tofsee | 57c5476b2f41ec87a6b74153c52b442d47172ad8f59a578e4ac6e902dec3be3f

General

Target

JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
Size

10.4MB
MD5

fc3bb27a0cf68b519a1ff98126da4083
SHA1

d52434e6d7326478e4d2931b379ed30c31ead569
SHA256

57c5476b2f41ec87a6b74153c52b442d47172ad8f59a578e4ac6e902dec3be3f
SHA512

8fded19f127deaa5d52d8c88b89009ebf1626ada44556fcc50e9cd048c399c31d89668232db2790afbbbf0072cb5806a7f00e92391c0815f39211cbf9c7ffcdc
SSDEEP

3072:EOsUA8KZQ/IxsPVg4nkvzaHWgSjqdF0w2Uyopz9ZeCqJXXfehv1Ijoxw9xkaaaaK:eUA8GV2e4nYWHEjqPt9cCqxmhv1pxQ

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
2704	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\ucxafbur\ImagePath = "C:\\Windows\\SysWOW64\\ucxafbur\\jdzfqasy.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe

Deletes itself 1 IoCs

pid	Process
2180	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4768	jdzfqasy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4768 set thread context of 2180	4768	jdzfqasy.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3960	sc.exe
1188	sc.exe
3024	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
2668	4700	WerFault.exe	84
3512	4768	WerFault.exe	95

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	svchost.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	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jdzfqasy.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 2280	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	85
PID 4700 wrote to memory of 2280	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	85
PID 4700 wrote to memory of 2280	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	85
PID 4700 wrote to memory of 4312	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	87
PID 4700 wrote to memory of 4312	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	87
PID 4700 wrote to memory of 4312	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	87
PID 4700 wrote to memory of 3960	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	89
PID 4700 wrote to memory of 3960	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	89
PID 4700 wrote to memory of 3960	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	89
PID 4700 wrote to memory of 1188	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	91
PID 4700 wrote to memory of 1188	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	91
PID 4700 wrote to memory of 1188	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	91
PID 4700 wrote to memory of 3024	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	93
PID 4700 wrote to memory of 3024	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	93
PID 4700 wrote to memory of 3024	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	93
PID 4700 wrote to memory of 2704	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	96
PID 4700 wrote to memory of 2704	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	96
PID 4700 wrote to memory of 2704	4700	JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe	96
PID 4768 wrote to memory of 2180	4768	jdzfqasy.exe	102
PID 4768 wrote to memory of 2180	4768	jdzfqasy.exe	102
PID 4768 wrote to memory of 2180	4768	jdzfqasy.exe	102
PID 4768 wrote to memory of 2180	4768	jdzfqasy.exe	102
PID 4768 wrote to memory of 2180	4768	jdzfqasy.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ucxafbur\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jdzfqasy.exe" C:\Windows\SysWOW64\ucxafbur\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ucxafbur binPath= "C:\Windows\SysWOW64\ucxafbur\jdzfqasy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ucxafbur "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ucxafbur
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3024
- 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:2704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4700 -s 1048
  2⤵
  - Program crash
  PID:2668

C:\Windows\SysWOW64\ucxafbur\jdzfqasy.exe
C:\Windows\SysWOW64\ucxafbur\jdzfqasy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fc3bb27a0cf68b519a1ff98126da4083.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 516
  2⤵
  - Program crash
  PID:3512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4700 -ip 4700
1⤵
PID:2084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4768 -ip 4768
1⤵
PID:2584

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\jdzfqasy.exe

Filesize
14.7MB

MD5
a5376931f99cba391aaeb68b301bb107

SHA1
b29961b4457cfe841d7ed15608811aaaa8c2345e

SHA256
e03744b3529ad8dfbf0580199e0b99fef01d6210a5113ac4b017d3e2dd59c593

SHA512
647e6d80d5340773c3dfc8e62263d43cb021148d65450a1ab2826d303e9aaa91f6d0bf3b1d8e405e7822fcd7132765771745897deb8ce321afd77e807309e161

Download Submit
memory/2180-16-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/2180-14-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/2180-17-0x0000000000940000-0x0000000000955000-memory.dmp

Filesize
84KB

Download
memory/4700-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4700-2-0x0000000000E10000-0x0000000000E23000-memory.dmp

Filesize
76KB

Download
memory/4700-9-0x0000000000E10000-0x0000000000E23000-memory.dmp

Filesize
76KB

Download
memory/4700-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4700-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4700-1-0x0000000000990000-0x0000000000A90000-memory.dmp

Filesize
1024KB

Download
memory/4768-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4768-13-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4768-12-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4768-18-0x0000000000400000-0x000000000086C000-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