tofsee | f2b1f77c8f3cc3817b73566c28f88827acdb1b48ea8985072817e97b59c5f7ac

General

Target

fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe
Size

11.3MB
MD5

fccc85e0762350fc26fd50646031b5f6
SHA1

9e6636fffc2002b023b246e5c08ff641002ef232
SHA256

f2b1f77c8f3cc3817b73566c28f88827acdb1b48ea8985072817e97b59c5f7ac
SHA512

d4ef35eb8a365f6333565652fd1ddba2d8fd71050cc47860a7eb6ec36eec5a35c9cd9f3a7f48f379b5edbeb9e32883a326267062d67cdb22ec76366d6a319678
SSDEEP

24576:iUqa71YB5DHlommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmG:iF15

Score

10^/10

tofsee evasion persistence 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) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4600 netsh.exe

pid	process
4600	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ytdguffn.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\gijvedcu\ImagePath = "C:\\Windows\\SysWOW64\\gijvedcu\\ytdguffn.exe"	ytdguffn.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:

fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

692 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ytdguffn.exe

pid process

1988 ytdguffn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ytdguffn.exe

description pid process target process

PID 1988 set thread context of 692 1988 ytdguffn.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

2032 sc.exe
3936 sc.exe
1432 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1896 3580 WerFault.exe fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe
1728 1988 WerFault.exe ytdguffn.exe

pid	process
692	svchost.exe

pid	process
1988	ytdguffn.exe

description	pid	process	target process
PID 1988 set thread context of 692	1988	ytdguffn.exe	svchost.exe

pid	process
2032	sc.exe
3936	sc.exe
1432	sc.exe

pid	pid_target	process	target process
1896	3580	WerFault.exe	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe
1728	1988	WerFault.exe	ytdguffn.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exeytdguffn.exe

description	pid	process	target process
PID 3580 wrote to memory of 224	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 224	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 224	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 4540	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 4540	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 4540	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	cmd.exe
PID 3580 wrote to memory of 2032	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 2032	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 2032	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 3936	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 3936	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 3936	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 1432	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 1432	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 1432	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	sc.exe
PID 3580 wrote to memory of 4600	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	netsh.exe
PID 3580 wrote to memory of 4600	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	netsh.exe
PID 3580 wrote to memory of 4600	3580	fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe	netsh.exe
PID 1988 wrote to memory of 692	1988	ytdguffn.exe	svchost.exe
PID 1988 wrote to memory of 692	1988	ytdguffn.exe	svchost.exe
PID 1988 wrote to memory of 692	1988	ytdguffn.exe	svchost.exe
PID 1988 wrote to memory of 692	1988	ytdguffn.exe	svchost.exe
PID 1988 wrote to memory of 692	1988	ytdguffn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3580

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gijvedcu\
2⤵
PID:224

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ytdguffn.exe" C:\Windows\SysWOW64\gijvedcu\
2⤵
PID:4540

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gijvedcu binPath= "C:\Windows\SysWOW64\gijvedcu\ytdguffn.exe /d\"C:\Users\Admin\AppData\Local\Temp\fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gijvedcu "wifi internet conection"
2⤵
- Launches sc.exe
PID:3936

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gijvedcu
2⤵
- Launches sc.exe
PID:1432

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
PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3580 -s 1036
2⤵
- Program crash
PID:1896

C:\Windows\SysWOW64\gijvedcu\ytdguffn.exe
C:\Windows\SysWOW64\gijvedcu\ytdguffn.exe /d"C:\Users\Admin\AppData\Local\Temp\fccc85e0762350fc26fd50646031b5f6_JaffaCakes118.exe"
1⤵
- Sets service image path in registry
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1988 -s 528
2⤵
- Program crash
PID:1728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3580 -ip 3580
1⤵
PID:3284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1988 -ip 1988
1⤵
PID:3076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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\ytdguffn.exe
Filesize
13.3MB

MD5
9d4688042a01ef670a05d1e96d5ddb83

SHA1
9430660724b1a4c24090caef41dd23b9356fdd7b

SHA256
2b48956c3f7847bd811171c535195af7bed6675a6aea336cdff6eb8d37c5e5c5

SHA512
1397d7a1cdc830582b29b4cb2f74df4ce23c20d2c93d572d5c2ba06a731ad8a064ca4fcf1bdfa621df7029f9c5db998f7109b693d272dff78d64f5a8e3fc2ab8

Download Submit
memory/692-15-0x00000000008D0000-0x00000000008E5000-memory.dmp

Filesize
84KB

Download
memory/692-12-0x00000000008D0000-0x00000000008E5000-memory.dmp

Filesize
84KB

Download
memory/692-16-0x00000000008D0000-0x00000000008E5000-memory.dmp

Filesize
84KB

Download
memory/692-18-0x00000000008D0000-0x00000000008E5000-memory.dmp

Filesize
84KB

Download
memory/692-19-0x00000000008D0000-0x00000000008E5000-memory.dmp

Filesize
84KB

Download
memory/1988-10-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/1988-11-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1988-17-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3580-4-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3580-2-0x0000000000500000-0x0000000000513000-memory.dmp

Filesize
76KB

Download
memory/3580-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3580-9-0x0000000000500000-0x0000000000513000-memory.dmp

Filesize
76KB

Download
memory/3580-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads