Overview

overview

10

Static

static

3

23922e5ee3...12.exe

windows7-x64

10

23922e5ee3...12.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    23922e5ee3a9ff743df4b5f29cb099c6e7ab41d64ffb4123b8a8fde439f5b012

  • Size

    12.1MB

  • Sample

    240511-j8m4gage3w

  • MD5

    db1af63eff5afab4bede9ffd3886b91a

  • SHA1

    5030c06972023757b7d001fa12b02aadc07c3054

  • SHA256

    23922e5ee3a9ff743df4b5f29cb099c6e7ab41d64ffb4123b8a8fde439f5b012

  • SHA512

    97632ddd6e8efa10bfc648500fe39ac4f9650fc512a763b86a454a03c8512450dfef0156b925ee30ea30e5b617ac13810e3d8c90f4accfc9ccf9b9a99d88a62c

  • SSDEEP

    196608:WT66666666666666666666666666666666666666666666666666666666666662:W

Score
10/10
tofseeevasionexecutionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Targets

    • Target

      23922e5ee3a9ff743df4b5f29cb099c6e7ab41d64ffb4123b8a8fde439f5b012

    • Size

      12.1MB

    • MD5

      db1af63eff5afab4bede9ffd3886b91a

    • SHA1

      5030c06972023757b7d001fa12b02aadc07c3054

    • SHA256

      23922e5ee3a9ff743df4b5f29cb099c6e7ab41d64ffb4123b8a8fde439f5b012

    • SHA512

      97632ddd6e8efa10bfc648500fe39ac4f9650fc512a763b86a454a03c8512450dfef0156b925ee30ea30e5b617ac13810e3d8c90f4accfc9ccf9b9a99d88a62c

    • SSDEEP

      196608:WT66666666666666666666666666666666666666666666666666666666666662:W

    Score
    10/10
    tofseeevasionexecutionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistenceexecution

    • 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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

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