tofsee | 98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3

General

Target

JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe
Size

160KB
MD5

7bb2733e97ba152441a12ce8af74aaed
SHA1

24909286b6b30a7eacf9ea85d801025758c2855c
SHA256

98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3
SHA512

e3169bac012d03ef8f7b40646c77e5298f8977ed3dd87f320c43e0b75f709c6f461216ca85e644cc1d7f3d3aa4dd4fdf0853cbcd0aa05f2730b1e71561db7dbc
SSDEEP

1536:fae1yygZJ4PWKemQPvB450xEmnVGgkwyYsZSn/wnmwophe6e2SohlD222CHRPARx:a1AuRzSdDYsI/wnrsBSohN21CH9ARo2

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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
3836	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\mttiajei\ImagePath = "C:\\Windows\\SysWOW64\\mttiajei\\nfxedufm.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe

Deletes itself 1 IoCs

pid	Process
2708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3900	nfxedufm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3900 set thread context of 2708	3900	nfxedufm.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4056	sc.exe
4116	sc.exe
2532	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1384	3900	WerFault.exe	92
2408	4400	WerFault.exe	81

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	netsh.exe
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	nfxedufm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 228	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	82
PID 4400 wrote to memory of 228	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	82
PID 4400 wrote to memory of 228	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	82
PID 4400 wrote to memory of 4904	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	84
PID 4400 wrote to memory of 4904	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	84
PID 4400 wrote to memory of 4904	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	84
PID 4400 wrote to memory of 4056	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	86
PID 4400 wrote to memory of 4056	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	86
PID 4400 wrote to memory of 4056	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	86
PID 4400 wrote to memory of 4116	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	88
PID 4400 wrote to memory of 4116	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	88
PID 4400 wrote to memory of 4116	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	88
PID 4400 wrote to memory of 2532	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	90
PID 4400 wrote to memory of 2532	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	90
PID 4400 wrote to memory of 2532	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	90
PID 3900 wrote to memory of 2708	3900	nfxedufm.exe	93
PID 3900 wrote to memory of 2708	3900	nfxedufm.exe	93
PID 3900 wrote to memory of 2708	3900	nfxedufm.exe	93
PID 3900 wrote to memory of 2708	3900	nfxedufm.exe	93
PID 3900 wrote to memory of 2708	3900	nfxedufm.exe	93
PID 4400 wrote to memory of 3836	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	96
PID 4400 wrote to memory of 3836	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	96
PID 4400 wrote to memory of 3836	4400	JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mttiajei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nfxedufm.exe" C:\Windows\SysWOW64\mttiajei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mttiajei binPath= "C:\Windows\SysWOW64\mttiajei\nfxedufm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mttiajei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mttiajei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2532
- 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:3836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 1040
  2⤵
  - Program crash
  PID:2408

C:\Windows\SysWOW64\mttiajei\nfxedufm.exe
C:\Windows\SysWOW64\mttiajei\nfxedufm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_98a711617a2ec118caeb49fadc1e28e233e556d5ab21d39def5f7219fb50ddf3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3900
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3900 -s 532
  2⤵
  - Program crash
  PID:1384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3900 -ip 3900
1⤵
PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4400 -ip 4400
1⤵
PID:2676

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\nfxedufm.exe

Filesize
13.4MB

MD5
3f5f1c888c0005620a0a880f20d52b3d

SHA1
ef214ee3279b319b3c7cd95040ac930605333177

SHA256
5b0949086f543d639436ebfb7e0e2f53d49acef3e2e86cb4ea870dded3ceb8d4

SHA512
d3f7b36e8d7f8d77cd69becb2b7067269b2144e3db7bbc943aee6ce98b1979753d686eba9c472d84db98e7eb675cb008202c1b45d070e1905beedb76c53cb000

Download Submit
memory/2708-9-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/2708-21-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/2708-20-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/2708-19-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/2708-12-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/3900-6-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3900-8-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3900-7-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3900-14-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4400-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4400-17-0x0000000000500000-0x0000000000513000-memory.dmp

Filesize
76KB

Download
memory/4400-16-0x00000000004C0000-0x00000000004CD000-memory.dmp

Filesize
52KB

Download
memory/4400-15-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4400-0-0x00000000004C0000-0x00000000004CD000-memory.dmp

Filesize
52KB

Download
memory/4400-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4400-1-0x0000000000500000-0x0000000000513000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads