Analysis

  • max time kernel
    144s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 17:51

General

  • Target

    c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe

  • Size

    800KB

  • MD5

    0e89910a9cec4fbce83deed3d23b653c

  • SHA1

    534b29d9d2766717f4238b80745ae007591be946

  • SHA256

    c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41

  • SHA512

    d70b1af246253f71f7b88bad20e8ca38579ad5dac8ab09fd59538aaf00d08606ec6ed20fa7db043e9b424bc6bf99566e923b35280539338d92047a51dbc5f546

Malware Config

Extracted

Family

djvu

C2

http://ugll.org/test1/get.php

Attributes
  • extension

    .dfwe

  • offline_id

    eBNgvyGQV1Hmt9DBdxVRs8qPi1agsS7OaohPmit1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://ugll.org/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-j3AdKrnQie Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: admin@helpdata.top Reserve e-mail address to contact us: supportsys@airmail.cc Your personal ID: 0480JIjdm

rsa_pubkey.plain

Extracted

Family

vidar

Version

52.1

Botnet

517

C2

https://t.me/verstappenf1r

https://climatejustice.social/@ronxik312

Attributes
  • profile_id

    517

Signatures

  • Detected Djvu ransomware 8 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

  • suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

    suricata: ET MALWARE W32/Agent.OGR!tr.pws Stealer

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Public Key Download

  • suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

    suricata: ET MALWARE Win32/Filecoder.STOP Variant Request for Public Key

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

  • Vidar Stealer 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 3 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • 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.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe
    "C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe
      "C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f2166e2c-fa36-49ad-9521-f314cd27cfa4" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4800
      • C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe
        "C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3292
        • C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe
          "C:\Users\Admin\AppData\Local\Temp\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4592
          • C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe
            "C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1872
            • C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe
              "C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Modifies system certificate store
              • Suspicious behavior: EnumeratesProcesses
              PID:4100

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\mozglue.dll
    Filesize

    133KB

    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\nss3.dll
    Filesize

    1.2MB

    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    727B

    MD5

    93995ad095112907cfc088998c161574

    SHA1

    518c7127e11809bb74ff0f68ea7e86ea5aebc798

    SHA256

    fd16d238bcac3441688e7ca940c27bb02df8f0bf43b26d8e551414a18748c1cc

    SHA512

    c2a3153c65f0acbc821bf663b38591821402d9a00680e2e22f410bf1735752194c08b96f77b7e6712082584a8b6605f7ab9552ad2f6c193fbd13c90bb60436e9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\572BF21E454637C9F000BE1AF9B1E1A9
    Filesize

    506B

    MD5

    fb55008d5753f218c572d6845f73e063

    SHA1

    435165d22c8e2a9d29594cc7b99baf03d83ca676

    SHA256

    0fa825b66ca08110c0a45d7445a59438cdadfcad8eaf9a9116e1993e287356b0

    SHA512

    3d477652b5f40aceba3680aa38c3e4edef14be95a2997a9773fa0afd11c7ba584a40297501d2f383d4f4876a25e57c5264810b41f9ebf3b43a055a6781d36acf

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
    Filesize

    402B

    MD5

    e8ca8e00050c00229370314be646b0a8

    SHA1

    848f6006c6e22bad5f0e1686fc7de6988d88b70e

    SHA256

    8c10fe5e31adb1e75d33524a614c9f546aa079661d6a5269b0ce2aeb81e30fb6

    SHA512

    28c2bf0fc2b8e4dd1263c35c8c84e4a5dc30e2a07a34cb54730d207ca4886738d02f7f5492c38eaedf5c2282a2a27b7c7d5dadd9dfd49663cb6eade51d6751a9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\572BF21E454637C9F000BE1AF9B1E1A9
    Filesize

    248B

    MD5

    e63f22a5f30f947931ca913667156202

    SHA1

    592722d46aa17a3a602af400e0095741c25dc99f

    SHA256

    4d2cc7f59682e3ea9e1ff51f7b31df32873e2d03fa53850a4335271a1f95eb15

    SHA512

    20d6b99a311d09a5d3b5346c7bcf9d9e08f1c53431b933b394931f8b7dd5f107b1067a937fedccf2abb48a9c1cd78aa4c2a8981c759aaeb92f244ecad1fe35b3

  • C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\99eb686c-55f9-4650-b5a8-ce58164568b8\build2.exe
    Filesize

    367KB

    MD5

    3107999f9600f5f2bc88e17282da2773

    SHA1

    8862f9551fdb7dc30e135c556751b973f441e7b4

    SHA256

    aacab9cbbf292403a63bcfd1f6f0a9e534ac39aab406f2c9d7aa98b719f3801f

    SHA512

    50c66565fc457b848014eaf70b3f7cc408e8a818bd29c80daf53597a44c182d26649c249a6e3fe7e6516fc7ff7e7026f3aff4b25ee48645789fa6cd3d3e2f338

  • C:\Users\Admin\AppData\Local\f2166e2c-fa36-49ad-9521-f314cd27cfa4\c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41.exe
    Filesize

    800KB

    MD5

    0e89910a9cec4fbce83deed3d23b653c

    SHA1

    534b29d9d2766717f4238b80745ae007591be946

    SHA256

    c22562bc0f83a694f81fe0e40265f6fedc395c8bcef278f154a49d8698f4ec41

    SHA512

    d70b1af246253f71f7b88bad20e8ca38579ad5dac8ab09fd59538aaf00d08606ec6ed20fa7db043e9b424bc6bf99566e923b35280539338d92047a51dbc5f546

  • memory/1720-131-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1720-130-0x0000000000000000-mapping.dmp
  • memory/1720-132-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1720-136-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1720-135-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/1752-134-0x0000000004A80000-0x0000000004B9B000-memory.dmp
    Filesize

    1.1MB

  • memory/1752-133-0x000000000494C000-0x00000000049DE000-memory.dmp
    Filesize

    584KB

  • memory/1872-159-0x00000000020F0000-0x0000000002139000-memory.dmp
    Filesize

    292KB

  • memory/1872-157-0x0000000000766000-0x0000000000791000-memory.dmp
    Filesize

    172KB

  • memory/1872-150-0x0000000000000000-mapping.dmp
  • memory/3292-143-0x000000000487C000-0x000000000490E000-memory.dmp
    Filesize

    584KB

  • memory/3292-139-0x0000000000000000-mapping.dmp
  • memory/4100-158-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4100-154-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4100-153-0x0000000000000000-mapping.dmp
  • memory/4100-156-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4100-160-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/4100-161-0x0000000060900000-0x0000000060992000-memory.dmp
    Filesize

    584KB

  • memory/4592-149-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4592-144-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4592-142-0x0000000000400000-0x0000000000537000-memory.dmp
    Filesize

    1.2MB

  • memory/4592-140-0x0000000000000000-mapping.dmp
  • memory/4800-137-0x0000000000000000-mapping.dmp