tofsee | 18a690e2f3758e4eda45b7608faca27a34d9a1c99b387a8f48103c6b4fbbea51

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-01-2025 17:41

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General

Target

2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe
Size

10.4MB
MD5

4d3f792c6cbfcb14ca6860fe15496062
SHA1

8595241a52745516b3c5b08c9337bbb72c647ebd
SHA256

18a690e2f3758e4eda45b7608faca27a34d9a1c99b387a8f48103c6b4fbbea51
SHA512

94d36bae91aaf42df86f2f69c0d62d9f692129bfe7b50f5e6dca8ee085aac93ab7dfd5c93c1f382e7479963c8979e9e743ec22884f4d64518465dcc0f13658da
SSDEEP

24576:1pomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:foo

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\hormsssf = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2820	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\hormsssf\ImagePath = "C:\\Windows\\SysWOW64\\hormsssf\\hyubsrvz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2772	hyubsrvz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2772 set thread context of 2684	2772	hyubsrvz.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2208	sc.exe
860	sc.exe
2768	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hyubsrvz.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	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 1152	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	31
PID 2172 wrote to memory of 1152	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	31
PID 2172 wrote to memory of 1152	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	31
PID 2172 wrote to memory of 1152	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	31
PID 2172 wrote to memory of 1772	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	33
PID 2172 wrote to memory of 1772	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	33
PID 2172 wrote to memory of 1772	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	33
PID 2172 wrote to memory of 1772	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	33
PID 2172 wrote to memory of 2208	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	35
PID 2172 wrote to memory of 2208	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	35
PID 2172 wrote to memory of 2208	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	35
PID 2172 wrote to memory of 2208	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	35
PID 2172 wrote to memory of 860	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	37
PID 2172 wrote to memory of 860	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	37
PID 2172 wrote to memory of 860	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	37
PID 2172 wrote to memory of 860	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	37
PID 2172 wrote to memory of 2768	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	39
PID 2172 wrote to memory of 2768	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	39
PID 2172 wrote to memory of 2768	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	39
PID 2172 wrote to memory of 2768	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	39
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2772 wrote to memory of 2684	2772	hyubsrvz.exe	42
PID 2172 wrote to memory of 2820	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	43
PID 2172 wrote to memory of 2820	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	43
PID 2172 wrote to memory of 2820	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	43
PID 2172 wrote to memory of 2820	2172	2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hormsssf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hyubsrvz.exe" C:\Windows\SysWOW64\hormsssf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hormsssf binPath= "C:\Windows\SysWOW64\hormsssf\hyubsrvz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hormsssf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hormsssf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- 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:2820

C:\Windows\SysWOW64\hormsssf\hyubsrvz.exe
C:\Windows\SysWOW64\hormsssf\hyubsrvz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-23_4d3f792c6cbfcb14ca6860fe15496062_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- 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:2684

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\hyubsrvz.exe

Filesize
11.9MB

MD5
43912cb2fe341d6fc3aa12184a102220

SHA1
2c5f74bad8fec9c5f8b73e0cdbe42d121c265c99

SHA256
d5daa4b9a4ed75db637a9cd525480112b62089fb617c2b706e3a49f705da279c

SHA512
cce667df1736ba8f6dd1a57fabe79451c819bbf0b7d2c78006d485666defaccc6a870c47c4d87bb936f506d93a968651542164f6aad781c49f2fb128e4857381

Download Submit
memory/2172-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2172-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2172-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2172-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2172-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2172-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2684-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2684-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2684-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2684-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2772-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads