tofsee | 764de042f5f83bc6e5b7f9e4843b783a4e1aebe7e0d9bc4a3eb6ae9f849607f0

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-01-2025 19:39

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General

Target

2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe
Size

14.4MB
MD5

898f8b76a4b79853b2483f0d96d55db8
SHA1

18d283e2c9076d72a2f218517d83aedf04ca031f
SHA256

764de042f5f83bc6e5b7f9e4843b783a4e1aebe7e0d9bc4a3eb6ae9f849607f0
SHA512

bda64aa2d29ca562d5fcb4b164a42f989b6dbad288b93c979d54f6b96c9db7cf8ee4e7b9222f74100d000ba47e63ae4119c9bddf3bfe711539e93510fe996c4e
SSDEEP

49152:KqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:KqtYc3

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\jfgzuoib = "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
2584	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\jfgzuoib\ImagePath = "C:\\Windows\\SysWOW64\\jfgzuoib\\rrsdyzxf.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2604	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	rrsdyzxf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 2604	2536	rrsdyzxf.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2736	sc.exe
2556	sc.exe
2808	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	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_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	rrsdyzxf.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 2084 wrote to memory of 2888	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	31
PID 2084 wrote to memory of 2888	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	31
PID 2084 wrote to memory of 2888	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	31
PID 2084 wrote to memory of 2888	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	31
PID 2084 wrote to memory of 3048	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	33
PID 2084 wrote to memory of 3048	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	33
PID 2084 wrote to memory of 3048	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	33
PID 2084 wrote to memory of 3048	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	33
PID 2084 wrote to memory of 2736	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	35
PID 2084 wrote to memory of 2736	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	35
PID 2084 wrote to memory of 2736	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	35
PID 2084 wrote to memory of 2736	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	35
PID 2084 wrote to memory of 2556	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	37
PID 2084 wrote to memory of 2556	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	37
PID 2084 wrote to memory of 2556	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	37
PID 2084 wrote to memory of 2556	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	37
PID 2084 wrote to memory of 2808	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	39
PID 2084 wrote to memory of 2808	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	39
PID 2084 wrote to memory of 2808	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	39
PID 2084 wrote to memory of 2808	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	39
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2536 wrote to memory of 2604	2536	rrsdyzxf.exe	42
PID 2084 wrote to memory of 2584	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	43
PID 2084 wrote to memory of 2584	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	43
PID 2084 wrote to memory of 2584	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	43
PID 2084 wrote to memory of 2584	2084	2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jfgzuoib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rrsdyzxf.exe" C:\Windows\SysWOW64\jfgzuoib\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jfgzuoib binPath= "C:\Windows\SysWOW64\jfgzuoib\rrsdyzxf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jfgzuoib "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jfgzuoib
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- 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:2584

C:\Windows\SysWOW64\jfgzuoib\rrsdyzxf.exe
C:\Windows\SysWOW64\jfgzuoib\rrsdyzxf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_898f8b76a4b79853b2483f0d96d55db8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- 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:2604

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\rrsdyzxf.exe

Filesize
13.7MB

MD5
63dcaac1b381fa7e88d8cd2e4cdd8d74

SHA1
c30c822977803bfab85a9ff37961517bd74c8311

SHA256
e1df3fe8c0ae2b0705699516b26e6cc71c741e05c56922378d1a0c608d8c399c

SHA512
484379fcf1f922c65e2bbd8ad204344fe11422e3f3bf6d5959b2d84c3efae0945a66175b86fd8daa8607f1189022d4cc9cb04752a275af724395a500c1bd6451

Download Submit
memory/2084-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2084-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2084-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2084-1-0x0000000002F30000-0x0000000003030000-memory.dmp

Filesize
1024KB

Download
memory/2536-13-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2604-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2604-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2604-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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