Analysis

  • max time kernel
    180s
  • max time network
    208s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-06-2022 11:18

General

  • Target

    20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe

  • Size

    510KB

  • MD5

    3df02e64659fedacf825ada69c2991b1

  • SHA1

    7ec75acbb60f83f627f37027c6e6f29b7dfbd025

  • SHA256

    20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b

  • SHA512

    a8efc24ca96312e67aac2498c45b1ab2a67ba2e4fdbfb1390e8bda65588147fe68e6c2b5fedece783f5a72d79d4cd9df901b4be6904fd2a2dcc0d2ff8f449ae9

Malware Config

Signatures

  • Detect Neshta Payload 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
    "C:\Users\Admin\AppData\Local\Temp\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3564
      • C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:532

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
    Filesize

    470KB

    MD5

    059bb09924b0d8cb7a8cffb72fd0bb03

    SHA1

    87a02be494bc914211d91a45a9ccbf4d47238566

    SHA256

    0abb52b3e0c08d5e3713747746b019692a05c5ab8783fd99b1300f11ea59b1c9

    SHA512

    12b6162e7604e5e8883c561037c785a1888a233c6ad3ffb1d502b8c973fca5200928991e59ff675c71d86e11c42d27910638c84d04b89ea4a266b74b58d1635f

  • C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
    Filesize

    470KB

    MD5

    059bb09924b0d8cb7a8cffb72fd0bb03

    SHA1

    87a02be494bc914211d91a45a9ccbf4d47238566

    SHA256

    0abb52b3e0c08d5e3713747746b019692a05c5ab8783fd99b1300f11ea59b1c9

    SHA512

    12b6162e7604e5e8883c561037c785a1888a233c6ad3ffb1d502b8c973fca5200928991e59ff675c71d86e11c42d27910638c84d04b89ea4a266b74b58d1635f

  • C:\Users\Admin\AppData\Local\Temp\3582-490\20cec0ab1019d005e76b8aafa3f7b3fe09e6e9bd981519f20ebb71c8e891395b.exe
    Filesize

    470KB

    MD5

    059bb09924b0d8cb7a8cffb72fd0bb03

    SHA1

    87a02be494bc914211d91a45a9ccbf4d47238566

    SHA256

    0abb52b3e0c08d5e3713747746b019692a05c5ab8783fd99b1300f11ea59b1c9

    SHA512

    12b6162e7604e5e8883c561037c785a1888a233c6ad3ffb1d502b8c973fca5200928991e59ff675c71d86e11c42d27910638c84d04b89ea4a266b74b58d1635f

  • memory/532-136-0x0000000000000000-mapping.dmp
  • memory/532-137-0x0000000000400000-0x0000000000436000-memory.dmp
    Filesize

    216KB

  • memory/532-139-0x00000000738D0000-0x0000000073E81000-memory.dmp
    Filesize

    5.7MB

  • memory/532-140-0x00000000738D0000-0x0000000073E81000-memory.dmp
    Filesize

    5.7MB

  • memory/3504-130-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/3564-131-0x0000000000000000-mapping.dmp
  • memory/3564-134-0x00000000738D0000-0x0000000073E81000-memory.dmp
    Filesize

    5.7MB

  • memory/3564-135-0x00000000738D0000-0x0000000073E81000-memory.dmp
    Filesize

    5.7MB

  • memory/3564-141-0x00000000738D0000-0x0000000073E81000-memory.dmp
    Filesize

    5.7MB