tofsee | fcb55991155828d579dcde0f155c8c295a1f1afcf5d497145535ac3dd13d40b8

Analysis

max time kernel
144s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 12:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe
Size

12.8MB
MD5

c296f02e4d3f5773f967172f8b0b352f
SHA1

a5ac3f8756b8ff7bf2a83eb0f452e86af572e776
SHA256

fcb55991155828d579dcde0f155c8c295a1f1afcf5d497145535ac3dd13d40b8
SHA512

15ab64be39838dfdda5d805ca998064a42189ab453c5152c5a1b49154042ee2fc93c05096d43d19cc684292e396c42878d0fd6de3c17a321d7ea3686addf7618
SSDEEP

49152:KFUk///////////////////////////////////////////////////////////v:KF

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\sxdexcnr = "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
2748	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\sxdexcnr\ImagePath = "C:\\Windows\\SysWOW64\\sxdexcnr\\kjxznkld.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2704	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2724	kjxznkld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 2704	2724	kjxznkld.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
1916	sc.exe
2764	sc.exe
2896	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	kjxznkld.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2244	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	31
PID 2060 wrote to memory of 2244	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	31
PID 2060 wrote to memory of 2244	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	31
PID 2060 wrote to memory of 2244	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	31
PID 2060 wrote to memory of 2904	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2904	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2904	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 2904	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	33
PID 2060 wrote to memory of 1916	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 1916	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 1916	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 1916	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	35
PID 2060 wrote to memory of 2764	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2764	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2764	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2764	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	37
PID 2060 wrote to memory of 2896	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2896	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2896	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2896	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	39
PID 2060 wrote to memory of 2748	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2748	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2748	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	42
PID 2060 wrote to memory of 2748	2060	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	42
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44
PID 2724 wrote to memory of 2704	2724	kjxznkld.exe	44

C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxdexcnr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\sxdexcnr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sxdexcnr binPath= "C:\Windows\SysWOW64\sxdexcnr\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sxdexcnr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sxdexcnr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- 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:2748

C:\Windows\SysWOW64\sxdexcnr\kjxznkld.exe
C:\Windows\SysWOW64\sxdexcnr\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- 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:2704

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe

Filesize
10.6MB

MD5
b3cf32b89c7c4a90d0f1364e0b624ac9

SHA1
df019b0f3670a5abef67ca5f6dc654f96541df1f

SHA256
4ce477998a50722ccd2d17f901145ad25f5c6044445cde34254639f8a9105267

SHA512
abab55ee8c2c91cad85fca74601e2a4ba1f296c04ab5b04e67c0f75b1a36d69859e7d651dd21df8705bf15b4b8f6c47c669fca369d4b4e0195f5951ef0d1a3fd

Download Submit
memory/2060-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2060-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2060-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2060-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2060-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2704-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2704-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2724-17-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads