tofsee | 5e39aee1e32aadd42e1def5fd7f89386978c7bf73ae2d873e4eeb55b13fdaa2c

General

Target

517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe
Size

13.6MB
MD5

517123fcc7badee52a30705f4cdaf630
SHA1

f67f1cd917f8f5aee2d3577c73362afc124221f2
SHA256

5e39aee1e32aadd42e1def5fd7f89386978c7bf73ae2d873e4eeb55b13fdaa2c
SHA512

0ba2ce07b6c90b0852262fd59b2643956dd92deb66339f9fc17cddc3fd600984c7056620eb01e05a6ee1076c761cd35bb2682462189dc083a6fba2ef5de6aba2
SSDEEP

196608:7XPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPH: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

4372 netsh.exe

pid	process
4372	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\sbtdigti\ImagePath = "C:\\Windows\\SysWOW64\\sbtdigti\\elxktghb.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2668 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

elxktghb.exe

pid process

3184 elxktghb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

elxktghb.exe

description pid process target process

PID 3184 set thread context of 2668 3184 elxktghb.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

1468 sc.exe
1220 sc.exe
2624 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2668	svchost.exe

pid	process
3184	elxktghb.exe

description	pid	process	target process
PID 3184 set thread context of 2668	3184	elxktghb.exe	svchost.exe

pid	process
1468	sc.exe
1220	sc.exe
2624	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 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

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

908 4164 WerFault.exe 517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe
3576 3184 WerFault.exe elxktghb.exe

pid	pid_target	process	target process
908	4164	WerFault.exe	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe
3576	3184	WerFault.exe	elxktghb.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exeelxktghb.exe

description	pid	process	target process
PID 4164 wrote to memory of 1712	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 1712	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 1712	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 4112	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 4112	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 4112	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	cmd.exe
PID 4164 wrote to memory of 1468	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 1468	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 1468	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 1220	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 1220	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 1220	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 2624	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 2624	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 2624	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	sc.exe
PID 4164 wrote to memory of 4372	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	netsh.exe
PID 4164 wrote to memory of 4372	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	netsh.exe
PID 4164 wrote to memory of 4372	4164	517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe	netsh.exe
PID 3184 wrote to memory of 2668	3184	elxktghb.exe	svchost.exe
PID 3184 wrote to memory of 2668	3184	elxktghb.exe	svchost.exe
PID 3184 wrote to memory of 2668	3184	elxktghb.exe	svchost.exe
PID 3184 wrote to memory of 2668	3184	elxktghb.exe	svchost.exe
PID 3184 wrote to memory of 2668	3184	elxktghb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4164

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sbtdigti\
2⤵
PID:1712

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\elxktghb.exe" C:\Windows\SysWOW64\sbtdigti\
2⤵
PID:4112

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create sbtdigti binPath= "C:\Windows\SysWOW64\sbtdigti\elxktghb.exe /d\"C:\Users\Admin\AppData\Local\Temp\517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1468

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description sbtdigti "wifi internet conection"
2⤵
- Launches sc.exe
PID:1220

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start sbtdigti
2⤵
- Launches sc.exe
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
PID:4372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4164 -s 808
2⤵
- Program crash
PID:908

C:\Windows\SysWOW64\sbtdigti\elxktghb.exe
C:\Windows\SysWOW64\sbtdigti\elxktghb.exe /d"C:\Users\Admin\AppData\Local\Temp\517123fcc7badee52a30705f4cdaf630_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3184

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3184 -s 516
2⤵
- Program crash
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4164 -ip 4164
1⤵
PID:2640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3184 -ip 3184
1⤵
PID:2248

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\elxktghb.exe
Filesize
10.5MB

MD5
62f325fbee42818027ab1e8cec9cce31

SHA1
51c43e8d239a72ad8a36e8d5397837dbce5a91aa

SHA256
cf8b21ac4f2b647391b0ed0d3084b0c41333c2623993f364fa72bb9480959497

SHA512
59e8e4c45b07f3befdb58bed96097aac6f8f9e4cfbf364d193db8a7b846f51f92737e596e2ccf0abaefe659bbadb661f07287ba027aabce52c1fd9a8bf88d4f4

Download Submit
memory/2668-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2668-11-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/2668-17-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3184-12-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3184-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4164-1-0x0000000000B20000-0x0000000000C20000-memory.dmp

Filesize
1024KB

Download
memory/4164-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4164-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4164-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4164-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4164-8-0x0000000000400000-0x0000000000871000-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