tofsee | cc9bf7bab2fa10c5b0cdf790586f29f15e3112bd6aa289a2175a1e5aca190993

Analysis

max time kernel
143s
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 19:17

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General

Target

2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe
Size

13.6MB
MD5

fe68e1702fa55d9c6125bbeb3026a5b8
SHA1

3a1cac180b422f57c7a1576baa3f16f09f6c7b7e
SHA256

cc9bf7bab2fa10c5b0cdf790586f29f15e3112bd6aa289a2175a1e5aca190993
SHA512

03dd144e41475bc9c51122571aa9c78304ea8d4b11c1b28d2028813c45392862d8608ac6aa2c21ecd17e4350730f462fc3fb25a4cb2516744e3a166ebf0e33a4
SSDEEP

24576:REfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZb:qfot

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\pyipdgen = "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
2828	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\pyipdgen\ImagePath = "C:\\Windows\\SysWOW64\\pyipdgen\\yyzkfgem.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2780	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	yyzkfgem.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 2780	2596	yyzkfgem.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2836	sc.exe
2900	sc.exe
2676	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	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.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
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	yyzkfgem.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2436	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	30
PID 3020 wrote to memory of 2436	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	30
PID 3020 wrote to memory of 2436	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	30
PID 3020 wrote to memory of 2436	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	30
PID 3020 wrote to memory of 2756	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	32
PID 3020 wrote to memory of 2756	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	32
PID 3020 wrote to memory of 2756	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	32
PID 3020 wrote to memory of 2756	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	32
PID 3020 wrote to memory of 2836	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	34
PID 3020 wrote to memory of 2836	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	34
PID 3020 wrote to memory of 2836	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	34
PID 3020 wrote to memory of 2836	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	34
PID 3020 wrote to memory of 2900	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	36
PID 3020 wrote to memory of 2900	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	36
PID 3020 wrote to memory of 2900	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	36
PID 3020 wrote to memory of 2900	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	36
PID 3020 wrote to memory of 2676	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	38
PID 3020 wrote to memory of 2676	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	38
PID 3020 wrote to memory of 2676	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	38
PID 3020 wrote to memory of 2676	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	38
PID 3020 wrote to memory of 2828	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	41
PID 3020 wrote to memory of 2828	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	41
PID 3020 wrote to memory of 2828	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	41
PID 3020 wrote to memory of 2828	3020	2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe	41
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43
PID 2596 wrote to memory of 2780	2596	yyzkfgem.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pyipdgen\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yyzkfgem.exe" C:\Windows\SysWOW64\pyipdgen\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pyipdgen binPath= "C:\Windows\SysWOW64\pyipdgen\yyzkfgem.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pyipdgen "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pyipdgen
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2676
- 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:2828

C:\Windows\SysWOW64\pyipdgen\yyzkfgem.exe
C:\Windows\SysWOW64\pyipdgen\yyzkfgem.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-24_fe68e1702fa55d9c6125bbeb3026a5b8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- 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:2780

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\yyzkfgem.exe

Filesize
11.4MB

MD5
f4cb1853ccb6068d15303ca0ac73a679

SHA1
aa9df21728a8c774617afe3b6edbf66c5da3f872

SHA256
99f9e31d0472cda2a7fe3c361bac3ca67469cc6cb50cf99f110f0389f8f234f2

SHA512
19c80ced9467fc593cf4f1c0f89e5f3975bfe7c1a7bf981c043b1f4c325116abdc96e454a21c83c9cfde39166f538eb380c3338b885296a50c77965007607a29

Download Submit
memory/2596-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2780-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2780-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2780-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3020-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3020-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3020-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3020-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3020-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3020-1-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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