tofsee | 9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626

Analysis

max time kernel
145s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 16:08

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General

Target

JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe
Size

233KB
MD5

526f3f70f2ce2f84f3ab1c115e86117b
SHA1

2320ba17d9412c954c553bcaec33cf30ca2d826c
SHA256

9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626
SHA512

b15b716679301c3e109a8d1e06ae95c4c170633ff1ecf9dfdd78a930003b73059a36be2ea7b2732089278b7318ccec2110c971a3173863b123407525e3256c06
SSDEEP

6144:7BbOZy8Skh3L+3v/1WhR4o5vfjjlmXR8K:7BbOZy8fa3v/IySNsa

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\tqjydsfk = "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
2540	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\tqjydsfk\ImagePath = "C:\\Windows\\SysWOW64\\tqjydsfk\\smvfsvam.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2808	smvfsvam.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 1640	2808	smvfsvam.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2716	sc.exe
2668	sc.exe
2572	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	smvfsvam.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2792	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	30
PID 2112 wrote to memory of 2792	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	30
PID 2112 wrote to memory of 2792	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	30
PID 2112 wrote to memory of 2792	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	30
PID 2112 wrote to memory of 2912	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	32
PID 2112 wrote to memory of 2912	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	32
PID 2112 wrote to memory of 2912	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	32
PID 2112 wrote to memory of 2912	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	32
PID 2112 wrote to memory of 2668	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	34
PID 2112 wrote to memory of 2668	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	34
PID 2112 wrote to memory of 2668	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	34
PID 2112 wrote to memory of 2668	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	34
PID 2112 wrote to memory of 2572	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	36
PID 2112 wrote to memory of 2572	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	36
PID 2112 wrote to memory of 2572	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	36
PID 2112 wrote to memory of 2572	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	36
PID 2112 wrote to memory of 2716	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	38
PID 2112 wrote to memory of 2716	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	38
PID 2112 wrote to memory of 2716	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	38
PID 2112 wrote to memory of 2716	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	38
PID 2112 wrote to memory of 2540	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	41
PID 2112 wrote to memory of 2540	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	41
PID 2112 wrote to memory of 2540	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	41
PID 2112 wrote to memory of 2540	2112	JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe	41
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43
PID 2808 wrote to memory of 1640	2808	smvfsvam.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tqjydsfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\smvfsvam.exe" C:\Windows\SysWOW64\tqjydsfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tqjydsfk binPath= "C:\Windows\SysWOW64\tqjydsfk\smvfsvam.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tqjydsfk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tqjydsfk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- 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:2540

C:\Windows\SysWOW64\tqjydsfk\smvfsvam.exe
C:\Windows\SysWOW64\tqjydsfk\smvfsvam.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9ff9e0283dcadd5b0776529825da327d833e7ebe118ac5306703316f7a3e0626.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- 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:1640

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\smvfsvam.exe

Filesize
13.1MB

MD5
1ebac980336115404c9bd3804ea5b356

SHA1
6ad0b61a17bfbfac44cd98964f817a25c4249adf

SHA256
074220bc9d3e6a789b012a346c2f60ba40177d590fbb3d5fef6827a117b09fbd

SHA512
a4881e8fbea295eb8ac8538fee6deccd38f61eb425c396bf936992a8776f59aa140df13942b00056cc6bcb80ddccb13864d954f722eb02f684ba9bf0ac3a9d61

Download Submit
memory/1640-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1640-11-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1640-17-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1640-18-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2112-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-2-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2112-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2112-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-9-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2112-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2808-16-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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