tofsee | e87a5c719ac7af99f1478732889d5df0a275315b42b3b9aecc8b91333bd9c0af

General

Target

f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe
Size

268KB
MD5

f855c178ba66fef7013303cca97a1a4e
SHA1

26756ba97d394b418af1a6772a226ff2f2c18b55
SHA256

e87a5c719ac7af99f1478732889d5df0a275315b42b3b9aecc8b91333bd9c0af
SHA512

2ede9d6202ab29b1724fa57d3ecc947bf6fe45c1052aefdd70a6f6f53dd9e3e0ed785faaf7e05eb46fa56c327a355b92b3f2b219f0affa85d31c192b29cd2531
SSDEEP

6144:jqs4O6bVLJnq2splH1e24EafBw0+8WloM+nCbVV:1sZL0dfJ4EaZZ+9oM+nmV

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\gouyfkuv = "0"	svchost.exe

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

2484 netsh.exe

pid	process
2484	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\gouyfkuv\ImagePath = "C:\\Windows\\SysWOW64\\gouyfkuv\\pctcuhjd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2624 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pctcuhjd.exe

pid process

2612 pctcuhjd.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pctcuhjd.exe

description pid process target process

PID 2612 set thread context of 2624 2612 pctcuhjd.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

2608 sc.exe
1280 sc.exe
2668 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2624	svchost.exe

pid	process
2612	pctcuhjd.exe

description	pid	process	target process
PID 2612 set thread context of 2624	2612	pctcuhjd.exe	svchost.exe

pid	process
2608	sc.exe
1280	sc.exe
2668	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exepctcuhjd.exe

description	pid	process	target process
PID 1200 wrote to memory of 2192	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2192	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2192	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2192	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2736	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2736	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2736	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2736	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	cmd.exe
PID 1200 wrote to memory of 2668	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2668	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2668	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2668	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2608	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2608	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2608	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2608	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 1280	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 1280	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 1280	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 1280	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	sc.exe
PID 1200 wrote to memory of 2484	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	netsh.exe
PID 1200 wrote to memory of 2484	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	netsh.exe
PID 1200 wrote to memory of 2484	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	netsh.exe
PID 1200 wrote to memory of 2484	1200	f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe	netsh.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe
PID 2612 wrote to memory of 2624	2612	pctcuhjd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1200

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gouyfkuv\
2⤵
PID:2192

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pctcuhjd.exe" C:\Windows\SysWOW64\gouyfkuv\
2⤵
PID:2736

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gouyfkuv binPath= "C:\Windows\SysWOW64\gouyfkuv\pctcuhjd.exe /d\"C:\Users\Admin\AppData\Local\Temp\f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gouyfkuv "wifi internet conection"
2⤵
- Launches sc.exe
PID:2608

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gouyfkuv
2⤵
- Launches sc.exe
PID:1280

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:2484

C:\Windows\SysWOW64\gouyfkuv\pctcuhjd.exe
C:\Windows\SysWOW64\gouyfkuv\pctcuhjd.exe /d"C:\Users\Admin\AppData\Local\Temp\f855c178ba66fef7013303cca97a1a4e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2612

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2624

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
12.4MB

MD5
f7b144d0477ed408a2b42b8ad90b661e

SHA1
250d4ea9d7f8427bf708f7e9b817ba41594b26f8

SHA256
d8c320fb8b546c73569eccf9bfb6c0609dcbd91a58d1c76882e8b174e71a5560

SHA512
d9fea2bac95f600a1064e8a3b94c83720dfd831466dd7ab869219182776051aa34caefd3bee693a1557859b335f77849655fde2818c7054b4e8423edd96b8bfa

Download Submit
memory/1200-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/1200-4-0x0000000000400000-0x00000000023AD000-memory.dmp

Filesize
31.7MB

Download
memory/1200-8-0x0000000000400000-0x00000000023AD000-memory.dmp

Filesize
31.7MB

Download
memory/1200-2-0x00000000003A0000-0x00000000003B3000-memory.dmp

Filesize
76KB

Download
memory/2612-15-0x0000000000400000-0x00000000023AD000-memory.dmp

Filesize
31.7MB

Download
memory/2612-9-0x0000000002540000-0x0000000002640000-memory.dmp

Filesize
1024KB

Download
memory/2612-17-0x0000000000400000-0x00000000023AD000-memory.dmp

Filesize
31.7MB

Download
memory/2624-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2624-13-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2624-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2624-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2624-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2624-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads