tofsee | d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9

General

Target

JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe
Size

303KB
MD5

0d3070756e0365fc2a42bec1d0d14f5a
SHA1

889328133bdeb1003e62a7bae6357a030f5cf94b
SHA256

d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9
SHA512

095319434c2b746dd4c1884aeb1bf74198f49e28367a8e38148b2dbf1e84d17dc46929bbd6daec063b61b1b98faf7c4e8c40f572b7270fe22fe703c8f88242a6
SSDEEP

6144:iKpfugLkStGFJ0H8luL6MCOhxxFeTr/ekI:i2gStGFJ0HnL6+zxF6L

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
2824	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\cojvzwfv\ImagePath = "C:\\Windows\\SysWOW64\\cojvzwfv\\vlllarxp.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_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe

Deletes itself 1 IoCs

pid	Process
5056	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2244	vlllarxp.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\cojvzwfv\vlllarxp.exe	vlllarxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 5056	2244	vlllarxp.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2484	sc.exe
2880	sc.exe
3928	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 1 IoCs

pid	pid_target	Process	procid_target
1160	1260	WerFault.exe	81

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	svchost.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	vlllarxp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 1696	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	82
PID 1260 wrote to memory of 1696	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	82
PID 1260 wrote to memory of 1696	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	82
PID 1260 wrote to memory of 4628	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	84
PID 1260 wrote to memory of 4628	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	84
PID 1260 wrote to memory of 4628	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	84
PID 1260 wrote to memory of 2484	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	86
PID 1260 wrote to memory of 2484	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	86
PID 1260 wrote to memory of 2484	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	86
PID 1260 wrote to memory of 2880	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	88
PID 1260 wrote to memory of 2880	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	88
PID 1260 wrote to memory of 2880	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	88
PID 1260 wrote to memory of 3928	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	90
PID 1260 wrote to memory of 3928	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	90
PID 1260 wrote to memory of 3928	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	90
PID 1260 wrote to memory of 2824	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	93
PID 1260 wrote to memory of 2824	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	93
PID 1260 wrote to memory of 2824	1260	JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe	93
PID 2244 wrote to memory of 5056	2244	vlllarxp.exe	98
PID 2244 wrote to memory of 5056	2244	vlllarxp.exe	98
PID 2244 wrote to memory of 5056	2244	vlllarxp.exe	98
PID 2244 wrote to memory of 5056	2244	vlllarxp.exe	98
PID 2244 wrote to memory of 5056	2244	vlllarxp.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cojvzwfv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vlllarxp.exe" C:\Windows\SysWOW64\cojvzwfv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cojvzwfv binPath= "C:\Windows\SysWOW64\cojvzwfv\vlllarxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cojvzwfv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cojvzwfv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3928
- 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:2824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1260 -s 1220
  2⤵
  - Program crash
  PID:1160

C:\Windows\SysWOW64\cojvzwfv\vlllarxp.exe
C:\Windows\SysWOW64\cojvzwfv\vlllarxp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d00924d8ea14605dc1e18c129e91fbcdbab4176ba365ce61a4c3df91fd4926d9.exe"
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1260 -ip 1260
1⤵
PID:528

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\vlllarxp.exe

Filesize
10.9MB

MD5
c957317dc4474854a68a9d39cb61e9a1

SHA1
1d3e54dd197e255748e683420fec0a268a728895

SHA256
ed611102f05f28458834df82715c6dcb12e3c1ae5adbeee0296cec2116537e98

SHA512
10925a62eae17ea680c81ec182f33b1a8ac0745d9c21e1fbd3c423d5d0a7d4b52b8679ded2c14ec86b9ef65747dd28b1403ba7d90820fe418352a1d58b96be9b

Download Submit
memory/1260-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/1260-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1260-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/1260-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1260-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1260-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2244-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2244-11-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2244-13-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2244-16-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/5056-14-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/5056-18-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/5056-19-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads