tofsee | c7b71ddfb4b1d6b5f25866b12c5c2ea486242cad1b094b36f465a2313b85daea

General

Target

0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe
Size

11.7MB
MD5

0a997b7a64cc868fdf8f462d7d64b39c
SHA1

d3fa7d86bbc79eddc267c9609a1a396944033fcf
SHA256

c7b71ddfb4b1d6b5f25866b12c5c2ea486242cad1b094b36f465a2313b85daea
SHA512

cc4ecc5ee660f131bd9a9326297c9efd69772482aed6373e408d6b4620523a451b9cf83164e945d940cf3ebd43a96c44d19eb40a121405ef568a95084c12bb2d
SSDEEP

196608:7tPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPX:7

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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

Processes:

netsh.exe

pid process

2780 netsh.exe

pid	process
2780	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\kpasfcqy\ImagePath = "C:\\Windows\\SysWOW64\\kpasfcqy\\bigrwrft.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2680 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bigrwrft.exe

pid process

2576 bigrwrft.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bigrwrft.exe

description pid process target process

PID 2576 set thread context of 2680 2576 bigrwrft.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2840 sc.exe
2468 sc.exe
2684 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2680	svchost.exe

pid	process
2576	bigrwrft.exe

description	pid	process	target process
PID 2576 set thread context of 2680	2576	bigrwrft.exe	svchost.exe

pid	process
2840	sc.exe
2468	sc.exe
2684	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exebigrwrft.exe

description	pid	process	target process
PID 2432 wrote to memory of 2940	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2940	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2940	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2940	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2600	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2600	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2600	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2600	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	cmd.exe
PID 2432 wrote to memory of 2684	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2684	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2684	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2684	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2840	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2840	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2840	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2840	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2468	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2468	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2468	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2468	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	sc.exe
PID 2432 wrote to memory of 2780	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	netsh.exe
PID 2432 wrote to memory of 2780	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	netsh.exe
PID 2432 wrote to memory of 2780	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	netsh.exe
PID 2432 wrote to memory of 2780	2432	0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe	netsh.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe
PID 2576 wrote to memory of 2680	2576	bigrwrft.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2432

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kpasfcqy\
2⤵
PID:2940

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bigrwrft.exe" C:\Windows\SysWOW64\kpasfcqy\
2⤵
PID:2600

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kpasfcqy binPath= "C:\Windows\SysWOW64\kpasfcqy\bigrwrft.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2684

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kpasfcqy "wifi internet conection"
2⤵
- Launches sc.exe
PID:2840

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kpasfcqy
2⤵
- Launches sc.exe
PID:2468

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
PID:2780

C:\Windows\SysWOW64\kpasfcqy\bigrwrft.exe
C:\Windows\SysWOW64\kpasfcqy\bigrwrft.exe /d"C:\Users\Admin\AppData\Local\Temp\0a997b7a64cc868fdf8f462d7d64b39c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bigrwrft.exe
Filesize
12.2MB

MD5
8878484ac39e71a42d77f740f7af5623

SHA1
6e49dbda4e9a153c7ff37f096b2045018bfb9ba5

SHA256
2c9d43e6712c8ac92c3db2015187d5ca47b3c0c2467920c027e8cd37469f1ec8

SHA512
1dabcdfe54b9043b6f03a87a109305e586f29aab9a4941245f4a70c3cbe8eb04200fa2ef474c78749d8c09a8005d89840ebccbf367c18ce57ad965ad2132de70

Download Submit
memory/2432-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2432-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2432-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp

Filesize
1024KB

Download
memory/2432-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2432-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2576-16-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2680-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2680-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2680-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2680-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads