Overview

overview

10

Static

static

36dd37703b...01.exe

windows7_x64

10

36dd37703b...01.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    36dd37703b6b84eb31184299be5935fd79e46b4c7b9a3f7c2bbdd73a9bedb701

  • Size

    108KB

  • Sample

    220626-bljtjaddc7

  • MD5

    3a7c9b7345930efda1b033b5ffd6888c

  • SHA1

    cce9d9ece4bbf8666894d3d52ba3bcf243140a12

  • SHA256

    36dd37703b6b84eb31184299be5935fd79e46b4c7b9a3f7c2bbdd73a9bedb701

  • SHA512

    8b76eba6a981f493b1afac3a39d62f2c91eb1919dcb439f9d9b6aa86bce20e8c66c7a91f33d0f64244cde8c974a5cffe70384320db388b71d268f9e3938d0d9a

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      36dd37703b6b84eb31184299be5935fd79e46b4c7b9a3f7c2bbdd73a9bedb701

    • Size

      108KB

    • MD5

      3a7c9b7345930efda1b033b5ffd6888c

    • SHA1

      cce9d9ece4bbf8666894d3d52ba3bcf243140a12

    • SHA256

      36dd37703b6b84eb31184299be5935fd79e46b4c7b9a3f7c2bbdd73a9bedb701

    • SHA512

      8b76eba6a981f493b1afac3a39d62f2c91eb1919dcb439f9d9b6aa86bce20e8c66c7a91f33d0f64244cde8c974a5cffe70384320db388b71d268f9e3938d0d9a

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

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

      trojantofsee

    • 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

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