tofsee | 6b65341118c8804cdc8160231334720f941f4aa427ae61b8440042827b626f9b

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
05/01/2025, 13:57

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General

Target

JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe
Size

11.7MB
MD5

a8e160b0eab8a79a750eeb89aa963006
SHA1

485a389f77f4c4dda1dbf5e6f92cf878409ec9ed
SHA256

6b65341118c8804cdc8160231334720f941f4aa427ae61b8440042827b626f9b
SHA512

bde2c40e584f2f2cc662b34a5984287ee8e693b5cd4ecadb280e4b2dbf2bba1854eaa8d3504540f7cf6784fd43276f9fe0dd0e5a9b6182abbc770ceaa68297d5
SSDEEP

196608:ThKaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaan:T

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\ewjabruy = "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
2984	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\ewjabruy\ImagePath = "C:\\Windows\\SysWOW64\\ewjabruy\\ecrdxteu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	ecrdxteu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 2756	2600	ecrdxteu.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
1964	sc.exe
2748	sc.exe
2856	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecrdxteu.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 1716	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	30
PID 2976 wrote to memory of 1716	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	30
PID 2976 wrote to memory of 1716	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	30
PID 2976 wrote to memory of 1716	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	30
PID 2976 wrote to memory of 2772	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	32
PID 2976 wrote to memory of 2772	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	32
PID 2976 wrote to memory of 2772	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	32
PID 2976 wrote to memory of 2772	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	32
PID 2976 wrote to memory of 1964	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	34
PID 2976 wrote to memory of 1964	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	34
PID 2976 wrote to memory of 1964	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	34
PID 2976 wrote to memory of 1964	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	34
PID 2976 wrote to memory of 2748	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	36
PID 2976 wrote to memory of 2748	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	36
PID 2976 wrote to memory of 2748	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	36
PID 2976 wrote to memory of 2748	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	36
PID 2976 wrote to memory of 2856	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	38
PID 2976 wrote to memory of 2856	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	38
PID 2976 wrote to memory of 2856	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	38
PID 2976 wrote to memory of 2856	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	38
PID 2976 wrote to memory of 2984	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	41
PID 2976 wrote to memory of 2984	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	41
PID 2976 wrote to memory of 2984	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	41
PID 2976 wrote to memory of 2984	2976	JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe	41
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43
PID 2600 wrote to memory of 2756	2600	ecrdxteu.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ewjabruy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecrdxteu.exe" C:\Windows\SysWOW64\ewjabruy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ewjabruy binPath= "C:\Windows\SysWOW64\ewjabruy\ecrdxteu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ewjabruy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ewjabruy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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:2984

C:\Windows\SysWOW64\ewjabruy\ecrdxteu.exe
C:\Windows\SysWOW64\ewjabruy\ecrdxteu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a8e160b0eab8a79a750eeb89aa963006.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:2756

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\ecrdxteu.exe

Filesize
14.4MB

MD5
cd0734a2f3278d0feffa1b71664275f9

SHA1
f18d97cbf8515a3f9119b7cc6f829e7122b481aa

SHA256
b77dd845e529332fc26850cd60771047ef02072636cd33b38db7865a6b57aa97

SHA512
aeeb3b240ecd2d565c23a782f1a931a9a07bc35f2730da21469fe560829b7706f4f2f661d9759ed9498ed2e22f26480f25e065d97b61db741028855c3f460524

Download Submit
memory/2600-15-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2756-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2976-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2976-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2976-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2976-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

Filesize
1024KB

Download
memory/2976-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads