tofsee | 74bf590e3f287fa0ba08de8a862b0a4a6e52b8288d86cc3b0bde13c7592006f2

General

Target

JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe
Size

11.0MB
MD5

b35702eac2cbff5e9bdd048ee8726a57
SHA1

8c4b9cf7ee254b511e84b6606105f5bbf6bcc848
SHA256

74bf590e3f287fa0ba08de8a862b0a4a6e52b8288d86cc3b0bde13c7592006f2
SHA512

e96d7d6632d94b1355d6b539d68e22f37d427e30ac32269991533a4202ad315dd3b1da5e3162de817d7602c924ce9f2444115ffc8c2c6104a7b28444b18f46c2
SSDEEP

49152:wNxtFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFR:W

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
3244	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\vvhqgipr\ImagePath = "C:\\Windows\\SysWOW64\\vvhqgipr\\jlfuqmiz.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe

Deletes itself 1 IoCs

pid	Process
4028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	jlfuqmiz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 4028	4948	jlfuqmiz.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3172	sc.exe
2876	sc.exe
4736	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
428	2252	WerFault.exe	82
392	4948	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jlfuqmiz.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 4576	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	83
PID 2252 wrote to memory of 4576	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	83
PID 2252 wrote to memory of 4576	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	83
PID 2252 wrote to memory of 4168	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	85
PID 2252 wrote to memory of 4168	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	85
PID 2252 wrote to memory of 4168	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	85
PID 2252 wrote to memory of 3172	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	87
PID 2252 wrote to memory of 3172	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	87
PID 2252 wrote to memory of 3172	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	87
PID 2252 wrote to memory of 2876	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	89
PID 2252 wrote to memory of 2876	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	89
PID 2252 wrote to memory of 2876	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	89
PID 2252 wrote to memory of 4736	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	91
PID 2252 wrote to memory of 4736	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	91
PID 2252 wrote to memory of 4736	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	91
PID 2252 wrote to memory of 3244	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	94
PID 2252 wrote to memory of 3244	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	94
PID 2252 wrote to memory of 3244	2252	JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe	94
PID 4948 wrote to memory of 4028	4948	jlfuqmiz.exe	100
PID 4948 wrote to memory of 4028	4948	jlfuqmiz.exe	100
PID 4948 wrote to memory of 4028	4948	jlfuqmiz.exe	100
PID 4948 wrote to memory of 4028	4948	jlfuqmiz.exe	100
PID 4948 wrote to memory of 4028	4948	jlfuqmiz.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vvhqgipr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jlfuqmiz.exe" C:\Windows\SysWOW64\vvhqgipr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vvhqgipr binPath= "C:\Windows\SysWOW64\vvhqgipr\jlfuqmiz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vvhqgipr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vvhqgipr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4736
- 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:3244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 600
  2⤵
  - Program crash
  PID:428

C:\Windows\SysWOW64\vvhqgipr\jlfuqmiz.exe
C:\Windows\SysWOW64\vvhqgipr\jlfuqmiz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b35702eac2cbff5e9bdd048ee8726a57.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 516
  2⤵
  - Program crash
  PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2252 -ip 2252
1⤵
PID:3344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4948 -ip 4948
1⤵
PID:2120

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\jlfuqmiz.exe

Filesize
10.4MB

MD5
3dd6f2651b57b28c2a5d7c0d3cc8a82d

SHA1
82eb71c29e9ad6a781852dbaf6ba3182c475aac1

SHA256
c982ff2d9ea6a53b4ad0f206847440fffeca6bf771932f17c047400acdefca31

SHA512
52353f50da7832680fc77ee48edbfad6ec55660d51218e0f1074402279daafcfcaad3f1c42934a5f092ee2f7acbc6cbb5128d31e05c78395fc423923733bf0a6

Download Submit
memory/2252-0-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/2252-1-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/2252-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-8-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/2252-7-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/2252-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/4028-10-0x0000000000AF0000-0x0000000000B05000-memory.dmp

Filesize
84KB

Download
memory/4028-12-0x0000000000AF0000-0x0000000000B05000-memory.dmp

Filesize
84KB

Download
memory/4028-13-0x0000000000AF0000-0x0000000000B05000-memory.dmp

Filesize
84KB

Download
memory/4948-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads