tofsee | f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 03:58

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General

Target

JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe
Size

241KB
MD5

8866c6b22acbba4ab641339d23bdc9f3
SHA1

8ac8ce69741105015d7810e5e0a59cad7316fc77
SHA256

f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a
SHA512

029dca3423be718485ad36cab810e66ba7ae4294d63c4740e4187c3d458206cf08d344460684518b06351f31ceed64c35e6dfa76ff63b04631989631ab1569dc
SSDEEP

3072:EQKPNMYekPTg1n87zaHWgODOwF0H2UyorPePEO/6AlXUH1v5hu5xspXrk:KPqic1n0WHgDORLkE87EVvP0xs

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\efrnoodb = "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
2680	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\efrnoodb\ImagePath = "C:\\Windows\\SysWOW64\\efrnoodb\\vhczgfft.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2816	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2948	vhczgfft.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2948 set thread context of 2816	2948	vhczgfft.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2240	sc.exe
2660	sc.exe
2812	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_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.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	netsh.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	vhczgfft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2324	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	31
PID 2380 wrote to memory of 2324	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	31
PID 2380 wrote to memory of 2324	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	31
PID 2380 wrote to memory of 2324	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	31
PID 2380 wrote to memory of 2868	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	33
PID 2380 wrote to memory of 2868	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	33
PID 2380 wrote to memory of 2868	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	33
PID 2380 wrote to memory of 2868	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	33
PID 2380 wrote to memory of 2240	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	35
PID 2380 wrote to memory of 2240	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	35
PID 2380 wrote to memory of 2240	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	35
PID 2380 wrote to memory of 2240	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	35
PID 2380 wrote to memory of 2660	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	37
PID 2380 wrote to memory of 2660	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	37
PID 2380 wrote to memory of 2660	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	37
PID 2380 wrote to memory of 2660	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	37
PID 2380 wrote to memory of 2812	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	39
PID 2380 wrote to memory of 2812	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	39
PID 2380 wrote to memory of 2812	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	39
PID 2380 wrote to memory of 2812	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	39
PID 2380 wrote to memory of 2680	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	42
PID 2380 wrote to memory of 2680	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	42
PID 2380 wrote to memory of 2680	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	42
PID 2380 wrote to memory of 2680	2380	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	42
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44
PID 2948 wrote to memory of 2816	2948	vhczgfft.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\efrnoodb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vhczgfft.exe" C:\Windows\SysWOW64\efrnoodb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create efrnoodb binPath= "C:\Windows\SysWOW64\efrnoodb\vhczgfft.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description efrnoodb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start efrnoodb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:2680

C:\Windows\SysWOW64\efrnoodb\vhczgfft.exe
C:\Windows\SysWOW64\efrnoodb\vhczgfft.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- 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:2816

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\vhczgfft.exe

Filesize
10.3MB

MD5
ee1e5ac141c62ef31a3fc447eac3c06d

SHA1
2a24d1eacf144af960b854cc4645d674b4fec6db

SHA256
2a1c5c0c16d8bdbf5654a0277a0207e1e52e09d8a6e0f2b8eb954a21d79b6951

SHA512
9e119845ef06811b738a2094d9fa474fd8df8a3fff263ded7eadd36e2b72cae507cf954e3093a8b39ea633b55b98d0a770c1a73f3986425ca91ffaac62d10ece

Download Submit
memory/2380-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2380-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2380-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2380-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2380-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2380-1-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/2816-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2816-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2816-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2816-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2816-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2948-16-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads