tofsee | 499e163444d7c335aed5cb174c4aece0b2eaa3b93a86d1623ca419e9b86c8401

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
12-12-2024 20:47

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General

Target

e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe
Size

14.0MB
MD5

e835f770f41077fca80dd7c2e034723f
SHA1

f24bede6167067c352ad09d1f8af24fee488f8f6
SHA256

499e163444d7c335aed5cb174c4aece0b2eaa3b93a86d1623ca419e9b86c8401
SHA512

ae72182bdce167494cf51c198ab391361db3737fbda655c61ded3273b526bddabddc9f9aab4c3b552ee58887552e5e20873dc6bd3791b5238973093b5e83426d
SSDEEP

24576:jgdy5yNM4444444444444444444444444444444444444444444444444444444X:

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\osfjjqtk = "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
2556	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\osfjjqtk\ImagePath = "C:\\Windows\\SysWOW64\\osfjjqtk\\oxfdwybb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	oxfdwybb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2768 set thread context of 2028	2768	oxfdwybb.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2708	sc.exe
2832	sc.exe
2836	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.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	oxfdwybb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2752	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2752	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2752	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2752	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	30
PID 1924 wrote to memory of 2696	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	32
PID 1924 wrote to memory of 2696	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	32
PID 1924 wrote to memory of 2696	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	32
PID 1924 wrote to memory of 2696	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	32
PID 1924 wrote to memory of 2832	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	34
PID 1924 wrote to memory of 2832	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	34
PID 1924 wrote to memory of 2832	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	34
PID 1924 wrote to memory of 2832	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	34
PID 1924 wrote to memory of 2836	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	36
PID 1924 wrote to memory of 2836	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	36
PID 1924 wrote to memory of 2836	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	36
PID 1924 wrote to memory of 2836	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	36
PID 1924 wrote to memory of 2708	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	38
PID 1924 wrote to memory of 2708	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	38
PID 1924 wrote to memory of 2708	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	38
PID 1924 wrote to memory of 2708	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	38
PID 1924 wrote to memory of 2556	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	41
PID 1924 wrote to memory of 2556	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	41
PID 1924 wrote to memory of 2556	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	41
PID 1924 wrote to memory of 2556	1924	e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe	41
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43
PID 2768 wrote to memory of 2028	2768	oxfdwybb.exe	43

C:\Users\Admin\AppData\Local\Temp\e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\osfjjqtk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oxfdwybb.exe" C:\Windows\SysWOW64\osfjjqtk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create osfjjqtk binPath= "C:\Windows\SysWOW64\osfjjqtk\oxfdwybb.exe /d\"C:\Users\Admin\AppData\Local\Temp\e835f770f41077fca80dd7c2e034723f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description osfjjqtk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start osfjjqtk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- 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:2556

C:\Windows\SysWOW64\osfjjqtk\oxfdwybb.exe
C:\Windows\SysWOW64\osfjjqtk\oxfdwybb.exe /d"C:\Users\Admin\AppData\Local\Temp\e835f770f41077fca80dd7c2e034723f_JaffaCakes118.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:2028

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\oxfdwybb.exe

Filesize
12.3MB

MD5
dad124dd93484afe5fa3fcb98b7dec5c

SHA1
56fc9df40516fede70ec2facbff4053b1622bdee

SHA256
85cea193b45d8d98c6da8152d0d261912ce6f157113b085b69bcabf76efa7aeb

SHA512
aca9a1c2c0e74479f5e69e88e38a0aa47585a7dd1b943131a512556c8e424b84093bd6e32a70a366af566446c58991a920a703cd17a8cf9d541dd11ba1cb7107

Download Submit
memory/1924-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1924-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1924-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1924-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1924-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/1924-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2028-16-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2028-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2028-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2028-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2028-18-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2768-17-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads