tofsee | d16f81bd79a1f5205caf07572c804995e43d377ba1fe66e921152373c9dddefe

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-01-2025 17:06

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General

Target

JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe
Size

10.4MB
MD5

e984c03bb1dd8c4784ade42bb3640c37
SHA1

0c43f3df0d87535e8b3ba81344dab7a707a43adc
SHA256

d16f81bd79a1f5205caf07572c804995e43d377ba1fe66e921152373c9dddefe
SHA512

aab9304285cf63541f5f42e530ad24ddadee41054f9186ee8caa9470cae9f0b94df9f9c957b82999d4ead68d9254aff4ad986b04f24679c383dc7c69100500bb
SSDEEP

196608:Exxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxp:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\rqsvoeeo = "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
3004	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\rqsvoeeo\ImagePath = "C:\\Windows\\SysWOW64\\rqsvoeeo\\gvabvdgz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2620	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	gvabvdgz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 2620	3012	gvabvdgz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2888	sc.exe
2688	sc.exe
2860	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	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	gvabvdgz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2524	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	30
PID 2396 wrote to memory of 2524	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	30
PID 2396 wrote to memory of 2524	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	30
PID 2396 wrote to memory of 2524	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	30
PID 2396 wrote to memory of 2012	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	32
PID 2396 wrote to memory of 2012	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	32
PID 2396 wrote to memory of 2012	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	32
PID 2396 wrote to memory of 2012	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	32
PID 2396 wrote to memory of 2888	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	34
PID 2396 wrote to memory of 2888	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	34
PID 2396 wrote to memory of 2888	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	34
PID 2396 wrote to memory of 2888	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	34
PID 2396 wrote to memory of 2688	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	36
PID 2396 wrote to memory of 2688	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	36
PID 2396 wrote to memory of 2688	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	36
PID 2396 wrote to memory of 2688	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	36
PID 2396 wrote to memory of 2860	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	38
PID 2396 wrote to memory of 2860	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	38
PID 2396 wrote to memory of 2860	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	38
PID 2396 wrote to memory of 2860	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	38
PID 2396 wrote to memory of 3004	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	41
PID 2396 wrote to memory of 3004	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	41
PID 2396 wrote to memory of 3004	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	41
PID 2396 wrote to memory of 3004	2396	JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe	41
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43
PID 3012 wrote to memory of 2620	3012	gvabvdgz.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rqsvoeeo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gvabvdgz.exe" C:\Windows\SysWOW64\rqsvoeeo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rqsvoeeo binPath= "C:\Windows\SysWOW64\rqsvoeeo\gvabvdgz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rqsvoeeo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rqsvoeeo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2860
- 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:3004

C:\Windows\SysWOW64\rqsvoeeo\gvabvdgz.exe
C:\Windows\SysWOW64\rqsvoeeo\gvabvdgz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e984c03bb1dd8c4784ade42bb3640c37.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- 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:2620

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\gvabvdgz.exe

Filesize
11.7MB

MD5
0512b784b76a566c495329dbb3254fb1

SHA1
ec02293928c3eb28e3a840d29ef2f43bb6822433

SHA256
44efb981191738bdcf6cf3e93a58f4b8683efcb051d0091257668aa63996e73b

SHA512
b83d75718e75f266fa032ab53993018deb5a5fcd124b32378d8513c5bcc4b0fb9442deb90d349a99b946de64124c6cfb2ddc9cc7bfd0ce0cb2da1b5e006c7a5b

Download Submit
memory/2396-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2396-1-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2396-7-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2396-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2396-0-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/2396-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/2620-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2620-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2620-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2620-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2620-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3012-16-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads