tofsee | 66f669015d25d10933e57ad3605fed3c082c466e0851900a0c130d16b0ae6a4a

General

Target

2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe
Size

13.7MB
MD5

e4f89850577cb7f0f8d29febdb8ac5b8
SHA1

661eb50b70b7665fb03418e2d60f6546cda2c1a4
SHA256

66f669015d25d10933e57ad3605fed3c082c466e0851900a0c130d16b0ae6a4a
SHA512

43f326ea6551b61551eb88495ae96ad5ba5a6dcc5f54059721b2393dbeb656c4006b2c8d252712f43c16b60b51111c9d6a768941095ff395f5ad4420b042079d
SSDEEP

6144:fLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQg:ETYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
3784	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\rvzluzso\ImagePath = "C:\\Windows\\SysWOW64\\rvzluzso\\bzijsodz.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe

Deletes itself 1 IoCs

pid	Process
2940	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	bzijsodz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2236 set thread context of 2940	2236	bzijsodz.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4048	sc.exe
2768	sc.exe
952	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3340	4528	WerFault.exe	83
4340	2236	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzijsodz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 3728	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	84
PID 4528 wrote to memory of 3728	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	84
PID 4528 wrote to memory of 3728	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	84
PID 4528 wrote to memory of 2344	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	86
PID 4528 wrote to memory of 2344	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	86
PID 4528 wrote to memory of 2344	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	86
PID 4528 wrote to memory of 4048	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	88
PID 4528 wrote to memory of 4048	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	88
PID 4528 wrote to memory of 4048	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	88
PID 4528 wrote to memory of 2768	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	90
PID 4528 wrote to memory of 2768	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	90
PID 4528 wrote to memory of 2768	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	90
PID 4528 wrote to memory of 952	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	92
PID 4528 wrote to memory of 952	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	92
PID 4528 wrote to memory of 952	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	92
PID 4528 wrote to memory of 3784	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	95
PID 4528 wrote to memory of 3784	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	95
PID 4528 wrote to memory of 3784	4528	2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe	95
PID 2236 wrote to memory of 2940	2236	bzijsodz.exe	100
PID 2236 wrote to memory of 2940	2236	bzijsodz.exe	100
PID 2236 wrote to memory of 2940	2236	bzijsodz.exe	100
PID 2236 wrote to memory of 2940	2236	bzijsodz.exe	100
PID 2236 wrote to memory of 2940	2236	bzijsodz.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rvzluzso\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzijsodz.exe" C:\Windows\SysWOW64\rvzluzso\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rvzluzso binPath= "C:\Windows\SysWOW64\rvzluzso\bzijsodz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rvzluzso "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rvzluzso
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:952
- 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:3784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 1044
  2⤵
  - Program crash
  PID:3340

C:\Windows\SysWOW64\rvzluzso\bzijsodz.exe
C:\Windows\SysWOW64\rvzluzso\bzijsodz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_e4f89850577cb7f0f8d29febdb8ac5b8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2236 -s 512
  2⤵
  - Program crash
  PID:4340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4528 -ip 4528
1⤵
PID:724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2236 -ip 2236
1⤵
PID:920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bzijsodz.exe

Filesize
12.1MB

MD5
73dd5f0af49373895b7bbf928ae7dc11

SHA1
455b2bbf89a836fbf13d6c5d06c03b7898769342

SHA256
3edba373e2de42f3837ee20aa487927ddc8fa8abb0b584153335e8987219c654

SHA512
322ed892c5c25770dbdf0d8cd8bc3141fb4e5dd2413d8bb5e9c722f7f6f4ddc569da10f809538d4a546c46cd9c389b340418308318bbd3ba9f44d00847cc6de7

Download Submit
memory/2236-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2236-18-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2236-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2940-10-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/2940-13-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/2940-19-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/2940-20-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/2940-21-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/4528-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4528-2-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4528-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4528-15-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4528-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4528-1-0x00000000008C0000-0x00000000009C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads