tofsee | e9a144f45ff4fa0e1cb4e90bd65284c86dfcff9651ded99d62af4d045e1d700e | Triage

Sharing

General

Target

e9a144f45ff4fa0e1cb4e90bd65284c86dfcff9651ded99d62af4d045e1d700e
Size

128KB
Sample

240417-qtg28shf74
MD5

f573a4365fa3ef0d8a1e4886061dcbe6
SHA1

25494c932525a5bc9cb79a953422a116a72717a6
SHA256

e9a144f45ff4fa0e1cb4e90bd65284c86dfcff9651ded99d62af4d045e1d700e
SHA512

d51e6ec67391309eda4d2ef0656feeba2a6b1eda922af661e103c4079325860b08b9c8204c12611ad470b043685d493c42047549e0f2d80a1a0ec99c9a8fed78
SSDEEP

3072:Ign6A1NUyqIt1VqPGJNzFrXzBVi0k8hU6T84l3:hn6A4It1UKzZXljTbl3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

- Target
  
  900f15042c99288aef15c9187640b625ffec568147dd761f1508e9b61cc174d7.exe
- Size
  
  204KB
- MD5
  
  1f57a9bb99804b8193ef503404bb7387
- SHA1
  
  674710911110b4b45030b990dabb3c45fd095b3f
- SHA256
  
  900f15042c99288aef15c9187640b625ffec568147dd761f1508e9b61cc174d7
- SHA512
  
  d93b6d24f3fdb267a0d43195bbba3494cb2734756e5e3090cea9e65c584d66ca5eb1842bda274f484a42dac89f2fb196a2ef83e9f8e70dad4ca4b1351c3acce7
- SSDEEP
  
  3072:qfrB/GLaZdXUNc8iirJiM21K7uu+5Oiq08tJz5zoy887jImQpeBNMRDx/+cmH:qfrwclVORxv5z8kI1x2co
Score

10^/10

tofsee evasion persistence trojan
- Tofsee
  Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
  trojan tofsee
- 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
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

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

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

tofseeevasionpersistencetrojan

behavioral2

tofseeevasionpersistencetrojan