tofsee | dd651993ceb08056970a31d73f2fdc68de47647ecdeb1156ee293f6cfc85e477

General

Target

404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe
Size

14.3MB
MD5

404df06ef809bfbaa5e59b015840d718
SHA1

822c7f9c09f43af6f2436ac0fdb22b5338a202d6
SHA256

dd651993ceb08056970a31d73f2fdc68de47647ecdeb1156ee293f6cfc85e477
SHA512

309c015ac12444f1d8222bddbcac43c29ee1f783ea1d23c7214c36ad4038050e72ff27c86328ad4c30a1b052c43f17fd7525a54bcc967d71cf6b3d07ecdc4c3c
SSDEEP

393216:aUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUE:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2288	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\iugdbbub\ImagePath = "C:\\Windows\\SysWOW64\\iugdbbub\\wueccsbr.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2456	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1828	wueccsbr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1828 set thread context of 2456	1828	wueccsbr.exe	103

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2208	sc.exe
5116	sc.exe
780	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1932	3168	WerFault.exe	82
4140	1828	WerFault.exe	96

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wueccsbr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 4516	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	86
PID 3168 wrote to memory of 4516	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	86
PID 3168 wrote to memory of 4516	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	86
PID 3168 wrote to memory of 2424	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	88
PID 3168 wrote to memory of 2424	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	88
PID 3168 wrote to memory of 2424	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	88
PID 3168 wrote to memory of 780	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	90
PID 3168 wrote to memory of 780	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	90
PID 3168 wrote to memory of 780	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	90
PID 3168 wrote to memory of 2208	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	92
PID 3168 wrote to memory of 2208	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	92
PID 3168 wrote to memory of 2208	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	92
PID 3168 wrote to memory of 5116	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	94
PID 3168 wrote to memory of 5116	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	94
PID 3168 wrote to memory of 5116	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	94
PID 3168 wrote to memory of 2288	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	97
PID 3168 wrote to memory of 2288	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	97
PID 3168 wrote to memory of 2288	3168	404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe	97
PID 1828 wrote to memory of 2456	1828	wueccsbr.exe	103
PID 1828 wrote to memory of 2456	1828	wueccsbr.exe	103
PID 1828 wrote to memory of 2456	1828	wueccsbr.exe	103
PID 1828 wrote to memory of 2456	1828	wueccsbr.exe	103
PID 1828 wrote to memory of 2456	1828	wueccsbr.exe	103

C:\Users\Admin\AppData\Local\Temp\404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iugdbbub\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4516
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wueccsbr.exe" C:\Windows\SysWOW64\iugdbbub\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iugdbbub binPath= "C:\Windows\SysWOW64\iugdbbub\wueccsbr.exe /d\"C:\Users\Admin\AppData\Local\Temp\404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iugdbbub "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iugdbbub
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5116
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 1036
  2⤵
  - Program crash
  PID:1932

C:\Windows\SysWOW64\iugdbbub\wueccsbr.exe
C:\Windows\SysWOW64\iugdbbub\wueccsbr.exe /d"C:\Users\Admin\AppData\Local\Temp\404df06ef809bfbaa5e59b015840d718_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 516
  2⤵
  - Program crash
  PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3168 -ip 3168
1⤵
PID:820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1828 -ip 1828
1⤵
PID:4624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.9MB

MD5
83c0cfa7bfce69724d2a16d2a5c4977e

SHA1
d6c678ffd5fee269f0ffe5afea430aa0ef59f110

SHA256
629237becf45b5adf48e9f994ab8f7fad3c8c644091e2416661f7d29f8f16bea

SHA512
ef10572797bf9aae185de7b3acc29053c12fdf50b233f099c54717984e2db808848cbd76e73334160536d2be9d6a52771ae01782996eb6fb4d3d68280eebdddf

Download Submit
memory/1828-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1828-19-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1828-13-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/1828-11-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2456-14-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/2456-16-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/2456-17-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/3168-8-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/3168-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/3168-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/3168-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-1-0x0000000000530000-0x0000000000630000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads