tofsee | f12c3ea15e645b1685fbed815adcfdd21374d5f48ae50c45e9ddbad1edc4d39b

Analysis

max time kernel
147s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 00:18

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General

Target

JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe
Size

11.7MB
MD5

42a65373c62c1257fd39534ab11140c8
SHA1

24dbfae85496e3c18ddb89d279f4e82fec9a2cac
SHA256

f12c3ea15e645b1685fbed815adcfdd21374d5f48ae50c45e9ddbad1edc4d39b
SHA512

afb7a35ba6a56a3cb9caf87b9aa0713e7fa6371164d2946425f571b699723354f3f21af8fbf84f8fed5d376905521f396500692bc0ec34067cbd2065c37e793f
SSDEEP

49152:Dyn7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x/:Dy

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

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\cdgmltmw = "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
2516	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\cdgmltmw\ImagePath = "C:\\Windows\\SysWOW64\\cdgmltmw\\prmslyi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2984	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	prmslyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2984	2664	prmslyi.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2136	sc.exe
2224	sc.exe
2688	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.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	prmslyi.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2764	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	30
PID 3044 wrote to memory of 2764	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	30
PID 3044 wrote to memory of 2764	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	30
PID 3044 wrote to memory of 2764	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	30
PID 3044 wrote to memory of 2392	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	32
PID 3044 wrote to memory of 2392	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	32
PID 3044 wrote to memory of 2392	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	32
PID 3044 wrote to memory of 2392	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	32
PID 3044 wrote to memory of 2136	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	34
PID 3044 wrote to memory of 2136	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	34
PID 3044 wrote to memory of 2136	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	34
PID 3044 wrote to memory of 2136	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	34
PID 3044 wrote to memory of 2224	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	36
PID 3044 wrote to memory of 2224	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	36
PID 3044 wrote to memory of 2224	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	36
PID 3044 wrote to memory of 2224	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	36
PID 3044 wrote to memory of 2688	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	38
PID 3044 wrote to memory of 2688	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	38
PID 3044 wrote to memory of 2688	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	38
PID 3044 wrote to memory of 2688	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	38
PID 3044 wrote to memory of 2516	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	41
PID 3044 wrote to memory of 2516	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	41
PID 3044 wrote to memory of 2516	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	41
PID 3044 wrote to memory of 2516	3044	JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe	41
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43
PID 2664 wrote to memory of 2984	2664	prmslyi.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cdgmltmw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\prmslyi.exe" C:\Windows\SysWOW64\cdgmltmw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cdgmltmw binPath= "C:\Windows\SysWOW64\cdgmltmw\prmslyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cdgmltmw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cdgmltmw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- 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:2516

C:\Windows\SysWOW64\cdgmltmw\prmslyi.exe
C:\Windows\SysWOW64\cdgmltmw\prmslyi.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_42a65373c62c1257fd39534ab11140c8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2664
- 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:2984

Network

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\prmslyi.exe

Filesize
12.4MB

MD5
5d472effd16f0528c94eb98fc7586cc4

SHA1
0810a6d93c5c5b415fb2a76dde7d18dccf5fc375

SHA256
56a554a8800d754eddf1a955abadb5654d0ebc5b3ba81f3e020c1ed9c2a16bf8

SHA512
392e4a67d00138a3b0897659b2b2c24731f7e650b4701ef1e5bb61b2f4829fb8c152df8fe0cc352d60f64e29b2c5848603da81271846c0282be878f1b36c8ec0

Download Submit
memory/2664-15-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2984-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2984-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2984-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3044-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3044-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/3044-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3044-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads