tofsee | 4cd18aa5224d0d65b237774ae232b11bf9dd9a722e2707dce442f843e571ff71

General

Target

e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe
Size

11.6MB
MD5

e0a170a43c2af3360b666b2aa742fbd2
SHA1

a8a594c2742acbc4ee2adcad2b94eddc25357c32
SHA256

4cd18aa5224d0d65b237774ae232b11bf9dd9a722e2707dce442f843e571ff71
SHA512

a67c44b013daf360812d5b1009007db4c6ff846429aed8261bbfab6778e41c3f07409d3e9ab05f61ac7db77d96bccb00d10b8521208dd0420527b8855fdd15bf
SSDEEP

6144:BeeKozztQBnWJ4ZF+PAb1nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn:BeeKozCBnuA

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
2524	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\bfjzopyx\ImagePath = "C:\\Windows\\SysWOW64\\bfjzopyx\\ujwsedwi.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	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4996	ujwsedwi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4996 set thread context of 1992	4996	ujwsedwi.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4584	sc.exe
2064	sc.exe
4104	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
1784	4240	WerFault.exe	82
5080	4996	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ujwsedwi.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4240 wrote to memory of 2612	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	83
PID 4240 wrote to memory of 2612	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	83
PID 4240 wrote to memory of 2612	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	83
PID 4240 wrote to memory of 324	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	85
PID 4240 wrote to memory of 324	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	85
PID 4240 wrote to memory of 324	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	85
PID 4240 wrote to memory of 4584	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	87
PID 4240 wrote to memory of 4584	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	87
PID 4240 wrote to memory of 4584	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	87
PID 4240 wrote to memory of 2064	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	90
PID 4240 wrote to memory of 2064	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	90
PID 4240 wrote to memory of 2064	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	90
PID 4240 wrote to memory of 4104	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	92
PID 4240 wrote to memory of 4104	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	92
PID 4240 wrote to memory of 4104	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	92
PID 4240 wrote to memory of 2524	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	95
PID 4240 wrote to memory of 2524	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	95
PID 4240 wrote to memory of 2524	4240	e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe	95
PID 4996 wrote to memory of 1992	4996	ujwsedwi.exe	101
PID 4996 wrote to memory of 1992	4996	ujwsedwi.exe	101
PID 4996 wrote to memory of 1992	4996	ujwsedwi.exe	101
PID 4996 wrote to memory of 1992	4996	ujwsedwi.exe	101
PID 4996 wrote to memory of 1992	4996	ujwsedwi.exe	101

C:\Users\Admin\AppData\Local\Temp\e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bfjzopyx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ujwsedwi.exe" C:\Windows\SysWOW64\bfjzopyx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bfjzopyx binPath= "C:\Windows\SysWOW64\bfjzopyx\ujwsedwi.exe /d\"C:\Users\Admin\AppData\Local\Temp\e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bfjzopyx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bfjzopyx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4104
- 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:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4240 -s 804
  2⤵
  - Program crash
  PID:1784

C:\Windows\SysWOW64\bfjzopyx\ujwsedwi.exe
C:\Windows\SysWOW64\bfjzopyx\ujwsedwi.exe /d"C:\Users\Admin\AppData\Local\Temp\e0a170a43c2af3360b666b2aa742fbd2_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4996 -s 516
  2⤵
  - Program crash
  PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4240 -ip 4240
1⤵
PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4996 -ip 4996
1⤵
PID:3740

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\ujwsedwi.exe

Filesize
13.7MB

MD5
aa592a0def44ebafbfe036f2238166c7

SHA1
44ccf25cb0f41d3063c55c4c6e0082fef8dc6892

SHA256
e12c6270443efe00e53bc42f5bcd0f2fe1b0d1f12cee8329c51be79db5b40e1e

SHA512
919bae4e5e403435d19aa9222fb548df3f3a427539603afcebb774e0724280b48dffa5f6e04c677ada5975aa1954b51aa5a0ea95ee82fbc7c35e8c9deb3c7c2c

Download Submit
memory/1992-15-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/1992-13-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/1992-16-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/4240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4240-1-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/4240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4240-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4240-9-0x00000000009D0000-0x00000000009E3000-memory.dmp

Filesize
76KB

Download
memory/4240-2-0x00000000009D0000-0x00000000009E3000-memory.dmp

Filesize
76KB

Download
memory/4996-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4996-12-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4996-17-0x0000000000400000-0x000000000086C000-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