tofsee | b3849e6d7b97c3d7e4f1668975783d4432a38b6d4f0c5970d9206871de2caa82 | Triage

Sharing

General

Target

fdf2c167e3038cd40538ca5a83bddd48_JaffaCakes118
Size

14.1MB
Sample

240420-3ysqradg8t
MD5

fdf2c167e3038cd40538ca5a83bddd48
SHA1

ac0c3a598aa28568a5d28d1fc262207f0345c5bc
SHA256

b3849e6d7b97c3d7e4f1668975783d4432a38b6d4f0c5970d9206871de2caa82
SHA512

7cc57649f935d385403e1202c6774b6eda4f79f80aa07cfdd49924368a201d5f0ad3680f0086a912495b7b0db3afea2240d75a1569af99ff8676cdc4c6fb24cb
SSDEEP

6144:Li0TTXfKNnKjmm+AJl6MBK0/etgnc0ArFuyXgWNInP:lKNKjmm+AJlznetgABufeI

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

Targets

- Target
  
  fdf2c167e3038cd40538ca5a83bddd48_JaffaCakes118
- Size
  
  14.1MB
- MD5
  
  fdf2c167e3038cd40538ca5a83bddd48
- SHA1
  
  ac0c3a598aa28568a5d28d1fc262207f0345c5bc
- SHA256
  
  b3849e6d7b97c3d7e4f1668975783d4432a38b6d4f0c5970d9206871de2caa82
- SHA512
  
  7cc57649f935d385403e1202c6774b6eda4f79f80aa07cfdd49924368a201d5f0ad3680f0086a912495b7b0db3afea2240d75a1569af99ff8676cdc4c6fb24cb
- SSDEEP
  
  6144:Li0TTXfKNnKjmm+AJl6MBK0/etgnc0ArFuyXgWNInP:lKNKjmm+AJlznetgABufeI
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