tofsee | 8caaa77edf1243eec9a766ad37679232215994a8d7f9d2d45d1778f4577f9a26

Analysis

max time kernel
143s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-10-2024 12:09

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General

Target

2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe
Size

13.1MB
MD5

cbe4039a430cd860ed47cdb1d3e0401a
SHA1

4fc93cbda5f8e8b69547b1ebc3ef3ff544bbc977
SHA256

8caaa77edf1243eec9a766ad37679232215994a8d7f9d2d45d1778f4577f9a26
SHA512

a0e587337edc018e39a5d5f518504f2d153738595590e1ae1b8eb75912502308dc89914393d990ead4d0b9a68d1e6ca5fbbe08bbfc9b20c34738dff7713d0fc0
SSDEEP

12288:TVbj7zJB99tzBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBv:TJzXd

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

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\risksbfm = "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
2668	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\risksbfm\ImagePath = "C:\\Windows\\SysWOW64\\risksbfm\\iuthscke.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	iuthscke.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2836	2792	iuthscke.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2004	sc.exe
2684	sc.exe
2808	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.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	iuthscke.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 1200	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	31
PID 2312 wrote to memory of 1200	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	31
PID 2312 wrote to memory of 1200	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	31
PID 2312 wrote to memory of 1200	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	31
PID 2312 wrote to memory of 1328	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	33
PID 2312 wrote to memory of 1328	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	33
PID 2312 wrote to memory of 1328	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	33
PID 2312 wrote to memory of 1328	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	33
PID 2312 wrote to memory of 2004	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	35
PID 2312 wrote to memory of 2004	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	35
PID 2312 wrote to memory of 2004	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	35
PID 2312 wrote to memory of 2004	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	35
PID 2312 wrote to memory of 2684	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	37
PID 2312 wrote to memory of 2684	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	37
PID 2312 wrote to memory of 2684	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	37
PID 2312 wrote to memory of 2684	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	37
PID 2312 wrote to memory of 2808	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	39
PID 2312 wrote to memory of 2808	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	39
PID 2312 wrote to memory of 2808	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	39
PID 2312 wrote to memory of 2808	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	39
PID 2312 wrote to memory of 2668	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	42
PID 2312 wrote to memory of 2668	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	42
PID 2312 wrote to memory of 2668	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	42
PID 2312 wrote to memory of 2668	2312	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	42
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44
PID 2792 wrote to memory of 2836	2792	iuthscke.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\risksbfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iuthscke.exe" C:\Windows\SysWOW64\risksbfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create risksbfm binPath= "C:\Windows\SysWOW64\risksbfm\iuthscke.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description risksbfm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start risksbfm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- 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:2668

C:\Windows\SysWOW64\risksbfm\iuthscke.exe
C:\Windows\SysWOW64\risksbfm\iuthscke.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- 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:2836

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\iuthscke.exe

Filesize
10.4MB

MD5
5f940ce4cce2cb9cb633ba21462d3610

SHA1
96ee58ed7017cbedfc33c29be2bcf95c2ff4171c

SHA256
47ffff4257800fa02f23bd551b76148f1627605615a9bf85c1dc26f1a54f02ed

SHA512
427cde92e80ea094ee7af348c277315638eec45c035edf69773b160facf09b14988b88f82e051d5b745f5e27ea2694b9cd43a00e10b340bb59c8b0ae6ae3a346

Download Submit
memory/2312-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2312-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2312-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/2792-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2836-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads