Overview

overview

10

Static

static

03c3bf89ec...a9.exe

windows7-x64

10

03c3bf89ec...a9.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

  • Size

    127KB

  • Sample

    221130-t7fywaba6y

  • MD5

    26f79e78a4b445e1da768ce79e82c95b

  • SHA1

    3aedd60770c0179990df20eb9bfc81904297c10d

  • SHA256

    03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

  • SHA512

    ace209673d901058793d806c3d033d5c676d33898fc032b39b23f8c4a241694f0e7dba14968076494b64d4d687bd0391d69ab9689e46ef99d076a41983a94e39

  • SSDEEP

    3072:DR9RULLkf1SfmmzUhJUVWZ3KOcPpKEK6ARbF:DZaLq1SfmmIoi6BPprKbF

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

    • Size

      127KB

    • MD5

      26f79e78a4b445e1da768ce79e82c95b

    • SHA1

      3aedd60770c0179990df20eb9bfc81904297c10d

    • SHA256

      03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

    • SHA512

      ace209673d901058793d806c3d033d5c676d33898fc032b39b23f8c4a241694f0e7dba14968076494b64d4d687bd0391d69ab9689e46ef99d076a41983a94e39

    • SSDEEP

      3072:DR9RULLkf1SfmmzUhJUVWZ3KOcPpKEK6ARbF:DZaLq1SfmmIoi6BPprKbF

    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