tofsee | 2fa9f901e9467db8bbf7def10e02da05257f62448ea69bbf55b0b9a834a88301

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 21:46

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General

Target

JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe
Size

11.7MB
MD5

7b0ab20f77ec02d17ce7709082efc9fe
SHA1

9f784e9028d93c96b5891d32836e87190b0299f2
SHA256

2fa9f901e9467db8bbf7def10e02da05257f62448ea69bbf55b0b9a834a88301
SHA512

e0fb3b8903251973f6adb934fe3495fabc310c29d7a816c8f2ee6bb08652d11e62fc1544d0f268e481de073c586f224163313a850846b0dc2271b7e8e4a5f412
SSDEEP

196608:LI++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++:L

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\bymerbsp = "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
3016	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\bymerbsp\ImagePath = "C:\\Windows\\SysWOW64\\bymerbsp\\mkussirh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	mkussirh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2660	2752	mkussirh.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2928	sc.exe
2656	sc.exe
2852	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	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	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2744	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	30
PID 2208 wrote to memory of 2744	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	30
PID 2208 wrote to memory of 2744	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	30
PID 2208 wrote to memory of 2744	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	30
PID 2208 wrote to memory of 2808	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	32
PID 2208 wrote to memory of 2808	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	32
PID 2208 wrote to memory of 2808	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	32
PID 2208 wrote to memory of 2808	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	32
PID 2208 wrote to memory of 2928	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	34
PID 2208 wrote to memory of 2928	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	34
PID 2208 wrote to memory of 2928	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	34
PID 2208 wrote to memory of 2928	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	34
PID 2208 wrote to memory of 2656	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	36
PID 2208 wrote to memory of 2656	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	36
PID 2208 wrote to memory of 2656	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	36
PID 2208 wrote to memory of 2656	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	36
PID 2208 wrote to memory of 2852	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	38
PID 2208 wrote to memory of 2852	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	38
PID 2208 wrote to memory of 2852	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	38
PID 2208 wrote to memory of 2852	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	38
PID 2208 wrote to memory of 3016	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	41
PID 2208 wrote to memory of 3016	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	41
PID 2208 wrote to memory of 3016	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	41
PID 2208 wrote to memory of 3016	2208	JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe	41
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43
PID 2752 wrote to memory of 2660	2752	mkussirh.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bymerbsp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkussirh.exe" C:\Windows\SysWOW64\bymerbsp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bymerbsp binPath= "C:\Windows\SysWOW64\bymerbsp\mkussirh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bymerbsp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bymerbsp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:3016

C:\Windows\SysWOW64\bymerbsp\mkussirh.exe
C:\Windows\SysWOW64\bymerbsp\mkussirh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b0ab20f77ec02d17ce7709082efc9fe.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2752
- 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:2660

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
13.1MB

MD5
9277bd5a2eaac18df9b2621e6d61124a

SHA1
dea7850d74593c9d23b56b40ac23c25dcac25ecf

SHA256
c22352f1c4c8c6f467cd1acaf807cab43a1747ec3c3d954dce3f8d73c1cef7ae

SHA512
f25bc518f1b58b979f57bc1f05cc5e6eb48869cc456581435d2ce358040c8228de008b951465f8774a8d73e2bcbb7f7e51a7ad0f430e9c6743776b06faaccdaa

Download Submit
memory/2208-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2208-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2208-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2208-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2208-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2660-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2660-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-17-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads