tofsee | ca0a6b6fba4b953e89e02937e312d3827725b239597b5fa2d38ee50c4e522f1f

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
09-01-2025 06:36

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General

Target

JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe
Size

12.0MB
MD5

c15b122b092fb7fd7609b0aa35c50055
SHA1

f7a3a614f928c93255722285522751c2e2683f77
SHA256

ca0a6b6fba4b953e89e02937e312d3827725b239597b5fa2d38ee50c4e522f1f
SHA512

a35833133eb8b957ab4b497aaa8fe184dddde80951891de2ec66b93bc8eed046b30036c452a55fbd7d1a34cc16bffb54da3618df49a666801d7a560d3e2c89de
SSDEEP

6144:0x1e32eIcaedCtrtmVHxzDlnTro77LlZgHzEV8hLH:0PemBSkrt8z5rofxW

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\mkefatpc = "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
2884	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\mkefatpc\ImagePath = "C:\\Windows\\SysWOW64\\mkefatpc\\mkussirh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2912	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	mkussirh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 2912	2824	mkussirh.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2720	sc.exe
2044	sc.exe
1548	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	sc.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	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.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	mkussirh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2696	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	30
PID 1924 wrote to memory of 2696	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	30
PID 1924 wrote to memory of 2696	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	30
PID 1924 wrote to memory of 2696	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	30
PID 1924 wrote to memory of 2296	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	32
PID 1924 wrote to memory of 2296	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	32
PID 1924 wrote to memory of 2296	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	32
PID 1924 wrote to memory of 2296	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	32
PID 1924 wrote to memory of 2044	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	34
PID 1924 wrote to memory of 2044	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	34
PID 1924 wrote to memory of 2044	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	34
PID 1924 wrote to memory of 2044	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	34
PID 1924 wrote to memory of 1548	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	36
PID 1924 wrote to memory of 1548	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	36
PID 1924 wrote to memory of 1548	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	36
PID 1924 wrote to memory of 1548	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	36
PID 1924 wrote to memory of 2720	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	38
PID 1924 wrote to memory of 2720	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	38
PID 1924 wrote to memory of 2720	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	38
PID 1924 wrote to memory of 2720	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	38
PID 1924 wrote to memory of 2884	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	41
PID 1924 wrote to memory of 2884	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	41
PID 1924 wrote to memory of 2884	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	41
PID 1924 wrote to memory of 2884	1924	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	41
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43
PID 2824 wrote to memory of 2912	2824	mkussirh.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mkefatpc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkussirh.exe" C:\Windows\SysWOW64\mkefatpc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mkefatpc binPath= "C:\Windows\SysWOW64\mkefatpc\mkussirh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mkefatpc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mkefatpc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2720
- 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:2884

C:\Windows\SysWOW64\mkefatpc\mkussirh.exe
C:\Windows\SysWOW64\mkefatpc\mkussirh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2824
- 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:2912

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
15.0MB

MD5
097a7718897181d2ea2e3a1f275f2910

SHA1
90342767473deebeace44fa27ee68e58360ea232

SHA256
537c407ef83be195700e41a43f20b1adabc9bfc138f4c6d7739c537014391a3e

SHA512
30906a212d0b4919dd82142abbce0e12142cd1d5d91ef9e5e1affc550a9114bd18f39505a155611340e851a90bc2ba6aa9816ea9749f2b1d3df83f742c949fff

Download Submit
memory/1924-8-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1924-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1924-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/1924-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1924-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1924-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2824-17-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2912-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2912-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2912-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads