Overview

overview

10

Static

static

19ebf45aa8...dd.exe

windows7_x64

10

19ebf45aa8...dd.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd

  • Size

    288KB

  • Sample

    220608-flf5vseah8

  • MD5

    ffaa945215f29ebe8b8f0c1028e5c01e

  • SHA1

    b6f02fa269199d9fff4dbfc8f1e0914047de38f5

  • SHA256

    19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd

  • SHA512

    1758960ab2c5265440e4b1b02b8cdabe9de43dedd5dc16e4050be5a6b340764a83f0abc967c358f6dfc4714c8b6782592bf2ba91a0070888d62e67bca3310976

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd

    • Size

      288KB

    • MD5

      ffaa945215f29ebe8b8f0c1028e5c01e

    • SHA1

      b6f02fa269199d9fff4dbfc8f1e0914047de38f5

    • SHA256

      19ebf45aa894088f39bf724dd04bf7873f10ef7150335d1e7178f9773b71dddd

    • SHA512

      1758960ab2c5265440e4b1b02b8cdabe9de43dedd5dc16e4050be5a6b340764a83f0abc967c358f6dfc4714c8b6782592bf2ba91a0070888d62e67bca3310976

    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