tofsee | a76d1b8d639dd74017ff5501f34a3cb2b59a0730b87a3663c82137a523ef23e3 | Triage

Sharing

General

Target

f1bcb7d5244183f7769af344a006781e_JaffaCakes118
Size

13.1MB
Sample

240415-x3d59sea46
MD5

f1bcb7d5244183f7769af344a006781e
SHA1

9a4fb8b9d36d1093b907bd00beb2244d13383300
SHA256

a76d1b8d639dd74017ff5501f34a3cb2b59a0730b87a3663c82137a523ef23e3
SHA512

8976637ed27c92e7f1a036e33885091a075727d1b56b4ecccddb9b02121d54e539888ebe7ef09dca410691fa41311fdfe73cb69a96c8134e70130e69d77b54f5
SSDEEP

49152:T1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:TA

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

- Target
  
  f1bcb7d5244183f7769af344a006781e_JaffaCakes118
- Size
  
  13.1MB
- MD5
  
  f1bcb7d5244183f7769af344a006781e
- SHA1
  
  9a4fb8b9d36d1093b907bd00beb2244d13383300
- SHA256
  
  a76d1b8d639dd74017ff5501f34a3cb2b59a0730b87a3663c82137a523ef23e3
- SHA512
  
  8976637ed27c92e7f1a036e33885091a075727d1b56b4ecccddb9b02121d54e539888ebe7ef09dca410691fa41311fdfe73cb69a96c8134e70130e69d77b54f5
- SSDEEP
  
  49152:T1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:TA
Score

10^/10

tofsee evasion 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
- 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
- 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

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

tofseeevasionpersistencetrojan

behavioral2

tofseeevasionpersistencetrojan