tofsee | 5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33

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
29/12/2024, 07:57

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General

Target
JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe
Size 284KB
Sample241229-jtkd2axjbx
SHA256 5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33
MD5 0b19b04338ddda5554112c86c5791684
SHA1 93cdd5161cb58122fc0edfe66a7af5b75a89ff4c
SHA512 39fb27528029cd6664bd503625ef13f116dfea6353271bfebf74f69586e844153c0d8e8452acbf481b450fa511bd8a0ce4ed2f9995b40f57374394159879b6eb
SSDEEP 6144:uT5AEWRLSnPVskaD/gi4T9HROhxxpeTr/ekI:ulAvGnPSdDnzxp6L
MD5 SHA1 SHA512 SSDEEP

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\dbokwvrt = "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
2692	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\dbokwvrt\ImagePath = "C:\\Windows\\SysWOW64\\dbokwvrt\\smvfsvam.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2964	smvfsvam.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2964 set thread context of 2832	2964	smvfsvam.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2088	sc.exe
2700	sc.exe
2848	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_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	smvfsvam.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 2492	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	31
PID 1852 wrote to memory of 2492	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	31
PID 1852 wrote to memory of 2492	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	31
PID 1852 wrote to memory of 2492	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	31
PID 1852 wrote to memory of 2036	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	33
PID 1852 wrote to memory of 2036	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	33
PID 1852 wrote to memory of 2036	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	33
PID 1852 wrote to memory of 2036	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	33
PID 1852 wrote to memory of 2088	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	35
PID 1852 wrote to memory of 2088	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	35
PID 1852 wrote to memory of 2088	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	35
PID 1852 wrote to memory of 2088	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	35
PID 1852 wrote to memory of 2700	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	37
PID 1852 wrote to memory of 2700	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	37
PID 1852 wrote to memory of 2700	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	37
PID 1852 wrote to memory of 2700	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	37
PID 1852 wrote to memory of 2848	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	39
PID 1852 wrote to memory of 2848	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	39
PID 1852 wrote to memory of 2848	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	39
PID 1852 wrote to memory of 2848	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	39
PID 1852 wrote to memory of 2692	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	42
PID 1852 wrote to memory of 2692	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	42
PID 1852 wrote to memory of 2692	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	42
PID 1852 wrote to memory of 2692	1852	JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe	42
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44
PID 2964 wrote to memory of 2832	2964	smvfsvam.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dbokwvrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\smvfsvam.exe" C:\Windows\SysWOW64\dbokwvrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dbokwvrt binPath= "C:\Windows\SysWOW64\dbokwvrt\smvfsvam.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dbokwvrt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dbokwvrt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:2692

C:\Windows\SysWOW64\dbokwvrt\smvfsvam.exe
C:\Windows\SysWOW64\dbokwvrt\smvfsvam.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5f1de5ad55c9145f7d703b693ce532efad766fd47cbc10b87562d815c059ae33.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2964
- 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:2832

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

smvfsvam.exe

Path C:\Users\Admin\AppData\Local\Temp\smvfsvam.exe
Size 13.4MB
SHA256 e3f6d0d6a94744c9c8d4ce8a8a6b0b46924ae49bdc3efcb1a642260b02a0834c
MD5 8892e19bfaf43db224b031788d5b6cfb
SHA1 01a5e7e5257b909f21f3d2988cc309a2504ff667
SHA512 b2a9434579d8805ef6a0587f35872cae7ef1729104cc8d2e5458899fd53ff1041af511444eb73938ed79f400635aac7e526e3e34b7ac8654a15ddad51c87074f
SSDEEP 393216:BzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzD:
MD5 SHA1 SHA512 SSDEEP

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memory/1852-11-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1852-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1852-2-0x0000000000020000-0x0000000000033000-memory.dmp

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memory/1852-9-0x0000000000020000-0x0000000000033000-memory.dmp

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memory/1852-8-0x0000000000400000-0x0000000000454000-memory.dmp

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memory/1852-1-0x0000000000610000-0x0000000000710000-memory.dmp

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memory/1852-10-0x0000000000610000-0x0000000000710000-memory.dmp

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memory/2832-12-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2832-15-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2832-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2832-18-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2832-19-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2964-16-0x0000000000400000-0x0000000000454000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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