Overview

overview

10

Static

static

6f39843667...1d.exe

windows7_x64

10

6f39843667...1d.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    6f398436671f162e6674ddaa035640a7c913cd7aae3b6c33673a94fe9b937c1d

  • Size

    11.0MB

  • Sample

    220605-c5ybpsffh4

  • MD5

    8ece3688f9d0bbcaf5c1d427b248d3aa

  • SHA1

    6de52e16bfae27cd9ae1165f06de75dff5ff6a75

  • SHA256

    6f398436671f162e6674ddaa035640a7c913cd7aae3b6c33673a94fe9b937c1d

  • SHA512

    8d74bda26ed73fa2d37d12fedd41f8ad86dcfa166fcb85d2b604fde5697ea48afa67ae5039c4092b6e99fd76aa458b43a609ff4628e0f0b7257afc4611baabf9

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      6f398436671f162e6674ddaa035640a7c913cd7aae3b6c33673a94fe9b937c1d

    • Size

      11.0MB

    • MD5

      8ece3688f9d0bbcaf5c1d427b248d3aa

    • SHA1

      6de52e16bfae27cd9ae1165f06de75dff5ff6a75

    • SHA256

      6f398436671f162e6674ddaa035640a7c913cd7aae3b6c33673a94fe9b937c1d

    • SHA512

      8d74bda26ed73fa2d37d12fedd41f8ad86dcfa166fcb85d2b604fde5697ea48afa67ae5039c4092b6e99fd76aa458b43a609ff4628e0f0b7257afc4611baabf9

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

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

    • Deletes itself

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks