Overview

overview

10

Static

static

3576d8e57c...55.exe

windows7_x64

10

3576d8e57c...55.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    3576d8e57c835f522ebaa917700dbabecc817dcdc7b4d21d2b155e7fe4977455

  • Size

    104KB

  • Sample

    220627-aegvxsfgdm

  • MD5

    67260c5c5215244985a54f8c8092bc8d

  • SHA1

    5d8c9edaee2219781a8488f21fdb1e193b8dc8a6

  • SHA256

    3576d8e57c835f522ebaa917700dbabecc817dcdc7b4d21d2b155e7fe4977455

  • SHA512

    f31c7f275b42366eed39d5517be6a406645929c92bc6a471a1ebbc83ed1318c0c23982dca33b3351fd2088a335b213ef3db45fa6ba025c00b13a5427ae13e2df

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      3576d8e57c835f522ebaa917700dbabecc817dcdc7b4d21d2b155e7fe4977455

    • Size

      104KB

    • MD5

      67260c5c5215244985a54f8c8092bc8d

    • SHA1

      5d8c9edaee2219781a8488f21fdb1e193b8dc8a6

    • SHA256

      3576d8e57c835f522ebaa917700dbabecc817dcdc7b4d21d2b155e7fe4977455

    • SHA512

      f31c7f275b42366eed39d5517be6a406645929c92bc6a471a1ebbc83ed1318c0c23982dca33b3351fd2088a335b213ef3db45fa6ba025c00b13a5427ae13e2df

    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