tofsee | 3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f | Triage

Sharing

General

Target

3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f
Size

11.4MB
Sample

240529-j2e5aagg92
MD5

9976381d1866b0994d0aaf96d002cb8b
SHA1

e4d9df609a9011ccf1bf01b04677cfdf07e7407e
SHA256

3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f
SHA512

d6c26012dc4cfc0353cc85c09ba9b31c398ba36193df63f0d5231d758429faef03b6403fe41748c901860bded1a83f07d40412149ecb2935346384fb1e8ff716
SSDEEP

3072:kyBNbfF6eAnc2Tzx4QL0YNmHhBZ03eYqqOkkYe0jNC4vj5MLIFBX/BX/BX/BX/BX:3rnAnXTz6Qwf87qqrk16M4o

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

- Target
  
  3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f
- Size
  
  11.4MB
- MD5
  
  9976381d1866b0994d0aaf96d002cb8b
- SHA1
  
  e4d9df609a9011ccf1bf01b04677cfdf07e7407e
- SHA256
  
  3f417ded6a57a6a15a5417c7c360ae0089130af33cc1cc0a8d135321860b034f
- SHA512
  
  d6c26012dc4cfc0353cc85c09ba9b31c398ba36193df63f0d5231d758429faef03b6403fe41748c901860bded1a83f07d40412149ecb2935346384fb1e8ff716
- SSDEEP
  
  3072:kyBNbfF6eAnc2Tzx4QL0YNmHhBZ03eYqqOkkYe0jNC4vj5MLIFBX/BX/BX/BX/BX:3rnAnXTz6Qwf87qqrk16M4o
Score

10^/10

tofsee evasion execution persistence trojan
- Tofsee
  Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
  trojan tofsee
- Windows security bypass
  evasion trojan
- Creates new service(s)
  persistence execution
- 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
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

Service Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Defense Evasion

Impair Defenses

Disable or Modify System Firewall

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

tofseeevasionexecutionpersistencetrojan

behavioral2

tofseeevasionexecutionpersistencetrojan