tofsee | d4f6e6c039c0b9b44b8dd3c4b62384ec1967f8e11298bcd7f2fb3beb4a8fb1bd

Analysis

max time kernel
147s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-01-2025 13:03

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General

Target

2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe
Size

14.1MB
MD5

7af22b3753cd6a2fa080aa653cf75653
SHA1

f1ab71458a9f0f812c7fab6d5a90d925710098d3
SHA256

d4f6e6c039c0b9b44b8dd3c4b62384ec1967f8e11298bcd7f2fb3beb4a8fb1bd
SHA512

ee484afc24d342312e91cfff965a8ff90adc34dba0cde231a492b907fd704c1fc43544d613c6d0d66ce256541c158871494e41e7c95aea7ce353c132ccb327be
SSDEEP

24576:z6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQw:+WdLQkC

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\hlssznmb = "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
2708	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\hlssznmb\ImagePath = "C:\\Windows\\SysWOW64\\hlssznmb\\bkejbavr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2760	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3040	bkejbavr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3040 set thread context of 2760	3040	bkejbavr.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
380	sc.exe
1284	sc.exe
2812	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	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	bkejbavr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 1960	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	30
PID 720 wrote to memory of 1960	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	30
PID 720 wrote to memory of 1960	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	30
PID 720 wrote to memory of 1960	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	30
PID 720 wrote to memory of 2576	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	32
PID 720 wrote to memory of 2576	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	32
PID 720 wrote to memory of 2576	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	32
PID 720 wrote to memory of 2576	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	32
PID 720 wrote to memory of 380	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	34
PID 720 wrote to memory of 380	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	34
PID 720 wrote to memory of 380	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	34
PID 720 wrote to memory of 380	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	34
PID 720 wrote to memory of 1284	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	36
PID 720 wrote to memory of 1284	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	36
PID 720 wrote to memory of 1284	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	36
PID 720 wrote to memory of 1284	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	36
PID 720 wrote to memory of 2812	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	38
PID 720 wrote to memory of 2812	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	38
PID 720 wrote to memory of 2812	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	38
PID 720 wrote to memory of 2812	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	38
PID 720 wrote to memory of 2708	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	41
PID 720 wrote to memory of 2708	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	41
PID 720 wrote to memory of 2708	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	41
PID 720 wrote to memory of 2708	720	2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe	41
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43
PID 3040 wrote to memory of 2760	3040	bkejbavr.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hlssznmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bkejbavr.exe" C:\Windows\SysWOW64\hlssznmb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hlssznmb binPath= "C:\Windows\SysWOW64\hlssznmb\bkejbavr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hlssznmb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hlssznmb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2812
- 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:2708

C:\Windows\SysWOW64\hlssznmb\bkejbavr.exe
C:\Windows\SysWOW64\hlssznmb\bkejbavr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_7af22b3753cd6a2fa080aa653cf75653_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- 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:2760

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\bkejbavr.exe

Filesize
13.9MB

MD5
f121326787cb4ff28eff99c34f42da5d

SHA1
127a4512265bec6dadc7eff764e40ce4d7631e08

SHA256
55ed91a4e76ed51dc6e85dc18ce93db16385ff3014325a8d2775f293ac098d4e

SHA512
d34f19bf42f4cdb13541081757b79297aa8010ca406264c49e03ee2935d9e25d91cf882f347073758d7504e500d6e92f6b4e533da6930550087045fc665f260c

Download Submit
memory/720-8-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/720-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/720-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/720-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/720-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/720-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2760-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2760-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2760-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2760-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2760-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2760-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3040-15-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads