tofsee | 8acfd8a5a4901ca5bf938fe131c5088aff69f00b9b2e2daeefdec896a9c95763

General

Target

JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe
Size

11.0MB
MD5

36da92091674ea2f46532a6cc29c86e5
SHA1

db5804956ba8e333b975c1294bf953a9a0c692a4
SHA256

8acfd8a5a4901ca5bf938fe131c5088aff69f00b9b2e2daeefdec896a9c95763
SHA512

c5e00c3a48844a73e49201a52973cfb98e11d45aee4132225872519e2842e4b6bf3b662a7fad2b89adc1c784405a88e9986a8578764f85b3399e2ab699a2a6bc
SSDEEP

3072:qrLSAaIXFM9X/WWIyOEfEDQMZWecFKmZ:sNWktyH9V

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
2180	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\yefiujyl\ImagePath = "C:\\Windows\\SysWOW64\\yefiujyl\\ilttrptc.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_36da92091674ea2f46532a6cc29c86e5.exe

Deletes itself 1 IoCs

pid	Process
1668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	ilttrptc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 1668	2660	ilttrptc.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3740	sc.exe
5028	sc.exe
3712	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

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ilttrptc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 4132	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	82
PID 1288 wrote to memory of 4132	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	82
PID 1288 wrote to memory of 4132	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	82
PID 1288 wrote to memory of 860	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	84
PID 1288 wrote to memory of 860	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	84
PID 1288 wrote to memory of 860	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	84
PID 1288 wrote to memory of 3740	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	86
PID 1288 wrote to memory of 3740	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	86
PID 1288 wrote to memory of 3740	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	86
PID 1288 wrote to memory of 5028	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	88
PID 1288 wrote to memory of 5028	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	88
PID 1288 wrote to memory of 5028	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	88
PID 1288 wrote to memory of 3712	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	90
PID 1288 wrote to memory of 3712	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	90
PID 1288 wrote to memory of 3712	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	90
PID 2660 wrote to memory of 1668	2660	ilttrptc.exe	93
PID 2660 wrote to memory of 1668	2660	ilttrptc.exe	93
PID 2660 wrote to memory of 1668	2660	ilttrptc.exe	93
PID 2660 wrote to memory of 1668	2660	ilttrptc.exe	93
PID 2660 wrote to memory of 1668	2660	ilttrptc.exe	93
PID 1288 wrote to memory of 2180	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	94
PID 1288 wrote to memory of 2180	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	94
PID 1288 wrote to memory of 2180	1288	JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe	94

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yefiujyl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ilttrptc.exe" C:\Windows\SysWOW64\yefiujyl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yefiujyl binPath= "C:\Windows\SysWOW64\yefiujyl\ilttrptc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yefiujyl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yefiujyl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3712
- 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:2180

C:\Windows\SysWOW64\yefiujyl\ilttrptc.exe
C:\Windows\SysWOW64\yefiujyl\ilttrptc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_36da92091674ea2f46532a6cc29c86e5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1668

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\ilttrptc.exe

Filesize
10.9MB

MD5
de5b6bf169fe1f06ce930bc58c91f0de

SHA1
32e87277aa8a632f952af046985b874ae0051b6b

SHA256
4b7fc95182a898eaa24e502cca0adf4c84e48a14a82c9bea4a36297872a5dcdd

SHA512
3927a9adb2f3c459b6de4c24673ed90e7382d5c75e0f4bd5507d568a0f332d92ff05ea61868f244d2b72ccb5076cbd4e48cdb2601c7219a45c62e11f7a5077a3

Download Submit
memory/1288-14-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1288-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1288-1-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/1288-0-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/1668-13-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1668-8-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1668-16-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1668-17-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/1668-18-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2660-6-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

Filesize
4KB

Download
memory/2660-11-0x000000005F000000-0x000000005F011000-memory.dmp

Filesize
68KB

Download
memory/2660-9-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads