Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19-01-2021 07:56

General

  • Target

    b47f9debd444eacd67ee09f892a25329.exe

  • Size

    1.6MB

  • MD5

    b47f9debd444eacd67ee09f892a25329

  • SHA1

    d5a54558cfe679ed97615acc6b0e114854a292c6

  • SHA256

    2bffb59c94e38a0b9c564111115dd3bf5d9f333dc1554d308722637d9f88cdf1

  • SHA512

    1f59adc8b1876966c50d49b89802ec21935bcc6e8061f043ac67a0d79a93f678869031889447b539ad8d4649705670d9c5fcd17a0fcd178953a76de370d64841

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger Payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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.

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b47f9debd444eacd67ee09f892a25329.exe
    "C:\Users\Admin\AppData\Local\Temp\b47f9debd444eacd67ee09f892a25329.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:804
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1396

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Collection

Data from Local System

2
T1005

Replay Monitor

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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

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

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/804-7-0x0000000004CB0000-0x0000000004CB1000-memory.dmp
    Filesize

    4KB

  • memory/804-2-0x0000000074120000-0x000000007480E000-memory.dmp
    Filesize

    6.9MB

  • memory/804-8-0x0000000000570000-0x000000000057B000-memory.dmp
    Filesize

    44KB

  • memory/804-9-0x00000000005D0000-0x00000000005D1000-memory.dmp
    Filesize

    4KB

  • memory/804-6-0x00000000003E0000-0x00000000003E1000-memory.dmp
    Filesize

    4KB

  • memory/804-11-0x0000000004CB1000-0x0000000004CB2000-memory.dmp
    Filesize

    4KB

  • memory/804-5-0x00000000003C0000-0x00000000003DE000-memory.dmp
    Filesize

    120KB

  • memory/804-3-0x0000000000C60000-0x0000000000C61000-memory.dmp
    Filesize

    4KB

  • memory/1396-12-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1396-13-0x000000000046364E-mapping.dmp
  • memory/1396-16-0x0000000074120000-0x000000007480E000-memory.dmp
    Filesize

    6.9MB

  • memory/1396-17-0x0000000000400000-0x0000000000468000-memory.dmp
    Filesize

    416KB

  • memory/1396-19-0x0000000004BA0000-0x0000000004BA1000-memory.dmp
    Filesize

    4KB