Overview

overview

10

Static

static

3

466a5771af...8c.exe

windows7-x64

10

466a5771af...8c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    524822a57adbb018c4aad349b4ff476993e18bc737ca0b7bd41c18093de019c0

  • Size

    170KB

  • Sample

    240417-qs9e4ahf62

  • MD5

    9817697bf62b4ea3a15bfd9a1632cea2

  • SHA1

    3f110baf41b1ad490f0376095881d78696fc907f

  • SHA256

    524822a57adbb018c4aad349b4ff476993e18bc737ca0b7bd41c18093de019c0

  • SHA512

    00e50fd96982eebe3295963f4c46137bf1cbb22982f127ca171a12dc488771fb7b8a368bec525f61bdb309209f390f4bfb1ab13991ade99496115fb7cf2b2cfc

  • SSDEEP

    3072:kjKwincI3cFYrf5hQaGXwt9H8WPS5YhsEXH2S1KvuiM6hTZKJHKeE1kg:kmwincEcFOhhoXwt9BPSyhlbEuiM6iJC

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      466a5771af26f4655cb6cfcf5616aa2acc11c58226bf440a7d0bb29f3a88968c.exe

    • Size

      317KB

    • MD5

      8cc6aec77fca66fc44286a1519bae1ee

    • SHA1

      35b395341b0b103bf511d653b05921dc89370a65

    • SHA256

      466a5771af26f4655cb6cfcf5616aa2acc11c58226bf440a7d0bb29f3a88968c

    • SHA512

      de7e960bd1204ef301828d970764e2161cef622d529db3f8f3b001656ed01dc9d890b6e9ef385ebf0f57187fb9c62c064b8804d800a685dec9fa715fcfe3bd51

    • SSDEEP

      6144:03BH8F8MzN7YBmGXZrNcyzpulx2x1dmv56:0xH8OMzWBLZ+yzQ3srW4

    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