tofsee | 2d6a0c56a8747c82868605e8d25db845911a79d28cb4b77196a0026ac6d95427

Analysis

max time kernel
144s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 07:00

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe
Size

302KB
MD5

92f27854fc1c33255253c9d0fedf7a8b
SHA1

6888e1954ebe90a884250d182c7bd166f4e98ca0
SHA256

2d6a0c56a8747c82868605e8d25db845911a79d28cb4b77196a0026ac6d95427
SHA512

429671f2875f1de2bd940d6fc8aa46c958086f05c32e74f530521068f40ee6dd9b86909ad099fb3a0c9e1893a48f9a24e65a0d4ad7f57e02501b8fd7484c04c9
SSDEEP

6144:UuGJxsl1+JHGaZVApoeZWK8pzMxhrgtu:40yGaZVaoe18pzigt

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\fveiegzc = "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
2524	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\fveiegzc\ImagePath = "C:\\Windows\\SysWOW64\\fveiegzc\\ecmkkajz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2636	ecmkkajz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 2976	2636	ecmkkajz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2528	sc.exe
2300	sc.exe
2660	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	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	ecmkkajz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe
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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2732	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	30
PID 1600 wrote to memory of 2732	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	30
PID 1600 wrote to memory of 2732	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	30
PID 1600 wrote to memory of 2732	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	30
PID 1600 wrote to memory of 2720	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	32
PID 1600 wrote to memory of 2720	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	32
PID 1600 wrote to memory of 2720	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	32
PID 1600 wrote to memory of 2720	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	32
PID 1600 wrote to memory of 2528	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	34
PID 1600 wrote to memory of 2528	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	34
PID 1600 wrote to memory of 2528	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	34
PID 1600 wrote to memory of 2528	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	34
PID 1600 wrote to memory of 2300	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	36
PID 1600 wrote to memory of 2300	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	36
PID 1600 wrote to memory of 2300	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	36
PID 1600 wrote to memory of 2300	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	36
PID 1600 wrote to memory of 2660	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	38
PID 1600 wrote to memory of 2660	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	38
PID 1600 wrote to memory of 2660	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	38
PID 1600 wrote to memory of 2660	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	38
PID 1600 wrote to memory of 2524	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	41
PID 1600 wrote to memory of 2524	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	41
PID 1600 wrote to memory of 2524	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	41
PID 1600 wrote to memory of 2524	1600	JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe	41
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43
PID 2636 wrote to memory of 2976	2636	ecmkkajz.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fveiegzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecmkkajz.exe" C:\Windows\SysWOW64\fveiegzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fveiegzc binPath= "C:\Windows\SysWOW64\fveiegzc\ecmkkajz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fveiegzc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fveiegzc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- 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:2524

C:\Windows\SysWOW64\fveiegzc\ecmkkajz.exe
C:\Windows\SysWOW64\fveiegzc\ecmkkajz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92f27854fc1c33255253c9d0fedf7a8b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- 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:2976

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\ecmkkajz.exe

Filesize
11.2MB

MD5
4756aa8f08ba4b627d347ba7e192bc90

SHA1
abdf26e80f8a53b46b9eca10a2920f49a2cbca3d

SHA256
bd2d5a9d59e9df3ae1763e9eb6400d7e348a55adbb51dce5eaee770a4360cb34

SHA512
03365c60c5258dfd0199826730b86c9075373b65aa025f51b793016017ee673a086bbf3df58f6bb35b601b3fb0f6473aa3e026052b6328db64888289936cebf6

Download Submit
memory/1600-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1600-1-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/1600-4-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/1600-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1600-9-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/2636-15-0x0000000000400000-0x0000000002DA3000-memory.dmp

Filesize
41.6MB

Download
memory/2976-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads