tofsee | 76557e058cac01f8461dce0096df24e2fc552cc9909a89aca28c19164d75b00d

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-01-2025 22:15

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General

Target

JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe
Size

11.8MB
MD5

7c3bc71946b4af5c9477021ea9ec1203
SHA1

1b4242cf7d3ab378c4ed165a604b373aa02a5784
SHA256

76557e058cac01f8461dce0096df24e2fc552cc9909a89aca28c19164d75b00d
SHA512

69ae04d5c41aaa6a4f7fc2c2c0a6658171862850b78a831938b7ca017a250311d24de659041a32af01ced7e11590146c71807403c9bbf4a0301b5a1deb03b7b6
SSDEEP

3072:6VSA/SsuaW0G4uXQgwQpcCLti0ulGMYM1:sasBW06XQpQpFpTulG3

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.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\rbclzuqm = "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
2800	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\rbclzuqm\ImagePath = "C:\\Windows\\SysWOW64\\rbclzuqm\\myztokli.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	myztokli.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2780 set thread context of 2752	2780	myztokli.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2020	sc.exe
2732	sc.exe
2856	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	myztokli.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.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	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 2428 wrote to memory of 1808	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	30
PID 2428 wrote to memory of 1808	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	30
PID 2428 wrote to memory of 1808	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	30
PID 2428 wrote to memory of 1808	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	30
PID 2428 wrote to memory of 2920	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	32
PID 2428 wrote to memory of 2920	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	32
PID 2428 wrote to memory of 2920	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	32
PID 2428 wrote to memory of 2920	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	32
PID 2428 wrote to memory of 2020	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	34
PID 2428 wrote to memory of 2020	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	34
PID 2428 wrote to memory of 2020	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	34
PID 2428 wrote to memory of 2020	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	34
PID 2428 wrote to memory of 2732	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	36
PID 2428 wrote to memory of 2732	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	36
PID 2428 wrote to memory of 2732	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	36
PID 2428 wrote to memory of 2732	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	36
PID 2428 wrote to memory of 2856	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	38
PID 2428 wrote to memory of 2856	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	38
PID 2428 wrote to memory of 2856	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	38
PID 2428 wrote to memory of 2856	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	38
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2780 wrote to memory of 2752	2780	myztokli.exe	41
PID 2428 wrote to memory of 2800	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	42
PID 2428 wrote to memory of 2800	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	42
PID 2428 wrote to memory of 2800	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	42
PID 2428 wrote to memory of 2800	2428	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rbclzuqm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\myztokli.exe" C:\Windows\SysWOW64\rbclzuqm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rbclzuqm binPath= "C:\Windows\SysWOW64\rbclzuqm\myztokli.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rbclzuqm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rbclzuqm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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:2800

C:\Windows\SysWOW64\rbclzuqm\myztokli.exe
C:\Windows\SysWOW64\rbclzuqm\myztokli.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2752

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\myztokli.exe

Filesize
13.2MB

MD5
c572643e015ad63b83142f5d9fc59d7a

SHA1
29049d8144f1072cecee28224288d7a38b7b80f7

SHA256
5aec3a301c044efcf9a006ea12a6422f3ad6f532ea110e3cfe0186eba54be08e

SHA512
ae922a2615fc3d890c9a8cff0940b0fc42a725e9bfbc0d420a4666a946bc586a298489596bcd625eebb2007dd58cb64c49b2d3a15c2f8808c7254306c4793d79

Download Submit
memory/2428-1-0x0000000001E40000-0x0000000001E41000-memory.dmp

Filesize
4KB

Download
memory/2428-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2428-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2428-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2752-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-12-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads