tofsee | 0db0927dc26a7978d8dda57e51d7f547d5501beac40e671a984e69ef11062f2e

General

Target

JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe
Size

11.9MB
MD5

6fa88846f033e59880c1ede4af437594
SHA1

6b691617a322a5827217b85859bfb6734cba5569
SHA256

0db0927dc26a7978d8dda57e51d7f547d5501beac40e671a984e69ef11062f2e
SHA512

28a99c567078022d3d449973a1c38d8fa2366704c26281200fa52027c59cd049a700b56d82bf45b4a311295d497103075b9b453879a4a3322af76f1a2a676970
SSDEEP

98304:MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEn:

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
4940	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\dzxerrnt\ImagePath = "C:\\Windows\\SysWOW64\\dzxerrnt\\getfzvgw.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe

Deletes itself 1 IoCs

pid	Process
3940	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3640	getfzvgw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3640 set thread context of 3940	3640	getfzvgw.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4428	sc.exe
4920	sc.exe
2156	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
5100	2220	WerFault.exe	82
3136	3640	WerFault.exe	94

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6fa88846f033e59880c1ede4af437594.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	netsh.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	getfzvgw.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 3420	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	83
PID 2220 wrote to memory of 3420	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	83
PID 2220 wrote to memory of 3420	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	83
PID 2220 wrote to memory of 1600	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	86
PID 2220 wrote to memory of 1600	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	86
PID 2220 wrote to memory of 1600	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	86
PID 2220 wrote to memory of 4920	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	88
PID 2220 wrote to memory of 4920	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	88
PID 2220 wrote to memory of 4920	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	88
PID 2220 wrote to memory of 2156	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	90
PID 2220 wrote to memory of 2156	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	90
PID 2220 wrote to memory of 2156	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	90
PID 2220 wrote to memory of 4428	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	92
PID 2220 wrote to memory of 4428	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	92
PID 2220 wrote to memory of 4428	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	92
PID 2220 wrote to memory of 4940	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	95
PID 2220 wrote to memory of 4940	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	95
PID 2220 wrote to memory of 4940	2220	JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe	95
PID 3640 wrote to memory of 3940	3640	getfzvgw.exe	101
PID 3640 wrote to memory of 3940	3640	getfzvgw.exe	101
PID 3640 wrote to memory of 3940	3640	getfzvgw.exe	101
PID 3640 wrote to memory of 3940	3640	getfzvgw.exe	101
PID 3640 wrote to memory of 3940	3640	getfzvgw.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dzxerrnt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\getfzvgw.exe" C:\Windows\SysWOW64\dzxerrnt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dzxerrnt binPath= "C:\Windows\SysWOW64\dzxerrnt\getfzvgw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dzxerrnt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dzxerrnt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4428
- 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:4940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 660
  2⤵
  - Program crash
  PID:5100

C:\Windows\SysWOW64\dzxerrnt\getfzvgw.exe
C:\Windows\SysWOW64\dzxerrnt\getfzvgw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6fa88846f033e59880c1ede4af437594.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3640 -s 516
  2⤵
  - Program crash
  PID:3136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2220 -ip 2220
1⤵
PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3640 -ip 3640
1⤵
PID:2536

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\getfzvgw.exe

Filesize
10.6MB

MD5
758a93b406f8a380249c54a0407a29d6

SHA1
3fc4ed81c4371baca831bf1c855cc4efdeb7306f

SHA256
2752834fa97c2f1d38cfd81a1178079d6bb02f54d94087ef08347080a20ab274

SHA512
eeef30230929d9954cc33f7205d282722a5460c64eb725d9f0d974e2449241b479cb85e3518c1ae2fff29f154fac673bc38f8a6e67ca803d69346fe9b02f9e4a

Download Submit
memory/2220-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2220-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2220-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2220-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2220-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2220-1-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/3640-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3640-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3640-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3640-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/3940-14-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/3940-16-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/3940-17-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads