tofsee | c56c665284628c1928a4951dd94214549570d48f5ae553fb90a67d2a132ac643

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 06:38

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General

Target

JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe
Size

11.7MB
MD5

6347b209373638144cf0ad83f9f6d2e3
SHA1

93ec12b673de5d7a7245d226750c105aae3cac6e
SHA256

c56c665284628c1928a4951dd94214549570d48f5ae553fb90a67d2a132ac643
SHA512

16cf949c45ad07c94b66e22e7bcb9e3c3c947fb150fd411bdf6c98d034145c47910c36be52aa895f012c378a33bc134ac50c766adfadd284333d52d37c7951f4
SSDEEP

6144:I72USLqCfuAKEfkqsGUemWik5nkFp7xkvCd6skSwG8QUsc:kMqCfFfbsGZhikA7xkaYSwG81

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\fwfwkyra = "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
3000	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\fwfwkyra\ImagePath = "C:\\Windows\\SysWOW64\\fwfwkyra\\cwfpcfkw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1720	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2880	cwfpcfkw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2880 set thread context of 1720	2880	cwfpcfkw.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2260	sc.exe
3016	sc.exe
2884	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cwfpcfkw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2428	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	30
PID 2376 wrote to memory of 2428	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	30
PID 2376 wrote to memory of 2428	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	30
PID 2376 wrote to memory of 2428	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	30
PID 2376 wrote to memory of 2784	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	32
PID 2376 wrote to memory of 2784	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	32
PID 2376 wrote to memory of 2784	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	32
PID 2376 wrote to memory of 2784	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	32
PID 2376 wrote to memory of 2260	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	34
PID 2376 wrote to memory of 2260	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	34
PID 2376 wrote to memory of 2260	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	34
PID 2376 wrote to memory of 2260	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	34
PID 2376 wrote to memory of 3016	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	36
PID 2376 wrote to memory of 3016	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	36
PID 2376 wrote to memory of 3016	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	36
PID 2376 wrote to memory of 3016	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	36
PID 2376 wrote to memory of 2884	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	38
PID 2376 wrote to memory of 2884	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	38
PID 2376 wrote to memory of 2884	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	38
PID 2376 wrote to memory of 2884	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	38
PID 2376 wrote to memory of 3000	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	41
PID 2376 wrote to memory of 3000	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	41
PID 2376 wrote to memory of 3000	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	41
PID 2376 wrote to memory of 3000	2376	JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe	41
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43
PID 2880 wrote to memory of 1720	2880	cwfpcfkw.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fwfwkyra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cwfpcfkw.exe" C:\Windows\SysWOW64\fwfwkyra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fwfwkyra binPath= "C:\Windows\SysWOW64\fwfwkyra\cwfpcfkw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fwfwkyra "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fwfwkyra
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- 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:3000

C:\Windows\SysWOW64\fwfwkyra\cwfpcfkw.exe
C:\Windows\SysWOW64\fwfwkyra\cwfpcfkw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6347b209373638144cf0ad83f9f6d2e3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2880
- 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:1720

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\cwfpcfkw.exe

Filesize
11.6MB

MD5
1820776a46332fbda33964e693284a5e

SHA1
b5a9943d3e15ecbcf4326fa5b04af58c5dee00eb

SHA256
6a3c0fb8d61e7db91a17a9c865f148a5c429a99395daac605db7d51694d85ad3

SHA512
8b0b3b659ddc397cf4980fd41633cedc52aa311130252c294c70ade11a5e5bc117ed1ea02a54beb5a9a546503c797e58ca41238fab1ab5c081316a667677dbe1

Download Submit
memory/1720-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1720-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1720-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1720-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1720-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2376-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-10-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/2376-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2376-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2376-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2880-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads