Overview

overview

10

Static

static

28a3e10ac8...f7.exe

windows7_x64

10

28a3e10ac8...f7.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    28a3e10ac80eb640748d91ce23e6ab37ac41402122bb49803c1a37d3b48adbf7

  • Size

    108KB

  • Sample

    220615-vfsn2abbc7

  • MD5

    a7b95421785baa3381af20c176aece4f

  • SHA1

    20991f8fa8669bd25d468d1ab9ed9477438e7bfa

  • SHA256

    28a3e10ac80eb640748d91ce23e6ab37ac41402122bb49803c1a37d3b48adbf7

  • SHA512

    c70edcc1b4851ca1e4e65afe71d7b11156afc6d94e93ca4aac9c4dbb7661a1997fd18c8f91dd367ca1a809dec52aad850cf3b3ebbd381c5bb0d7bf32f3c54727

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      28a3e10ac80eb640748d91ce23e6ab37ac41402122bb49803c1a37d3b48adbf7

    • Size

      108KB

    • MD5

      a7b95421785baa3381af20c176aece4f

    • SHA1

      20991f8fa8669bd25d468d1ab9ed9477438e7bfa

    • SHA256

      28a3e10ac80eb640748d91ce23e6ab37ac41402122bb49803c1a37d3b48adbf7

    • SHA512

      c70edcc1b4851ca1e4e65afe71d7b11156afc6d94e93ca4aac9c4dbb7661a1997fd18c8f91dd367ca1a809dec52aad850cf3b3ebbd381c5bb0d7bf32f3c54727

    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