tofsee | 1871a038c5133bcba2db205e78240a9014d9df40425007c77df9be913b70d851

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 09:57

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General

Target

2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe
Size

13.4MB
MD5

dbf282e8f2699b7b683a7c7f900d3224
SHA1

d06c54d9024c6a280684819ff347b96f9dd3f7d2
SHA256

1871a038c5133bcba2db205e78240a9014d9df40425007c77df9be913b70d851
SHA512

f0209aa921f52fa413d4dd4e60a9b50af094489f957486ecaddfcbfc41d48b371163fcbcf52474cfe56280b8d5a82e06b0ed96ba7040e83945498d8c5619c2cb
SSDEEP

196608:v3aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaai:v

Score

10^/10

tofsee discovery evasion 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

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\tpxznvxk = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2836	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\tpxznvxk\ImagePath = "C:\\Windows\\SysWOW64\\tpxznvxk\\bsloviut.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2864	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	bsloviut.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 2864	2252	bsloviut.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
1392	sc.exe
2716	sc.exe
2872	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_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	bsloviut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2332	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	30
PID 2068 wrote to memory of 2332	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	30
PID 2068 wrote to memory of 2332	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	30
PID 2068 wrote to memory of 2332	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	30
PID 2068 wrote to memory of 2508	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	33
PID 2068 wrote to memory of 2508	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	33
PID 2068 wrote to memory of 2508	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	33
PID 2068 wrote to memory of 2508	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	33
PID 2068 wrote to memory of 1392	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	35
PID 2068 wrote to memory of 1392	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	35
PID 2068 wrote to memory of 1392	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	35
PID 2068 wrote to memory of 1392	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	35
PID 2068 wrote to memory of 2716	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	37
PID 2068 wrote to memory of 2716	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	37
PID 2068 wrote to memory of 2716	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	37
PID 2068 wrote to memory of 2716	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	37
PID 2068 wrote to memory of 2872	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	39
PID 2068 wrote to memory of 2872	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	39
PID 2068 wrote to memory of 2872	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	39
PID 2068 wrote to memory of 2872	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	39
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2252 wrote to memory of 2864	2252	bsloviut.exe	42
PID 2068 wrote to memory of 2836	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	43
PID 2068 wrote to memory of 2836	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	43
PID 2068 wrote to memory of 2836	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	43
PID 2068 wrote to memory of 2836	2068	2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tpxznvxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsloviut.exe" C:\Windows\SysWOW64\tpxznvxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tpxznvxk binPath= "C:\Windows\SysWOW64\tpxznvxk\bsloviut.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tpxznvxk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tpxznvxk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2872
- 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:2836

C:\Windows\SysWOW64\tpxznvxk\bsloviut.exe
C:\Windows\SysWOW64\tpxznvxk\bsloviut.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-03_dbf282e8f2699b7b683a7c7f900d3224_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- 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:2864

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\bsloviut.exe

Filesize
12.1MB

MD5
994ab17664b09e5205fc61ad251629a4

SHA1
e45ac23efa22eda2a29a9995b5d90dd6a1608553

SHA256
d5339b6b3d942691abcd66027cc28664233a64423b9476580bd039ba06196940

SHA512
748bdbaea66c59e87356a605737e9b8fad4c4c41241ffbb594f14334c4e680ceb30fb073d19c07a172f38e7b9b199ee5ebb92deddd1b1f8772eaae20725caa7a

Download Submit
memory/2068-15-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2068-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2068-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2068-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2068-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2068-14-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2252-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2864-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2864-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads