tofsee | 9d9854a5672f5a0bcfe94537c97ddcd3d16b2320e1fc1b5952283b6e7259601f

General

Target

fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe
Size

14.1MB
MD5

fce2c4006ec80862de2dad2537422c1b
SHA1

2671a0fa2921d83c7a24e38d529b4f86c76876ea
SHA256

9d9854a5672f5a0bcfe94537c97ddcd3d16b2320e1fc1b5952283b6e7259601f
SHA512

1397044c98fc65a55507915b9da426ddef6abd15c798de5e91aa90a88478ba2d608c66c5e3c805cc4ce2c8ced4c5e557b23be08051a2c2a85bc73ae74d50405e
SSDEEP

24576:3UqN67OT8888888888888888888888888888888888888888888888888888888U:3K7

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

1668 netsh.exe

pid	process
1668	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\clagjswx\ImagePath = "C:\\Windows\\SysWOW64\\clagjswx\\yppiyxym.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:

fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4024 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yppiyxym.exe

pid process

2136 yppiyxym.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yppiyxym.exe

description pid process target process

PID 2136 set thread context of 4024 2136 yppiyxym.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

4136 sc.exe
1528 sc.exe
4308 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

3928 4672 WerFault.exe fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe
3420 2136 WerFault.exe yppiyxym.exe

pid	process
4024	svchost.exe

pid	process
2136	yppiyxym.exe

description	pid	process	target process
PID 2136 set thread context of 4024	2136	yppiyxym.exe	svchost.exe

pid	process
4136	sc.exe
1528	sc.exe
4308	sc.exe

pid	pid_target	process	target process
3928	4672	WerFault.exe	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe
3420	2136	WerFault.exe	yppiyxym.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exeyppiyxym.exe

description	pid	process	target process
PID 4672 wrote to memory of 3744	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 3744	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 3744	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 3244	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 3244	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 3244	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	cmd.exe
PID 4672 wrote to memory of 4136	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 4136	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 4136	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 1528	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 1528	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 1528	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 4308	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 4308	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 4308	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	sc.exe
PID 4672 wrote to memory of 1668	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	netsh.exe
PID 4672 wrote to memory of 1668	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	netsh.exe
PID 4672 wrote to memory of 1668	4672	fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe	netsh.exe
PID 2136 wrote to memory of 4024	2136	yppiyxym.exe	svchost.exe
PID 2136 wrote to memory of 4024	2136	yppiyxym.exe	svchost.exe
PID 2136 wrote to memory of 4024	2136	yppiyxym.exe	svchost.exe
PID 2136 wrote to memory of 4024	2136	yppiyxym.exe	svchost.exe
PID 2136 wrote to memory of 4024	2136	yppiyxym.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4672

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\clagjswx\
2⤵
PID:3744

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yppiyxym.exe" C:\Windows\SysWOW64\clagjswx\
2⤵
PID:3244

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create clagjswx binPath= "C:\Windows\SysWOW64\clagjswx\yppiyxym.exe /d\"C:\Users\Admin\AppData\Local\Temp\fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4136

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description clagjswx "wifi internet conection"
2⤵
- Launches sc.exe
PID:1528

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start clagjswx
2⤵
- Launches sc.exe
PID:4308

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:1668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4672 -s 1184
2⤵
- Program crash
PID:3928

C:\Windows\SysWOW64\clagjswx\yppiyxym.exe
C:\Windows\SysWOW64\clagjswx\yppiyxym.exe /d"C:\Users\Admin\AppData\Local\Temp\fce2c4006ec80862de2dad2537422c1b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2136 -s 192
2⤵
- Program crash
PID:3420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4672 -ip 4672
1⤵
PID:2500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2136 -ip 2136
1⤵
PID:4700

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\yppiyxym.exe
Filesize
10.9MB

MD5
716491740da4035ec936644567a87fe0

SHA1
3a8c489c5f2371c13f933669beae117433f9c354

SHA256
ab5ca08ccaa4671f54af4f7225382f30c84b0617ef192d325268288633ff0c39

SHA512
d20aaad9cd5ad52e343f52fc87a518e3c461d65af10bfad1b94d3eb8f8f1893e60f02946aad68f3682256e0a7ed0f9a250694d45feb0e71b14ad78358e518b16

Download Submit
memory/2136-10-0x00000000024A0000-0x00000000025A0000-memory.dmp

Filesize
1024KB

Download
memory/2136-15-0x0000000000400000-0x00000000023B0000-memory.dmp

Filesize
31.7MB

Download
memory/2136-18-0x0000000000400000-0x00000000023B0000-memory.dmp

Filesize
31.7MB

Download
memory/4024-11-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4024-14-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4024-17-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4024-19-0x00000000009C0000-0x00000000009D5000-memory.dmp

Filesize
84KB

Download
memory/4672-4-0x0000000000400000-0x00000000023B0000-memory.dmp

Filesize
31.7MB

Download
memory/4672-2-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/4672-8-0x0000000000400000-0x00000000023B0000-memory.dmp

Filesize
31.7MB

Download
memory/4672-9-0x00000000040F0000-0x0000000004103000-memory.dmp

Filesize
76KB

Download
memory/4672-1-0x0000000002400000-0x0000000002500000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads