tofsee | 3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc

General

Target

JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe
Size

284KB
MD5

52cd68a1d3f07bc8244da2ad26d4b0e0
SHA1

5d5e8d9a50e0041c93a8f78c83a458efeae28b1c
SHA256

3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc
SHA512

99dc2024a47425a90dae24728bc3e11e4bd3809997cd00020419036559c80b7214384b0243233516fae2ef69bdf41a72c346f3d061740b7dbf2536fe19f147c4
SSDEEP

3072:+u4V4SIVHGyIfEjIO1/s3Rd0qJVBF9S20kew9SyZ/3JWwhGmt/pyROVczwRjH/So:T4VjcAfEz1/sBdJdv7WYZtByggwRr

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
3076	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\lsokvxgd\ImagePath = "C:\\Windows\\SysWOW64\\lsokvxgd\\fvvvkbhz.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe

Deletes itself 1 IoCs

pid	Process
464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4956	fvvvkbhz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4956 set thread context of 464	4956	fvvvkbhz.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
616	sc.exe
2912	sc.exe
2492	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
4532	2780	WerFault.exe	82
4112	4956	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fvvvkbhz.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 1056	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	83
PID 2780 wrote to memory of 1056	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	83
PID 2780 wrote to memory of 1056	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	83
PID 2780 wrote to memory of 4592	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	85
PID 2780 wrote to memory of 4592	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	85
PID 2780 wrote to memory of 4592	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	85
PID 2780 wrote to memory of 616	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	87
PID 2780 wrote to memory of 616	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	87
PID 2780 wrote to memory of 616	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	87
PID 2780 wrote to memory of 2912	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	89
PID 2780 wrote to memory of 2912	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	89
PID 2780 wrote to memory of 2912	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	89
PID 2780 wrote to memory of 2492	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	91
PID 2780 wrote to memory of 2492	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	91
PID 2780 wrote to memory of 2492	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	91
PID 2780 wrote to memory of 3076	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	94
PID 2780 wrote to memory of 3076	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	94
PID 2780 wrote to memory of 3076	2780	JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe	94
PID 4956 wrote to memory of 464	4956	fvvvkbhz.exe	100
PID 4956 wrote to memory of 464	4956	fvvvkbhz.exe	100
PID 4956 wrote to memory of 464	4956	fvvvkbhz.exe	100
PID 4956 wrote to memory of 464	4956	fvvvkbhz.exe	100
PID 4956 wrote to memory of 464	4956	fvvvkbhz.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lsokvxgd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fvvvkbhz.exe" C:\Windows\SysWOW64\lsokvxgd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lsokvxgd binPath= "C:\Windows\SysWOW64\lsokvxgd\fvvvkbhz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lsokvxgd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lsokvxgd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2492
- 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:3076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2780 -s 1252
  2⤵
  - Program crash
  PID:4532

C:\Windows\SysWOW64\lsokvxgd\fvvvkbhz.exe
C:\Windows\SysWOW64\lsokvxgd\fvvvkbhz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3d7c6df1f597bfcda40600bba0284503e1c73e11f0a20a762d3d1d667f24fdcc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 532
  2⤵
  - Program crash
  PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2780 -ip 2780
1⤵
PID:1876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4956 -ip 4956
1⤵
PID:2992

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\fvvvkbhz.exe

Filesize
11.8MB

MD5
ec70da66eaa9d7e33d33b578cddb21b4

SHA1
500d25a4d2348de3fa55ddcf38bf3a7d4568931e

SHA256
9f07c8c0e41c5f746330e03ffc3697150bf68414b15bb4a29047c195340f65de

SHA512
38330de7298842940cb31dd26bedc781da6d83d0dc8d78ecbc926344efd291cff5e2abcbc3c794a235ea1a712dba82573353483d7bd9237fc5ec093837231a65

Download Submit
memory/464-11-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/464-13-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/464-14-0x0000000001220000-0x0000000001235000-memory.dmp

Filesize
84KB

Download
memory/2780-1-0x0000000002E40000-0x0000000002F40000-memory.dmp

Filesize
1024KB

Download
memory/2780-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2780-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2780-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2780-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2780-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/4956-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads