tofsee | 2617e0696091241eff473df91d50b96033d6b0b2af79e47e50503b42ea53f7c0

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-01-2025 18:58

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General

Target

2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
Size

14.5MB
MD5

de0805035b3a9aa55f09883322888394
SHA1

392914c76884aaf03d6c27766cec5f0ab12d6877
SHA256

2617e0696091241eff473df91d50b96033d6b0b2af79e47e50503b42ea53f7c0
SHA512

332d26c390db347f4f0ce5bfdc667dc7c080a25e0aa962ae2198f44934e45d8e7ea76b9c2d857f45be4b0dc1a281f9c5ace4177c59bf5f8aa040109c676f3ff8
SSDEEP

6144:bLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQY:wTYe+D2jFu+iZoUFhAz

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\asmjbtiw = "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
3036	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\asmjbtiw\ImagePath = "C:\\Windows\\SysWOW64\\asmjbtiw\\rzosfdmm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	rzosfdmm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2868 set thread context of 2836	2868	rzosfdmm.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2464	sc.exe
2884	sc.exe
2800	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rzosfdmm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1796	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	30
PID 1712 wrote to memory of 1796	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	30
PID 1712 wrote to memory of 1796	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	30
PID 1712 wrote to memory of 1796	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	30
PID 1712 wrote to memory of 2596	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	32
PID 1712 wrote to memory of 2596	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	32
PID 1712 wrote to memory of 2596	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	32
PID 1712 wrote to memory of 2596	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	32
PID 1712 wrote to memory of 2464	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	34
PID 1712 wrote to memory of 2464	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	34
PID 1712 wrote to memory of 2464	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	34
PID 1712 wrote to memory of 2464	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	34
PID 1712 wrote to memory of 2884	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	36
PID 1712 wrote to memory of 2884	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	36
PID 1712 wrote to memory of 2884	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	36
PID 1712 wrote to memory of 2884	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	36
PID 1712 wrote to memory of 2800	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	38
PID 1712 wrote to memory of 2800	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	38
PID 1712 wrote to memory of 2800	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	38
PID 1712 wrote to memory of 2800	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	38
PID 1712 wrote to memory of 3036	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	41
PID 1712 wrote to memory of 3036	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	41
PID 1712 wrote to memory of 3036	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	41
PID 1712 wrote to memory of 3036	1712	2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe	41
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43
PID 2868 wrote to memory of 2836	2868	rzosfdmm.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\asmjbtiw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rzosfdmm.exe" C:\Windows\SysWOW64\asmjbtiw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create asmjbtiw binPath= "C:\Windows\SysWOW64\asmjbtiw\rzosfdmm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description asmjbtiw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start asmjbtiw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2800
- 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:3036

C:\Windows\SysWOW64\asmjbtiw\rzosfdmm.exe
C:\Windows\SysWOW64\asmjbtiw\rzosfdmm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_de0805035b3a9aa55f09883322888394_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- 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:2836

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\rzosfdmm.exe

Filesize
10.4MB

MD5
2c667a2b6a7893e1131261a262e1b603

SHA1
189e8a7641c624ae184e0c7ff9585f4f4e386129

SHA256
a1d862c99b822fda77496561335cb7860532b6d28916289fe682d45a12e8a247

SHA512
09450bef5a1a89e64fd0d5cbdb120dbb77368d7ac32e67ad2ae9ba483e4053f124d023704962af0fb58f983b56b89f9ebca6960f98395d93b47985daf2d8c4f0

Download Submit
memory/1712-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/1712-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1712-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1712-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1712-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1712-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/2836-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2836-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2836-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2836-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2868-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads