tofsee | b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 21:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe
Size

157KB
MD5

8006480396403ecdc3dfba652f72625e
SHA1

2bd56d6ced8bbc55eabe903e40b0f379588a17ff
SHA256

b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50
SHA512

c6a579c80c91b6ee7e08872b8c2f8c4d469e7ab53e67c1270920b0e3006c9ebf0ad77c9dba7ba05857f060bf15de2f4c22a618b874fc35363c0d9446d1a59290
SSDEEP

3072:gSxItjItvER8RAVljfk7PwaKhp3iyqH5+:dIG1S8AfzFaAy

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\jstryurc = "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
2936	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\jstryurc\ImagePath = "C:\\Windows\\SysWOW64\\jstryurc\\sytwfooj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	sytwfooj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2768 set thread context of 2840	2768	sytwfooj.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2224	sc.exe
3044	sc.exe
2284	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sytwfooj.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2872	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	30
PID 3012 wrote to memory of 2872	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	30
PID 3012 wrote to memory of 2872	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	30
PID 3012 wrote to memory of 2872	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	30
PID 3012 wrote to memory of 3020	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	32
PID 3012 wrote to memory of 3020	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	32
PID 3012 wrote to memory of 3020	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	32
PID 3012 wrote to memory of 3020	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	32
PID 3012 wrote to memory of 2224	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	34
PID 3012 wrote to memory of 2224	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	34
PID 3012 wrote to memory of 2224	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	34
PID 3012 wrote to memory of 2224	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	34
PID 3012 wrote to memory of 3044	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	36
PID 3012 wrote to memory of 3044	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	36
PID 3012 wrote to memory of 3044	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	36
PID 3012 wrote to memory of 3044	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	36
PID 3012 wrote to memory of 2284	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	38
PID 3012 wrote to memory of 2284	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	38
PID 3012 wrote to memory of 2284	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	38
PID 3012 wrote to memory of 2284	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	38
PID 3012 wrote to memory of 2936	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	40
PID 3012 wrote to memory of 2936	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	40
PID 3012 wrote to memory of 2936	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	40
PID 3012 wrote to memory of 2936	3012	JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe	40
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43
PID 2768 wrote to memory of 2840	2768	sytwfooj.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jstryurc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sytwfooj.exe" C:\Windows\SysWOW64\jstryurc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jstryurc binPath= "C:\Windows\SysWOW64\jstryurc\sytwfooj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jstryurc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jstryurc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2284
- 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:2936

C:\Windows\SysWOW64\jstryurc\sytwfooj.exe
C:\Windows\SysWOW64\jstryurc\sytwfooj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b91cadcdb2de363ca86892d7ff8976eebc3caf201eaf17677e7813ab28dcca50.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2768
- 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:2840

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\sytwfooj.exe

Filesize
10.5MB

MD5
7f5c954c969802bbe1e65df52e1109d2

SHA1
0fe489da3da520dfda93d79a2aa0c527ab7d6bb7

SHA256
563c0e83bf9c3697259c805bce924e5a210a342715a0ceaf8ffe0530dd0fdaa4

SHA512
efea10ca2c803cc75d3e035f09d685372f0bf1157e0b050d5d1443dfd180ff5aef9647bea6ebb9ee83ccac06d5b77e84862867e18f0492dfc2d868c694d84568

Download Submit
memory/2768-16-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2840-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2840-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3012-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-7-0x00000000002C0000-0x00000000002D3000-memory.dmp

Filesize
76KB

Download
memory/3012-6-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/3012-5-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3012-1-0x00000000002C0000-0x00000000002D3000-memory.dmp

Filesize
76KB

Download
memory/3012-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads