841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

General
Target

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

Size

759KB

Sample

220521-xet7ksbeg4

Score
10 /10
MD5

617b2beb7fd1f162b3a552a2906b5b1b

SHA1

c542b59788570f5334d4ea9b3c85661ee01f0fd3

SHA256

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

SHA512

c17cd4c6b05a38b69cffb655a7cb6c27a38f33ed95e43985beb89c7a7ff99a3903f146fd1e4f6398ce5dbf5cffd96a47606c8a6919b5b6f23c30e6c0b90532c0

Malware Config

Extracted

Family djvu
C2

http://cjto.top/nddddhsspen6/get.php

Attributes
extension
.geno
offline_id
Gq9C3wfB3EovXBFkGxv1b5wkUKUxVy1x63fasTt1
payload_url
http://cjto.top/files/penelop/updatewin1.exe
http://cjto.top/files/penelop/updatewin2.exe
http://cjto.top/files/penelop/updatewin.exe
http://cjto.top/files/penelop/3.exe
http://cjto.top/files/penelop/4.exe
http://cjto.top/files/penelop/5.exe
ransomnote
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rsa_pubkey.plain
Targets
Target

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

MD5

617b2beb7fd1f162b3a552a2906b5b1b

Filesize

759KB

Score
10/10
SHA1

c542b59788570f5334d4ea9b3c85661ee01f0fd3

SHA256

841c411cb975d201002933442dfd995194f098254d7d6762128d222a2f5a18b1

SHA512

c17cd4c6b05a38b69cffb655a7cb6c27a38f33ed95e43985beb89c7a7ff99a3903f146fd1e4f6398ce5dbf5cffd96a47606c8a6919b5b6f23c30e6c0b90532c0

Tags

Signatures

  • Detected Djvu ransomware

  • Djvu Ransomware

    Description

    Ransomware which is a variant of the STOP family.

    Tags

  • suricata: ET MALWARE APT-C-23 Activity (GET)

    Description

    suricata: ET MALWARE APT-C-23 Activity (GET)

    Tags

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

    Description

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    Tags

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

    Description

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

    Tags

  • suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    Description

    suricata: ET MALWARE Win32/Vodkagats Loader Requesting Payload

    Tags

  • Executes dropped EXE

  • Checks computer location settings

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Modifies file permissions

    Tags

    TTPs

    File Permissions Modification
  • Adds Run key to start application

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Looks up external IP address via web service

    Description

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

Related Tasks

MITRE ATT&CK Matrix
Collection
    Command and Control
      Credential Access
        Execution
          Exfiltration
            Impact
              Initial Access
                Lateral Movement
                  Privilege Escalation