Overview

overview

10

Static

static

2e0a35235d...a5.exe

windows7_x64

10

2e0a35235d...a5.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

  • Size

    137KB

  • Sample

    220622-pr1acshba9

  • MD5

    2ccea0b6d24c740b88eb1ac98db1548f

  • SHA1

    38fc1c6b54b9d0804340d99f9e0c14bd566c4dad

  • SHA256

    2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

  • SHA512

    a0b225e1835efd43fb69b2c429da8bef2a30a518ab59940e9d35bab45cc37c1d5817ede5f07b5995ceec2d0d292fb850d736003a8222a43c8214432addce5d0e

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

    • Size

      137KB

    • MD5

      2ccea0b6d24c740b88eb1ac98db1548f

    • SHA1

      38fc1c6b54b9d0804340d99f9e0c14bd566c4dad

    • SHA256

      2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

    • SHA512

      a0b225e1835efd43fb69b2c429da8bef2a30a518ab59940e9d35bab45cc37c1d5817ede5f07b5995ceec2d0d292fb850d736003a8222a43c8214432addce5d0e

    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