General
Target

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06

Size

113KB

Sample

220703-eaachaeadn

Score
10/10
MD5

bb99840487a3b6cd641612b2d02cd14a

SHA1

6231dd81359dbc961b572ed5191756c0d8f910f9

SHA256

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06

SHA512

ab420f39ef21cf0eebf395fe5506ef87ab02adab8f15366c9deecb17e5266ee88ade649e8cabc19d9538da579a2fec69983ae7e160fb48c35d21e95890112ce2

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets
Target

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06

MD5

bb99840487a3b6cd641612b2d02cd14a

Filesize

113KB

Score
10/10
SHA1

6231dd81359dbc961b572ed5191756c0d8f910f9

SHA256

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06

SHA512

ab420f39ef21cf0eebf395fe5506ef87ab02adab8f15366c9deecb17e5266ee88ade649e8cabc19d9538da579a2fec69983ae7e160fb48c35d21e95890112ce2

Tags

Signatures

  • Tofsee

    Description

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security ToolsModify Registry
  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Checks computer location settings

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Deletes itself

  • Suspicious use of SetThreadContext

Related Tasks

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

                    static1

                    Score
                    N/A

                    behavioral1

                    Score
                    10/10

                    behavioral2

                    Score
                    10/10