tofsee | 94da4b758bbbfc4bf501f5232f16478b8c56a63e77f20090bf91a5c8c3821927

General

Target

JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe
Size

11.3MB
MD5

e4102e6bc13f395e41d56630933c5b7f
SHA1

0ed523c9ea7709add9343e7bbe007c67932488d5
SHA256

94da4b758bbbfc4bf501f5232f16478b8c56a63e77f20090bf91a5c8c3821927
SHA512

18df3f62bf992509f54f2a4acf702f513483f4104decb1b565339540932038d53e4796edcfb536bc7338665479e31cb57ca91840a4c79a5f467b288876740951
SSDEEP

49152:kUkssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssX:k

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
4380	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\tpilpdsr\ImagePath = "C:\\Windows\\SysWOW64\\tpilpdsr\\sezwdccq.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe

Deletes itself 1 IoCs

pid	Process
1988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3896	sezwdccq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3896 set thread context of 1988	3896	sezwdccq.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1220	sc.exe
5096	sc.exe
1632	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
3136	4772	WerFault.exe	84
3492	3896	WerFault.exe	96

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_e4102e6bc13f395e41d56630933c5b7f.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sezwdccq.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 3312	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	85
PID 4772 wrote to memory of 3312	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	85
PID 4772 wrote to memory of 3312	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	85
PID 4772 wrote to memory of 2140	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	87
PID 4772 wrote to memory of 2140	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	87
PID 4772 wrote to memory of 2140	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	87
PID 4772 wrote to memory of 1220	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	89
PID 4772 wrote to memory of 1220	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	89
PID 4772 wrote to memory of 1220	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	89
PID 4772 wrote to memory of 5096	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	91
PID 4772 wrote to memory of 5096	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	91
PID 4772 wrote to memory of 5096	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	91
PID 4772 wrote to memory of 1632	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	94
PID 4772 wrote to memory of 1632	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	94
PID 4772 wrote to memory of 1632	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	94
PID 4772 wrote to memory of 4380	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	97
PID 4772 wrote to memory of 4380	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	97
PID 4772 wrote to memory of 4380	4772	JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe	97
PID 3896 wrote to memory of 1988	3896	sezwdccq.exe	103
PID 3896 wrote to memory of 1988	3896	sezwdccq.exe	103
PID 3896 wrote to memory of 1988	3896	sezwdccq.exe	103
PID 3896 wrote to memory of 1988	3896	sezwdccq.exe	103
PID 3896 wrote to memory of 1988	3896	sezwdccq.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tpilpdsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sezwdccq.exe" C:\Windows\SysWOW64\tpilpdsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tpilpdsr binPath= "C:\Windows\SysWOW64\tpilpdsr\sezwdccq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tpilpdsr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tpilpdsr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1632
- 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:4380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1044
  2⤵
  - Program crash
  PID:3136

C:\Windows\SysWOW64\tpilpdsr\sezwdccq.exe
C:\Windows\SysWOW64\tpilpdsr\sezwdccq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e4102e6bc13f395e41d56630933c5b7f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 512
  2⤵
  - Program crash
  PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4772 -ip 4772
1⤵
PID:1240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3896 -ip 3896
1⤵
PID:3160

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\sezwdccq.exe

Filesize
12.2MB

MD5
55dea79dc73fbc1853fa4efc7a0cbad9

SHA1
061916fba80d1a4fce4fe9e2857ace51d5dbdd5f

SHA256
0cf1371448062e425dca5c369cadad526b6aff310238be5989bca6ae1f04501f

SHA512
f82d3a7f1f7ec66a917ec421470a0df7ba6cf380ea0b623dadca826f765f1983d5601e5bf08c98a1cdb45300f1bd27e457d92029536c3feee27f1fbfd4e2656c

Download Submit
memory/1988-15-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/1988-13-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/1988-16-0x0000000001020000-0x0000000001035000-memory.dmp

Filesize
84KB

Download
memory/3896-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3896-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3896-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-2-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/4772-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-9-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/4772-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4772-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads