tofsee | f7c6f0e23614caa687edfba30db9617ba7fb0c970a6c5da20869028f49ca8277

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
01-01-2025 07:49

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General

Target

JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe
Size

11.8MB
MD5

4cdc93147bb55ed9dac436b38de5a8fe
SHA1

6c46c60153d0383a10c215ac620f915e9d28779d
SHA256

f7c6f0e23614caa687edfba30db9617ba7fb0c970a6c5da20869028f49ca8277
SHA512

23b3fd888b1ed64cd9e4d317baffe0de88ada725299a4c3c234235e72c6e80c241fe9a12b3ec1d1dacfd06f3b025dafbdf7e17e9029a9c1611f2a74f67f7dec3
SSDEEP

196608:bXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:b

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\iylygcue = "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
2472	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\iylygcue\ImagePath = "C:\\Windows\\SysWOW64\\iylygcue\\rybzaaqe.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2648	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2964	rybzaaqe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2964 set thread context of 2648	2964	rybzaaqe.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2588	sc.exe
2556	sc.exe
2624	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.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	rybzaaqe.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2816	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	30
PID 2736 wrote to memory of 2816	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	30
PID 2736 wrote to memory of 2816	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	30
PID 2736 wrote to memory of 2816	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	30
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	32
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	32
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	32
PID 2736 wrote to memory of 2476	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	32
PID 2736 wrote to memory of 2588	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	34
PID 2736 wrote to memory of 2588	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	34
PID 2736 wrote to memory of 2588	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	34
PID 2736 wrote to memory of 2588	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	34
PID 2736 wrote to memory of 2556	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	36
PID 2736 wrote to memory of 2556	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	36
PID 2736 wrote to memory of 2556	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	36
PID 2736 wrote to memory of 2556	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	36
PID 2736 wrote to memory of 2624	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	38
PID 2736 wrote to memory of 2624	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	38
PID 2736 wrote to memory of 2624	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	38
PID 2736 wrote to memory of 2624	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	38
PID 2736 wrote to memory of 2472	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	41
PID 2736 wrote to memory of 2472	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	41
PID 2736 wrote to memory of 2472	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	41
PID 2736 wrote to memory of 2472	2736	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	41
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43
PID 2964 wrote to memory of 2648	2964	rybzaaqe.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iylygcue\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rybzaaqe.exe" C:\Windows\SysWOW64\iylygcue\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iylygcue binPath= "C:\Windows\SysWOW64\iylygcue\rybzaaqe.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iylygcue "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iylygcue
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2624
- 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:2472

C:\Windows\SysWOW64\iylygcue\rybzaaqe.exe
C:\Windows\SysWOW64\iylygcue\rybzaaqe.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2964
- 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:2648

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\rybzaaqe.exe

Filesize
14.1MB

MD5
dc61f1b81c6e92c5778f5f1439733412

SHA1
fce2a9448b247748ebfb8e2d0130290f03daf1fe

SHA256
76896ceb88f686291c312e3e792518ec583d6b5140b2c8fe873b04235b25e25e

SHA512
693e7be148f17f9bb9b47e9186cce56dbd317df9d7a858ae7d55e835610952fc5cc901e01fb90c23dfe1fb137052070453568117b75cc7a5ad1c0101feffbac8

Download Submit
memory/2648-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2648-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2648-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2736-1-0x00000000009F0000-0x0000000000AF0000-memory.dmp

Filesize
1024KB

Download
memory/2736-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2736-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2736-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2736-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2964-15-0x0000000000400000-0x0000000000871000-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