Overview

overview

10

Static

static

10

863e4557e5...e1.exe

windows7_x64

10

863e4557e5...e1.exe

windows10_x64

10

Resubmissions

17-06-2021 13:31

210617-t6kkx9hs4j 10

Analysis

  • max time kernel
    89s
  • max time network
    115s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    17-06-2021 13:31

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General

  • Target

    863e4557e550dd89e5ca0e43c57a3fc1889145c76ec9787e97f76e959fc8e1e1.exe

  • Size

    128KB

  • MD5

    d687eb9fea18e6836bd572b2d180b144

  • SHA1

    0e7f076d59ab24ab04200415cb35037c619d0bae

  • SHA256

    863e4557e550dd89e5ca0e43c57a3fc1889145c76ec9787e97f76e959fc8e1e1

  • SHA512

    16aed099d7d1131facb76591176566a9de9a140948f467b7a43d7518215ce24490956b0996d0f7638cf0d313947f12d91d145ebe4d584779e119707d59463684

Score
10/10
targetcompanyevasionransomware

Malware Config

Extracted

Path

C:\Program Files\How to decrypt files.txt

Family

targetcompany

Ransom Note
Your personal identifier: 4FFBEE10F033 All files on TOHNICHI network have been encrypted due to insufficient security. The only way to quickly and reliably regain access to your files is to contact us. The price depends on how fast you write to us. In other cases, you risk losing your time and access to data. Usually time is much more valuable than money. FAQ Q: How to contact us A: * Download Tor Browser - https://www.torproject.org/ * Open link in Tor Browser http://eghv5cpdsmuj5e6tpyjk5icgq642hqubildf6yrfnqlq3rmsqk2zanid.onion/contact * Follow the instructions on the website. Q: What guarantees? A: Before paying, we can decrypt several of your test files. Files should not contain valuable information. Q: Can I decrypt my data for free or through intermediaries? A: Use third party programs and intermediaries at your own risk. Third party software may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price or you can become a victim of a scam.�
URLs

http://eghv5cpdsmuj5e6tpyjk5icgq642hqubildf6yrfnqlq3rmsqk2zanid.onion/contact

Signatures

  • TargetCompany

    Ransomware which encrypts files using a combination of ChaCha20, AES-128, and Curve25519, first seen in June 2021.

    ransomwaretargetcompany
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Generic Ransomware Note 64 IoCs

    Ransomware often writes a note containing information on how to pay the ransom.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\863e4557e550dd89e5ca0e43c57a3fc1889145c76ec9787e97f76e959fc8e1e1.exe
    "C:\Users\Admin\AppData\Local\Temp\863e4557e550dd89e5ca0e43c57a3fc1889145c76ec9787e97f76e959fc8e1e1.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Windows\System32\vssadmin.exe
      "C:\Windows\sysnative\vssadmin.exe" delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2604
    • C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4028
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2428
    • C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3264
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2948
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2180

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

3
T1490

Replay Monitor

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Downloads

  • memory/2428-117-0x0000000000000000-mapping.dmp
    Download
  • memory/2604-114-0x0000000000000000-mapping.dmp
    Download
  • memory/2948-118-0x0000000000000000-mapping.dmp
    Download
  • memory/3264-116-0x0000000000000000-mapping.dmp
    Download
  • memory/4028-115-0x0000000000000000-mapping.dmp
    Download