tofsee | d283e5ff7df8693ac522865b0c89662cbdba58fbd83e6404af2736656285c1e4 | Triage

Sharing

General

Target

1d497f3b11e46c0aefa710db28433fc0_NeikiAnalytics.exe
Size

241KB
Sample

240527-d946gseh9x
MD5

1d497f3b11e46c0aefa710db28433fc0
SHA1

3d2f7ab0e0eb623d7560fd20f5457961cbdbc42e
SHA256

d283e5ff7df8693ac522865b0c89662cbdba58fbd83e6404af2736656285c1e4
SHA512

a224bcd0406e0d4d4ba4680dbaea86fefbd43c57aa79701fe7397d88627f764f421c894a81397d5dcec8436aa17f596c96d80a649e4187e7540de98e23c66f61
SSDEEP

3072:Re1H2+C3A2QSr4Adea6S5y7oBlD5uURUI:A1HC3P4K5moBy3

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

- Target
  
  1d497f3b11e46c0aefa710db28433fc0_NeikiAnalytics.exe
- Size
  
  241KB
- MD5
  
  1d497f3b11e46c0aefa710db28433fc0
- SHA1
  
  3d2f7ab0e0eb623d7560fd20f5457961cbdbc42e
- SHA256
  
  d283e5ff7df8693ac522865b0c89662cbdba58fbd83e6404af2736656285c1e4
- SHA512
  
  a224bcd0406e0d4d4ba4680dbaea86fefbd43c57aa79701fe7397d88627f764f421c894a81397d5dcec8436aa17f596c96d80a649e4187e7540de98e23c66f61
- SSDEEP
  
  3072:Re1H2+C3A2QSr4Adea6S5y7oBlD5uURUI:A1HC3P4K5moBy3
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
- 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
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