tofsee | 30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c

General

Target

JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe
Size

164KB
MD5

2bb1fbbbed9cc4fadfa75a080379f3fb
SHA1

32c784d175b2c892686d79ef500b3d6a7e286dc9
SHA256

30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c
SHA512

35a409fe79641ad6deeab7176785fb0db9393250fb20f971de0e8ece15dbf20bb36e5593a4b9da0ca1c6c893193aa1a0f160f40c27205dbbbe4dc8bd77d3f409
SSDEEP

3072:nhqXElKGK4Pm2B32eXAH57V3OUQuhS9H6S:ns0l9NXXK7hEa

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
3996	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\cvmxibox\ImagePath = "C:\\Windows\\SysWOW64\\cvmxibox\\szcabbrf.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_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe

Deletes itself 1 IoCs

pid	Process
452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4340	szcabbrf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4340 set thread context of 452	4340	szcabbrf.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3256	sc.exe
4516	sc.exe
2664	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
4564	3896	WerFault.exe	82
2848	4340	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	szcabbrf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 4116	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	83
PID 3896 wrote to memory of 4116	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	83
PID 3896 wrote to memory of 4116	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	83
PID 3896 wrote to memory of 3968	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	85
PID 3896 wrote to memory of 3968	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	85
PID 3896 wrote to memory of 3968	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	85
PID 3896 wrote to memory of 3256	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	87
PID 3896 wrote to memory of 3256	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	87
PID 3896 wrote to memory of 3256	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	87
PID 3896 wrote to memory of 4516	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	90
PID 3896 wrote to memory of 4516	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	90
PID 3896 wrote to memory of 4516	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	90
PID 3896 wrote to memory of 2664	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	92
PID 3896 wrote to memory of 2664	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	92
PID 3896 wrote to memory of 2664	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	92
PID 3896 wrote to memory of 3996	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	95
PID 3896 wrote to memory of 3996	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	95
PID 3896 wrote to memory of 3996	3896	JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe	95
PID 4340 wrote to memory of 452	4340	szcabbrf.exe	101
PID 4340 wrote to memory of 452	4340	szcabbrf.exe	101
PID 4340 wrote to memory of 452	4340	szcabbrf.exe	101
PID 4340 wrote to memory of 452	4340	szcabbrf.exe	101
PID 4340 wrote to memory of 452	4340	szcabbrf.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cvmxibox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\szcabbrf.exe" C:\Windows\SysWOW64\cvmxibox\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cvmxibox binPath= "C:\Windows\SysWOW64\cvmxibox\szcabbrf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cvmxibox "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cvmxibox
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- 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:3996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 1036
  2⤵
  - Program crash
  PID:4564

C:\Windows\SysWOW64\cvmxibox\szcabbrf.exe
C:\Windows\SysWOW64\cvmxibox\szcabbrf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_30f34e11d0cc3ea3aaa86bf43fcc1f93d3bd0b7bfb101b6c4b4180217261874c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 512
  2⤵
  - Program crash
  PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3896 -ip 3896
1⤵
PID:2704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4340 -ip 4340
1⤵
PID:1892

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\szcabbrf.exe

Filesize
11.7MB

MD5
f61fa5de381d7646280e5e0145390e7b

SHA1
cdea751f9d576076e256eac06ef3f05917938c6e

SHA256
c9b4855b20e900b561c9fb4d967048040792d3f5bfaeedfcc6c3e33690a09583

SHA512
634322060dacb2c5bd47c8414f61b45567c8d9c1f0c2834ef00492424d800952f301298fde97f1e40c689c078b18a8012ef77467f06100f8b0e92dd5e8b3f12f

Download Submit
memory/452-14-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/452-17-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/452-16-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/3896-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/3896-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3896-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/3896-8-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/3896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3896-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4340-11-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4340-12-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4340-13-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4340-19-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads