Overview

overview

10

Static

static

1

5b5fb7165b...4e.exe

windows7-x64

10

5b5fb7165b...4e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    178s
  • max time network
    201s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-08-2022 00:01

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General

  • Target

    5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e.exe

  • Size

    890KB

  • MD5

    39235e9dc0c41d1c834311205707decb

  • SHA1

    fbd32d7135ef784e94b8b0271b846392f7dce36e

  • SHA256

    5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e

  • SHA512

    93cb831f6c1a085741fc8e70dd19ac37d3a76e7b3d5a0f6798c6c8ae8e4e1b3ceb9d88be16438739f31528baa272179c4d0f07aad3668d73c8f090ee10114001

Score
10/10
xmrigminerpersistenceupx

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

    minerxmrig
  • XMRig Miner payload 3 IoCs
    miner
  • UPX packed file 5 IoCs

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

    upx
  • Loads dropped DLL 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e.exe
    "C:\Users\Admin\AppData\Local\Temp\5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\SysWOW64\msiexec.exe
      2⤵
      • Modifies WinLogon for persistence
      PID:3348
    • C:\Users\Admin\AppData\Local\Temp\5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e.exe
      "C:\Users\Admin\AppData\Local\Temp\5b5fb7165b3b08c4bb203335cca2a8b10863ce3624ea5382771092967660a14e.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2756
      • C:\Windows\notepad.exe
        "C:\Windows\notepad.exe" -c "C:\ProgramData\sHrhJDaCBu\cfgi"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\ProgramData\sHrhJDaCBu\cfgi
    Filesize

    548B

    MD5

    d84b60d37ea5e8fdb8f69f872f77ed5f

    SHA1

    6dd312b42ebd731f96f4580d687bb2125d9ddb4b

    SHA256

    503f536489bc9e69e8f472786690a4da9f69a293fe1788d1165eff0cc90ae01d

    SHA512

    819d2b0504dab5556c9a8d8be473fcebf48e367220e4a019b4ff422c9c9ecb6d14fc3e6ea840e2d9294f541e8110241af61bc401840668bc8071890336560960

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\Hottentot.dll
    Filesize

    68KB

    MD5

    bebddeb593fa1302cea66faac25a9e3c

    SHA1

    9e8cce6ffa83fdc147b6dc83811db52d20261191

    SHA256

    d7f58fd413f4976dace7b5e6c4c5dd5987a9d919e7c050052060c30a7d169b34

    SHA512

    0e18ca3bd3c01c6b80301c83c9d964607e5df21bf5536e6f332b9cf84cc9a7c100a8a47deebd9ced8fbefd61549df13473139a2f23f3b98df2ba9f54c6c6fc6a

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\Hottentot.dll
    Filesize

    68KB

    MD5

    bebddeb593fa1302cea66faac25a9e3c

    SHA1

    9e8cce6ffa83fdc147b6dc83811db52d20261191

    SHA256

    d7f58fd413f4976dace7b5e6c4c5dd5987a9d919e7c050052060c30a7d169b34

    SHA512

    0e18ca3bd3c01c6b80301c83c9d964607e5df21bf5536e6f332b9cf84cc9a7c100a8a47deebd9ced8fbefd61549df13473139a2f23f3b98df2ba9f54c6c6fc6a

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\nsa4799.tmp\System.dll
    Filesize

    11KB

    MD5

    3f176d1ee13b0d7d6bd92e1c7a0b9bae

    SHA1

    fe582246792774c2c9dd15639ffa0aca90d6fd0b

    SHA256

    fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

    SHA512

    0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

    Download Submit
  • memory/528-143-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/528-147-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/528-146-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/528-144-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/528-140-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/528-141-0x00000000004E78B0-mapping.dmp
    Download
  • memory/528-142-0x0000000000400000-0x00000000004ED000-memory.dmp
    Filesize

    948KB

    Download
  • memory/1880-133-0x0000000002380000-0x0000000002392000-memory.dmp
    Filesize

    72KB

    Download
  • memory/2756-136-0x0000000000400000-0x00000000004C9000-memory.dmp
    Filesize

    804KB

    Download
  • memory/2756-139-0x0000000000400000-0x00000000004C9000-memory.dmp
    Filesize

    804KB

    Download
  • memory/2756-138-0x0000000000400000-0x00000000004C9000-memory.dmp
    Filesize

    804KB

    Download
  • memory/2756-135-0x0000000000000000-mapping.dmp
    Download
  • memory/3348-134-0x0000000000000000-mapping.dmp
    Download