tofsee | 8a02b485f82fcf55b775350e77c3fc0a1d1bdc514e984342e5da21998c373ae5

General

Target

JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe
Size

14.9MB
MD5

40b4f77308772ba74d7e44905d9d0802
SHA1

3298eca6413ecb835ebc4b2883aa5a117fa0fb45
SHA256

8a02b485f82fcf55b775350e77c3fc0a1d1bdc514e984342e5da21998c373ae5
SHA512

dc38793f92936c5aabeadbdb63dc4c1019bb1f0c4af51940a986d7c986349ee4429d3f6018efa5877a1adbd9ea068f3dbae2f480c89cc9fb7e5e3b9cff7ff259
SSDEEP

1536:3VZK1I9rn2BHELrWh9iuDdJm7CyY8rhGDNDxTWNdUhUFIq:bK1Mn2BHsrt4mYnrMdUh

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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
4944	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\fsvrgpvs\ImagePath = "C:\\Windows\\SysWOW64\\fsvrgpvs\\izsvcpba.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe

Deletes itself 1 IoCs

pid	Process
2312	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3016	izsvcpba.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3016 set thread context of 2312	3016	izsvcpba.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
4284	sc.exe
1692	sc.exe
4016	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

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	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	izsvcpba.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 4976	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	84
PID 4836 wrote to memory of 4976	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	84
PID 4836 wrote to memory of 4976	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	84
PID 4836 wrote to memory of 4968	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	86
PID 4836 wrote to memory of 4968	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	86
PID 4836 wrote to memory of 4968	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	86
PID 4836 wrote to memory of 4016	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	88
PID 4836 wrote to memory of 4016	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	88
PID 4836 wrote to memory of 4016	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	88
PID 4836 wrote to memory of 4284	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	90
PID 4836 wrote to memory of 4284	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	90
PID 4836 wrote to memory of 4284	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	90
PID 4836 wrote to memory of 1692	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	92
PID 4836 wrote to memory of 1692	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	92
PID 4836 wrote to memory of 1692	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	92
PID 4836 wrote to memory of 4944	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	95
PID 4836 wrote to memory of 4944	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	95
PID 4836 wrote to memory of 4944	4836	JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe	95
PID 3016 wrote to memory of 2312	3016	izsvcpba.exe	97
PID 3016 wrote to memory of 2312	3016	izsvcpba.exe	97
PID 3016 wrote to memory of 2312	3016	izsvcpba.exe	97
PID 3016 wrote to memory of 2312	3016	izsvcpba.exe	97
PID 3016 wrote to memory of 2312	3016	izsvcpba.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fsvrgpvs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\izsvcpba.exe" C:\Windows\SysWOW64\fsvrgpvs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fsvrgpvs binPath= "C:\Windows\SysWOW64\fsvrgpvs\izsvcpba.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fsvrgpvs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fsvrgpvs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1692
- 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:4944

C:\Windows\SysWOW64\fsvrgpvs\izsvcpba.exe
C:\Windows\SysWOW64\fsvrgpvs\izsvcpba.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40b4f77308772ba74d7e44905d9d0802.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2312

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\izsvcpba.exe

Filesize
13.0MB

MD5
e762d1819c21c7b76de7bf9e959157a1

SHA1
e6f3be58ec2241d23407a9f7e00c8ae5b6272fe9

SHA256
bf470fe750b70d17c1187736d953ffa62ef7ff6cbd461e53bcf6668dd924909e

SHA512
ff04c599618c9658011cc0175c8e91df882f20c6fc9864192831a2d56ce7626cbd5f7f1ac3fa999d978575c046a80daacaf70d90dda12db75e59a48351d2583d

Download Submit
memory/2312-9-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/2312-12-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/2312-14-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/2312-15-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/2312-16-0x0000000000990000-0x00000000009A5000-memory.dmp

Filesize
84KB

Download
memory/3016-8-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/3016-13-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/4836-0-0x0000000002190000-0x0000000002191000-memory.dmp

Filesize
4KB

Download
memory/4836-1-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/4836-2-0x00000000021A0000-0x00000000021A1000-memory.dmp

Filesize
4KB

Download
memory/4836-6-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads