Overview

overview

10

Static

static

2391d4e6b0...88.exe

windows7_x64

10

2391d4e6b0...88.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488

  • Size

    142KB

  • Sample

    220612-bfkhwafgdr

  • MD5

    c20d3f9c5dcd93a3dfd3b6e9aeea2541

  • SHA1

    c829d1ab536df96bcc67f136c8453b51e8407934

  • SHA256

    2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488

  • SHA512

    4dec42790939d1d486de2c43e802583c60ff984f1c7ed4c40b744635f3a0ec2c8c9c49c3bb6f2d1942cab0da21f61a62a62aaa07381cbc841ef5a49adf3195d9

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488

    • Size

      142KB

    • MD5

      c20d3f9c5dcd93a3dfd3b6e9aeea2541

    • SHA1

      c829d1ab536df96bcc67f136c8453b51e8407934

    • SHA256

      2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488

    • SHA512

      4dec42790939d1d486de2c43e802583c60ff984f1c7ed4c40b744635f3a0ec2c8c9c49c3bb6f2d1942cab0da21f61a62a62aaa07381cbc841ef5a49adf3195d9

    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