Overview

overview

10

Static

static

23197502be...55.exe

windows7_x64

10

23197502be...55.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    23197502be28aab6501b23608fd0f3d82bbf096fd990db91f6bbfc1dc41ff855

  • Size

    101KB

  • Sample

    220612-c8243afbh5

  • MD5

    fc3b31c8214d209f6783baedfbfd514b

  • SHA1

    f457e855dea420e7ae69129d1437b31c33b78d25

  • SHA256

    23197502be28aab6501b23608fd0f3d82bbf096fd990db91f6bbfc1dc41ff855

  • SHA512

    6232c34e88c1da8fd9d13cd6c81bce59b7552ade20d2e0df736334ae96f9501eb1e63f4f3dbc207e8096c7e3a2111db2c73067c84b50a6da2a62285c789d7eb4

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      23197502be28aab6501b23608fd0f3d82bbf096fd990db91f6bbfc1dc41ff855

    • Size

      101KB

    • MD5

      fc3b31c8214d209f6783baedfbfd514b

    • SHA1

      f457e855dea420e7ae69129d1437b31c33b78d25

    • SHA256

      23197502be28aab6501b23608fd0f3d82bbf096fd990db91f6bbfc1dc41ff855

    • SHA512

      6232c34e88c1da8fd9d13cd6c81bce59b7552ade20d2e0df736334ae96f9501eb1e63f4f3dbc207e8096c7e3a2111db2c73067c84b50a6da2a62285c789d7eb4

    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