Overview

overview

10

Static

static

3

3d24879020...c5.exe

windows7-x64

10

3d24879020...c5.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c75af78aee0af789556e3220005f5a1960ead0038de23208ec23d003106af521

  • Size

    151KB

  • Sample

    240417-r92bgsee3w

  • MD5

    b2ade24d5ddb38b33b136289b6ba2ebc

  • SHA1

    907814e6b029ee3d027eac0660eb18757f5fea46

  • SHA256

    c75af78aee0af789556e3220005f5a1960ead0038de23208ec23d003106af521

  • SHA512

    ed6d7fa24a2e0d0863a9493e53b4b930fe3b8b6d8c203a89c6ff49d77aa6624d95e0b35dafe99206be875d5b65e245491370a038d42314d288cd23e0fdb01615

  • SSDEEP

    3072:9gG875mhlIJLNJcQVXl8v77YBP8dZgp4xPCrB12j:tdIJLNuQd2U8dZgePEH2j

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      3d24879020f71f37768efb2dcd3724477b190b9f0c7f87c72edb472f81123ec5.exe

    • Size

      238KB

    • MD5

      761915a4ae82207a72f8b60786d00a97

    • SHA1

      0892117051b95db0240247a83d9798c103b05897

    • SHA256

      3d24879020f71f37768efb2dcd3724477b190b9f0c7f87c72edb472f81123ec5

    • SHA512

      6dbb4dbf15d9c9f086394b6a52a2d59736b8454f525bdb39253b1a289f511edcd5fe33c43c1baf0cfa2aba186710d5442d111ce2343a6f2a26c82913c1eb2d4c

    • SSDEEP

      3072:d/PLinbwusnVoPhS6dxuUo6U4Gn0gDbsw6QeKWl+4zQ/ZwBV7VP:d/PLCbxuUYGgDbskkwg

    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