Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-05-2023 07:21

General

  • Target

    d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8.exe

  • Size

    398KB

  • MD5

    8ff87a847f8ab762522075d18d67aecb

  • SHA1

    0bf00a44ff52486e270aa5776aa1b91ccf7855c5

  • SHA256

    d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8

  • SHA512

    edc93c8975905cc77723c4f73bd607a9e6632baa05e4b362235f608873f2aa89d9762fc127808e4bad3c7053b9676c108dd4c8e7a731a122fc058bdafea1520d

  • SSDEEP

    6144:eNAfdtIIp3THTZRqokUu7g8tfxFADRc+Sn5whgDL9jKxb6jBGbXO42W6jGC4ZKYU:zdtIIlqozl8t8llbh4j9GcPjtxuva

Malware Config

Signatures

  • Blackmoon, KrBanker

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

  • Detect Blackmoon payload 9 IoCs
  • Gh0st RAT payload 3 IoCs
  • Gh0strat

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • UPX packed file 1 IoCs

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

  • 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).

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8.exe
    "C:\Users\Admin\AppData\Local\Temp\d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Checks processor information in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:2108
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 2172
      2⤵
      • Program crash
      PID:4480
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2172 -ip 2172
    1⤵
      PID:5012

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\aaaty.dll

      Filesize

      2KB

      MD5

      7943effe67a4647e06def2348949020e

      SHA1

      eabd561f0639a975de259633f63896d82c3f878d

      SHA256

      3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

      SHA512

      c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

    • C:\Users\Admin\AppData\Local\Temp\aaaty.dll

      Filesize

      2KB

      MD5

      7943effe67a4647e06def2348949020e

      SHA1

      eabd561f0639a975de259633f63896d82c3f878d

      SHA256

      3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

      SHA512

      c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

    • C:\Users\Admin\AppData\Local\Temp\d3da6b93e7598fb522fe8858e15e445ba1ca13d05aacd22156d8ad3d745dd2d8.txt

      Filesize

      120KB

      MD5

      3aea5b78bac5359a799c2714fecccd1a

      SHA1

      5d3203b328ecfc7a55c0ded1032d209e9f273367

      SHA256

      c05e763cab67cf9daf5be7a6a6cff2650223987a9693eaa119f69b2bbb6df6c3

      SHA512

      9513cc84a7ed3dd709d4affb03f6e286dcd43e82f33441c00a9d74d2b45449f2ee20baa8db46218d7a59d9e62fb7f95050ea305166e70f3e71dde39ccf07b6d3

    • C:\Users\Public\Documents\erty.dll

      Filesize

      2KB

      MD5

      7943effe67a4647e06def2348949020e

      SHA1

      eabd561f0639a975de259633f63896d82c3f878d

      SHA256

      3fac47db92d581b2daef7a4f9493be2fe441041e5158101d80873d05808d5cfa

      SHA512

      c9db1962e7457c94426c2a5c7f439736697d4399db6982c45357459d58805daa4a9d297912135488b6990e265ffa59d687fd5ba43717aab46ccc212083ef5003

    • C:\Users\Public\Documents\sjsw.log

      Filesize

      255B

      MD5

      538e35c88897748ad16f800e857eaf9e

      SHA1

      051eaccefe61f3c0960fc71d3e40c6f19c0f6a0c

      SHA256

      14ca85bdb3733c3396911383bd4fc6bd809d531d699f79180483808c8e7beb15

      SHA512

      90d29906575fa57524f3399e706d8a182d3e15429223b3624191c6925f8173e53f4b5734637cd8234b168d442dd4b52794a6bbe284a6401f729e5ccb4ef187e0

    • memory/2172-171-0x0000000004050000-0x0000000004142000-memory.dmp

      Filesize

      968KB

    • memory/2172-173-0x0000000004050000-0x0000000004142000-memory.dmp

      Filesize

      968KB

    • memory/2172-140-0x00000000025A0000-0x00000000025DB000-memory.dmp

      Filesize

      236KB

    • memory/2172-146-0x0000000003240000-0x00000000032A6000-memory.dmp

      Filesize

      408KB

    • memory/2172-147-0x0000000003240000-0x00000000032A6000-memory.dmp

      Filesize

      408KB

    • memory/2172-150-0x0000000003240000-0x00000000032A6000-memory.dmp

      Filesize

      408KB

    • memory/2172-151-0x00000000026F0000-0x00000000026F3000-memory.dmp

      Filesize

      12KB

    • memory/2172-139-0x00000000025A0000-0x00000000025DB000-memory.dmp

      Filesize

      236KB

    • memory/2172-138-0x00000000025A0000-0x00000000025DB000-memory.dmp

      Filesize

      236KB

    • memory/2172-133-0x0000000000400000-0x00000000004FE000-memory.dmp

      Filesize

      1016KB

    • memory/2172-172-0x0000000004050000-0x0000000004142000-memory.dmp

      Filesize

      968KB

    • memory/2172-141-0x0000000000B80000-0x0000000000B83000-memory.dmp

      Filesize

      12KB

    • memory/2172-174-0x0000000000400000-0x0000000000427000-memory.dmp

      Filesize

      156KB

    • memory/2172-175-0x0000000004050000-0x0000000004142000-memory.dmp

      Filesize

      968KB

    • memory/2172-176-0x0000000010001000-0x000000001000F000-memory.dmp

      Filesize

      56KB

    • memory/2172-177-0x0000000010000000-0x0000000010017000-memory.dmp

      Filesize

      92KB

    • memory/2172-179-0x0000000000400000-0x0000000000427000-memory.dmp

      Filesize

      156KB

    • memory/2172-189-0x0000000003240000-0x00000000032A6000-memory.dmp

      Filesize

      408KB

    • memory/2172-190-0x0000000010000000-0x0000000010003000-memory.dmp

      Filesize

      12KB

    • memory/2172-191-0x0000000000400000-0x00000000004FE000-memory.dmp

      Filesize

      1016KB

    • memory/2172-193-0x0000000000400000-0x0000000000427000-memory.dmp

      Filesize

      156KB

    • memory/2172-197-0x0000000003240000-0x00000000032A6000-memory.dmp

      Filesize

      408KB

    • memory/2172-199-0x00000000025A0000-0x00000000025DB000-memory.dmp

      Filesize

      236KB