tofsee | 17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899

General

Target

JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe
Size

159KB
MD5

7272673adb381a42bf168133972442a5
SHA1

d6eaf59359ea2d1bb61877d077c9f9c97422759c
SHA256

17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899
SHA512

72eee2da5918a2fe52dc72f9a76730379c2fc85d0694ad25efadc588dd7b64f3e7ba8229cd9e78ecfadf5d331a274409b370399afe135aa2d3bf469faf40d6d5
SSDEEP

3072:IK7tyStkBJQXJAkcFjwNMhKNa7hHXSdmrFgotXEwKHbKOOlLlm:IWtkBJQXBco7+INaUHb8l

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
4476	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\dxfmfde\ImagePath = "C:\\Windows\\SysWOW64\\dxfmfde\\dstzmxrq.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	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe

Deletes itself 1 IoCs

pid	Process
3212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1360	dstzmxrq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1360 set thread context of 3212	1360	dstzmxrq.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3116	sc.exe
4280	sc.exe
1520	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
1812	1704	WerFault.exe	81
1840	1360	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dstzmxrq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.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	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1648	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	82
PID 1704 wrote to memory of 1648	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	82
PID 1704 wrote to memory of 1648	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	82
PID 1704 wrote to memory of 2996	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	84
PID 1704 wrote to memory of 2996	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	84
PID 1704 wrote to memory of 2996	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	84
PID 1704 wrote to memory of 3116	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	86
PID 1704 wrote to memory of 3116	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	86
PID 1704 wrote to memory of 3116	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	86
PID 1704 wrote to memory of 4280	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	88
PID 1704 wrote to memory of 4280	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	88
PID 1704 wrote to memory of 4280	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	88
PID 1704 wrote to memory of 1520	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	90
PID 1704 wrote to memory of 1520	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	90
PID 1704 wrote to memory of 1520	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	90
PID 1360 wrote to memory of 3212	1360	dstzmxrq.exe	93
PID 1360 wrote to memory of 3212	1360	dstzmxrq.exe	93
PID 1360 wrote to memory of 3212	1360	dstzmxrq.exe	93
PID 1360 wrote to memory of 3212	1360	dstzmxrq.exe	93
PID 1360 wrote to memory of 3212	1360	dstzmxrq.exe	93
PID 1704 wrote to memory of 4476	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	96
PID 1704 wrote to memory of 4476	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	96
PID 1704 wrote to memory of 4476	1704	JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dxfmfde\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dstzmxrq.exe" C:\Windows\SysWOW64\dxfmfde\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dxfmfde binPath= "C:\Windows\SysWOW64\dxfmfde\dstzmxrq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dxfmfde "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dxfmfde
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1520
- 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:4476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1704 -s 1252
  2⤵
  - Program crash
  PID:1812

C:\Windows\SysWOW64\dxfmfde\dstzmxrq.exe
C:\Windows\SysWOW64\dxfmfde\dstzmxrq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_17687f6b5a69cbaa84309f9ced25b3731c9fd6f4704abf9291877e6c5e57e899.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 516
  2⤵
  - Program crash
  PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1360 -ip 1360
1⤵
PID:3524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1704 -ip 1704
1⤵
PID:3232

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\dstzmxrq.exe

Filesize
14.9MB

MD5
b643f43af3dceb379f4abbaba16df0a1

SHA1
1c23a7f29a67fdb9bf5bfdea59affad3bae3c506

SHA256
4fe03cc735043cda7f3b94b128dd79496525524d22e0e359ac2bff88bc98191b

SHA512
174c3e491e8ad044d4566f28c571b75ec697a351ce9c6c06f2a4dff3f790f96ca3cc2df37ae16ba13931ef1c5ccfa17d5192e6ec7ffb189e33789c7c0cd66faa

Download Submit
memory/1360-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1360-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1360-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1360-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1704-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1704-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1704-1-0x0000000002180000-0x0000000002193000-memory.dmp

Filesize
76KB

Download
memory/1704-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1704-17-0x0000000002180000-0x0000000002193000-memory.dmp

Filesize
76KB

Download
memory/1704-0-0x0000000002170000-0x000000000217D000-memory.dmp

Filesize
52KB

Download
memory/1704-16-0x0000000002170000-0x000000000217D000-memory.dmp

Filesize
52KB

Download
memory/3212-9-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3212-12-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3212-19-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3212-20-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download
memory/3212-21-0x00000000012D0000-0x00000000012E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads