tofsee | 395523cf56f7bb9497764d72ed71bab457bc86cd338e46ee4efe470777c6670c

General

Target

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe
Size

142KB
MD5

fb665d4a9976f7a8d7d53b4ee8d3a3fd
SHA1

b2bcda3ea607a76f1f96d7b464bcec2950bc3da4
SHA256

395523cf56f7bb9497764d72ed71bab457bc86cd338e46ee4efe470777c6670c
SHA512

78bcc6ac3db476f1bb330c3bbf0fd18306d184c1b2ca189aa20bbd5dd0728a824f475141375ccb194aac76aefde1afc6dcfc0d34e348d8bc415f86dcf4f55ad7
SSDEEP

3072:3O8/FLfg+6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b37:F9wzwFLnKP46uC

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
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

Processes:

netsh.exe

pid process

4736 netsh.exe

pid	process
4736	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\menryubz\ImagePath = "C:\\Windows\\SysWOW64\\menryubz\\mqxhhvfb.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

Processes:

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4408 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

mqxhhvfb.exe

pid process

1752 mqxhhvfb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

mqxhhvfb.exe

description pid process target process

PID 1752 set thread context of 4408 1752 mqxhhvfb.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

4296 sc.exe
4284 sc.exe
4924 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4408	svchost.exe

pid	process
1752	mqxhhvfb.exe

description	pid	process	target process
PID 1752 set thread context of 4408	1752	mqxhhvfb.exe	svchost.exe

pid	process
4296	sc.exe
4284	sc.exe
4924	sc.exe

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

Processes:

netsh.exe

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

Processes:

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.execmd.exesc.exesc.exesc.execmd.exenetsh.exemqxhhvfb.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb665d4a9976f7a8d7d53b4ee8d3a3fd_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	mqxhhvfb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exemqxhhvfb.exe

description	pid	process	target process
PID 5004 wrote to memory of 2820	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 2820	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 2820	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 1224	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 1224	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 1224	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	cmd.exe
PID 5004 wrote to memory of 4924	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4924	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4924	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4296	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4296	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4296	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4284	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4284	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4284	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	sc.exe
PID 5004 wrote to memory of 4736	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 5004 wrote to memory of 4736	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 5004 wrote to memory of 4736	5004	fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe	netsh.exe
PID 1752 wrote to memory of 4408	1752	mqxhhvfb.exe	svchost.exe
PID 1752 wrote to memory of 4408	1752	mqxhhvfb.exe	svchost.exe
PID 1752 wrote to memory of 4408	1752	mqxhhvfb.exe	svchost.exe
PID 1752 wrote to memory of 4408	1752	mqxhhvfb.exe	svchost.exe
PID 1752 wrote to memory of 4408	1752	mqxhhvfb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\menryubz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mqxhhvfb.exe" C:\Windows\SysWOW64\menryubz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create menryubz binPath= "C:\Windows\SysWOW64\menryubz\mqxhhvfb.exe /d\"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description menryubz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start menryubz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4284
- 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:4736

C:\Windows\SysWOW64\menryubz\mqxhhvfb.exe
C:\Windows\SysWOW64\menryubz\mqxhhvfb.exe /d"C:\Users\Admin\AppData\Local\Temp\fb665d4a9976f7a8d7d53b4ee8d3a3fd_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4408

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\mqxhhvfb.exe

Filesize
11.1MB

MD5
411f5476a5711516d6b40f7dc0e648f8

SHA1
524a134ec49f03d78cba859cd62e02fb5ba0f2a6

SHA256
cb44fc446568206770b5113a933571e051586140f4a5d6cf674e382b1c5ba445

SHA512
952043b057623332509c38dce7862e0b7f8fad45350449d9416c20026fddd527208d0fdd9dde66ff2cbc68779768dab5016bacdb6e089f0c597bcaef61f09b71

Download Submit
memory/1752-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1752-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4408-8-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/4408-10-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/4408-12-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/5004-0-0x0000000000510000-0x0000000000511000-memory.dmp

Filesize
4KB

Download
memory/5004-1-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/5004-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/5004-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads