tofsee | 93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/01/2025, 02:37

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General

Target

JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe
Size

14.7MB
MD5

85fc255b144ad1bae941cb10f76c562d
SHA1

6961b75a7e5e1720c6fd01b4979c77f3269e7aec
SHA256

93c57d1b6044486f8962a08e6ce7c774d54c0dc8fad2da404eb99e451b75b2e9
SHA512

e7e6ce112594f2d6a597ecd063e2797f1695be72dbd59316410d186be6e8876116662aa95d9ad25107a079b04eaffa7a7c039a99f2ef2fa15ae4681bace3f819
SSDEEP

98304:/UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUc:

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\fdmbleoz = "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
2532	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\fdmbleoz\ImagePath = "C:\\Windows\\SysWOW64\\fdmbleoz\\rlueruzl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2320	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2772	rlueruzl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2320	2772	rlueruzl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2880	sc.exe
2848	sc.exe
2688	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	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.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	rlueruzl.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2736	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	30
PID 2228 wrote to memory of 2736	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	30
PID 2228 wrote to memory of 2736	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	30
PID 2228 wrote to memory of 2736	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	30
PID 2228 wrote to memory of 2768	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	32
PID 2228 wrote to memory of 2768	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	32
PID 2228 wrote to memory of 2768	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	32
PID 2228 wrote to memory of 2768	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	32
PID 2228 wrote to memory of 2880	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	34
PID 2228 wrote to memory of 2880	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	34
PID 2228 wrote to memory of 2880	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	34
PID 2228 wrote to memory of 2880	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	34
PID 2228 wrote to memory of 2848	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	36
PID 2228 wrote to memory of 2848	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	36
PID 2228 wrote to memory of 2848	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	36
PID 2228 wrote to memory of 2848	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	36
PID 2228 wrote to memory of 2688	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	38
PID 2228 wrote to memory of 2688	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	38
PID 2228 wrote to memory of 2688	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	38
PID 2228 wrote to memory of 2688	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	38
PID 2228 wrote to memory of 2532	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	41
PID 2228 wrote to memory of 2532	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	41
PID 2228 wrote to memory of 2532	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	41
PID 2228 wrote to memory of 2532	2228	JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe	41
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43
PID 2772 wrote to memory of 2320	2772	rlueruzl.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fdmbleoz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rlueruzl.exe" C:\Windows\SysWOW64\fdmbleoz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fdmbleoz binPath= "C:\Windows\SysWOW64\fdmbleoz\rlueruzl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fdmbleoz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fdmbleoz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- 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:2532

C:\Windows\SysWOW64\fdmbleoz\rlueruzl.exe
C:\Windows\SysWOW64\fdmbleoz\rlueruzl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_85fc255b144ad1bae941cb10f76c562d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- 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:2320

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\rlueruzl.exe

Filesize
11.4MB

MD5
35057dbec89b49b90cec115067090798

SHA1
bc24a7ac28434ac97eb2a1180cf0c157ed252835

SHA256
1cd4ac0c6d1c55c63bf5ed20379d7102fd5a173817895d193929bcb9decdb6ab

SHA512
30d303940edecf4d791c3243a1e6884bc352bcd85c68f2ecf6d0cbff3e61d066f441b71dba4543d42c5bbe76b5c93862ec5500799013caa8553953d1cc235236

Download Submit
memory/2228-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2228-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2228-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2320-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2320-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2320-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2320-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2320-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2320-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-15-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads