tofsee | 8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d

General

Target

JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe
Size

146KB
MD5

c0cf86699b57c1a4e817c65f08a25f69
SHA1

727e999c5d2e9993a7bd1370b927dd45875ea1de
SHA256

8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d
SHA512

aa150c368aee29572b80a98adbb4a37cf6840584c1f33a46527cd86fd8801f9bd1597c7f82df59d25ee504fbd6dea58ae1c1d3c19a18587ea9d42069485c38d6
SSDEEP

3072:We68IejRUebctwq67oI2K9HJ96xBXE8qfPuml+n8z:We2eGebctwtoI2ggqf2ml+nu

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
1100	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\wxvrwppm\ImagePath = "C:\\Windows\\SysWOW64\\wxvrwppm\\ysoufphn.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe

Deletes itself 1 IoCs

pid	Process
1520	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	ysoufphn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4900 set thread context of 1520	4900	ysoufphn.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
232	sc.exe
556	sc.exe
3996	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ysoufphn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 2576	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	82
PID 4632 wrote to memory of 2576	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	82
PID 4632 wrote to memory of 2576	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	82
PID 4632 wrote to memory of 2732	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	84
PID 4632 wrote to memory of 2732	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	84
PID 4632 wrote to memory of 2732	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	84
PID 4632 wrote to memory of 232	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	86
PID 4632 wrote to memory of 232	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	86
PID 4632 wrote to memory of 232	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	86
PID 4632 wrote to memory of 556	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	88
PID 4632 wrote to memory of 556	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	88
PID 4632 wrote to memory of 556	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	88
PID 4632 wrote to memory of 3996	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	92
PID 4632 wrote to memory of 3996	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	92
PID 4632 wrote to memory of 3996	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	92
PID 4632 wrote to memory of 1100	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	95
PID 4632 wrote to memory of 1100	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	95
PID 4632 wrote to memory of 1100	4632	JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe	95
PID 4900 wrote to memory of 1520	4900	ysoufphn.exe	99
PID 4900 wrote to memory of 1520	4900	ysoufphn.exe	99
PID 4900 wrote to memory of 1520	4900	ysoufphn.exe	99
PID 4900 wrote to memory of 1520	4900	ysoufphn.exe	99
PID 4900 wrote to memory of 1520	4900	ysoufphn.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxvrwppm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ysoufphn.exe" C:\Windows\SysWOW64\wxvrwppm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wxvrwppm binPath= "C:\Windows\SysWOW64\wxvrwppm\ysoufphn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wxvrwppm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wxvrwppm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3996
- 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:1100

C:\Windows\SysWOW64\wxvrwppm\ysoufphn.exe
C:\Windows\SysWOW64\wxvrwppm\ysoufphn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8dfc923084eb00656602132b076cbde3910210b2fb85be30074b1539105c854d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1520

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\ysoufphn.exe

Filesize
11.9MB

MD5
90c6ae4f746a289038da36f4c9be5dc6

SHA1
2ccd6aa0ba5bdd8dacfda7ebd38323cc118bb4fc

SHA256
740b04cd0646a2d3e47adefb5ac33177246f698366389ca0dce76c5879ffad68

SHA512
194d777c946f69bca983b7253dd3c96fa52fc0af424e7bc3d0e1a651b62c359e58fc61337e045d53b942e3cec33072c8d6540f47489890264218778dbd22a856

Download Submit
memory/1520-16-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/1520-14-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/1520-18-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/4632-8-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/4632-9-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/4632-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/4632-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4632-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4632-2-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/4900-13-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/4900-12-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/4900-11-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download
memory/4900-17-0x0000000000400000-0x00000000004AB000-memory.dmp

Filesize
684KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads