tofsee | 111c30438a1de702ec2c0b7ad1c0a000bde2f229964d3fe46142050e647243fd

Analysis

max time kernel
143s
max time network
128s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
28-01-2025 13:27

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General

Target

2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe
Size

11.3MB
MD5

8f4cc5d53c74381f6965e9e347365f0b
SHA1

c13e51d4f50ac41b639648641108afe915d9e945
SHA256

111c30438a1de702ec2c0b7ad1c0a000bde2f229964d3fe46142050e647243fd
SHA512

9e4978298b3e20dd8bfac43469cd2c1d98470c88f6347f268c7181957b713549434053dc20f5969f4a160947f931ac524e554fb31fda6a912da25929c40f7981
SSDEEP

49152:aqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPZ:aqtYc3k

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\exgbeskt = "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
2904	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\exgbeskt\ImagePath = "C:\\Windows\\SysWOW64\\exgbeskt\\rzosfdmm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
828	rzosfdmm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 828 set thread context of 2756	828	rzosfdmm.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2116	sc.exe
2928	sc.exe
2880	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	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_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	rzosfdmm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 2216	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	29
PID 3004 wrote to memory of 2216	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	29
PID 3004 wrote to memory of 2216	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	29
PID 3004 wrote to memory of 2216	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	29
PID 3004 wrote to memory of 2964	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	31
PID 3004 wrote to memory of 2964	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	31
PID 3004 wrote to memory of 2964	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	31
PID 3004 wrote to memory of 2964	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	31
PID 3004 wrote to memory of 2880	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	33
PID 3004 wrote to memory of 2880	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	33
PID 3004 wrote to memory of 2880	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	33
PID 3004 wrote to memory of 2880	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	33
PID 3004 wrote to memory of 2116	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	35
PID 3004 wrote to memory of 2116	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	35
PID 3004 wrote to memory of 2116	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	35
PID 3004 wrote to memory of 2116	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	35
PID 3004 wrote to memory of 2928	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	37
PID 3004 wrote to memory of 2928	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	37
PID 3004 wrote to memory of 2928	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	37
PID 3004 wrote to memory of 2928	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	37
PID 3004 wrote to memory of 2904	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	39
PID 3004 wrote to memory of 2904	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	39
PID 3004 wrote to memory of 2904	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	39
PID 3004 wrote to memory of 2904	3004	2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe	39
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42
PID 828 wrote to memory of 2756	828	rzosfdmm.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\exgbeskt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rzosfdmm.exe" C:\Windows\SysWOW64\exgbeskt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create exgbeskt binPath= "C:\Windows\SysWOW64\exgbeskt\rzosfdmm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description exgbeskt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start exgbeskt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- 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:2904

C:\Windows\SysWOW64\exgbeskt\rzosfdmm.exe
C:\Windows\SysWOW64\exgbeskt\rzosfdmm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_8f4cc5d53c74381f6965e9e347365f0b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:828
- 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:2756

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
11.0MB

MD5
b6afd7f940448db235f40131166f15b3

SHA1
e2290a5c73861077cb3fac02d9f26b34d8b72827

SHA256
20e206e9d1b1bf3b0f5645fa40f1daae1b2d986bfd4d530dce1babfe26128880

SHA512
98074853a1c6e486972d77198758db66872da429665c9e4fd1d1cc80a49367a809fab1fb740f3546b36ce0bab2a8fd9628aad4197345994e49dd5ef9fa7a258a

Download Submit
memory/828-16-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2756-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2756-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2756-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/3004-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3004-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3004-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3004-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3004-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads