Overview

overview

10

Static

static

3

b094dc323b...7c.exe

windows7-x64

10

b094dc323b...7c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b094dc323b723414751f786f6734256e4b8027b54e505f5bdada9de1b5a1297c

  • Size

    236KB

  • Sample

    240719-q1rv1stfrr

  • MD5

    2b2b84bbc5e66eee80967ca156c41ce7

  • SHA1

    72c4caae5360f2c4d9c82ad955cd1b039576827f

  • SHA256

    b094dc323b723414751f786f6734256e4b8027b54e505f5bdada9de1b5a1297c

  • SHA512

    7551a325e564cf8cef82560c89fe31b222627a207a55d01656ff362715ae9ec1138e0ccd23181de9aab9e754f771b7bfb96ca55e5280ed3f228820a857cd6fff

  • SSDEEP

    3072:sKqzQ0Lk5DYZJCegjl8Td8laN5zi1nYf2bInzyX0aJcGNt4z:sKqYizCegjln65yy2knzyXJqy4

Score
10/10
tofseeevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      b094dc323b723414751f786f6734256e4b8027b54e505f5bdada9de1b5a1297c

    • Size

      236KB

    • MD5

      2b2b84bbc5e66eee80967ca156c41ce7

    • SHA1

      72c4caae5360f2c4d9c82ad955cd1b039576827f

    • SHA256

      b094dc323b723414751f786f6734256e4b8027b54e505f5bdada9de1b5a1297c

    • SHA512

      7551a325e564cf8cef82560c89fe31b222627a207a55d01656ff362715ae9ec1138e0ccd23181de9aab9e754f771b7bfb96ca55e5280ed3f228820a857cd6fff

    • SSDEEP

      3072:sKqzQ0Lk5DYZJCegjl8Td8laN5zi1nYf2bInzyX0aJcGNt4z:sKqYizCegjln65yy2knzyXJqy4

    Score
    10/10
    tofseeevasionexecutionpersistenceprivilege_escalationtrojan

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks