tofsee | 97d23550ec191ff048c89ae23e9ef5ae009ff65d79e2f286029ac90331bc90ba

General

Target

JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe
Size

281KB
MD5

3a9ef0bc05952c74715b6585f97c41f6
SHA1

877fa1694843c5bf3f5124e8b17ead26bc211c13
SHA256

97d23550ec191ff048c89ae23e9ef5ae009ff65d79e2f286029ac90331bc90ba
SHA512

2d67f3d29359ff2cdd058f6526e22604cf69f7126f09a0006fa8a34a90db0ac6d895cd78b5e570789d79584101add9e5ac732473d7e4cca5a9b8fee2262c2034
SSDEEP

6144:YTCpFumdDpw7jmzwdJ+nY6eYqX7tNfVXVHQLIiu8cfo0/pW:YTkFugpn2UxwZGEX8cA0/M

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
3456	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\ggmuwxlt\ImagePath = "C:\\Windows\\SysWOW64\\ggmuwxlt\\bupbfuf.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	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe

Deletes itself 1 IoCs

pid	Process
3944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3916	bupbfuf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3916 set thread context of 3944	3916	bupbfuf.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1920	sc.exe
4916	sc.exe
3556	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
100	1088	WerFault.exe	81
228	3916	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	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bupbfuf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 968	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	82
PID 1088 wrote to memory of 968	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	82
PID 1088 wrote to memory of 968	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	82
PID 1088 wrote to memory of 2916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	84
PID 1088 wrote to memory of 2916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	84
PID 1088 wrote to memory of 2916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	84
PID 1088 wrote to memory of 1920	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	86
PID 1088 wrote to memory of 1920	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	86
PID 1088 wrote to memory of 1920	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	86
PID 1088 wrote to memory of 4916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	88
PID 1088 wrote to memory of 4916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	88
PID 1088 wrote to memory of 4916	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	88
PID 1088 wrote to memory of 3556	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	90
PID 1088 wrote to memory of 3556	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	90
PID 1088 wrote to memory of 3556	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	90
PID 1088 wrote to memory of 3456	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	93
PID 1088 wrote to memory of 3456	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	93
PID 1088 wrote to memory of 3456	1088	JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe	93
PID 3916 wrote to memory of 3944	3916	bupbfuf.exe	98
PID 3916 wrote to memory of 3944	3916	bupbfuf.exe	98
PID 3916 wrote to memory of 3944	3916	bupbfuf.exe	98
PID 3916 wrote to memory of 3944	3916	bupbfuf.exe	98
PID 3916 wrote to memory of 3944	3916	bupbfuf.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ggmuwxlt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bupbfuf.exe" C:\Windows\SysWOW64\ggmuwxlt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ggmuwxlt binPath= "C:\Windows\SysWOW64\ggmuwxlt\bupbfuf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ggmuwxlt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ggmuwxlt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3556
- 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:3456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 1040
  2⤵
  - Program crash
  PID:100

C:\Windows\SysWOW64\ggmuwxlt\bupbfuf.exe
C:\Windows\SysWOW64\ggmuwxlt\bupbfuf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3a9ef0bc05952c74715b6585f97c41f6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 564
  2⤵
  - Program crash
  PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1088 -ip 1088
1⤵
PID:3992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3916 -ip 3916
1⤵
PID:1868

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\bupbfuf.exe

Filesize
10.1MB

MD5
640659fe0f97f2755bedbf6a29b085bd

SHA1
b96c4acdc97410b6b4502a858fe6f2e548d77b56

SHA256
1b3785e00667e23e40c917d4cb9b174dd74b6848483adee4e6f321e98e708a85

SHA512
e79803e5888e986542fa38812a20f02c066a6ac9fdd39a8d2637aec157924150e3cd22599f95ea0ba3dc80a9b55d474c5d392126c625781260f35ecc9a163e5b

Download Submit
memory/1088-1-0x00000000030F0000-0x00000000031F0000-memory.dmp

Filesize
1024KB

Download
memory/1088-2-0x0000000003070000-0x0000000003083000-memory.dmp

Filesize
76KB

Download
memory/1088-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1088-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1088-9-0x0000000003070000-0x0000000003083000-memory.dmp

Filesize
76KB

Download
memory/1088-8-0x0000000000400000-0x0000000002F10000-memory.dmp

Filesize
43.1MB

Download
memory/3916-15-0x0000000000400000-0x0000000002F10000-memory.dmp

Filesize
43.1MB

Download
memory/3944-11-0x0000000000320000-0x0000000000335000-memory.dmp

Filesize
84KB

Download
memory/3944-13-0x0000000000320000-0x0000000000335000-memory.dmp

Filesize
84KB

Download
memory/3944-14-0x0000000000320000-0x0000000000335000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads