Analysis

  • max time kernel
    147s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 09:25

General

  • Target

    f65845f788aaaacf5705dd2db21edc0b.exe

  • Size

    1.5MB

  • MD5

    f65845f788aaaacf5705dd2db21edc0b

  • SHA1

    8cd3b8e2905d232b56ed775ffbb8c2f8cf58e80f

  • SHA256

    b07f1a61fef552e8f6261abb854ec9b44aa57588c6ae812bf67f6a267a14ff9b

  • SHA512

    cf91401cabf4315b37d5ffe711e43bddbeeb4889432b3df8b197e1157241be892a90182124f4a02e7ead623040d23b7a12436a6230c881efe2ce597b6f01d86a

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f65845f788aaaacf5705dd2db21edc0b.exe
    "C:\Users\Admin\AppData\Local\Temp\f65845f788aaaacf5705dd2db21edc0b.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1508
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "not" /t REG_SZ /d "C:\Users\Admin\scis.exe"
        3⤵
        • Adds Run key to start application
        PID:1692
    • C:\Users\Admin\scis.exe
      "C:\Users\Admin\scis.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1072
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1152

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\scis.exe
    MD5

    f65845f788aaaacf5705dd2db21edc0b

    SHA1

    8cd3b8e2905d232b56ed775ffbb8c2f8cf58e80f

    SHA256

    b07f1a61fef552e8f6261abb854ec9b44aa57588c6ae812bf67f6a267a14ff9b

    SHA512

    cf91401cabf4315b37d5ffe711e43bddbeeb4889432b3df8b197e1157241be892a90182124f4a02e7ead623040d23b7a12436a6230c881efe2ce597b6f01d86a

  • C:\Users\Admin\scis.exe
    MD5

    f65845f788aaaacf5705dd2db21edc0b

    SHA1

    8cd3b8e2905d232b56ed775ffbb8c2f8cf58e80f

    SHA256

    b07f1a61fef552e8f6261abb854ec9b44aa57588c6ae812bf67f6a267a14ff9b

    SHA512

    cf91401cabf4315b37d5ffe711e43bddbeeb4889432b3df8b197e1157241be892a90182124f4a02e7ead623040d23b7a12436a6230c881efe2ce597b6f01d86a

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe
    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\scis.exe
    MD5

    f65845f788aaaacf5705dd2db21edc0b

    SHA1

    8cd3b8e2905d232b56ed775ffbb8c2f8cf58e80f

    SHA256

    b07f1a61fef552e8f6261abb854ec9b44aa57588c6ae812bf67f6a267a14ff9b

    SHA512

    cf91401cabf4315b37d5ffe711e43bddbeeb4889432b3df8b197e1157241be892a90182124f4a02e7ead623040d23b7a12436a6230c881efe2ce597b6f01d86a

  • memory/1072-15-0x0000000073980000-0x000000007406E000-memory.dmp
    Filesize

    6.9MB

  • memory/1072-25-0x0000000004AA1000-0x0000000004AA2000-memory.dmp
    Filesize

    4KB

  • memory/1072-22-0x0000000000B40000-0x0000000000B41000-memory.dmp
    Filesize

    4KB

  • memory/1072-21-0x00000000006A0000-0x00000000006AB000-memory.dmp
    Filesize

    44KB

  • memory/1072-12-0x0000000000000000-mapping.dmp
  • memory/1072-19-0x0000000004AA0000-0x0000000004AA1000-memory.dmp
    Filesize

    4KB

  • memory/1072-16-0x0000000000D60000-0x0000000000D61000-memory.dmp
    Filesize

    4KB

  • memory/1152-26-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1152-32-0x0000000004B30000-0x0000000004B31000-memory.dmp
    Filesize

    4KB

  • memory/1152-30-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1152-29-0x0000000073980000-0x000000007406E000-memory.dmp
    Filesize

    6.9MB

  • memory/1152-27-0x000000000046381E-mapping.dmp
  • memory/1336-3-0x00000000001C0000-0x00000000001C1000-memory.dmp
    Filesize

    4KB

  • memory/1336-10-0x0000000004D31000-0x0000000004D32000-memory.dmp
    Filesize

    4KB

  • memory/1336-5-0x0000000000510000-0x000000000052E000-memory.dmp
    Filesize

    120KB

  • memory/1336-6-0x00000000004F0000-0x00000000004F1000-memory.dmp
    Filesize

    4KB

  • memory/1336-2-0x0000000073980000-0x000000007406E000-memory.dmp
    Filesize

    6.9MB

  • memory/1336-7-0x0000000004D30000-0x0000000004D31000-memory.dmp
    Filesize

    4KB

  • memory/1508-8-0x0000000000000000-mapping.dmp
  • memory/1692-9-0x0000000000000000-mapping.dmp