tofsee | c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d

General

Target

JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe
Size

184KB
MD5

4bf56f09203f49ce62a8bde95370b5e8
SHA1

8c961cec6688e7ec733f21f85913aa72a6581759
SHA256

c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d
SHA512

d4ae50a9c80f8ccf334d3e4486d79242a38ad52dbc116d89e98f792f26a9f674b99b41116f9028171b6c9d6fbf138940b07c705db7137a2c3b7094b231aff396
SSDEEP

3072:mXmEokfyWlUit95FAOslzEk7sQMXhIbRPsCPZPw3ZWrIUphgC:mbokaWn9oVJESpMhIb5lPS4

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
632	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\sguivihg\ImagePath = "C:\\Windows\\SysWOW64\\sguivihg\\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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe

Deletes itself 1 IoCs

pid	Process
2404	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	vlllarxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 2404	2924	vlllarxp.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4160	sc.exe
2628	sc.exe
5112	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
4704	2236	WerFault.exe	82
656	2924	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	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	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	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vlllarxp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 512	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	83
PID 2236 wrote to memory of 512	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	83
PID 2236 wrote to memory of 512	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	83
PID 2236 wrote to memory of 1532	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	85
PID 2236 wrote to memory of 1532	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	85
PID 2236 wrote to memory of 1532	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	85
PID 2236 wrote to memory of 4160	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	87
PID 2236 wrote to memory of 4160	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	87
PID 2236 wrote to memory of 4160	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	87
PID 2236 wrote to memory of 2628	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	89
PID 2236 wrote to memory of 2628	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	89
PID 2236 wrote to memory of 2628	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	89
PID 2236 wrote to memory of 5112	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	91
PID 2236 wrote to memory of 5112	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	91
PID 2236 wrote to memory of 5112	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	91
PID 2236 wrote to memory of 632	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	94
PID 2236 wrote to memory of 632	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	94
PID 2236 wrote to memory of 632	2236	JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe	94
PID 2924 wrote to memory of 2404	2924	vlllarxp.exe	100
PID 2924 wrote to memory of 2404	2924	vlllarxp.exe	100
PID 2924 wrote to memory of 2404	2924	vlllarxp.exe	100
PID 2924 wrote to memory of 2404	2924	vlllarxp.exe	100
PID 2924 wrote to memory of 2404	2924	vlllarxp.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sguivihg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vlllarxp.exe" C:\Windows\SysWOW64\sguivihg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sguivihg binPath= "C:\Windows\SysWOW64\sguivihg\vlllarxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sguivihg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sguivihg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5112
- 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:632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 1224
  2⤵
  - Program crash
  PID:4704

C:\Windows\SysWOW64\sguivihg\vlllarxp.exe
C:\Windows\SysWOW64\sguivihg\vlllarxp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c11381c26c551893386bb1319dbd231e056120d76a9f19b31b2bdaafdd42889d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2924 -s 520
  2⤵
  - Program crash
  PID:656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2236 -ip 2236
1⤵
PID:3092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2924 -ip 2924
1⤵
PID:3096

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
11.1MB

MD5
1a05e6510740bdee50b3f385115b9bbb

SHA1
f5c6cfc275d5194e6e9d7e26235e78a1156ffae3

SHA256
c41aa7d4c8d6d1a57e752ad77c09b38830fb329e6de3bb95a323aab2dd6cb724

SHA512
b4e3020318fb4b1fba819789de6fcbefc595c0d4b5497cfc1eb9f9a81942d23f2523cfcc7edc0f8b05a854efadef7dfbab37a4b6139f1c2f8d0396ba9812a4c0

Download Submit
memory/2236-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2236-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2236-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2236-8-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2236-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2236-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2404-14-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2404-16-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2404-17-0x00000000001B0000-0x00000000001C5000-memory.dmp

Filesize
84KB

Download
memory/2924-11-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2924-12-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2924-13-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/2924-19-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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