tofsee | 5797d32d2850b171e826581aa4989a07d52e4ca70a0c6ad972f9b439a286ef84

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 02:30

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General

Target

JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe
Size

13.5MB
MD5

09395845799ba025e41cec464cc32ff3
SHA1

896bd88ed727c6c8a57ed59afcf6394f010a09db
SHA256

5797d32d2850b171e826581aa4989a07d52e4ca70a0c6ad972f9b439a286ef84
SHA512

051c12e89bc3d52fc4b8a0a661c2f93c3f1db73607bd24a362cede020bc5f9f0fd2152d4321225e0a843040b916f54ce8960ed12a2c7486f57bd3f2298053b2b
SSDEEP

6144:NpQ6t5O5aSeJhB5Cnyt+dg/KRJC8jbPzxRL2RjZyjSIQf4GF:Nm6+8Rhqnycdg/SljbbxRL+Z6Sr7F

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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\bntvxnyv = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2680	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\bntvxnyv\ImagePath = "C:\\Windows\\SysWOW64\\bntvxnyv\\isxkrmla.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2604	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2960	isxkrmla.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2960 set thread context of 2604	2960	isxkrmla.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
3052	sc.exe
2152	sc.exe
2780	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	isxkrmla.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2328	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	30
PID 2368 wrote to memory of 2328	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	30
PID 2368 wrote to memory of 2328	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	30
PID 2368 wrote to memory of 2328	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	30
PID 2368 wrote to memory of 1752	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	33
PID 2368 wrote to memory of 1752	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	33
PID 2368 wrote to memory of 1752	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	33
PID 2368 wrote to memory of 1752	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	33
PID 2368 wrote to memory of 3052	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	35
PID 2368 wrote to memory of 3052	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	35
PID 2368 wrote to memory of 3052	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	35
PID 2368 wrote to memory of 3052	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	35
PID 2368 wrote to memory of 2152	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	37
PID 2368 wrote to memory of 2152	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	37
PID 2368 wrote to memory of 2152	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	37
PID 2368 wrote to memory of 2152	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	37
PID 2368 wrote to memory of 2780	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	39
PID 2368 wrote to memory of 2780	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	39
PID 2368 wrote to memory of 2780	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	39
PID 2368 wrote to memory of 2780	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	39
PID 2368 wrote to memory of 2680	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	42
PID 2368 wrote to memory of 2680	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	42
PID 2368 wrote to memory of 2680	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	42
PID 2368 wrote to memory of 2680	2368	JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe	42
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44
PID 2960 wrote to memory of 2604	2960	isxkrmla.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bntvxnyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\isxkrmla.exe" C:\Windows\SysWOW64\bntvxnyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bntvxnyv binPath= "C:\Windows\SysWOW64\bntvxnyv\isxkrmla.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bntvxnyv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bntvxnyv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2680

C:\Windows\SysWOW64\bntvxnyv\isxkrmla.exe
C:\Windows\SysWOW64\bntvxnyv\isxkrmla.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_09395845799ba025e41cec464cc32ff3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\isxkrmla.exe

Filesize
14.6MB

MD5
870581570df9b6bcd590a3ed772b1f38

SHA1
12e0e9fe11ad8f9b08617d96b1ba9b6cc877fcac

SHA256
f7970ffb43d0b3e43440289001a387cec2b4e6755438dac041c94c45d92a2521

SHA512
ef8433aa8a8083dc91d740ecd34db56751ef2b2c44887a04ed7280731e71f6e6c0f6a6b0f9f883344f4a8b19b1b76bcb8593511a38fed093d5681607a523fa36

Download Submit
memory/2368-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2368-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2368-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2368-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2368-10-0x0000000000930000-0x0000000000A30000-memory.dmp

Filesize
1024KB

Download
memory/2368-1-0x0000000000930000-0x0000000000A30000-memory.dmp

Filesize
1024KB

Download
memory/2368-8-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download
memory/2604-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2960-17-0x0000000000400000-0x0000000000788000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads