tofsee | d1b6ff4842c5e9ed4c82f2cc8abb8c449896dd3316be09c2ad8a8e64418480d0

General

Target

87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe
Size

14.6MB
MD5

87f88fbd6fc1edef8d83bfaaee8f53fe
SHA1

27509f29c2b3b490cf2a7322f7f2cd828806c88f
SHA256

d1b6ff4842c5e9ed4c82f2cc8abb8c449896dd3316be09c2ad8a8e64418480d0
SHA512

08edb0c2a5be848dcca234d3f5f2df9c7ff85b54e2ec7a2ba9ed43dd0b7e7e00ad7b06eaba3b34253ef6c852596f1dbca9aaca3d5a5029585748a094a6bc9c72
SSDEEP

12288:eZlC6v/5oQU6buXH53333333333333333333333333333333333333333333333H:ebjvluXH

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
1480	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\ukvwcbns\ImagePath = "C:\\Windows\\SysWOW64\\ukvwcbns\\mpiqoqyi.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1896	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	mpiqoqyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 1896	2172	mpiqoqyi.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
4548	sc.exe
2656	sc.exe
4580	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
3476	3852	WerFault.exe	83
4120	2172	WerFault.exe	101

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	sc.exe
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	87f88fbd6fc1edef8d83bfaaee8f53fe_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	mpiqoqyi.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 3032	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	87
PID 3852 wrote to memory of 3032	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	87
PID 3852 wrote to memory of 3032	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	87
PID 3852 wrote to memory of 4684	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	89
PID 3852 wrote to memory of 4684	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	89
PID 3852 wrote to memory of 4684	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	89
PID 3852 wrote to memory of 2656	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	92
PID 3852 wrote to memory of 2656	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	92
PID 3852 wrote to memory of 2656	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	92
PID 3852 wrote to memory of 4580	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	96
PID 3852 wrote to memory of 4580	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	96
PID 3852 wrote to memory of 4580	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	96
PID 3852 wrote to memory of 4548	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	98
PID 3852 wrote to memory of 4548	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	98
PID 3852 wrote to memory of 4548	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	98
PID 3852 wrote to memory of 1480	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	102
PID 3852 wrote to memory of 1480	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	102
PID 3852 wrote to memory of 1480	3852	87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe	102
PID 2172 wrote to memory of 1896	2172	mpiqoqyi.exe	108
PID 2172 wrote to memory of 1896	2172	mpiqoqyi.exe	108
PID 2172 wrote to memory of 1896	2172	mpiqoqyi.exe	108
PID 2172 wrote to memory of 1896	2172	mpiqoqyi.exe	108
PID 2172 wrote to memory of 1896	2172	mpiqoqyi.exe	108

C:\Users\Admin\AppData\Local\Temp\87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ukvwcbns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe" C:\Windows\SysWOW64\ukvwcbns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ukvwcbns binPath= "C:\Windows\SysWOW64\ukvwcbns\mpiqoqyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ukvwcbns "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ukvwcbns
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4548
- 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:1480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 648
  2⤵
  - Program crash
  PID:3476

C:\Windows\SysWOW64\ukvwcbns\mpiqoqyi.exe
C:\Windows\SysWOW64\ukvwcbns\mpiqoqyi.exe /d"C:\Users\Admin\AppData\Local\Temp\87f88fbd6fc1edef8d83bfaaee8f53fe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 560
  2⤵
  - Program crash
  PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3852 -ip 3852
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2172 -ip 2172
1⤵
PID:4824

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe

Filesize
12.9MB

MD5
b8ca87803c4528e953948ea8e5aa1783

SHA1
1257a171632a565c7b32d0e79c75633838e16871

SHA256
703e4f8028d1020bf059446badad973988e4a63ab62d2d17a3db069e3219d42b

SHA512
1c0cd101e5ea1390f267850b3fff277e1bbd92248427b550ef7a3d8fd6bca1fa9ea389a7907179ba96932ae8d95e82d3754ec3c4e62683e374a6b326b95df1dc

Download Submit
memory/1896-14-0x0000000000C60000-0x0000000000C75000-memory.dmp

Filesize
84KB

Download
memory/1896-17-0x0000000000C60000-0x0000000000C75000-memory.dmp

Filesize
84KB

Download
memory/1896-16-0x0000000000C60000-0x0000000000C75000-memory.dmp

Filesize
84KB

Download
memory/2172-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2172-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2172-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2172-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3852-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3852-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3852-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/3852-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3852-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3852-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads