tofsee | 8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 23:24

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General

Target

JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe
Size

241KB
MD5

0ae6c8339377c3855ddadcad76673d8a
SHA1

ce2b58ab96ef3790ce55307ee3d7c04399b3e821
SHA256

8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54
SHA512

0d99817de8f5450c05303eafb81d533003ef77f1df8a59d5ae068675ecbba15f00d80d1da307e5eb02a74ebfb4c8d7f2ed3ee64b51995dbaa0644d36a68d42df
SSDEEP

3072:GOsUA8KZQ/IxsPVg4nkvzaHWgSjqdF0w2Uyopz9ZeCqJXXfehv1Ijoxw9xk:oUA8GV2e4nYWHEjqPt9cCqxmhv1pxQ

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\ksapsrfb = "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
2744	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\ksapsrfb\ImagePath = "C:\\Windows\\SysWOW64\\ksapsrfb\\cssshyew.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2712	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2688	cssshyew.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2688 set thread context of 2712	2688	cssshyew.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2756	sc.exe
2832	sc.exe
1192	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cssshyew.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2972	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	30
PID 3012 wrote to memory of 2972	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	30
PID 3012 wrote to memory of 2972	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	30
PID 3012 wrote to memory of 2972	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	30
PID 3012 wrote to memory of 2952	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	32
PID 3012 wrote to memory of 2952	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	32
PID 3012 wrote to memory of 2952	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	32
PID 3012 wrote to memory of 2952	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	32
PID 3012 wrote to memory of 2756	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	34
PID 3012 wrote to memory of 2756	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	34
PID 3012 wrote to memory of 2756	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	34
PID 3012 wrote to memory of 2756	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	34
PID 3012 wrote to memory of 2832	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	36
PID 3012 wrote to memory of 2832	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	36
PID 3012 wrote to memory of 2832	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	36
PID 3012 wrote to memory of 2832	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	36
PID 3012 wrote to memory of 1192	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	38
PID 3012 wrote to memory of 1192	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	38
PID 3012 wrote to memory of 1192	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	38
PID 3012 wrote to memory of 1192	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	38
PID 3012 wrote to memory of 2744	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	41
PID 3012 wrote to memory of 2744	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	41
PID 3012 wrote to memory of 2744	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	41
PID 3012 wrote to memory of 2744	3012	JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe	41
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43
PID 2688 wrote to memory of 2712	2688	cssshyew.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.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\ksapsrfb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cssshyew.exe" C:\Windows\SysWOW64\ksapsrfb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ksapsrfb binPath= "C:\Windows\SysWOW64\ksapsrfb\cssshyew.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ksapsrfb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ksapsrfb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1192
- 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:2744

C:\Windows\SysWOW64\ksapsrfb\cssshyew.exe
C:\Windows\SysWOW64\ksapsrfb\cssshyew.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8d5cf5412047ce007f13174937a4d7664bf97816b1b274f887c5b91eecfd3e54.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- 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:2712

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\cssshyew.exe

Filesize
10.4MB

MD5
0e3f12ec4c40076750c9d3dd96858cec

SHA1
2fe84beecbcc6d367a4c0e32829e6d7ff625de16

SHA256
0b8f55e0b971d058e9b87c5173151d09fee80f6817634b247f4a9b3328f3eaae

SHA512
9083d3a4380d5928ae2b2fb234133e656cfe19aecd2af699f5c91bd87c210027eddce08f1e7aa78c983b7a9db5d3083891ed2cea3f69ad543dc3db661e015c3d

Download Submit
memory/2688-16-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2712-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2712-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2712-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2712-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3012-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/3012-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3012-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3012-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3012-1-0x0000000000960000-0x0000000000A60000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads