tofsee | 7088b73392c72a88308e348907c034e92dd88dab5b61e5da21ecce88d0263def

Analysis

max time kernel
148s
max time network
156s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
18/12/2024, 20:38 UTC

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General

Target

fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe
Size

10.9MB
MD5

fd0860d3ec11ef7451e8db1b6d87573f
SHA1

a823015d683d6604ed49ec2ac13134fb6895d6ba
SHA256

7088b73392c72a88308e348907c034e92dd88dab5b61e5da21ecce88d0263def
SHA512

b7b677cc8fc1061bbe0bbf74d2231de0c9ceea96a4d620ee951759b9aa8a6155a08adae337c90dacd2da159947ce4a2ed42146bd322f19ea2b344b99ca8bfbc6
SSDEEP

24576:fMOfbSPNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN1:P

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\yymoimlx = "0"	svchost.exe

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
2688	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\yymoimlx\ImagePath = "C:\\Windows\\SysWOW64\\yymoimlx\\svtoipzj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1236	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2112	svtoipzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 1236	2112	svtoipzj.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2756	sc.exe
2708	sc.exe
2780	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svtoipzj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2860	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	30
PID 2776 wrote to memory of 2860	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	30
PID 2776 wrote to memory of 2860	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	30
PID 2776 wrote to memory of 2860	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	30
PID 2776 wrote to memory of 2364	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	32
PID 2776 wrote to memory of 2364	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	32
PID 2776 wrote to memory of 2364	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	32
PID 2776 wrote to memory of 2364	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	32
PID 2776 wrote to memory of 2756	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	34
PID 2776 wrote to memory of 2756	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	34
PID 2776 wrote to memory of 2756	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	34
PID 2776 wrote to memory of 2756	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	34
PID 2776 wrote to memory of 2708	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	36
PID 2776 wrote to memory of 2708	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	36
PID 2776 wrote to memory of 2708	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	36
PID 2776 wrote to memory of 2708	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	36
PID 2776 wrote to memory of 2780	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	38
PID 2776 wrote to memory of 2780	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	38
PID 2776 wrote to memory of 2780	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	38
PID 2776 wrote to memory of 2780	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	38
PID 2776 wrote to memory of 2688	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	40
PID 2776 wrote to memory of 2688	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	40
PID 2776 wrote to memory of 2688	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	40
PID 2776 wrote to memory of 2688	2776	fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe	40
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43
PID 2112 wrote to memory of 1236	2112	svtoipzj.exe	43

C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yymoimlx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\svtoipzj.exe" C:\Windows\SysWOW64\yymoimlx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yymoimlx binPath= "C:\Windows\SysWOW64\yymoimlx\svtoipzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yymoimlx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yymoimlx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- 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:2688

C:\Windows\SysWOW64\yymoimlx\svtoipzj.exe
C:\Windows\SysWOW64\yymoimlx\svtoipzj.exe /d"C:\Users\Admin\AppData\Local\Temp\fd0860d3ec11ef7451e8db1b6d87573f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1236

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.76.201.171

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.70.246.20

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.231.239.246
DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A
DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN MX

Response

microsoft.com

IN MX

microsoft-commail protectionoutlook�
DNS

microsoft-com.mail.protection.outlook.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft-com.mail.protection.outlook.com

IN A

Response

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.40.26
DNS

defeatwax.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

defeatwax.ru

IN A

Response
DNS

yahoo.com

svchost.exe

Remote address:

8.8.8.8:53

Request

yahoo.com

IN MX

Response

yahoo.com

IN MX

mta5am0yahoodnsnet

yahoo.com

IN MX

mta6�.

yahoo.com

IN MX

mta7�.
DNS

mta5.am0.yahoodns.net

svchost.exe

Remote address:

8.8.8.8:53

Request

mta5.am0.yahoodns.net

IN A

Response

mta5.am0.yahoodns.net

IN A

67.195.204.79

mta5.am0.yahoodns.net

IN A

67.195.228.110

mta5.am0.yahoodns.net

IN A

67.195.204.77

mta5.am0.yahoodns.net

IN A

98.136.96.77

mta5.am0.yahoodns.net

IN A

67.195.228.106

mta5.am0.yahoodns.net

IN A

98.136.96.74

mta5.am0.yahoodns.net

IN A

67.195.204.73

mta5.am0.yahoodns.net

IN A

98.136.96.91
DNS

google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

google.com

IN MX

Response

google.com

IN MX

smtp�
DNS

smtp.google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

smtp.google.com

IN A

Response

smtp.google.com

IN A

142.250.27.27

smtp.google.com

IN A

142.250.102.27

smtp.google.com

IN A

142.250.27.26

smtp.google.com

IN A

142.250.102.26
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX

Response

mail.ru

IN MX

mxs�
DNS

mxs.mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mxs.mail.ru

IN A

Response

mxs.mail.ru

IN A

94.100.180.31

mxs.mail.ru

IN A

217.69.139.150
DNS

refabyd.info

svchost.exe

Remote address:

8.8.8.8:53

Request

refabyd.info

IN A

Response

20.76.201.171:80

microsoft.com

svchost.exe

190 B
132 B
4
3
52.101.42.0:25

microsoft-com.mail.protection.outlook.com

svchost.exe

152 B
3
67.195.204.79:25

mta5.am0.yahoodns.net

svchost.exe

152 B
3
142.250.27.27:25

smtp.google.com

svchost.exe

152 B
3
94.100.180.31:25

mxs.mail.ru

svchost.exe

152 B
3

8.8.8.8:53

microsoft.com

dns

svchost.exe

118 B
139 B
2
1

DNS Request

microsoft.com

DNS Request

microsoft.com

DNS Response

20.76.201.171

20.236.44.162

20.70.246.20

20.112.250.133

20.231.239.246
8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
113 B
1
1

DNS Request

microsoft.com
8.8.8.8:53

microsoft-com.mail.protection.outlook.com

dns

svchost.exe

87 B
151 B
1
1

DNS Request

microsoft-com.mail.protection.outlook.com

DNS Response

52.101.42.0

52.101.8.49

52.101.11.0

52.101.40.26
8.8.8.8:53

defeatwax.ru

dns

svchost.exe

58 B
119 B
1
1

DNS Request

defeatwax.ru
8.8.8.8:53

yahoo.com

dns

svchost.exe

55 B
134 B
1
1

DNS Request

yahoo.com
8.8.8.8:53

mta5.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta5.am0.yahoodns.net

DNS Response

67.195.204.79

67.195.228.110

67.195.204.77

98.136.96.77

67.195.228.106

98.136.96.74

67.195.204.73

98.136.96.91
8.8.8.8:53

google.com

dns

svchost.exe

56 B
77 B
1
1

DNS Request

google.com
8.8.8.8:53

smtp.google.com

dns

svchost.exe

61 B
125 B
1
1

DNS Request

smtp.google.com

DNS Response

142.250.27.27

142.250.102.27

142.250.27.26

142.250.102.26
8.8.8.8:53

mail.ru

dns

svchost.exe

53 B
73 B
1
1

DNS Request

mail.ru
8.8.8.8:53

mxs.mail.ru

dns

svchost.exe

57 B
89 B
1
1

DNS Request

mxs.mail.ru

DNS Response

94.100.180.31

217.69.139.150
8.8.8.8:53

refabyd.info

dns

svchost.exe

58 B
137 B
1
1

DNS Request

refabyd.info

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\svtoipzj.exe

Filesize
13.1MB

MD5
6830ff35289aa81ecfc5673f27f1e05d

SHA1
c915c0f0b5e91cc5700c2a7a2fd5938114ad4b36

SHA256
f37151c7b9ecf6cdfc1b516611d376b19a567554e6610ebc3b97935c71bb638f

SHA512
202a110dfa3626788c27c1e8c8d24df780e59ac5d67c7dc914003c4ffa74a2e63f935b9e87ff6384ca18c42665d2491e2174f0c928d640cd76a4e8fc7aa8b4bd

Download Submit
memory/1236-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1236-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1236-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1236-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1236-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2112-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2776-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2776-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2776-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2776-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2776-6-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2776-1-0x0000000002C80000-0x0000000002D80000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

MITRE ATT&CK Enterprise v15

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Downloads

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