tofsee | f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22/12/2024, 08:18 UTC

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General

Target

JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
Size

237KB
MD5

0cbf3ef7e6557d32b82e1c115d47ac0a
SHA1

7ee44a699bf8b5413e0df423fa488946daccae0a
SHA256

f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb
SHA512

bec960ad7604a51a6c1b41c3cd7bebdd96f4cb5e1aaf60494e5099fe9c05e5d96b3c456b992c46be93c12194b81c638eef29cb483d92b719a832c2221b6f541c
SSDEEP

6144:r4hC1W6n2IzYX7OsWf+I3UbJ+9ItiRatcQ9I:rYVY2IzYHWf+IKJ+CtiYW

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\irjboavw = "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
2824	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\irjboavw\ImagePath = "C:\\Windows\\SysWOW64\\irjboavw\\ejfxvyk.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2820	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2784	ejfxvyk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 2820	2784	ejfxvyk.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2572	sc.exe
2332	sc.exe
2164	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	ejfxvyk.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 300	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	30
PID 2648 wrote to memory of 300	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	30
PID 2648 wrote to memory of 300	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	30
PID 2648 wrote to memory of 300	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	30
PID 2648 wrote to memory of 1988	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	32
PID 2648 wrote to memory of 1988	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	32
PID 2648 wrote to memory of 1988	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	32
PID 2648 wrote to memory of 1988	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	32
PID 2648 wrote to memory of 2572	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	34
PID 2648 wrote to memory of 2572	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	34
PID 2648 wrote to memory of 2572	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	34
PID 2648 wrote to memory of 2572	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	34
PID 2648 wrote to memory of 2332	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	36
PID 2648 wrote to memory of 2332	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	36
PID 2648 wrote to memory of 2332	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	36
PID 2648 wrote to memory of 2332	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	36
PID 2648 wrote to memory of 2164	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	38
PID 2648 wrote to memory of 2164	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	38
PID 2648 wrote to memory of 2164	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	38
PID 2648 wrote to memory of 2164	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	38
PID 2648 wrote to memory of 2824	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	41
PID 2648 wrote to memory of 2824	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	41
PID 2648 wrote to memory of 2824	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	41
PID 2648 wrote to memory of 2824	2648	JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe	41
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43
PID 2784 wrote to memory of 2820	2784	ejfxvyk.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\irjboavw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ejfxvyk.exe" C:\Windows\SysWOW64\irjboavw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create irjboavw binPath= "C:\Windows\SysWOW64\irjboavw\ejfxvyk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description irjboavw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start irjboavw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2164
- 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:2824

C:\Windows\SysWOW64\irjboavw\ejfxvyk.exe
C:\Windows\SysWOW64\irjboavw\ejfxvyk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f24d1e07c7931d2e1ccf446f136c580960012a5ac3de1aba2d4032ddcd46a0fb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- 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:2820

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.231.239.246

microsoft.com

IN A

20.76.201.171

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.70.246.20
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

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49

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

mta7�.

yahoo.com

IN MX

mta6�.
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

67.195.228.111

mta5.am0.yahoodns.net

IN A

67.195.204.79

mta5.am0.yahoodns.net

IN A

67.195.228.106

mta5.am0.yahoodns.net

IN A

67.195.228.109

mta5.am0.yahoodns.net

IN A

67.195.228.94

mta5.am0.yahoodns.net

IN A

67.195.204.74

mta5.am0.yahoodns.net

IN A

98.136.96.77

mta5.am0.yahoodns.net

IN A

67.195.228.110
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

142.250.27.26

smtp.google.com

IN A

142.250.102.27

smtp.google.com

IN A

142.250.27.27

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

217.69.139.150

mxs.mail.ru

IN A

94.100.180.31
DNS

refabyd.info

svchost.exe

Remote address:

8.8.8.8:53

Request

refabyd.info

IN A

Response

20.236.44.162:80

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
67.195.228.111:25

mta5.am0.yahoodns.net

svchost.exe

152 B
3
142.250.27.26:25

smtp.google.com

svchost.exe

152 B
3
217.69.139.150:25

mxs.mail.ru

svchost.exe

152 B
3

8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
139 B
1
1

DNS Request

microsoft.com

DNS Response

20.236.44.162

20.231.239.246

20.76.201.171

20.112.250.133

20.70.246.20
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

52.101.11.0

52.101.8.49

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

67.195.228.111

67.195.204.79

67.195.228.106

67.195.228.109

67.195.228.94

67.195.204.74

98.136.96.77

67.195.228.110
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

142.250.27.26

142.250.102.27

142.250.27.27

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

217.69.139.150

94.100.180.31
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\ejfxvyk.exe

Filesize
13.2MB

MD5
4518446f019cbd2de8c51402207c6bfe

SHA1
bb61daccef2b70a801bea91bb1a5231f05c7cdeb

SHA256
ea054c44116973f577ed0129ac7fde28f9ff07e22c214a9928eee0549d02e907

SHA512
ebf8240cf5c79b94edf1000b3b041e2654ce32618d442ec8009cd91ea3c513b24a55c10a8531bcb16deff062504ef28a8fef82cab44e2ee64c6b0b6d307f60f2

Download Submit
memory/2648-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2648-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2648-1-0x00000000002B0000-0x00000000003B0000-memory.dmp

Filesize
1024KB

Download
memory/2648-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2648-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2648-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2784-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2820-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2820-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

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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