tofsee | a8cc9358a6bb7013fdc8abf9a1371c7b22a3b7311eec92dae140c844463d95bd

General

Target

f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe
Size

12.1MB
MD5

f17afb5f20aa53a7c7ffdb7f03fde7fc
SHA1

7cdf905690e6c242fda8d6a4882294c65c6f649c
SHA256

a8cc9358a6bb7013fdc8abf9a1371c7b22a3b7311eec92dae140c844463d95bd
SHA512

266dd4974d978144e8045b292bff3f61ee268105c2c92919ec4cc60358e42a1f40fb4c5bb3307accf1c2decbe935fddaf912c92492868ea5603384b4cc2db712
SSDEEP

24576:+jDuKnh7YzbKBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBn:+nh

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

1620 netsh.exe

pid	process
1620	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\lsjelkve\ImagePath = "C:\\Windows\\SysWOW64\\lsjelkve\\sncmrwom.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:

f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

sncmrwom.exe

pid process

4736 sncmrwom.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

sncmrwom.exe

description pid process target process

PID 4736 set thread context of 2872 4736 sncmrwom.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

4020 sc.exe
2924 sc.exe
2892 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4736	sncmrwom.exe

description	pid	process	target process
PID 4736 set thread context of 2872	4736	sncmrwom.exe	svchost.exe

pid	process
4020	sc.exe
2924	sc.exe
2892	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exesncmrwom.exe

description	pid	process	target process
PID 876 wrote to memory of 3516	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 3516	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 3516	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 4012	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 4012	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 4012	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	cmd.exe
PID 876 wrote to memory of 4020	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 4020	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 4020	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2924	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2924	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2924	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2892	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2892	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 2892	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	sc.exe
PID 876 wrote to memory of 1620	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	netsh.exe
PID 876 wrote to memory of 1620	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	netsh.exe
PID 876 wrote to memory of 1620	876	f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe	netsh.exe
PID 4736 wrote to memory of 2872	4736	sncmrwom.exe	svchost.exe
PID 4736 wrote to memory of 2872	4736	sncmrwom.exe	svchost.exe
PID 4736 wrote to memory of 2872	4736	sncmrwom.exe	svchost.exe
PID 4736 wrote to memory of 2872	4736	sncmrwom.exe	svchost.exe
PID 4736 wrote to memory of 2872	4736	sncmrwom.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:876

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lsjelkve\
2⤵
PID:3516

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sncmrwom.exe" C:\Windows\SysWOW64\lsjelkve\
2⤵
PID:4012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lsjelkve binPath= "C:\Windows\SysWOW64\lsjelkve\sncmrwom.exe /d\"C:\Users\Admin\AppData\Local\Temp\f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4020

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lsjelkve "wifi internet conection"
2⤵
- Launches sc.exe
PID:2924

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lsjelkve
2⤵
- Launches sc.exe
PID:2892

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:1620

C:\Windows\SysWOW64\lsjelkve\sncmrwom.exe
C:\Windows\SysWOW64\lsjelkve\sncmrwom.exe /d"C:\Users\Admin\AppData\Local\Temp\f17afb5f20aa53a7c7ffdb7f03fde7fc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4736

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:2872

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\sncmrwom.exe

Filesize
14.7MB

MD5
22cf17a8970e4916308a6fed85fe43ae

SHA1
087d2e069915c846e2f3278b9431c39a56e877a7

SHA256
1f4b1b1aad89cdec28cc40efca15cde771eeca97bc6c4d79ee87f65b99242a3f

SHA512
ccdbf5ce47f162bcdc4b6f59d79ad54aee92a1abece1760af4c1ac559e6c8328fd2c1cbd141624d4d79d31407ab2f748c98439aaed1c27295ac6786155159ff7

Download Submit
memory/876-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/876-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/876-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/876-23-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/876-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2872-17-0x0000000000B00000-0x0000000000B15000-memory.dmp

Filesize
84KB

Download
memory/2872-11-0x0000000000B00000-0x0000000000B15000-memory.dmp

Filesize
84KB

Download
memory/2872-14-0x0000000000B00000-0x0000000000B15000-memory.dmp

Filesize
84KB

Download
memory/2872-16-0x0000000000B00000-0x0000000000B15000-memory.dmp

Filesize
84KB

Download
memory/2872-25-0x0000000000B00000-0x0000000000B15000-memory.dmp

Filesize
84KB

Download
memory/4736-9-0x00000000004E0000-0x00000000004F3000-memory.dmp

Filesize
76KB

Download
memory/4736-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4736-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4736-8-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads