tofsee | 592aae666394a3d72e7041676ddd615d31ca54f3a41c3c916580e2692b047ea9

General

Target

f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe
Size

14.4MB
MD5

f93f672e45a5c1129aba812e94192a07
SHA1

595bed5941aa45c13e64f34f370072d28dda19ef
SHA256

592aae666394a3d72e7041676ddd615d31ca54f3a41c3c916580e2692b047ea9
SHA512

32058e8d6b9c3710afa38bf9c9e5fa123cf2442a4de28df09b66ab3ac5fabad998c1bc29a4fec51f9d5dd6dfa80ca5bdb2dad08efca72e1861795cc1d7050632
SSDEEP

49152:+yqI2kmso555555555555555555555555555555555555555555555555555555h:+yqI2

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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

4240 netsh.exe

pid	process
4240	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\lvestcod\ImagePath = "C:\\Windows\\SysWOW64\\lvestcod\\tcwbtsnj.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:

f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4792 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tcwbtsnj.exe

pid process

4712 tcwbtsnj.exe
Drops file in System32 directory 2 IoCs

Processes:

tcwbtsnj.exe

description ioc process

File created C:\Windows\SysWOW64\¤xu tcwbtsnj.exe
File created C:\Windows\SysWOW64\ä?t tcwbtsnj.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tcwbtsnj.exe

description pid process target process

PID 4712 set thread context of 4792 4712 tcwbtsnj.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

1824 sc.exe
1480 sc.exe
4524 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

1380 4324 WerFault.exe f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe
4700 4712 WerFault.exe tcwbtsnj.exe

pid	process
4792	svchost.exe

pid	process
4712	tcwbtsnj.exe

description	ioc	process
File created	C:\Windows\SysWOW64\¤xu	tcwbtsnj.exe
File created	C:\Windows\SysWOW64\ä?t	tcwbtsnj.exe

description	pid	process	target process
PID 4712 set thread context of 4792	4712	tcwbtsnj.exe	svchost.exe

pid	process
1824	sc.exe
1480	sc.exe
4524	sc.exe

pid	pid_target	process	target process
1380	4324	WerFault.exe	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe
4700	4712	WerFault.exe	tcwbtsnj.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exetcwbtsnj.exe

description	pid	process	target process
PID 4324 wrote to memory of 1544	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 1544	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 1544	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 3556	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 3556	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 3556	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	cmd.exe
PID 4324 wrote to memory of 1824	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 1824	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 1824	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 1480	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 1480	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 1480	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 4524	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 4524	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 4524	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	sc.exe
PID 4324 wrote to memory of 4240	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	netsh.exe
PID 4324 wrote to memory of 4240	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	netsh.exe
PID 4324 wrote to memory of 4240	4324	f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe	netsh.exe
PID 4712 wrote to memory of 4792	4712	tcwbtsnj.exe	svchost.exe
PID 4712 wrote to memory of 4792	4712	tcwbtsnj.exe	svchost.exe
PID 4712 wrote to memory of 4792	4712	tcwbtsnj.exe	svchost.exe
PID 4712 wrote to memory of 4792	4712	tcwbtsnj.exe	svchost.exe
PID 4712 wrote to memory of 4792	4712	tcwbtsnj.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4324

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lvestcod\
2⤵
PID:1544

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe" C:\Windows\SysWOW64\lvestcod\
2⤵
PID:3556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lvestcod binPath= "C:\Windows\SysWOW64\lvestcod\tcwbtsnj.exe /d\"C:\Users\Admin\AppData\Local\Temp\f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1824

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lvestcod "wifi internet conection"
2⤵
- Launches sc.exe
PID:1480

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lvestcod
2⤵
- Launches sc.exe
PID:4524

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:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1040
2⤵
- Program crash
PID:1380

C:\Windows\SysWOW64\lvestcod\tcwbtsnj.exe
C:\Windows\SysWOW64\lvestcod\tcwbtsnj.exe /d"C:\Users\Admin\AppData\Local\Temp\f93f672e45a5c1129aba812e94192a07_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4712

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4712 -s 516
2⤵
- Program crash
PID:4700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4324 -ip 4324
1⤵
PID:428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4712 -ip 4712
1⤵
PID:3740

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tcwbtsnj.exe

Filesize
10.4MB

MD5
69b768ad43fb11a78134dc707d7f99c9

SHA1
7f385ad2e156e1ffc5ed35e52b32e4c9531d071d

SHA256
07beb554287a23eeb745cac87d02aa3e7ba3bba6bc4772c6543b23d7463cb8f9

SHA512
07026cd7848288551530c2d1086cfadc2a77628fcf9aa38393344b4284451d0d544af9fc7d6b4d024039e1f54a709aab45dc990194fce00c8c7486922675f4a2

Download Submit
memory/4324-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/4324-2-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/4324-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-7-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4324-8-0x00000000006D0000-0x00000000006E3000-memory.dmp

Filesize
76KB

Download
memory/4712-10-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/4712-11-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4712-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4792-12-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/4792-15-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/4792-16-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/4792-17-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download
memory/4792-19-0x0000000000CD0000-0x0000000000CE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads