tofsee | b3ef346a16f90c3811847840e66397ca8c9938707e37cfd274ee6bb9004c741d

General

Target

f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe
Size

11.5MB
MD5

f4c9ca0aae067a11649370278de2a937
SHA1

e1fc4e42abfe1accb7e200d21f1f0d329838e81e
SHA256

b3ef346a16f90c3811847840e66397ca8c9938707e37cfd274ee6bb9004c741d
SHA512

8062c679c66c895dd3173ccfa56eacf6b5dbeaa6c5d60712ba3c59f05cddd053ff79209486fc0c9063973ba06e9aa32532d58cd74cf56a5e255b2550d95ae487
SSDEEP

24576:OjCj10HSqGgeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeO:O/D

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

4440 netsh.exe

pid	process
4440	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\tevkultq\ImagePath = "C:\\Windows\\SysWOW64\\tevkultq\\xbimorht.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:

f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

xbimorht.exe

pid process

2244 xbimorht.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xbimorht.exe

description pid process target process

PID 2244 set thread context of 4140 2244 xbimorht.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

396 sc.exe
2372 sc.exe
1940 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2244	xbimorht.exe

description	pid	process	target process
PID 2244 set thread context of 4140	2244	xbimorht.exe	svchost.exe

pid	process
396	sc.exe
2372	sc.exe
1940	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exexbimorht.exe

description	pid	process	target process
PID 4004 wrote to memory of 4120	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 4120	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 4120	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 5052	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 5052	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 5052	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	cmd.exe
PID 4004 wrote to memory of 396	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 396	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 396	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2372	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2372	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 2372	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 1940	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 1940	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 1940	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	sc.exe
PID 4004 wrote to memory of 4440	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	netsh.exe
PID 4004 wrote to memory of 4440	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	netsh.exe
PID 4004 wrote to memory of 4440	4004	f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe	netsh.exe
PID 2244 wrote to memory of 4140	2244	xbimorht.exe	svchost.exe
PID 2244 wrote to memory of 4140	2244	xbimorht.exe	svchost.exe
PID 2244 wrote to memory of 4140	2244	xbimorht.exe	svchost.exe
PID 2244 wrote to memory of 4140	2244	xbimorht.exe	svchost.exe
PID 2244 wrote to memory of 4140	2244	xbimorht.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4004

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tevkultq\
2⤵
PID:4120

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xbimorht.exe" C:\Windows\SysWOW64\tevkultq\
2⤵
PID:5052

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tevkultq binPath= "C:\Windows\SysWOW64\tevkultq\xbimorht.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:396

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tevkultq "wifi internet conection"
2⤵
- Launches sc.exe
PID:2372

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tevkultq
2⤵
- Launches sc.exe
PID:1940

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:4440

C:\Windows\SysWOW64\tevkultq\xbimorht.exe
C:\Windows\SysWOW64\tevkultq\xbimorht.exe /d"C:\Users\Admin\AppData\Local\Temp\f4c9ca0aae067a11649370278de2a937_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2244

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4140

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\xbimorht.exe

Filesize
13.3MB

MD5
7e3db69e42091967b602f5454cdd330d

SHA1
97b22b37df2d9ead91d6497ed80aff29cd089366

SHA256
90481aa7a2567484a7c4db15534b26cdb8053c10fb0c26e0d7662cc3c17b0c27

SHA512
3741e4f0315f831225d1748de8ed38abae079093701e552c17b045720a88082f9ed2a87c40cb7fd2df9084c19529fe87f870969f3ab21e9df962153fa6de62e0

Download Submit
memory/2244-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2244-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2244-8-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/2244-9-0x0000000000D30000-0x0000000000D43000-memory.dmp

Filesize
76KB

Download
memory/4004-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4004-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/4004-21-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/4004-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4004-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4140-14-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4140-17-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4140-16-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4140-11-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4140-25-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads