Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 09:23

General

  • Target

    27970a1a59a9e4f39aed843e55e31ae0.exe

  • Size

    1.5MB

  • MD5

    27970a1a59a9e4f39aed843e55e31ae0

  • SHA1

    c1c54be2a890bc5174b9a94d19385d3c9e9f8b8a

  • SHA256

    30eb1963753aa4a9d4987f1e43c684d91b1b9ca11202a7f751bc621a0149cb19

  • SHA512

    0fbb5bbb642b8230a2c18dd06cf930fab67fd1e3b6b461a2560b7464d9f557723d9fe813ebcafb5b7400be1e45f8bb275056f500523d9d740f4251ebde9f15ae

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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27970a1a59a9e4f39aed843e55e31ae0.exe
    "C:\Users\Admin\AppData\Local\Temp\27970a1a59a9e4f39aed843e55e31ae0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1812
    • 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:1776
      • 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:1624
    • 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:1728
      • 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:1140

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

    27970a1a59a9e4f39aed843e55e31ae0

    SHA1

    c1c54be2a890bc5174b9a94d19385d3c9e9f8b8a

    SHA256

    30eb1963753aa4a9d4987f1e43c684d91b1b9ca11202a7f751bc621a0149cb19

    SHA512

    0fbb5bbb642b8230a2c18dd06cf930fab67fd1e3b6b461a2560b7464d9f557723d9fe813ebcafb5b7400be1e45f8bb275056f500523d9d740f4251ebde9f15ae

  • C:\Users\Admin\scis.exe
    MD5

    27970a1a59a9e4f39aed843e55e31ae0

    SHA1

    c1c54be2a890bc5174b9a94d19385d3c9e9f8b8a

    SHA256

    30eb1963753aa4a9d4987f1e43c684d91b1b9ca11202a7f751bc621a0149cb19

    SHA512

    0fbb5bbb642b8230a2c18dd06cf930fab67fd1e3b6b461a2560b7464d9f557723d9fe813ebcafb5b7400be1e45f8bb275056f500523d9d740f4251ebde9f15ae

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

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\scis.exe
    MD5

    27970a1a59a9e4f39aed843e55e31ae0

    SHA1

    c1c54be2a890bc5174b9a94d19385d3c9e9f8b8a

    SHA256

    30eb1963753aa4a9d4987f1e43c684d91b1b9ca11202a7f751bc621a0149cb19

    SHA512

    0fbb5bbb642b8230a2c18dd06cf930fab67fd1e3b6b461a2560b7464d9f557723d9fe813ebcafb5b7400be1e45f8bb275056f500523d9d740f4251ebde9f15ae

  • memory/1140-32-0x0000000004960000-0x0000000004961000-memory.dmp
    Filesize

    4KB

  • memory/1140-30-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1140-29-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1140-27-0x000000000046381E-mapping.dmp
  • memory/1140-26-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1624-9-0x0000000000000000-mapping.dmp
  • memory/1728-20-0x0000000000630000-0x0000000000631000-memory.dmp
    Filesize

    4KB

  • memory/1728-25-0x0000000000631000-0x0000000000632000-memory.dmp
    Filesize

    4KB

  • memory/1728-12-0x0000000000000000-mapping.dmp
  • memory/1728-21-0x00000000008C0000-0x00000000008CB000-memory.dmp
    Filesize

    44KB

  • memory/1728-22-0x0000000000B60000-0x0000000000B61000-memory.dmp
    Filesize

    4KB

  • memory/1728-15-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1728-16-0x0000000000150000-0x0000000000151000-memory.dmp
    Filesize

    4KB

  • memory/1776-8-0x0000000000000000-mapping.dmp
  • memory/1812-5-0x00000000002F0000-0x000000000030E000-memory.dmp
    Filesize

    120KB

  • memory/1812-2-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1812-3-0x0000000000EE0000-0x0000000000EE1000-memory.dmp
    Filesize

    4KB

  • memory/1812-6-0x0000000000320000-0x0000000000321000-memory.dmp
    Filesize

    4KB

  • memory/1812-7-0x0000000000A40000-0x0000000000A41000-memory.dmp
    Filesize

    4KB

  • memory/1812-10-0x0000000000A41000-0x0000000000A42000-memory.dmp
    Filesize

    4KB