tofsee | 57505cf98c89236e3365f9c9087630b641f32d69d6e7184fe1e5c12093b3d9c0

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 13:17

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General

Target

JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe
Size

13.1MB
MD5

a18891ac4c86dc5662155b36d349f1d4
SHA1

bead486f2e55ddb197c14cbb8d53c9152ae6442e
SHA256

57505cf98c89236e3365f9c9087630b641f32d69d6e7184fe1e5c12093b3d9c0
SHA512

032785a8ff2dac819839617454e8b10312f00202efb289698eeb2ebf9507429b30923e9414c12abcfd2e8862d9bbd3bf2a97590cc816701e5a8dba3ced08d6dc
SSDEEP

393216:4555555555555555555555555555555555555555555555555555555555555557:45555555555555555555555555555557

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\bpytrbby = "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
2664	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\bpytrbby\ImagePath = "C:\\Windows\\SysWOW64\\bpytrbby\\exiyjgzs.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2604	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	exiyjgzs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 2604	2172	exiyjgzs.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2700	sc.exe
2640	sc.exe
2684	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	exiyjgzs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2480	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	31
PID 848 wrote to memory of 2480	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	31
PID 848 wrote to memory of 2480	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	31
PID 848 wrote to memory of 2480	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	31
PID 848 wrote to memory of 2080	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	33
PID 848 wrote to memory of 2080	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	33
PID 848 wrote to memory of 2080	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	33
PID 848 wrote to memory of 2080	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	33
PID 848 wrote to memory of 2640	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	35
PID 848 wrote to memory of 2640	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	35
PID 848 wrote to memory of 2640	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	35
PID 848 wrote to memory of 2640	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	35
PID 848 wrote to memory of 2684	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	37
PID 848 wrote to memory of 2684	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	37
PID 848 wrote to memory of 2684	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	37
PID 848 wrote to memory of 2684	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	37
PID 848 wrote to memory of 2700	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	39
PID 848 wrote to memory of 2700	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	39
PID 848 wrote to memory of 2700	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	39
PID 848 wrote to memory of 2700	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	39
PID 848 wrote to memory of 2664	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	42
PID 848 wrote to memory of 2664	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	42
PID 848 wrote to memory of 2664	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	42
PID 848 wrote to memory of 2664	848	JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe	42
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44
PID 2172 wrote to memory of 2604	2172	exiyjgzs.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bpytrbby\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\exiyjgzs.exe" C:\Windows\SysWOW64\bpytrbby\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bpytrbby binPath= "C:\Windows\SysWOW64\bpytrbby\exiyjgzs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bpytrbby "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bpytrbby
  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:2664

C:\Windows\SysWOW64\bpytrbby\exiyjgzs.exe
C:\Windows\SysWOW64\bpytrbby\exiyjgzs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a18891ac4c86dc5662155b36d349f1d4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- 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\exiyjgzs.exe

Filesize
14.8MB

MD5
d831339bd7644bf81d5cde556a7cd2a9

SHA1
05c5376b6be02aa408467db375a8dcb58978fa67

SHA256
6d55af980d3dab6ce0ce8345c10ae856aa27836533b4dc6f6eb4265cf200782f

SHA512
60ebe61b4cf83fbc52f69a3a2123aa261535de2f4dd75e1c48310aa93018bc64959e86d55e2e53de099c036febff139d9d575fdb5e7a34e5ec88bfabdf4f47c2

Download Submit
memory/848-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/848-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/848-4-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/848-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/848-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2172-15-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2604-14-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2604-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-11-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2604-17-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download
memory/2604-18-0x00000000000E0000-0x00000000000F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads