tofsee | 9affcef96c7a0311b248db4f6b690c2c7105162c76f9eeb35b7729533dc83b24

Analysis

max time kernel
149s
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 18:47

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General

Target

JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe
Size

14.3MB
MD5

345840fcaaa9e93ed0e17204d330028e
SHA1

5830c492bcc7a3cf2c93a04e34e9aaa1689cc270
SHA256

9affcef96c7a0311b248db4f6b690c2c7105162c76f9eeb35b7729533dc83b24
SHA512

d800b73f7f5f57b3fff7a5489a2d3ea715af79c121b78f0d633ab6b22f220a347812f55e976ec4daa8df7d3be484f37eaf5e58cc5c9d8659ea00bee0c2e819f3
SSDEEP

49152:YzPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO:Y

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\bjwlnatr = "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
2868	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\bjwlnatr\ImagePath = "C:\\Windows\\SysWOW64\\bjwlnatr\\xmrsmuxq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2952	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2836	xmrsmuxq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2836 set thread context of 2952	2836	xmrsmuxq.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2088	sc.exe
2756	sc.exe
2536	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xmrsmuxq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.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	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 2420 wrote to memory of 3024	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	30
PID 2420 wrote to memory of 3024	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	30
PID 2420 wrote to memory of 3024	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	30
PID 2420 wrote to memory of 3024	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	30
PID 2420 wrote to memory of 1752	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	32
PID 2420 wrote to memory of 1752	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	32
PID 2420 wrote to memory of 1752	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	32
PID 2420 wrote to memory of 1752	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	32
PID 2420 wrote to memory of 2536	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	34
PID 2420 wrote to memory of 2536	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	34
PID 2420 wrote to memory of 2536	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	34
PID 2420 wrote to memory of 2536	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	34
PID 2420 wrote to memory of 2088	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	36
PID 2420 wrote to memory of 2088	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	36
PID 2420 wrote to memory of 2088	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	36
PID 2420 wrote to memory of 2088	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	36
PID 2420 wrote to memory of 2756	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	38
PID 2420 wrote to memory of 2756	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	38
PID 2420 wrote to memory of 2756	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	38
PID 2420 wrote to memory of 2756	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	38
PID 2420 wrote to memory of 2868	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	41
PID 2420 wrote to memory of 2868	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	41
PID 2420 wrote to memory of 2868	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	41
PID 2420 wrote to memory of 2868	2420	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	41
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43
PID 2836 wrote to memory of 2952	2836	xmrsmuxq.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjwlnatr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xmrsmuxq.exe" C:\Windows\SysWOW64\bjwlnatr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjwlnatr binPath= "C:\Windows\SysWOW64\bjwlnatr\xmrsmuxq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjwlnatr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjwlnatr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- 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:2868

C:\Windows\SysWOW64\bjwlnatr\xmrsmuxq.exe
C:\Windows\SysWOW64\bjwlnatr\xmrsmuxq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2836
- 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:2952

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\xmrsmuxq.exe

Filesize
14.1MB

MD5
565702dc2cafd341126420b344af351d

SHA1
27f4a212548fb2f501dc9e66dbc2d5d642526836

SHA256
6aa0fb91d0033c355d6cb61cff72c31da4aa416b5f8fda6fd1f7a9173ed964b8

SHA512
7bb87d0a85b3760c19fc5b5fb325a5e5d3612a19f4a58ac0414a1342b8cc0af07b14b9c147c12ac31ed92b60880a5917e538c6aeef42ce7ed3fd38dc1e681bbf

Download Submit
memory/2420-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2420-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2420-1-0x00000000017E0000-0x00000000018E0000-memory.dmp

Filesize
1024KB

Download
memory/2420-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2420-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2420-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2836-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2952-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2952-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2952-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2952-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2952-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads