tofsee | 9688c7d5badd6b10159c62fdda755356f1c6fa2458a7847b5e88c8d5b7430022

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 19:53

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General

Target

2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe
Size

10.1MB
MD5

3e21993f182d0b9a1caeb9aa39de7680
SHA1

b45f4fcbefb561ba533158831fb4401567cc8af5
SHA256

9688c7d5badd6b10159c62fdda755356f1c6fa2458a7847b5e88c8d5b7430022
SHA512

089d1c847cfcce4a5aa2396f769d887308a1fc993619066cce1cfb356ed382c79ed5268012700951a2877858a3b7579cc5cc301ab6dcda4809e3b51628e7bac2
SSDEEP

24576:rEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZR:4fot

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\gtytphva = "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
2792	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\gtytphva\ImagePath = "C:\\Windows\\SysWOW64\\gtytphva\\bjycpnww.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2700	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2264	bjycpnww.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2700	2264	bjycpnww.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
3012	sc.exe
2124	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	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	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_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	bjycpnww.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1728	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	30
PID 2304 wrote to memory of 1728	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	30
PID 2304 wrote to memory of 1728	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	30
PID 2304 wrote to memory of 1728	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	30
PID 2304 wrote to memory of 1204	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	32
PID 2304 wrote to memory of 1204	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	32
PID 2304 wrote to memory of 1204	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	32
PID 2304 wrote to memory of 1204	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	32
PID 2304 wrote to memory of 3012	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	34
PID 2304 wrote to memory of 3012	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	34
PID 2304 wrote to memory of 3012	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	34
PID 2304 wrote to memory of 3012	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	34
PID 2304 wrote to memory of 2124	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	36
PID 2304 wrote to memory of 2124	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	36
PID 2304 wrote to memory of 2124	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	36
PID 2304 wrote to memory of 2124	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	36
PID 2304 wrote to memory of 2880	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	38
PID 2304 wrote to memory of 2880	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	38
PID 2304 wrote to memory of 2880	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	38
PID 2304 wrote to memory of 2880	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	38
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2264 wrote to memory of 2700	2264	bjycpnww.exe	41
PID 2304 wrote to memory of 2792	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	42
PID 2304 wrote to memory of 2792	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	42
PID 2304 wrote to memory of 2792	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	42
PID 2304 wrote to memory of 2792	2304	2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gtytphva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bjycpnww.exe" C:\Windows\SysWOW64\gtytphva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gtytphva binPath= "C:\Windows\SysWOW64\gtytphva\bjycpnww.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gtytphva "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gtytphva
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- 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:2792

C:\Windows\SysWOW64\gtytphva\bjycpnww.exe
C:\Windows\SysWOW64\gtytphva\bjycpnww.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_3e21993f182d0b9a1caeb9aa39de7680_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- 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:2700

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\bjycpnww.exe

Filesize
13.4MB

MD5
c97c15bd0343a7248f7479da43265092

SHA1
611de83aeadfbb11b51418a2178254be4faa5e7f

SHA256
c7faefbeb83f367380ae239d5313a15e4c884f1b3dd5d2cc0e9676b27bade948

SHA512
c01f5d3ed0d0c0dae362ba305749bf2bca53ad4d057eb5cc7c26e66a92e6565bef33b43e34b879a50765fb80c68611d919cf4622136b295b6912dadb0094e84e

Download Submit
memory/2264-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2304-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2304-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2304-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/2304-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2700-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2700-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2700-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2700-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads