Overview

overview

10

Static

static

3

0becc5527a...e4.exe

windows7-x64

10

0becc5527a...e4.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    d5e6185ead4f18f0197f4df7cd5d98c5b77ef1f4bbd132d33e1e79a5610e76e2

  • Size

    159KB

  • Sample

    240417-p8ttxagc88

  • MD5

    f19a9db3c89bfe2c07b0c0d157022154

  • SHA1

    ffb406b199f5c03ff3e1410d13f003c3d7c9caa8

  • SHA256

    d5e6185ead4f18f0197f4df7cd5d98c5b77ef1f4bbd132d33e1e79a5610e76e2

  • SHA512

    5b49d3676515227e9c1221cc01129a81f253026a2fe8e3a733837edfd95b3aaba82b9f8b38ba85e984f870ae2cf3d442feacfe416bf2491659b87996925ca9c1

  • SSDEEP

    3072:kB2BpPROt7rqPXuIOyZs/6PAXhyZnh0YozNqco8cDRY4iL6qQ:LB9CyP+lyKigIZn+XzwcIY4io

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      0becc5527aba7dc1a746846fc3a2b62f2e46568819b2259d4474eb16e96b9be4.exe

    • Size

      258KB

    • MD5

      c604511f8c117ca36984e8aa66ac0a71

    • SHA1

      7ce156eb70e31fbdf62c3d7e60e6eefff7b21c7d

    • SHA256

      0becc5527aba7dc1a746846fc3a2b62f2e46568819b2259d4474eb16e96b9be4

    • SHA512

      031ffc652bd29c52b8ea733fa6a9e37c9908798d4121d0452c2e0207d17086f43451c273b686ef4c086fc859fe6cf906e403bd09008b11cfc2498ec338ae3441

    • SSDEEP

      3072:xkh5eI/cSz90u2DEJClClQoyLwETsrw/eEOobr6e7AXa2jyQfEBw0coqY7IQPJUD:xkh+BEQ0SBTRVOobrPXYES0cWEQRER

    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

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks