Overview

overview

10

Static

static

74b37b00ec...c2.exe

windows7_x64

10

74b37b00ec...c2.exe

windows10_x64

10

Analysis

  • max time kernel
    14s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-07-2021 20:09

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General

  • Target

    74b37b00ec4ea2e2ee861621c5191ac2.exe

  • Size

    1.3MB

  • MD5

    74b37b00ec4ea2e2ee861621c5191ac2

  • SHA1

    f711f8acd1b587e2edc557756019e367d3ac8c78

  • SHA256

    4a440ef3be94895fcaaab5b4ba0755e8350e6131cabd507be510056739601df4

  • SHA512

    9a01a5c237e774bef8caa889d424e069237c586d8de73552cf98dab1efd1e12c3362ead0627e0128eb30df0e65878243eed1283bdb3f08d7d03cdc10a35b9f2d

Score
10/10
oskidiscoveryinfostealerspywarestealer

Malware Config

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

    infostealeroski
  • Downloads MZ/PE file
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • 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 1 IoCs

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

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\74b37b00ec4ea2e2ee861621c5191ac2.exe
    "C:\Users\Admin\AppData\Local\Temp\74b37b00ec4ea2e2ee861621c5191ac2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2204
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /pid 2204 & erase C:\Users\Admin\AppData\Local\Temp\74b37b00ec4ea2e2ee861621c5191ac2.exe & RD /S /Q C:\\ProgramData\\254735295559136\\* & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3956
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /pid 2204
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:348

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    Download Submit
  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    Download Submit
  • \ProgramData\sqlite3.dll
    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

    Download Submit
  • memory/348-119-0x0000000000000000-mapping.dmp
    Download
  • memory/2204-114-0x00000000013D0000-0x00000000013D1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3956-118-0x0000000000000000-mapping.dmp
    Download