tofsee | dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f

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
30-12-2024 20:54

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General

Target

JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe
Size

287KB
MD5

df10072c1fc4a8e3b0544afa68a86296
SHA1

77b06d7aae6a21ba7e3b5a668f252108276e8f77
SHA256

dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f
SHA512

cf54a8c9c40934091c05bd5d01f07db90525497fad403b966d5a5b36e6218292734bb3c894c30d263893e68baf9974d3e29458a5a9d5368c9a55e3c26294c34b
SSDEEP

3072:EcJFj9Ec2xTndjpPsEluBFWP3Dlu0ay/MCZryAGs4AB37NryJvMT8RROhSm4+lXU:DbjPwndjpxlubC3TKTs4AqCTYMI2K

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\ycsgwkrw = "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
2628	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\ycsgwkrw\ImagePath = "C:\\Windows\\SysWOW64\\ycsgwkrw\\rdyvcbbp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3048	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2576	rdyvcbbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 3048	2576	rdyvcbbp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2896	sc.exe
2692	sc.exe
2732	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	rdyvcbbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2800	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	30
PID 2660 wrote to memory of 2800	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	30
PID 2660 wrote to memory of 2800	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	30
PID 2660 wrote to memory of 2800	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	30
PID 2660 wrote to memory of 2672	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	32
PID 2660 wrote to memory of 2672	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	32
PID 2660 wrote to memory of 2672	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	32
PID 2660 wrote to memory of 2672	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	32
PID 2660 wrote to memory of 2896	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	34
PID 2660 wrote to memory of 2896	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	34
PID 2660 wrote to memory of 2896	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	34
PID 2660 wrote to memory of 2896	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	34
PID 2660 wrote to memory of 2692	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	36
PID 2660 wrote to memory of 2692	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	36
PID 2660 wrote to memory of 2692	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	36
PID 2660 wrote to memory of 2692	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	36
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	38
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	38
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	38
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	38
PID 2660 wrote to memory of 2628	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	41
PID 2660 wrote to memory of 2628	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	41
PID 2660 wrote to memory of 2628	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	41
PID 2660 wrote to memory of 2628	2660	JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe	41
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43
PID 2576 wrote to memory of 3048	2576	rdyvcbbp.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ycsgwkrw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rdyvcbbp.exe" C:\Windows\SysWOW64\ycsgwkrw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ycsgwkrw binPath= "C:\Windows\SysWOW64\ycsgwkrw\rdyvcbbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ycsgwkrw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ycsgwkrw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- 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:2628

C:\Windows\SysWOW64\ycsgwkrw\rdyvcbbp.exe
C:\Windows\SysWOW64\ycsgwkrw\rdyvcbbp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfb026acc3b422e65c75bc4d105d8f383e97fa0990b5631123e47ff9b7abb08f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576
- 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:3048

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\rdyvcbbp.exe

Filesize
13.8MB

MD5
55bdf4e5a313724652ef711bfd43a115

SHA1
0c60e89aeac60df8ed9fd97c58db4ddc4db022e2

SHA256
1fa07d0cb123b3c21034280ac50685f070a2c1df8f3bb94dc9708ffc4b3caee1

SHA512
33b6898cbcb7546f21ef441f1556b01dd4aa72132a9513d8e6373750e8ea8bacb224726eb0c25cb8b6087677e5533d9bfb87eda72b7fabea2932905a2fd83878

Download Submit
memory/2576-17-0x0000000000400000-0x0000000002B91000-memory.dmp

Filesize
39.6MB

Download
memory/2660-1-0x0000000002D10000-0x0000000002E10000-memory.dmp

Filesize
1024KB

Download
memory/2660-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-4-0x0000000000400000-0x0000000002B91000-memory.dmp

Filesize
39.6MB

Download
memory/2660-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-9-0x0000000000400000-0x0000000002B91000-memory.dmp

Filesize
39.6MB

Download
memory/3048-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3048-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3048-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads