tofsee | 631e4b7cd1f6f46adb711082731df6272005bbb08a60816958940926620fa003

Analysis

max time kernel
143s
max time network
125s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02/02/2025, 20:09

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General

Target

2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe
Size

13.1MB
MD5

1e9e9885708a14f2cba86d51c4868636
SHA1

82347df849fe9e5f1c109e98a55aa4a87f02d6c9
SHA256

631e4b7cd1f6f46adb711082731df6272005bbb08a60816958940926620fa003
SHA512

fa215415e49138a260b037294541a444d31d577d939e8a795f550ca85e6157260bcc300e6b70368b8f9d4dc1b481f209430bc71ec2f38fda601bad69b6a4a0b4
SSDEEP

24576:aEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT:zfot

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\bfdzojat = "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
2852	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\bfdzojat\ImagePath = "C:\\Windows\\SysWOW64\\bfdzojat\\zhwanluu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1184	zhwanluu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 2788	1184	zhwanluu.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2116	sc.exe
3028	sc.exe
2184	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	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zhwanluu.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2860	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	29
PID 2304 wrote to memory of 2860	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	29
PID 2304 wrote to memory of 2860	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	29
PID 2304 wrote to memory of 2860	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	29
PID 2304 wrote to memory of 2992	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	31
PID 2304 wrote to memory of 2992	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	31
PID 2304 wrote to memory of 2992	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	31
PID 2304 wrote to memory of 2992	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	31
PID 2304 wrote to memory of 2116	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	33
PID 2304 wrote to memory of 2116	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	33
PID 2304 wrote to memory of 2116	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	33
PID 2304 wrote to memory of 2116	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	33
PID 2304 wrote to memory of 3028	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	35
PID 2304 wrote to memory of 3028	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	35
PID 2304 wrote to memory of 3028	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	35
PID 2304 wrote to memory of 3028	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	35
PID 2304 wrote to memory of 2184	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	37
PID 2304 wrote to memory of 2184	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	37
PID 2304 wrote to memory of 2184	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	37
PID 2304 wrote to memory of 2184	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	37
PID 2304 wrote to memory of 2852	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	39
PID 2304 wrote to memory of 2852	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	39
PID 2304 wrote to memory of 2852	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	39
PID 2304 wrote to memory of 2852	2304	2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe	39
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42
PID 1184 wrote to memory of 2788	1184	zhwanluu.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bfdzojat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zhwanluu.exe" C:\Windows\SysWOW64\bfdzojat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bfdzojat binPath= "C:\Windows\SysWOW64\bfdzojat\zhwanluu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bfdzojat "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bfdzojat
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- 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:2852

C:\Windows\SysWOW64\bfdzojat\zhwanluu.exe
C:\Windows\SysWOW64\bfdzojat\zhwanluu.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_1e9e9885708a14f2cba86d51c4868636_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1184
- 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:2788

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\zhwanluu.exe

Filesize
13.0MB

MD5
47ab925288d38bc88c9eb323ff019af6

SHA1
7c6db9d313add5f6005e1d421f67328b00ae6fb3

SHA256
a8056552f96feba4cdeba5a9dce4d6bee87ecd4997a7bba27dbdafdea77eb832

SHA512
94047dcc5ddf1138a0f1d8d46eb6b9c0d1b83ddbff36680d9fbd236a242c99baf073bd803201e1012b9d4bef863f144fbeaf8df590aa0ef1c7654db34a97370c

Download Submit
memory/1184-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2304-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-6-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2304-7-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2304-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2304-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2788-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads