tofsee | e011e16fb9e3f6f6334dfea2072bf5d9dbc1e37ebd683e580025baf5bf11719a

Analysis

max time kernel
145s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-01-2025 19:04

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General

Target

2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe
Size

13.9MB
MD5

912c1dae45e7db0d5261b748d9c5bcb0
SHA1

1f0c9a788abb66e516820b2ba3293e21cafaf8db
SHA256

e011e16fb9e3f6f6334dfea2072bf5d9dbc1e37ebd683e580025baf5bf11719a
SHA512

a2b5aefba591293da7fbabcbe66e06daca0ddd1bde106c3998e0ec8dba9de0933f857a869f5e09d316e159f88f90f3f8403c5e0aeda8e15d5f0ff95962bb4b61
SSDEEP

6144:sLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ:BTYe+D2jFu+iZoUFhAz

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\mupvcjcb = "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
2628	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\mupvcjcb\ImagePath = "C:\\Windows\\SysWOW64\\mupvcjcb\\nvkobzii.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2624	nvkobzii.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2624 set thread context of 2464	2624	nvkobzii.exe	39

Launches sc.exe 3 IoCs

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

pid	Process
2612	sc.exe
2496	sc.exe
2484	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	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nvkobzii.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2564	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	28
PID 2192 wrote to memory of 2564	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	28
PID 2192 wrote to memory of 2564	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	28
PID 2192 wrote to memory of 2564	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	28
PID 2192 wrote to memory of 2752	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	30
PID 2192 wrote to memory of 2752	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	30
PID 2192 wrote to memory of 2752	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	30
PID 2192 wrote to memory of 2752	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	30
PID 2192 wrote to memory of 2612	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	32
PID 2192 wrote to memory of 2612	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	32
PID 2192 wrote to memory of 2612	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	32
PID 2192 wrote to memory of 2612	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	32
PID 2192 wrote to memory of 2496	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	34
PID 2192 wrote to memory of 2496	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	34
PID 2192 wrote to memory of 2496	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	34
PID 2192 wrote to memory of 2496	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	34
PID 2192 wrote to memory of 2484	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	36
PID 2192 wrote to memory of 2484	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	36
PID 2192 wrote to memory of 2484	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	36
PID 2192 wrote to memory of 2484	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	36
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2624 wrote to memory of 2464	2624	nvkobzii.exe	39
PID 2192 wrote to memory of 2628	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	40
PID 2192 wrote to memory of 2628	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	40
PID 2192 wrote to memory of 2628	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	40
PID 2192 wrote to memory of 2628	2192	2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe	40

C:\Users\Admin\AppData\Local\Temp\2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mupvcjcb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nvkobzii.exe" C:\Windows\SysWOW64\mupvcjcb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mupvcjcb binPath= "C:\Windows\SysWOW64\mupvcjcb\nvkobzii.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mupvcjcb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mupvcjcb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2484
- 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:2628

C:\Windows\SysWOW64\mupvcjcb\nvkobzii.exe
C:\Windows\SysWOW64\mupvcjcb\nvkobzii.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_912c1dae45e7db0d5261b748d9c5bcb0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2624
- 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:2464

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\nvkobzii.exe

Filesize
11.0MB

MD5
198c30720d6bbe7fab2860668704ff7f

SHA1
20b400cc27c2f6f73b1e32b20e1ce79583b2461b

SHA256
0a7c524ad72710183243d63e667dd8f71ab83c4c37e414b97b17281b73eaade8

SHA512
4d53aa42e1f9cd4de6ee1b6cc2f5bf18d3d564acda11c8fef1fe8c9abdb86667187868ad54d10080993123581499734cc3bb6b6155a40bde8e3f75e7f98943ff

Download Submit
memory/2192-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2192-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2192-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2192-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2192-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2464-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2464-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2464-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2464-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2464-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads