tofsee | c07eb0172055e3ff6ffeb30ec5c8edebd323ddfb1753d8d5089a72d0e7abced0

General

Target

fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe
Size

12.2MB
MD5

fd7ca2df468933a0b8ba3b1a8d9c74a0
SHA1

d0903c4479a5a653815b1f90c7e1fa5f249425cb
SHA256

c07eb0172055e3ff6ffeb30ec5c8edebd323ddfb1753d8d5089a72d0e7abced0
SHA512

b84f8011ec5962d2f1a482212aa5626582639bdd141de62b8a19ba5e8af35772739a218bc0d7fe5f777b9f840bcac8432a7a65cb197b0ce77c51e9d8359540b3
SSDEEP

49152:GsOuBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBF:GL

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
2724	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\vbxtdwol\ImagePath = "C:\\Windows\\SysWOW64\\vbxtdwol\\nlvttjsi.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
228	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3248	nlvttjsi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3248 set thread context of 228	3248	nlvttjsi.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
116	sc.exe
2688	sc.exe
2496	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
3672	2896	WerFault.exe	82
4876	3248	WerFault.exe	94

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	fd7ca2df468933a0b8ba3b1a8d9c74a0_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	netsh.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	nlvttjsi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 4564	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	83
PID 2896 wrote to memory of 4564	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	83
PID 2896 wrote to memory of 4564	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	83
PID 2896 wrote to memory of 840	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	85
PID 2896 wrote to memory of 840	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	85
PID 2896 wrote to memory of 840	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	85
PID 2896 wrote to memory of 116	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	87
PID 2896 wrote to memory of 116	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	87
PID 2896 wrote to memory of 116	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	87
PID 2896 wrote to memory of 2688	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	89
PID 2896 wrote to memory of 2688	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	89
PID 2896 wrote to memory of 2688	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	89
PID 2896 wrote to memory of 2496	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	92
PID 2896 wrote to memory of 2496	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	92
PID 2896 wrote to memory of 2496	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	92
PID 2896 wrote to memory of 2724	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	95
PID 2896 wrote to memory of 2724	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	95
PID 2896 wrote to memory of 2724	2896	fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe	95
PID 3248 wrote to memory of 228	3248	nlvttjsi.exe	101
PID 3248 wrote to memory of 228	3248	nlvttjsi.exe	101
PID 3248 wrote to memory of 228	3248	nlvttjsi.exe	101
PID 3248 wrote to memory of 228	3248	nlvttjsi.exe	101
PID 3248 wrote to memory of 228	3248	nlvttjsi.exe	101

C:\Users\Admin\AppData\Local\Temp\fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vbxtdwol\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nlvttjsi.exe" C:\Windows\SysWOW64\vbxtdwol\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vbxtdwol binPath= "C:\Windows\SysWOW64\vbxtdwol\nlvttjsi.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vbxtdwol "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vbxtdwol
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- 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:2724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 1036
  2⤵
  - Program crash
  PID:3672

C:\Windows\SysWOW64\vbxtdwol\nlvttjsi.exe
C:\Windows\SysWOW64\vbxtdwol\nlvttjsi.exe /d"C:\Users\Admin\AppData\Local\Temp\fd7ca2df468933a0b8ba3b1a8d9c74a0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3248 -s 524
  2⤵
  - Program crash
  PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2896 -ip 2896
1⤵
PID:3968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3248 -ip 3248
1⤵
PID:2052

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\nlvttjsi.exe

Filesize
11.2MB

MD5
b69d384a46c6b1851e35d97bfde8cf01

SHA1
687f58e195a03072ba782ac04012fefbdf38ccf5

SHA256
6287e67360cdaa911b35e024324b95962019665a4fb3f257ef2af4f8f2ff8044

SHA512
5efa64304a9df8977ccdb23c2d6ded90c95e289b9b47bd605b777b7b7a26bd868961a8c52fc95ed6e6e1a2400b04df06950599e0044b2acb329380bc3907c49e

Download Submit
memory/228-15-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/228-13-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/228-17-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/2896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/2896-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-9-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/2896-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2896-2-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/3248-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3248-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3248-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3248-19-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads