tofsee | ecbc8d6bdb6d25e1d6e8083a9992b344bd8bd5c6672a26cd08cd63659b2fe122

Analysis

max time kernel
148s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 17:55

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General

Target

JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe
Size

10.5MB
MD5

ea71620aae3be1fecd9e4f8544640c7c
SHA1

bef3abbd3233227300d06374e87d757ebf9419f0
SHA256

ecbc8d6bdb6d25e1d6e8083a9992b344bd8bd5c6672a26cd08cd63659b2fe122
SHA512

1afe3dbce7270aa4dbbcf37c452d9d2ddac3e11f55553427c1bc9fdbec73c4c2f2b1e4bea52da2784222d08a6c7227037c3eb0872a234e62ee270c759cdb1f37
SSDEEP

49152:IN5555555555555555555555555555555555555555555555555555555555555H:

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\cbutskx = "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
2720	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\cbutskx\ImagePath = "C:\\Windows\\SysWOW64\\cbutskx\\gznzrlna.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2776	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2148	gznzrlna.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2148 set thread context of 2776	2148	gznzrlna.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
756	sc.exe
2880	sc.exe
2672	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	gznzrlna.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2128	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	30
PID 2504 wrote to memory of 2128	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	30
PID 2504 wrote to memory of 2128	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	30
PID 2504 wrote to memory of 2128	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	30
PID 2504 wrote to memory of 2528	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	32
PID 2504 wrote to memory of 2528	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	32
PID 2504 wrote to memory of 2528	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	32
PID 2504 wrote to memory of 2528	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	32
PID 2504 wrote to memory of 756	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	34
PID 2504 wrote to memory of 756	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	34
PID 2504 wrote to memory of 756	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	34
PID 2504 wrote to memory of 756	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	34
PID 2504 wrote to memory of 2880	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	36
PID 2504 wrote to memory of 2880	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	36
PID 2504 wrote to memory of 2880	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	36
PID 2504 wrote to memory of 2880	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	36
PID 2504 wrote to memory of 2672	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	38
PID 2504 wrote to memory of 2672	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	38
PID 2504 wrote to memory of 2672	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	38
PID 2504 wrote to memory of 2672	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	38
PID 2504 wrote to memory of 2720	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	41
PID 2504 wrote to memory of 2720	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	41
PID 2504 wrote to memory of 2720	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	41
PID 2504 wrote to memory of 2720	2504	JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe	41
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43
PID 2148 wrote to memory of 2776	2148	gznzrlna.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cbutskx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gznzrlna.exe" C:\Windows\SysWOW64\cbutskx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cbutskx binPath= "C:\Windows\SysWOW64\cbutskx\gznzrlna.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cbutskx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cbutskx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2672
- 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:2720

C:\Windows\SysWOW64\cbutskx\gznzrlna.exe
C:\Windows\SysWOW64\cbutskx\gznzrlna.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea71620aae3be1fecd9e4f8544640c7c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- 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:2776

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\gznzrlna.exe

Filesize
12.3MB

MD5
ac6aba1bee06e7ac181dca475fd93491

SHA1
fa593f876d1b62c85510460efd07debebc9a97cc

SHA256
801cbfb71fe9f2d2fd3a234704aec3f54b41e8fed0095c348098bb8bf80035c4

SHA512
00a834f6199b554778e1f62264c227f3f5200ba647606d179d900fb29119f9ab6d4cab67f79cdd9fb2dbda10cfab21820edfb5767e781296b1a6d1ed554b6aa7

Download Submit
memory/2148-17-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2504-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2504-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2504-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2504-1-0x0000000002F30000-0x0000000003030000-memory.dmp

Filesize
1024KB

Download
memory/2504-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2776-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2776-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2776-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2776-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads