "C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:2908

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\arkrdxnowuu.pi
    Filesize

    225KB

    MD5

    4c4c2bb8ac32820ea7f764a39930b691

    SHA1

    9d32ccebec4d20f05b5174a8df8e28522a45cac9

    SHA256

    2b4ded7f1c4dc807606fca8fdf6598c28dd1ca1595d814aaa68a72b019dc576f

    SHA512

    4c931c3777015bf0d230e815a0271aae7891942b5f39a5b494226139737cfad1acb5259b93bd81da6f2aae844e7de7ca107043a60bbecadd9d694abde0a7fa19

  • C:\Users\Admin\AppData\Local\Temp\dtkehugnw.b
    Filesize

    5KB

    MD5

    da52689529fb6d747ebf9416e58e347e

    SHA1

    37bb4e15e2a904806207a9e9b2e68e2e618b8afb

    SHA256

    69649f06f82a110ab970372928dbfa0eebdaad3801bfc4db0770c1f066a7001e

    SHA512

    ac398822050490c33a93c92b93a44eeb7020b96c7cb8b25f7008817a32393987d61b11dd5c24ec6075a117435d9c443ba0394215883d2f0fc6f0f846d20fca0e

  • C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe
    Filesize

    138KB

    MD5

    d5171ff863900d72508088d68910d5f4

    SHA1

    3bdb12110f88d56d47aff74b460323691e99bf4f

    SHA256

    2ea56e830c3deb56564c023822a5e0d1f771983361fb4fe00753ac64501743c8

    SHA512

    6016f09eb32b4e0fc4fa97dbf28be78b829ff8026385146a49f8b6b8817152b9e919fa535fe4ce8b70b09284db8ff1fc05d28b8fc30886335820265ae12492de

  • C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe
    Filesize

    138KB

    MD5

    d5171ff863900d72508088d68910d5f4

    SHA1

    3bdb12110f88d56d47aff74b460323691e99bf4f

    SHA256

    2ea56e830c3deb56564c023822a5e0d1f771983361fb4fe00753ac64501743c8

    SHA512

    6016f09eb32b4e0fc4fa97dbf28be78b829ff8026385146a49f8b6b8817152b9e919fa535fe4ce8b70b09284db8ff1fc05d28b8fc30886335820265ae12492de

  • C:\Users\Admin\AppData\Local\Temp\ubifldxz.exe
    Filesize

    138KB

    MD5

    d5171ff863900d72508088d68910d5f4

    SHA1

    3bdb12110f88d56d47aff74b460323691e99bf4f

    SHA256

    2ea56e830c3deb56564c023822a5e0d1f771983361fb4fe00753ac64501743c8

    SHA512

    6016f09eb32b4e0fc4fa97dbf28be78b829ff8026385146a49f8b6b8817152b9e919fa535fe4ce8b70b09284db8ff1fc05d28b8fc30886335820265ae12492de

  • memory/2908-148-0x0000000000400000-0x0000000000437000-memory.dmp
    Filesize

    220KB

  • memory/2908-156-0x0000000005E30000-0x0000000005E3A000-memory.dmp
    Filesize

    40KB

  • memory/2908-142-0x0000000000400000-0x0000000000437000-memory.dmp
    Filesize

    220KB

  • memory/2908-146-0x0000000000400000-0x0000000000437000-memory.dmp
    Filesize

    220KB

  • memory/2908-147-0x0000000004950000-0x0000000004EF4000-memory.dmp
    Filesize

    5.6MB

  • memory/2908-161-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-149-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-150-0x0000000004F40000-0x0000000004FDC000-memory.dmp
    Filesize

    624KB

  • memory/2908-152-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-151-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-153-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-154-0x0000000005B50000-0x0000000005D12000-memory.dmp
    Filesize

    1.8MB

  • memory/2908-155-0x0000000005D20000-0x0000000005DB2000-memory.dmp
    Filesize

    584KB

  • memory/2908-144-0x0000000000400000-0x0000000000437000-memory.dmp
    Filesize

    220KB

  • memory/2908-158-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-159-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/2908-160-0x0000000004940000-0x0000000004950000-memory.dmp
    Filesize

    64KB

  • memory/4120-140-0x00000000005B0000-0x00000000005B2000-memory.dmp
    Filesize

    8KB