Analysis

  • max time kernel
    134s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    24-02-2023 20:46

General

  • Target

    96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82.exe

  • Size

    95KB

  • MD5

    a675308ff8839aaa8dae0e6fa814f4d9

  • SHA1

    aee241ca2c27908045a817e7816b6137d65d9a84

  • SHA256

    96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82

  • SHA512

    6dc636f22950e3984a0ff7c739abab46c78669a4b4b78768cff717f0d552b75530672a3ef545d7e975537f17ecf9f57b429aef3dda85dbce25cf9560f2c81b21

  • SSDEEP

    1536:F9YbOxBPcXIbOEpcak1RbAHKPHYx7n8U/xdqh/Hvzb2Vp7aUZp7wy0NKFPW3e:Zxc6OEpgAHKE7n8U/xYhvbb2Vp7aUj7+

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 7 IoCs
  • Gh0st RAT payload 1 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82.exe
    "C:\Users\Admin\AppData\Local\Temp\96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:1760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\96eb5b54c20c274606619e2cdfb80d9e2e787b4ed35f1ba65bfde13670e19e82.txt
    Filesize

    120KB

    MD5

    3aea5b78bac5359a799c2714fecccd1a

    SHA1

    5d3203b328ecfc7a55c0ded1032d209e9f273367

    SHA256

    c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

    SHA512

    9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

  • \Users\Public\Documents\oiie.dll
    Filesize

    2KB

    MD5

    7943effe67a4647e06def2348949020e

    SHA1

    eabd561f0639a975de259633f63896d82c3f878d

    SHA256

    3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

    SHA512

    c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

  • memory/1084-84-0x0000000003840000-0x000000000392C000-memory.dmp
    Filesize

    944KB

  • memory/1084-85-0x0000000000400000-0x0000000000427000-memory.dmp
    Filesize

    156KB

  • memory/1084-56-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1084-55-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1084-63-0x00000000032B0000-0x0000000003313000-memory.dmp
    Filesize

    396KB

  • memory/1084-83-0x0000000003840000-0x000000000392C000-memory.dmp
    Filesize

    944KB

  • memory/1084-54-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1084-57-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB

  • memory/1084-86-0x0000000003840000-0x000000000392C000-memory.dmp
    Filesize

    944KB

  • memory/1084-87-0x0000000010000000-0x0000000010017000-memory.dmp
    Filesize

    92KB

  • memory/1084-90-0x0000000000400000-0x0000000000427000-memory.dmp
    Filesize

    156KB

  • memory/1084-100-0x00000000032B0000-0x0000000003313000-memory.dmp
    Filesize

    396KB

  • memory/1084-102-0x0000000000440000-0x0000000000448000-memory.dmp
    Filesize

    32KB

  • memory/1084-101-0x00000000032B0000-0x0000000003313000-memory.dmp
    Filesize

    396KB

  • memory/1084-103-0x0000000000400000-0x000000000044B000-memory.dmp
    Filesize

    300KB