tofsee | 3883f7927d9a470d2f0e5caa406094a5ea98363b1662d164dda2ae418694ccaa

Analysis

max time kernel
150s
max time network
128s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 21:34

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General

Target

2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe
Size

10.4MB
MD5

dbaca676d7748ddea7c422b6240bc82e
SHA1

e2e79aa17b521cfbbbbbc88d7e048edcc6071df8
SHA256

3883f7927d9a470d2f0e5caa406094a5ea98363b1662d164dda2ae418694ccaa
SHA512

9c1d8d25262721a64329db9d1af97ab1daeee88896ba0ca350c2600657314dba09b5f1983eef555783114b832ac583772f06b11ddab36c21aa68295bbeea5448
SSDEEP

24576:86WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQX:RWdLQk

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\bwchsdra = "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
2900	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\bwchsdra\ImagePath = "C:\\Windows\\SysWOW64\\bwchsdra\\kgyyvkjx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2696	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	kgyyvkjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3032 set thread context of 2696	3032	kgyyvkjx.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2288	sc.exe
2816	sc.exe
2932	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	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kgyyvkjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 1952	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	29
PID 2072 wrote to memory of 1952	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	29
PID 2072 wrote to memory of 1952	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	29
PID 2072 wrote to memory of 1952	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	29
PID 2072 wrote to memory of 2948	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	31
PID 2072 wrote to memory of 2948	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	31
PID 2072 wrote to memory of 2948	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	31
PID 2072 wrote to memory of 2948	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	31
PID 2072 wrote to memory of 2288	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	33
PID 2072 wrote to memory of 2288	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	33
PID 2072 wrote to memory of 2288	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	33
PID 2072 wrote to memory of 2288	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	33
PID 2072 wrote to memory of 2816	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	35
PID 2072 wrote to memory of 2816	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	35
PID 2072 wrote to memory of 2816	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	35
PID 2072 wrote to memory of 2816	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	35
PID 2072 wrote to memory of 2932	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	37
PID 2072 wrote to memory of 2932	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	37
PID 2072 wrote to memory of 2932	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	37
PID 2072 wrote to memory of 2932	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	37
PID 2072 wrote to memory of 2900	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	40
PID 2072 wrote to memory of 2900	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	40
PID 2072 wrote to memory of 2900	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	40
PID 2072 wrote to memory of 2900	2072	2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe	40
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42
PID 3032 wrote to memory of 2696	3032	kgyyvkjx.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bwchsdra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kgyyvkjx.exe" C:\Windows\SysWOW64\bwchsdra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bwchsdra binPath= "C:\Windows\SysWOW64\bwchsdra\kgyyvkjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bwchsdra "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bwchsdra
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- 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:2900

C:\Windows\SysWOW64\bwchsdra\kgyyvkjx.exe
C:\Windows\SysWOW64\bwchsdra\kgyyvkjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_dbaca676d7748ddea7c422b6240bc82e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- 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:2696

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\kgyyvkjx.exe

Filesize
12.4MB

MD5
828b665701920dd07f954cf0b6b3bf3c

SHA1
d7ac7c6db035d70219beb99290867b2b03254157

SHA256
2cdc7f9b999451dfb64dd49053ccf1e9446520a532e383f361bdc355167fb5ac

SHA512
8d506c1c8079845aa045a609dab1e98ce7d4b43b3ca8e9b7b18e9c3a4899e23a47fabb6b2bf7c8812ccc8fbc06b5f80f701c9faccfb5cafb8a96a92e468878d7

Download Submit
memory/2072-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2072-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2072-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2072-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2072-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2072-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2696-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2696-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2696-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2696-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2696-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3032-15-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads