tofsee | 31503bdb8b3ee9da6bb91ada24ebe560d7e5edd27b9f01c53f0afce48ceedd55

General

Target

JaffaCakes118_e21181a90f076b9e930a523bce604588.exe
Size

12.0MB
MD5

e21181a90f076b9e930a523bce604588
SHA1

240a200e30ad73dbe737ef12ec5fb2863603b3ad
SHA256

31503bdb8b3ee9da6bb91ada24ebe560d7e5edd27b9f01c53f0afce48ceedd55
SHA512

32d458f689fe9f5e32c06e5d0308c6d7d0f4616747f6043458548615fc780014bf031e327e89a0a16fd013ebee0fe76fb2afbbc9c75d1a87f01c673db555ff4c
SSDEEP

12288:lZv3F8h86NMcoGuc3FXE4WrIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIr:lp3F8Au3FPW

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
4132	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\ewypklmb\ImagePath = "C:\\Windows\\SysWOW64\\ewypklmb\\szlyhuvp.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe

Deletes itself 1 IoCs

pid	Process
668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4348	szlyhuvp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4348 set thread context of 668	4348	szlyhuvp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3808	sc.exe
3736	sc.exe
4116	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3776	2140	WerFault.exe	82
4008	4348	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e21181a90f076b9e930a523bce604588.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	szlyhuvp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 3968	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	83
PID 2140 wrote to memory of 3968	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	83
PID 2140 wrote to memory of 3968	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	83
PID 2140 wrote to memory of 3732	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	85
PID 2140 wrote to memory of 3732	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	85
PID 2140 wrote to memory of 3732	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	85
PID 2140 wrote to memory of 3808	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	87
PID 2140 wrote to memory of 3808	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	87
PID 2140 wrote to memory of 3808	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	87
PID 2140 wrote to memory of 3736	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	90
PID 2140 wrote to memory of 3736	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	90
PID 2140 wrote to memory of 3736	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	90
PID 2140 wrote to memory of 4116	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	92
PID 2140 wrote to memory of 4116	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	92
PID 2140 wrote to memory of 4116	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	92
PID 2140 wrote to memory of 4132	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	95
PID 2140 wrote to memory of 4132	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	95
PID 2140 wrote to memory of 4132	2140	JaffaCakes118_e21181a90f076b9e930a523bce604588.exe	95
PID 4348 wrote to memory of 668	4348	szlyhuvp.exe	101
PID 4348 wrote to memory of 668	4348	szlyhuvp.exe	101
PID 4348 wrote to memory of 668	4348	szlyhuvp.exe	101
PID 4348 wrote to memory of 668	4348	szlyhuvp.exe	101
PID 4348 wrote to memory of 668	4348	szlyhuvp.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e21181a90f076b9e930a523bce604588.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e21181a90f076b9e930a523bce604588.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ewypklmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\szlyhuvp.exe" C:\Windows\SysWOW64\ewypklmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ewypklmb binPath= "C:\Windows\SysWOW64\ewypklmb\szlyhuvp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e21181a90f076b9e930a523bce604588.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ewypklmb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ewypklmb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4116
- 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:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1036
  2⤵
  - Program crash
  PID:3776

C:\Windows\SysWOW64\ewypklmb\szlyhuvp.exe
C:\Windows\SysWOW64\ewypklmb\szlyhuvp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e21181a90f076b9e930a523bce604588.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4348 -s 548
  2⤵
  - Program crash
  PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2140 -ip 2140
1⤵
PID:3656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4348 -ip 4348
1⤵
PID:3188

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\szlyhuvp.exe

Filesize
13.6MB

MD5
570faeffb0e6084dc029493844daac8b

SHA1
b89bdd5b3593a524e8800f0ced6830813f542b29

SHA256
4b987f7e5f9064495c5fc7e98db6264ba45af901f41e967201691d77b7714f8e

SHA512
ed2f779646e8ef715f501c7a5c22c66db0a59778747826c8bafe15f25c5ff546f3852a1f555a2e72e5856998b087d98544f29b6db8b9fef5ac7f1adae0a45670

Download Submit
memory/668-14-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/668-19-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/668-18-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/2140-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2140-9-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2140-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/2140-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2140-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2140-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4348-16-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4348-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4348-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4348-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads