tofsee | dffa7c3f427791f3aeb3fe6d000d226fcafa5adefadedc8a8b030cb997d7a315

General

Target

f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe
Size

10.7MB
MD5

f914186ccbdfd07ad5d83756aec22683
SHA1

afbda57591f20395314fcb02dc2e8901e82109f8
SHA256

dffa7c3f427791f3aeb3fe6d000d226fcafa5adefadedc8a8b030cb997d7a315
SHA512

5fe1598a516bc3bd80e5214df084052ec870cf110b83fd491c94dcc44541dedb144c125e7c9957b550c82ea6a416c56acd139393f4c32d07127c65494f8b7687
SSDEEP

24576:PjCj10HSqGgeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeG:P/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

5000 netsh.exe

pid	process
5000	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\enhwyttw\ImagePath = "C:\\Windows\\SysWOW64\\enhwyttw\\ajznocrx.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:

f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

ajznocrx.exe

pid process

336 ajznocrx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ajznocrx.exe

description pid process target process

PID 336 set thread context of 4824 336 ajznocrx.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

1028 sc.exe
1668 sc.exe
4784 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
336	ajznocrx.exe

description	pid	process	target process
PID 336 set thread context of 4824	336	ajznocrx.exe	svchost.exe

pid	process
1028	sc.exe
1668	sc.exe
4784	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exeajznocrx.exe

description	pid	process	target process
PID 3808 wrote to memory of 4672	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 4672	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 4672	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 756	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 756	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 756	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	cmd.exe
PID 3808 wrote to memory of 1668	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 1668	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 1668	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 4784	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 4784	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 4784	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 1028	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 1028	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 1028	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	sc.exe
PID 3808 wrote to memory of 5000	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	netsh.exe
PID 3808 wrote to memory of 5000	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	netsh.exe
PID 3808 wrote to memory of 5000	3808	f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe	netsh.exe
PID 336 wrote to memory of 4824	336	ajznocrx.exe	svchost.exe
PID 336 wrote to memory of 4824	336	ajznocrx.exe	svchost.exe
PID 336 wrote to memory of 4824	336	ajznocrx.exe	svchost.exe
PID 336 wrote to memory of 4824	336	ajznocrx.exe	svchost.exe
PID 336 wrote to memory of 4824	336	ajznocrx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3808

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\enhwyttw\
2⤵
PID:4672

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ajznocrx.exe" C:\Windows\SysWOW64\enhwyttw\
2⤵
PID:756

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create enhwyttw binPath= "C:\Windows\SysWOW64\enhwyttw\ajznocrx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description enhwyttw "wifi internet conection"
2⤵
- Launches sc.exe
PID:4784

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start enhwyttw
2⤵
- Launches sc.exe
PID:1028

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:5000

C:\Windows\SysWOW64\enhwyttw\ajznocrx.exe
C:\Windows\SysWOW64\enhwyttw\ajznocrx.exe /d"C:\Users\Admin\AppData\Local\Temp\f914186ccbdfd07ad5d83756aec22683_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:336

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4824

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\ajznocrx.exe
Filesize
10.1MB

MD5
d5b571620b0c114b51af20c118e58851

SHA1
8315138c39bc93580fc65039107eff161a4c65b7

SHA256
828b16924b0814d6ad5231b804c2085c9c083e3b4873432c6d567371557f3acb

SHA512
a8f98cf02ae323d67bd2e84ce5536b6529fb56461218e17d466f89028b2f1a155acf8f436b3889020d1dcf293aae7741e8442ffe75307cd0b0d875812f8193dd

Download Submit
memory/336-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/336-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/336-8-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/336-9-0x0000000000D30000-0x0000000000D43000-memory.dmp

Filesize
76KB

Download
memory/3808-2-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/3808-1-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/3808-23-0x00000000004E0000-0x00000000005E0000-memory.dmp

Filesize
1024KB

Download
memory/3808-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3808-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4824-14-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/4824-17-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/4824-16-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/4824-11-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/4824-25-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads