Overview

overview

10

Static

static

4ef85c0f2c...26.exe

windows7-x64

3

4ef85c0f2c...26.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4ef85c0f2ce70bc76c375fda3fb402e9a8dc49da9479420041d0b1a65485ab26

  • Size

    352KB

  • Sample

    220720-tc1d2aaeek

  • MD5

    4cd1b3d48dddbe8295bc6cdec7d2d247

  • SHA1

    ad8f58fd239f0531c6096699f8545c4ff0d79f9b

  • SHA256

    4ef85c0f2ce70bc76c375fda3fb402e9a8dc49da9479420041d0b1a65485ab26

  • SHA512

    68f9d72d1cc8fb24ee0865f260de95b532e87fe0f1b34e5f0f30f6838e9ade77841832697e3720bef5d94a928ab631a763828d3d69e6a8e2ed772dacd4c68378

Score
10/10
tofseepersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

103.232.222.57

111.121.193.242

123.249.0.22

Targets

    • Target

      4ef85c0f2ce70bc76c375fda3fb402e9a8dc49da9479420041d0b1a65485ab26

    • Size

      352KB

    • MD5

      4cd1b3d48dddbe8295bc6cdec7d2d247

    • SHA1

      ad8f58fd239f0531c6096699f8545c4ff0d79f9b

    • SHA256

      4ef85c0f2ce70bc76c375fda3fb402e9a8dc49da9479420041d0b1a65485ab26

    • SHA512

      68f9d72d1cc8fb24ee0865f260de95b532e87fe0f1b34e5f0f30f6838e9ade77841832697e3720bef5d94a928ab631a763828d3d69e6a8e2ed772dacd4c68378

    Score
    10/10
    tofseepersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks