Overview

overview

10

Static

static

5ff46bca8d...f0.exe

windows7-x64

10

5ff46bca8d...f0.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5ff46bca8d033a58673c281fa26b7158c1d11ba6eca99a1553e2651fbb0256f0

  • Size

    150KB

  • Sample

    220731-jr651sgcem

  • MD5

    0c3e9598600bccf1d8b874bdda869bca

  • SHA1

    aeb7cd8f3f96fc4113fed76d86fa2434f2069e5e

  • SHA256

    5ff46bca8d033a58673c281fa26b7158c1d11ba6eca99a1553e2651fbb0256f0

  • SHA512

    6a47074a26686433edd0ebdc0573fb3541328cecc2f87421c49bf2c0a5087e36ce3a9f7d3438c37229f9b182f31e3509cd5e3c4941583a946ea777cb5909fb31

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      5ff46bca8d033a58673c281fa26b7158c1d11ba6eca99a1553e2651fbb0256f0

    • Size

      150KB

    • MD5

      0c3e9598600bccf1d8b874bdda869bca

    • SHA1

      aeb7cd8f3f96fc4113fed76d86fa2434f2069e5e

    • SHA256

      5ff46bca8d033a58673c281fa26b7158c1d11ba6eca99a1553e2651fbb0256f0

    • SHA512

      6a47074a26686433edd0ebdc0573fb3541328cecc2f87421c49bf2c0a5087e36ce3a9f7d3438c37229f9b182f31e3509cd5e3c4941583a946ea777cb5909fb31

    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

    • Drops file in System32 directory

    • 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

3
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks