tofsee | 4dc9780c65fae9d38b25e13f2c651e92d442e7a466c55bc75dd91310166ee74c

General

Target

JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe
Size

10.0MB
MD5

7431384f496c4d7218065e3f191b1362
SHA1

52e1475f54f597396d82ce02032422fb80c66d7c
SHA256

4dc9780c65fae9d38b25e13f2c651e92d442e7a466c55bc75dd91310166ee74c
SHA512

a9f66a8e286efd7bafdb2c3b3e6194bf741efa218ea80a634761a9492d35dad121088db7102be806638252ca5791bd8a33568a15a4f3595a3433c662ed704209
SSDEEP

49152:bkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

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
2416	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\jcbnrwrb\ImagePath = "C:\\Windows\\SysWOW64\\jcbnrwrb\\moixtplc.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe

Deletes itself 1 IoCs

pid	Process
3172	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2040	moixtplc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 3172	2040	moixtplc.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4012	sc.exe
4156	sc.exe
1460	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
2332	3204	WerFault.exe	81
1452	2040	WerFault.exe	92

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	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	moixtplc.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 4856	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	82
PID 3204 wrote to memory of 4856	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	82
PID 3204 wrote to memory of 4856	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	82
PID 3204 wrote to memory of 936	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	84
PID 3204 wrote to memory of 936	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	84
PID 3204 wrote to memory of 936	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	84
PID 3204 wrote to memory of 4012	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	86
PID 3204 wrote to memory of 4012	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	86
PID 3204 wrote to memory of 4012	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	86
PID 3204 wrote to memory of 4156	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	88
PID 3204 wrote to memory of 4156	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	88
PID 3204 wrote to memory of 4156	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	88
PID 3204 wrote to memory of 1460	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	90
PID 3204 wrote to memory of 1460	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	90
PID 3204 wrote to memory of 1460	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	90
PID 3204 wrote to memory of 2416	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	93
PID 3204 wrote to memory of 2416	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	93
PID 3204 wrote to memory of 2416	3204	JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe	93
PID 2040 wrote to memory of 3172	2040	moixtplc.exe	98
PID 2040 wrote to memory of 3172	2040	moixtplc.exe	98
PID 2040 wrote to memory of 3172	2040	moixtplc.exe	98
PID 2040 wrote to memory of 3172	2040	moixtplc.exe	98
PID 2040 wrote to memory of 3172	2040	moixtplc.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jcbnrwrb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\moixtplc.exe" C:\Windows\SysWOW64\jcbnrwrb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jcbnrwrb binPath= "C:\Windows\SysWOW64\jcbnrwrb\moixtplc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jcbnrwrb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jcbnrwrb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1460
- 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:2416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 1032
  2⤵
  - Program crash
  PID:2332

C:\Windows\SysWOW64\jcbnrwrb\moixtplc.exe
C:\Windows\SysWOW64\jcbnrwrb\moixtplc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7431384f496c4d7218065e3f191b1362.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 516
  2⤵
  - Program crash
  PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3204 -ip 3204
1⤵
PID:2928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2040 -ip 2040
1⤵
PID:5024

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\moixtplc.exe

Filesize
10.2MB

MD5
d1fadd440530ebb4300a2bbf1f3a34a6

SHA1
9cf7d61b349067802a27722bd8b7570aa256403e

SHA256
10966cc712de34808cebec6a8b0a077c588ce1d5514c0ea278a1004a36c3dcc6

SHA512
32453dc41b39377334b146774451671bd2fc43e65a0fff7f1619100d4a70a5b1f9ece3b5ae81ed963b2efcc14d568d06b90e5522bbf05d101077ec832ddf259b

Download Submit
memory/2040-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2040-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3172-12-0x0000000000D60000-0x0000000000D75000-memory.dmp

Filesize
84KB

Download
memory/3172-14-0x0000000000D60000-0x0000000000D75000-memory.dmp

Filesize
84KB

Download
memory/3172-15-0x0000000000D60000-0x0000000000D75000-memory.dmp

Filesize
84KB

Download
memory/3204-2-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/3204-1-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download
memory/3204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-9-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads