tofsee | 99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440

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
30-12-2024 02:47

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General

Target

JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe
Size

242KB
MD5

cb3236bf34a4d42c3c120d2883670410
SHA1

a0570c98e666a8e3507c9b7aba3e5467f22f91ef
SHA256

99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440
SHA512

04898ac5a5dc5a39be98e2113bc15dbc2fe69e69651eca655a7a7f3b711c8892cf6d70eb6ff64367ef949e6b24fc07329e38c989af66709b52adc9937dbecd0b
SSDEEP

6144:/rZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:DZ2zxj5nPmRQ6QgjzOCnl

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\wfjvgxhs = "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
1548	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\wfjvgxhs\ImagePath = "C:\\Windows\\SysWOW64\\wfjvgxhs\\fzvbmwou.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1304	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	fzvbmwou.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 1304	2600	fzvbmwou.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2572	sc.exe
2724	sc.exe
2544	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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fzvbmwou.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 2812	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	30
PID 2748 wrote to memory of 2812	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	30
PID 2748 wrote to memory of 2812	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	30
PID 2748 wrote to memory of 2812	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	30
PID 2748 wrote to memory of 2556	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	32
PID 2748 wrote to memory of 2556	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	32
PID 2748 wrote to memory of 2556	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	32
PID 2748 wrote to memory of 2556	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	32
PID 2748 wrote to memory of 2572	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	34
PID 2748 wrote to memory of 2572	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	34
PID 2748 wrote to memory of 2572	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	34
PID 2748 wrote to memory of 2572	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	34
PID 2748 wrote to memory of 2724	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	36
PID 2748 wrote to memory of 2724	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	36
PID 2748 wrote to memory of 2724	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	36
PID 2748 wrote to memory of 2724	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	36
PID 2748 wrote to memory of 2544	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	38
PID 2748 wrote to memory of 2544	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	38
PID 2748 wrote to memory of 2544	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	38
PID 2748 wrote to memory of 2544	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	38
PID 2748 wrote to memory of 1548	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	41
PID 2748 wrote to memory of 1548	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	41
PID 2748 wrote to memory of 1548	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	41
PID 2748 wrote to memory of 1548	2748	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	41
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43
PID 2600 wrote to memory of 1304	2600	fzvbmwou.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfjvgxhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fzvbmwou.exe" C:\Windows\SysWOW64\wfjvgxhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wfjvgxhs binPath= "C:\Windows\SysWOW64\wfjvgxhs\fzvbmwou.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wfjvgxhs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wfjvgxhs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2544
- 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:1548

C:\Windows\SysWOW64\wfjvgxhs\fzvbmwou.exe
C:\Windows\SysWOW64\wfjvgxhs\fzvbmwou.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- 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:1304

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\fzvbmwou.exe

Filesize
10.6MB

MD5
c07bc250bf4b423f33296da48ac5e5fb

SHA1
99b39ba3b65a0e518fc44d460aa3bb0a5dfb3754

SHA256
f9364b1cf8d2bc67a48af5bccaae677d12ef6fd1f7b9640771ab384ebb028f10

SHA512
656be30febe422bdb49ed74b69b74a703f42cfb3cdfe8c24f6d0d19bec852e302876017fc063ef1a8e153d90ee85a1d132f55f614b1973acd41a02d73bc4d34f

Download Submit
memory/1304-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1304-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1304-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1304-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1304-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-15-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2748-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2748-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2748-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2748-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads