tofsee | 797808465480def87e2d18fc4a86b69ab31d19f5c87a6d8b1add7d72902e83ce

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23/08/2024, 13:08

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General

Target

bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe
Size

11.2MB
MD5

bbdacfb055cd9a8e21959643be78b43f
SHA1

05fabb2d2299e9741c3c86c7ddf1ae95f31fecb8
SHA256

797808465480def87e2d18fc4a86b69ab31d19f5c87a6d8b1add7d72902e83ce
SHA512

b0a191e1e12dc9807d6666a5f56c2a08eb22f06002e8d3927df41e2535f0c6da8b62ed1a8d26fe718ae000dbb35571c01d8b6094ba261b2f1b3eba184e127473
SSDEEP

196608:nsvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvn:n

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

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\tvhmjlik = "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
2668	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\tvhmjlik\ImagePath = "C:\\Windows\\SysWOW64\\tvhmjlik\\ykfcjiiw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
532	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2616	ykfcjiiw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2616 set thread context of 532	2616	ykfcjiiw.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2784	sc.exe
2732	sc.exe
2768	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	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	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.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	ykfcjiiw.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2796	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2796	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2796	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2796	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	30
PID 2480 wrote to memory of 2604	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2604	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2604	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2604	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	32
PID 2480 wrote to memory of 2784	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2784	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2784	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2784	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	34
PID 2480 wrote to memory of 2732	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2732	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2732	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2732	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	36
PID 2480 wrote to memory of 2768	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2768	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2768	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2768	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	38
PID 2480 wrote to memory of 2668	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	41
PID 2480 wrote to memory of 2668	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	41
PID 2480 wrote to memory of 2668	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	41
PID 2480 wrote to memory of 2668	2480	bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe	41
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43
PID 2616 wrote to memory of 532	2616	ykfcjiiw.exe	43

C:\Users\Admin\AppData\Local\Temp\bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tvhmjlik\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykfcjiiw.exe" C:\Windows\SysWOW64\tvhmjlik\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tvhmjlik binPath= "C:\Windows\SysWOW64\tvhmjlik\ykfcjiiw.exe /d\"C:\Users\Admin\AppData\Local\Temp\bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tvhmjlik "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tvhmjlik
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- 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:2668

C:\Windows\SysWOW64\tvhmjlik\ykfcjiiw.exe
C:\Windows\SysWOW64\tvhmjlik\ykfcjiiw.exe /d"C:\Users\Admin\AppData\Local\Temp\bbdacfb055cd9a8e21959643be78b43f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2616
- 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:532

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\ykfcjiiw.exe

Filesize
10.7MB

MD5
e76858acd9fee6a4ae4c5a18b5101462

SHA1
7c58cff4250c4d6571a87a86ece0e15cf8ae8489

SHA256
2af263056e604108e95a234e6183a0839153765a615ac614a4df30b6f8acdf0f

SHA512
b94dee48cd523c6c036abc3d1c960b098ac3b0d3ffa587d8ae4c3dbb3d3ca67ac6a1287dca386fa6a109b6511493096ebdc0a232a98f7bf985290ece6b7fdfe6

Download Submit
memory/532-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/532-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/532-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/532-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/532-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download
memory/2480-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2480-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2480-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2480-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2616-17-0x0000000000400000-0x0000000000871000-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