tofsee | 2932d1375f7ce5136745afb5dc14e6e5f152f56a88d558642da0477210295de6

General

Target

081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe
Size

12.6MB
MD5

081853711fac25c9e4e9dd1f53904ea6
SHA1

a9eaf8ac58ecf48212c41c2a20ed685f672af073
SHA256

2932d1375f7ce5136745afb5dc14e6e5f152f56a88d558642da0477210295de6
SHA512

ef3cb984af18928a2fd693d9f81b4c20b4e0287b20a02bfec90d2a701b7686b067f030f2e6b7e0b072028554f7bcd4ee9c9f54d46014d84486ea55a265461874
SSDEEP

6144:bO+iHJftwWCUT4sKKjAtqfXSg/dcjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjX:bO+iHJuWCcxpfXJd

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
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

Processes:

netsh.exe

pid process

3476 netsh.exe

pid	process
3476	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\uvqvaxzl\ImagePath = "C:\\Windows\\SysWOW64\\uvqvaxzl\\nuxvwwma.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

Processes:

081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1224 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nuxvwwma.exe

pid process

4496 nuxvwwma.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nuxvwwma.exe

description pid process target process

PID 4496 set thread context of 1224 4496 nuxvwwma.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2512 sc.exe
2708 sc.exe
3260 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1224	svchost.exe

pid	process
4496	nuxvwwma.exe

description	pid	process	target process
PID 4496 set thread context of 1224	4496	nuxvwwma.exe	svchost.exe

pid	process
2512	sc.exe
2708	sc.exe
3260	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4052 3168 WerFault.exe 081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe
4752 4496 WerFault.exe nuxvwwma.exe

pid	pid_target	process	target process
4052	3168	WerFault.exe	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe
4752	4496	WerFault.exe	nuxvwwma.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

Processes:

cmd.exesc.exe081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.execmd.exesc.exesc.exenetsh.exenuxvwwma.exesvchost.exe

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	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nuxvwwma.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exenuxvwwma.exe

description	pid	process	target process
PID 3168 wrote to memory of 4532	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 4532	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 4532	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 1748	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 1748	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 1748	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	cmd.exe
PID 3168 wrote to memory of 2512	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 2512	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 2512	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 2708	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 2708	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 2708	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 3260	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 3260	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 3260	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	sc.exe
PID 3168 wrote to memory of 3476	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	netsh.exe
PID 3168 wrote to memory of 3476	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	netsh.exe
PID 3168 wrote to memory of 3476	3168	081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe	netsh.exe
PID 4496 wrote to memory of 1224	4496	nuxvwwma.exe	svchost.exe
PID 4496 wrote to memory of 1224	4496	nuxvwwma.exe	svchost.exe
PID 4496 wrote to memory of 1224	4496	nuxvwwma.exe	svchost.exe
PID 4496 wrote to memory of 1224	4496	nuxvwwma.exe	svchost.exe
PID 4496 wrote to memory of 1224	4496	nuxvwwma.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uvqvaxzl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nuxvwwma.exe" C:\Windows\SysWOW64\uvqvaxzl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uvqvaxzl binPath= "C:\Windows\SysWOW64\uvqvaxzl\nuxvwwma.exe /d\"C:\Users\Admin\AppData\Local\Temp\081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uvqvaxzl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uvqvaxzl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3260
- 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:3476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 1040
  2⤵
  - Program crash
  PID:4052

C:\Windows\SysWOW64\uvqvaxzl\nuxvwwma.exe
C:\Windows\SysWOW64\uvqvaxzl\nuxvwwma.exe /d"C:\Users\Admin\AppData\Local\Temp\081853711fac25c9e4e9dd1f53904ea6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 512
  2⤵
  - Program crash
  PID:4752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3168 -ip 3168
1⤵
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4496 -ip 4496
1⤵
PID:4044

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\nuxvwwma.exe

Filesize
10.4MB

MD5
73b2d5bfdc1d35c8660037d3b621d7b1

SHA1
df177e22f214f2a494444227ef272b223034d659

SHA256
debbcc74ee6c7c10fbebc704a0ef9c9e39eed6f19319241b5d4bdaf532f78af7

SHA512
46c638f9cef063f63b729f9ee80365ba86af546c93de824b3f59805953ebbf5bf5aa78047adfd431b48cb49e9bf21515c2f8579a82f32ce6c5cc7ed576343e0b

Download Submit
memory/1224-12-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/1224-17-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/1224-14-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/3168-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/3168-9-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/3168-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Filesize
1024KB

Download
memory/3168-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-2-0x00000000008E0000-0x00000000008F3000-memory.dmp

Filesize
76KB

Download
memory/4496-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4496-15-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4496-16-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads