tofsee | 242b45857eeb58a9c9b74475a921f96eb152699e0b8f67d98c5e6553affbc789

General

Target

f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe
Size

13.6MB
MD5

f3615a826a17f76a936beb423b94465b
SHA1

2068b6d190eafc00f96a5a853cd2b457066942ae
SHA256

242b45857eeb58a9c9b74475a921f96eb152699e0b8f67d98c5e6553affbc789
SHA512

5d0e69efa747eaaabb629510006acadc5ac4ce3909e796bafffbf1d48ce08bae9ead3b1a7e5894e581ff9f3457b6b913ba11afd22dd74dfc1b6f0a324680c220
SSDEEP

196608:4ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff3:

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
5096	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\hyvytbqz\ImagePath = "C:\\Windows\\SysWOW64\\hyvytbqz\\vawompb.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	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1156	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	vawompb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 1156	4444	vawompb.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2788	sc.exe
4900	sc.exe
4048	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
100	1364	WerFault.exe	82
4812	4444	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vawompb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f3615a826a17f76a936beb423b94465b_JaffaCakes118.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 684	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	83
PID 1364 wrote to memory of 684	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	83
PID 1364 wrote to memory of 684	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	83
PID 1364 wrote to memory of 5068	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	85
PID 1364 wrote to memory of 5068	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	85
PID 1364 wrote to memory of 5068	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	85
PID 1364 wrote to memory of 2788	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	87
PID 1364 wrote to memory of 2788	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	87
PID 1364 wrote to memory of 2788	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	87
PID 1364 wrote to memory of 4900	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	89
PID 1364 wrote to memory of 4900	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	89
PID 1364 wrote to memory of 4900	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	89
PID 1364 wrote to memory of 4048	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	91
PID 1364 wrote to memory of 4048	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	91
PID 1364 wrote to memory of 4048	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	91
PID 1364 wrote to memory of 5096	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	94
PID 1364 wrote to memory of 5096	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	94
PID 1364 wrote to memory of 5096	1364	f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe	94
PID 4444 wrote to memory of 1156	4444	vawompb.exe	100
PID 4444 wrote to memory of 1156	4444	vawompb.exe	100
PID 4444 wrote to memory of 1156	4444	vawompb.exe	100
PID 4444 wrote to memory of 1156	4444	vawompb.exe	100
PID 4444 wrote to memory of 1156	4444	vawompb.exe	100

C:\Users\Admin\AppData\Local\Temp\f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hyvytbqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vawompb.exe" C:\Windows\SysWOW64\hyvytbqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hyvytbqz binPath= "C:\Windows\SysWOW64\hyvytbqz\vawompb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hyvytbqz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hyvytbqz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4048
- 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:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1364 -s 1240
  2⤵
  - Program crash
  PID:100

C:\Windows\SysWOW64\hyvytbqz\vawompb.exe
C:\Windows\SysWOW64\hyvytbqz\vawompb.exe /d"C:\Users\Admin\AppData\Local\Temp\f3615a826a17f76a936beb423b94465b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4444 -s 560
  2⤵
  - Program crash
  PID:4812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1364 -ip 1364
1⤵
PID:2444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4444 -ip 4444
1⤵
PID:3172

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\vawompb.exe

Filesize
14.7MB

MD5
7af3021135b1d264e1370829493f4b2f

SHA1
679030b9d33154e251acc233efc6e2ca33e3706b

SHA256
0603161b366721cc184c2743de05f622d3a774595fa66f4333113b390d192283

SHA512
fb09d98d6cdaaef543af476db917e27a73ddbd030cef1d8bb50519b2640443b1ac7c2b06568e919bde58c728d711e0005724aa543ed6c4b32b0dc1bb83660ee6

Download Submit
memory/1156-14-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/1156-17-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/1156-16-0x00000000006B0000-0x00000000006C5000-memory.dmp

Filesize
84KB

Download
memory/1364-9-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/1364-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1364-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/1364-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1364-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4444-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4444-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4444-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4444-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads