tofsee | d1b4a9cccedcd4d9dd40304709c39a7c54044be6f6cb78ad7f196b3ad9cd7047

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/01/2025, 07:05

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General

Target

2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe
Size

10.1MB
MD5

5f4f6a20e5034ad0162008b66a0f2ed7
SHA1

db477f781b457784413f15cdb155549a71a3b1e3
SHA256

d1b4a9cccedcd4d9dd40304709c39a7c54044be6f6cb78ad7f196b3ad9cd7047
SHA512

348bf86d77da93fd0f18bc0bcfbeb62e939df36244a6d20dbb1fe4ec6b5bc6782363e6a61304c57fc5fdb41f648954b0bf9bf78c01b3d621127a431a089f4edc
SSDEEP

3072:/LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:2OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\ezehfcsz = "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
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\ezehfcsz\ImagePath = "C:\\Windows\\SysWOW64\\ezehfcsz\\ulhofeim.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2716	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1576	ulhofeim.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1576 set thread context of 2716	1576	ulhofeim.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2876	sc.exe
2856	sc.exe
3004	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ulhofeim.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2744	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	30
PID 2316 wrote to memory of 2744	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	30
PID 2316 wrote to memory of 2744	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	30
PID 2316 wrote to memory of 2744	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	30
PID 2316 wrote to memory of 2820	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	32
PID 2316 wrote to memory of 2820	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	32
PID 2316 wrote to memory of 2820	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	32
PID 2316 wrote to memory of 2820	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	32
PID 2316 wrote to memory of 3004	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	34
PID 2316 wrote to memory of 3004	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	34
PID 2316 wrote to memory of 3004	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	34
PID 2316 wrote to memory of 3004	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	34
PID 2316 wrote to memory of 2876	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	36
PID 2316 wrote to memory of 2876	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	36
PID 2316 wrote to memory of 2876	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	36
PID 2316 wrote to memory of 2876	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	36
PID 2316 wrote to memory of 2856	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	38
PID 2316 wrote to memory of 2856	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	38
PID 2316 wrote to memory of 2856	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	38
PID 2316 wrote to memory of 2856	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	38
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 1576 wrote to memory of 2716	1576	ulhofeim.exe	41
PID 2316 wrote to memory of 2668	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	42
PID 2316 wrote to memory of 2668	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	42
PID 2316 wrote to memory of 2668	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	42
PID 2316 wrote to memory of 2668	2316	2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ezehfcsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ulhofeim.exe" C:\Windows\SysWOW64\ezehfcsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ezehfcsz binPath= "C:\Windows\SysWOW64\ezehfcsz\ulhofeim.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ezehfcsz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ezehfcsz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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\ezehfcsz\ulhofeim.exe
C:\Windows\SysWOW64\ezehfcsz\ulhofeim.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_5f4f6a20e5034ad0162008b66a0f2ed7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1576
- 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:2716

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\ulhofeim.exe

Filesize
10.3MB

MD5
436f3f4351865fdad50a16c2356d2ac2

SHA1
af73c647d938a24548d56c58dfff155c39be087b

SHA256
e9a2cc4b78ea58a60129a46c78598d18a9cfadaeb63f5e869035e5b020a9c22a

SHA512
b40a6af767d646a18790a8567ed5d480b745298888e0f8f783ed43ada2fdd2d7dbfef7a566611d4724daf50a603024d7ee20a9321839b290133b5488fcfba898

Download Submit
memory/1576-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2316-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2316-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2316-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2316-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2316-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2316-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2716-11-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2716-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-8-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2716-17-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2716-18-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads