tofsee | ccce4d243971b2f4421ce21285c634f0ec010ac71c9df0044babac25683689ff

Analysis

max time kernel
145s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 22:37

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General

Target
11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe
Size 14.3MB
Sample240328-2j8yrabc39
SHA256 ccce4d243971b2f4421ce21285c634f0ec010ac71c9df0044babac25683689ff
MD5 11cbe0c4ddd87dc6b88c3e4cabfeb51f
SHA1 43d9c5304f1b880faff156c640a85452e7a50505
SHA512 e64bd02b886ec4231a01d2317af25f07987828a488c96c5f1ca054d9d3cfe63d56769b5f27189e852fccdcd6411e326bf999d2a53e550dc1d28ed001e682bc10
SSDEEP 196608:rtPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPH:r
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\bpnvsifp = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3052	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\bpnvsifp\ImagePath = "C:\\Windows\\SysWOW64\\bpnvsifp\\fzvbmwou.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2412	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	fzvbmwou.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2412	2716	fzvbmwou.exe	41

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2616	sc.exe
2552	sc.exe
2536	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2896	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	28
PID 2856 wrote to memory of 2896	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	28
PID 2856 wrote to memory of 2896	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	28
PID 2856 wrote to memory of 2896	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	28
PID 2856 wrote to memory of 2548	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	30
PID 2856 wrote to memory of 2548	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	30
PID 2856 wrote to memory of 2548	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	30
PID 2856 wrote to memory of 2548	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	30
PID 2856 wrote to memory of 2616	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	32
PID 2856 wrote to memory of 2616	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	32
PID 2856 wrote to memory of 2616	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	32
PID 2856 wrote to memory of 2616	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	32
PID 2856 wrote to memory of 2552	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	34
PID 2856 wrote to memory of 2552	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	34
PID 2856 wrote to memory of 2552	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	34
PID 2856 wrote to memory of 2552	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	34
PID 2856 wrote to memory of 2536	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	36
PID 2856 wrote to memory of 2536	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	36
PID 2856 wrote to memory of 2536	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	36
PID 2856 wrote to memory of 2536	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	36
PID 2856 wrote to memory of 3052	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	39
PID 2856 wrote to memory of 3052	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	39
PID 2856 wrote to memory of 3052	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	39
PID 2856 wrote to memory of 3052	2856	11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe	39
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41
PID 2716 wrote to memory of 2412	2716	fzvbmwou.exe	41

C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bpnvsifp\
  2⤵
  PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fzvbmwou.exe" C:\Windows\SysWOW64\bpnvsifp\
  2⤵
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bpnvsifp binPath= "C:\Windows\SysWOW64\bpnvsifp\fzvbmwou.exe /d\"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bpnvsifp "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bpnvsifp
  2⤵
  - Launches sc.exe
  PID:2536
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  PID:3052

C:\Windows\SysWOW64\bpnvsifp\fzvbmwou.exe
C:\Windows\SysWOW64\bpnvsifp\fzvbmwou.exe /d"C:\Users\Admin\AppData\Local\Temp\11cbe0c4ddd87dc6b88c3e4cabfeb51f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

fzvbmwou.exe

Path C:\Users\Admin\AppData\Local\Temp\fzvbmwou.exe
Size 14.4MB
SHA256 136e06773bab2930cc639a1c80d65c28282afd60189db67566b1c0e171d96b05
MD5 268bd4067b287ad6c1d5dcf56231b637
SHA1 698d9af952d79e48303cb233d0b1184a5692360c
SHA512 1f4b23a74df9ddee6091bb1cc88e9ddb387b4ff424428fc324cdae9f47d2f95319df781ddc4e67ef83bfe06be6e97a712b4a5b40872efc820443e08ec57848b0
SSDEEP 196608:ZtPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:Z
MD5 SHA1 SHA512 SSDEEP

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memory/2412-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2412-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2412-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2412-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2412-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2412-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2412-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2716-11-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/2716-16-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/2716-9-0x0000000000960000-0x0000000000A60000-memory.dmp

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memory/2856-3-0x0000000000020000-0x0000000000033000-memory.dmp

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memory/2856-4-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/2856-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/2856-1-0x0000000000900000-0x0000000000A00000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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