tofsee | 35bc3d4b58223b892a1e97468a1a201d70313fb8eb0493fd8dc84d4676220b57

Analysis

max time kernel
145s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:13

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General

Target

2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe
Size

10.6MB
MD5

1af7c14f03c0f97e84866762d3975796
SHA1

7049d730600dc4e28a8859e835d701e365d0e83a
SHA256

35bc3d4b58223b892a1e97468a1a201d70313fb8eb0493fd8dc84d4676220b57
SHA512

07f3300958da25fbb02d2e51887fc0cf9b8b578d24cd4de1b6d524b2ad3380d91728dd16d618a2c19992753b2df795e77caf4b2fb59d3e9336ab33a053992324
SSDEEP

6144:T7aBkOsUh6TFWAbjG+jTD7fksRUrz8KFxVsGEp:a3sUhfAvGETD7f2XhFDstp

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\kljpcoti = "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
2604	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\kljpcoti\ImagePath = "C:\\Windows\\SysWOW64\\kljpcoti\\wvjlzwxp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	wvjlzwxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2696 set thread context of 2640	2696	wvjlzwxp.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
592	sc.exe
2180	sc.exe
2628	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	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	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wvjlzwxp.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 2904	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	31
PID 1552 wrote to memory of 2904	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	31
PID 1552 wrote to memory of 2904	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	31
PID 1552 wrote to memory of 2904	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	31
PID 1552 wrote to memory of 2976	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	33
PID 1552 wrote to memory of 2976	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	33
PID 1552 wrote to memory of 2976	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	33
PID 1552 wrote to memory of 2976	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	33
PID 1552 wrote to memory of 592	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	35
PID 1552 wrote to memory of 592	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	35
PID 1552 wrote to memory of 592	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	35
PID 1552 wrote to memory of 592	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	35
PID 1552 wrote to memory of 2180	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	37
PID 1552 wrote to memory of 2180	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	37
PID 1552 wrote to memory of 2180	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	37
PID 1552 wrote to memory of 2180	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	37
PID 1552 wrote to memory of 2628	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	39
PID 1552 wrote to memory of 2628	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	39
PID 1552 wrote to memory of 2628	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	39
PID 1552 wrote to memory of 2628	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	39
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 2696 wrote to memory of 2640	2696	wvjlzwxp.exe	42
PID 1552 wrote to memory of 2604	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	43
PID 1552 wrote to memory of 2604	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	43
PID 1552 wrote to memory of 2604	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	43
PID 1552 wrote to memory of 2604	1552	2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kljpcoti\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wvjlzwxp.exe" C:\Windows\SysWOW64\kljpcoti\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kljpcoti binPath= "C:\Windows\SysWOW64\kljpcoti\wvjlzwxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kljpcoti "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kljpcoti
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- 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:2604

C:\Windows\SysWOW64\kljpcoti\wvjlzwxp.exe
C:\Windows\SysWOW64\kljpcoti\wvjlzwxp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1af7c14f03c0f97e84866762d3975796_amadey_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696
- 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:2640

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\wvjlzwxp.exe

Filesize
15.0MB

MD5
354024c3d3f544db8594af2c97bcc3f4

SHA1
95d9336ad16df814da6b3e818b767cb01f3031b2

SHA256
b1840b9d41e503762d700f131c96e4cec5699097be8d01612bea235292ccd991

SHA512
396cb78c67f5ae38e9bb8ff384480ea81232862559ac301b78818acf9338fec01fe925aa600c0f1f24404cccf15d7d1fd62dca820f681e27b73b33be5340bb23

Download Submit
memory/1552-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1552-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1552-3-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1552-16-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/1552-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/1552-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2640-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2696-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads