tofsee | a38284b03308b30a89eaec1add9ef1e5580a02c026fd012210ac7977b3da575b

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 20:03

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General

Target

JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe
Size

13.6MB
MD5

37c64893aa0f080f5a87ba78097fb143
SHA1

7db7a0ddea0841f10b5f4fe035135f6617850486
SHA256

a38284b03308b30a89eaec1add9ef1e5580a02c026fd012210ac7977b3da575b
SHA512

7cfde51ceec8c684c86eaf42abd3029caa06be0f1989b8aaed29855fae26ae7c5464c37be26cae9ff8a53e7bda2bf572e6ddae0b2376ea4e334416c557f39e39
SSDEEP

6144:ErZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:YZ2zxj5nPmRQ6QgjzOCnl

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
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\xeyghjbs = "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
2240	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\xeyghjbs\ImagePath = "C:\\Windows\\SysWOW64\\xeyghjbs\\mkussirh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2228	mkussirh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2228 set thread context of 2716	2228	mkussirh.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2684	sc.exe
2776	sc.exe
2700	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mkussirh.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2828	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	31
PID 1880 wrote to memory of 2828	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	31
PID 1880 wrote to memory of 2828	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	31
PID 1880 wrote to memory of 2828	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	31
PID 1880 wrote to memory of 3056	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	33
PID 1880 wrote to memory of 3056	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	33
PID 1880 wrote to memory of 3056	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	33
PID 1880 wrote to memory of 3056	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	33
PID 1880 wrote to memory of 2684	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	35
PID 1880 wrote to memory of 2684	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	35
PID 1880 wrote to memory of 2684	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	35
PID 1880 wrote to memory of 2684	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	35
PID 1880 wrote to memory of 2776	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	37
PID 1880 wrote to memory of 2776	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	37
PID 1880 wrote to memory of 2776	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	37
PID 1880 wrote to memory of 2776	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	37
PID 1880 wrote to memory of 2700	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	39
PID 1880 wrote to memory of 2700	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	39
PID 1880 wrote to memory of 2700	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	39
PID 1880 wrote to memory of 2700	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	39
PID 1880 wrote to memory of 2240	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	42
PID 1880 wrote to memory of 2240	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	42
PID 1880 wrote to memory of 2240	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	42
PID 1880 wrote to memory of 2240	1880	JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe	42
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44
PID 2228 wrote to memory of 2716	2228	mkussirh.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xeyghjbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkussirh.exe" C:\Windows\SysWOW64\xeyghjbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xeyghjbs binPath= "C:\Windows\SysWOW64\xeyghjbs\mkussirh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xeyghjbs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xeyghjbs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- 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:2240

C:\Windows\SysWOW64\xeyghjbs\mkussirh.exe
C:\Windows\SysWOW64\xeyghjbs\mkussirh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37c64893aa0f080f5a87ba78097fb143.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- 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:2716

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\mkussirh.exe

Filesize
14.0MB

MD5
2510e7379fc36749db1d72292fee36d0

SHA1
aee2afdd6cc6fdeec6f63b761c3a0e27681f61d2

SHA256
2b2768ccebfab59f22287ef80fcd48b3c942c00144c343d4db76cb858d500873

SHA512
93567cb955cf4f73dd26a80d90091dad9918b1b15122951b40da97e2b7c4e4c9636f9fc7e5f1d56fcd04017f4fe38d0886187f208004b62b36eeae682ff0cbda

Download Submit
memory/1880-3-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1880-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1880-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/1880-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1880-9-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2228-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2716-11-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2716-16-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2716-14-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2716-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-18-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads