Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    28-12-2020 07:30

General

  • Target

    0f64dfaa815081f110456e9894a7771c.exe

  • Size

    594KB

  • MD5

    0f64dfaa815081f110456e9894a7771c

  • SHA1

    2d32280b058eefc202ec725b3fa644e9d657960b

  • SHA256

    8d2e3cb6a7ee561bafe29716d678dd185419a969537eeaeb93a048b930895c9f

  • SHA512

    249caa13cadedf9cd945d165998e101821916c3ca40daf274c502ae7266400011f9bbb25d6c98972b7ad4f8af14648a364da4d5bbbcf102e1fa4e234b5a84f10

Score
10/10

Malware Config

Signatures

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0f64dfaa815081f110456e9894a7771c.exe
    "C:\Users\Admin\AppData\Local\Temp\0f64dfaa815081f110456e9894a7771c.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe
      bestof.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1648

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe

    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • \Users\Admin\AppData\Roaming\leadentop\bestof.exe

    MD5

    ce62304c3eff639e1b2352667a569b8a

    SHA1

    5a5cb774b59befe102fe04e93d9853cfbda3334b

    SHA256

    e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62

    SHA512

    99d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41

  • memory/1228-4-0x000007FEF68D0000-0x000007FEF6B4A000-memory.dmp

    Filesize

    2.5MB

  • memory/1648-6-0x0000000000000000-mapping.dmp

  • memory/1648-8-0x00000000002DA000-0x00000000002DB000-memory.dmp

    Filesize

    4KB

  • memory/1648-9-0x0000000004F10000-0x0000000004F21000-memory.dmp

    Filesize

    68KB

  • memory/1648-10-0x00000000067D0000-0x00000000067E1000-memory.dmp

    Filesize

    68KB

  • memory/1648-11-0x00000000744F0000-0x0000000074BDE000-memory.dmp

    Filesize

    6.9MB

  • memory/1648-12-0x0000000006750000-0x0000000006774000-memory.dmp

    Filesize

    144KB

  • memory/1648-13-0x0000000006B10000-0x0000000006B32000-memory.dmp

    Filesize

    136KB

  • memory/1684-2-0x00000000002BA000-0x00000000002BB000-memory.dmp

    Filesize

    4KB

  • memory/1684-3-0x0000000004FA0000-0x0000000004FB1000-memory.dmp

    Filesize

    68KB