tofsee | eb4f398465dd5dac1636447a265f692a73e3be0bc91f94df72ddd123cae98d84

General

Target

c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
Size

12.8MB
MD5

c83d89624f4b413b33a8535e942fb543
SHA1

2644db3a8706369e8cadbde5480f9252d25ddbbe
SHA256

eb4f398465dd5dac1636447a265f692a73e3be0bc91f94df72ddd123cae98d84
SHA512

8f1c620a475f490ce2257cab8d2f411c6d28546f310ba9a20fe1351d2a8085eea79cf9839809332070731695a7bd6de206ef2b456b3cc8268b243647fe66c7b3
SSDEEP

49152:V2mNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNd:Q

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
4480	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\apadppeu\ImagePath = "C:\\Windows\\SysWOW64\\apadppeu\\nhdjuewc.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2304	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1936	nhdjuewc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 2304	1936	nhdjuewc.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1960	sc.exe
3464	sc.exe
4988	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
220	3240	WerFault.exe	81
228	1936	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	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nhdjuewc.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 4820	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	82
PID 3240 wrote to memory of 4820	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	82
PID 3240 wrote to memory of 4820	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	82
PID 3240 wrote to memory of 1548	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	84
PID 3240 wrote to memory of 1548	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	84
PID 3240 wrote to memory of 1548	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	84
PID 3240 wrote to memory of 4988	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	86
PID 3240 wrote to memory of 4988	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	86
PID 3240 wrote to memory of 4988	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	86
PID 3240 wrote to memory of 1960	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	88
PID 3240 wrote to memory of 1960	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	88
PID 3240 wrote to memory of 1960	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	88
PID 3240 wrote to memory of 3464	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	90
PID 3240 wrote to memory of 3464	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	90
PID 3240 wrote to memory of 3464	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	90
PID 3240 wrote to memory of 4480	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	93
PID 3240 wrote to memory of 4480	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	93
PID 3240 wrote to memory of 4480	3240	c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe	93
PID 1936 wrote to memory of 2304	1936	nhdjuewc.exe	98
PID 1936 wrote to memory of 2304	1936	nhdjuewc.exe	98
PID 1936 wrote to memory of 2304	1936	nhdjuewc.exe	98
PID 1936 wrote to memory of 2304	1936	nhdjuewc.exe	98
PID 1936 wrote to memory of 2304	1936	nhdjuewc.exe	98

C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\apadppeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhdjuewc.exe" C:\Windows\SysWOW64\apadppeu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create apadppeu binPath= "C:\Windows\SysWOW64\apadppeu\nhdjuewc.exe /d\"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description apadppeu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start apadppeu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3464
- 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:4480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3240 -s 584
  2⤵
  - Program crash
  PID:220

C:\Windows\SysWOW64\apadppeu\nhdjuewc.exe
C:\Windows\SysWOW64\apadppeu\nhdjuewc.exe /d"C:\Users\Admin\AppData\Local\Temp\c83d89624f4b413b33a8535e942fb543_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1936 -s 536
  2⤵
  - Program crash
  PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3240 -ip 3240
1⤵
PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1936 -ip 1936
1⤵
PID:3172

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\nhdjuewc.exe

Filesize
13.8MB

MD5
58bd6aacece36b3c7cf8bc4978ca5588

SHA1
a312c1ac409de7312d5467cd336e5af47852564c

SHA256
18ef9e87e74fa65063185f629f5dcc6fb58b50b01685c50505c94894890f4a28

SHA512
7fd3abfd3beaa3aacd01f48aea316c74c5317810d961f33a5f017afddc63e5b69668e25218a6cacc09d01f9b5fe87aeeef40ccf66c9d2e3d96b32080b9236104

Download Submit
memory/1936-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1936-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1936-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2304-12-0x0000000000470000-0x0000000000485000-memory.dmp

Filesize
84KB

Download
memory/2304-14-0x0000000000470000-0x0000000000485000-memory.dmp

Filesize
84KB

Download
memory/2304-17-0x0000000000470000-0x0000000000485000-memory.dmp

Filesize
84KB

Download
memory/3240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-2-0x0000000000B00000-0x0000000000B13000-memory.dmp

Filesize
76KB

Download
memory/3240-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3240-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3240-9-0x0000000000B00000-0x0000000000B13000-memory.dmp

Filesize
76KB

Download
memory/3240-1-0x0000000000BE0000-0x0000000000CE0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads