tofsee | ac2dbc87f1ab034db4bf8ff17f8497df23f198c8fc76e397a05137cbd768cb87

Analysis

max time kernel
146s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-01-2025 01:17

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General

Target

2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe
Size

10.8MB
MD5

ca8ee4733e7ba78b415231884f389a1b
SHA1

74754a1e264173cfdf792bcb0c9457d10ff7e2a7
SHA256

ac2dbc87f1ab034db4bf8ff17f8497df23f198c8fc76e397a05137cbd768cb87
SHA512

b472b23c4564247fa06807a70c94b779646e3089754cb564d277e23681620e0115ce3cbd7a737648ebb40ee3f9a9f3985c5bd510d8077f18a8de4ea3a1e1edf8
SSDEEP

49152:/LFuiE8888888888888888888888888888888888888888888888888888888883:/LM

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\vyjthliu = "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
2796	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\vyjthliu\ImagePath = "C:\\Windows\\SysWOW64\\vyjthliu\\clfkcbws.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2688	clfkcbws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2688 set thread context of 2664	2688	clfkcbws.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
292	sc.exe
2660	sc.exe
2772	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	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.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	clfkcbws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 2960	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	31
PID 1840 wrote to memory of 2960	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	31
PID 1840 wrote to memory of 2960	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	31
PID 1840 wrote to memory of 2960	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	31
PID 1840 wrote to memory of 532	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	33
PID 1840 wrote to memory of 532	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	33
PID 1840 wrote to memory of 532	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	33
PID 1840 wrote to memory of 532	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	33
PID 1840 wrote to memory of 292	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	35
PID 1840 wrote to memory of 292	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	35
PID 1840 wrote to memory of 292	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	35
PID 1840 wrote to memory of 292	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	35
PID 1840 wrote to memory of 2660	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	37
PID 1840 wrote to memory of 2660	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	37
PID 1840 wrote to memory of 2660	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	37
PID 1840 wrote to memory of 2660	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	37
PID 1840 wrote to memory of 2772	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	39
PID 1840 wrote to memory of 2772	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	39
PID 1840 wrote to memory of 2772	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	39
PID 1840 wrote to memory of 2772	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	39
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 2688 wrote to memory of 2664	2688	clfkcbws.exe	42
PID 1840 wrote to memory of 2796	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	43
PID 1840 wrote to memory of 2796	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	43
PID 1840 wrote to memory of 2796	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	43
PID 1840 wrote to memory of 2796	1840	2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vyjthliu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clfkcbws.exe" C:\Windows\SysWOW64\vyjthliu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vyjthliu binPath= "C:\Windows\SysWOW64\vyjthliu\clfkcbws.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vyjthliu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vyjthliu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2772
- 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:2796

C:\Windows\SysWOW64\vyjthliu\clfkcbws.exe
C:\Windows\SysWOW64\vyjthliu\clfkcbws.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ca8ee4733e7ba78b415231884f389a1b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- 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:2664

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\clfkcbws.exe

Filesize
12.2MB

MD5
2e9dcaac1ed1f6121b411862b6126919

SHA1
59edbaeb5f82d54941a3549f6118d46d1ccdc8ab

SHA256
4586a78e6e9cc5c46d3b1baac61ccc26b89e68b660d2510fd49fef74d32e07af

SHA512
5459e0df91c2f4f012c0010ecd4df6c22f304d21fbe0e499c185d26acce5706bcd6eedf7a588831276098bbd70a2461ab46a428d75542ac5f2f60141c1668620

Download Submit
memory/1840-15-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/1840-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-2-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/1840-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/1840-14-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download
memory/2664-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2688-12-0x0000000000400000-0x0000000002DBF000-memory.dmp

Filesize
41.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads