tofsee | a9c79d6a8cfcbd21d8ef5aa56036d50a393dda9e4a56c541d8c6b11253b0a485 | Triage

Sharing

General

Target

a9c79d6a8cfcbd21d8ef5aa56036d50a393dda9e4a56c541d8c6b11253b0a485
Size

141KB
Sample

240417-rj1l9sbd34
MD5

cbe58673cf8626741486b02bd8a20860
SHA1

7b161eb00f5501a254cff39a21e64e03adb1dc75
SHA256

a9c79d6a8cfcbd21d8ef5aa56036d50a393dda9e4a56c541d8c6b11253b0a485
SHA512

0b37851324e0f953625b551b5c539c7578eafbc506ffc1fa4aad0ecace27e10fa1faa577a5101adb992bfd4cd21c6f7929ef6e01a74c4e1b0ed819d1dd02703e
SSDEEP

3072:eMFHYIn8etGOUfFK2RJZ8hCR4dMYBJMFJEE9rXF2W9rhWiPS3rKZLtCxP:DFvlGr99XZaQtYoFJEiL4MIra+

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

- Target
  
  a7c2b8d081407da5d72f12eeef21c11674ff616c89be40f73f114c292c09e6de.exe
- Size
  
  227KB
- MD5
  
  1010b86bd744c31ecef5f5aeae5ca6df
- SHA1
  
  79dbaab22a85e8a0c3124d39423da1ca24c358e8
- SHA256
  
  a7c2b8d081407da5d72f12eeef21c11674ff616c89be40f73f114c292c09e6de
- SHA512
  
  6823068623029c10aa0d833be8422b6d93663832d24298bd9811f7700bbc56dc5463fd75f12273e2168bac6784a16e735cc86cf0de8841e83c1befc75bdfd02d
- SSDEEP
  
  3072:BG/VLLNVnlMoDjq0sg0lpb15L76ZhBUrIeGskK+KgPcf53whT5A/hTu:8Lh9ljdOlPB6tUrIK+zPcRaCpT
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
- 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

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