tofsee | f7c6f0e23614caa687edfba30db9617ba7fb0c970a6c5da20869028f49ca8277

General

Target

JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe
Size

11.8MB
MD5

4cdc93147bb55ed9dac436b38de5a8fe
SHA1

6c46c60153d0383a10c215ac620f915e9d28779d
SHA256

f7c6f0e23614caa687edfba30db9617ba7fb0c970a6c5da20869028f49ca8277
SHA512

23b3fd888b1ed64cd9e4d317baffe0de88ada725299a4c3c234235e72c6e80c241fe9a12b3ec1d1dacfd06f3b025dafbdf7e17e9029a9c1611f2a74f67f7dec3
SSDEEP

196608:bXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:b

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\hilxjefy\ImagePath = "C:\\Windows\\SysWOW64\\hilxjefy\\dsfbnmfr.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe

Deletes itself 1 IoCs

pid	Process
2992	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2036	dsfbnmfr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2036 set thread context of 2992	2036	dsfbnmfr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
900	sc.exe
5056	sc.exe
2212	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4720	2384	WerFault.exe	82
2304	2036	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dsfbnmfr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 5064	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	83
PID 2384 wrote to memory of 5064	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	83
PID 2384 wrote to memory of 5064	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	83
PID 2384 wrote to memory of 3824	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	85
PID 2384 wrote to memory of 3824	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	85
PID 2384 wrote to memory of 3824	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	85
PID 2384 wrote to memory of 900	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	87
PID 2384 wrote to memory of 900	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	87
PID 2384 wrote to memory of 900	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	87
PID 2384 wrote to memory of 5056	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	89
PID 2384 wrote to memory of 5056	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	89
PID 2384 wrote to memory of 5056	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	89
PID 2384 wrote to memory of 2212	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	92
PID 2384 wrote to memory of 2212	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	92
PID 2384 wrote to memory of 2212	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	92
PID 2384 wrote to memory of 4940	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	95
PID 2384 wrote to memory of 4940	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	95
PID 2384 wrote to memory of 4940	2384	JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe	95
PID 2036 wrote to memory of 2992	2036	dsfbnmfr.exe	101
PID 2036 wrote to memory of 2992	2036	dsfbnmfr.exe	101
PID 2036 wrote to memory of 2992	2036	dsfbnmfr.exe	101
PID 2036 wrote to memory of 2992	2036	dsfbnmfr.exe	101
PID 2036 wrote to memory of 2992	2036	dsfbnmfr.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hilxjefy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dsfbnmfr.exe" C:\Windows\SysWOW64\hilxjefy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hilxjefy binPath= "C:\Windows\SysWOW64\hilxjefy\dsfbnmfr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hilxjefy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hilxjefy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2212
- 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 2384 -s 1040
  2⤵
  - Program crash
  PID:4720

C:\Windows\SysWOW64\hilxjefy\dsfbnmfr.exe
C:\Windows\SysWOW64\hilxjefy\dsfbnmfr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4cdc93147bb55ed9dac436b38de5a8fe.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 520
  2⤵
  - Program crash
  PID:2304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2384 -ip 2384
1⤵
PID:4428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2036 -ip 2036
1⤵
PID:700

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\dsfbnmfr.exe

Filesize
12.9MB

MD5
cf4850bad29ea5fd2f5eb95de91afd1a

SHA1
093f397954ab94d4be759ef2dc21aff75da2e59a

SHA256
0aaed838702962fef757fda94d20ce0f4ad9a689653893f448a0be20f4594cf5

SHA512
fd6e9a835e4dc8be82809fccb2ccf4e413ee556dcbc34ef704ab755f6cc14e0a5fc38b01c6ef13cf504aedcf97151346c358722fe8858fd4796401dbeb81c7e2

Download Submit
memory/2036-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2036-13-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2036-18-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2384-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2384-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2384-1-0x0000000000A90000-0x0000000000B90000-memory.dmp

Filesize
1024KB

Download
memory/2384-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2992-12-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2992-15-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2992-16-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads