Overview

overview

10

Static

static

3

f379c2c732...be.exe

windows7-x64

10

f379c2c732...be.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ec0c5d09960de9aa001e994e07155bfae016bc5b90e64c1d301021e4abf6ae64

  • Size

    145KB

  • Sample

    240417-r6948aec5w

  • MD5

    ae82cb83c2730b6445f8da3d90cea402

  • SHA1

    2e64945a9dbe45b3d6d6b7e6dc76dbd846539909

  • SHA256

    ec0c5d09960de9aa001e994e07155bfae016bc5b90e64c1d301021e4abf6ae64

  • SHA512

    fbf603c4ac8b397a21e4f3cece08d669d1b7892a09d28318001db8e2df55b6c6bbde9b3f2f6a9d2278d239f85fe69b0c503fa9441e20caab8c0f6b00693fb961

  • SSDEEP

    3072:auub4z1DxowMi99Hg+1z+tKi8/8J5uITYEsK0tvH+ptmHWs:aNbMXowBg2zrkJc5vqtmH3

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      f379c2c732470dbce8e17423baf7f6fcca63bcb13c4ade33a15df1225e3841be.exe

    • Size

      232KB

    • MD5

      b5f3dc95c09fa3bfdf009a404736f94e

    • SHA1

      03e471e7edf9bbcbe2483ebd1ba05364c93a190a

    • SHA256

      f379c2c732470dbce8e17423baf7f6fcca63bcb13c4ade33a15df1225e3841be

    • SHA512

      f63cba660384d5296e2f8aeeceba1a2d4707311a242cd5f12220008670cb5c2bf686b546fafe03cc6c5363bd62fe4c067a1f9dc73a8388488e13854b631ee546

    • SSDEEP

      6144:j6zxC0r84BWnfZUH7SFcQU+9HFsvKMXOCU:kY0r9BeZUbSiy9HSvKwO

    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