Overview

overview

10

Static

static

1e2a56bfb2...6e.exe

windows7_x64

10

1e2a56bfb2...6e.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    1e2a56bfb27bbdef81f7fb668e42e104e0ac2503ee75710e0a057cec0c6df76e

  • Size

    142KB

  • Sample

    220612-1vp5cadbg6

  • MD5

    88c17f3f1763b8423d393baba1e9b4c7

  • SHA1

    c11443fcf1f4571548045b4b607dc28a8d0e01b8

  • SHA256

    1e2a56bfb27bbdef81f7fb668e42e104e0ac2503ee75710e0a057cec0c6df76e

  • SHA512

    81e61204ed87245c027097a948398675d0a42de3789fa0424046885fd87dcacfcff852163e215f2b9ac83578c3ad47f896363d0d843f1bef17a9b2051a998203

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      1e2a56bfb27bbdef81f7fb668e42e104e0ac2503ee75710e0a057cec0c6df76e

    • Size

      142KB

    • MD5

      88c17f3f1763b8423d393baba1e9b4c7

    • SHA1

      c11443fcf1f4571548045b4b607dc28a8d0e01b8

    • SHA256

      1e2a56bfb27bbdef81f7fb668e42e104e0ac2503ee75710e0a057cec0c6df76e

    • SHA512

      81e61204ed87245c027097a948398675d0a42de3789fa0424046885fd87dcacfcff852163e215f2b9ac83578c3ad47f896363d0d843f1bef17a9b2051a998203

    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