tofsee | 38396fe1d46778fe0344d82c9eef5dcd77c43404e7c1ae2672eb9621063fbd8f

General

Target

2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe
Size

12.2MB
MD5

0a65504c9b8b4684d595eed0584d112f
SHA1

57dbb92e929274b256f6f7eb8df416167aff3fe4
SHA256

38396fe1d46778fe0344d82c9eef5dcd77c43404e7c1ae2672eb9621063fbd8f
SHA512

c4edc0cf56923927a508120aeabf6c773cad764027b3922e201c54424c161c7ee1ab2748efa506c88d7e9186eeeff169757705acf403797ac2a57f0199b9254c
SSDEEP

1536:Ilk/8YEhoSTyFsgYmjarCGl0xYNFP0Odb9qNbPVumgwXZNOBNiWSkstjOV2oKG1D:UKEp3GGlAUFPVAggeMmIwWjcHRJaEx

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
2184	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\zapjflsu\ImagePath = "C:\\Windows\\SysWOW64\\zapjflsu\\oqlrkxh.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
1408	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4360	oqlrkxh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4360 set thread context of 1408	4360	oqlrkxh.exe	113

Launches sc.exe 3 IoCs

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

pid	Process
4012	sc.exe
5328	sc.exe
6008	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5872	5404	WerFault.exe	85
4024	4360	WerFault.exe	105

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	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	oqlrkxh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5404 wrote to memory of 4880	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	90
PID 5404 wrote to memory of 4880	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	90
PID 5404 wrote to memory of 4880	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	90
PID 5404 wrote to memory of 4748	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	93
PID 5404 wrote to memory of 4748	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	93
PID 5404 wrote to memory of 4748	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	93
PID 5404 wrote to memory of 4012	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	96
PID 5404 wrote to memory of 4012	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	96
PID 5404 wrote to memory of 4012	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	96
PID 5404 wrote to memory of 5328	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	98
PID 5404 wrote to memory of 5328	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	98
PID 5404 wrote to memory of 5328	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	98
PID 5404 wrote to memory of 6008	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	103
PID 5404 wrote to memory of 6008	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	103
PID 5404 wrote to memory of 6008	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	103
PID 5404 wrote to memory of 2184	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	106
PID 5404 wrote to memory of 2184	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	106
PID 5404 wrote to memory of 2184	5404	2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe	106
PID 4360 wrote to memory of 1408	4360	oqlrkxh.exe	113
PID 4360 wrote to memory of 1408	4360	oqlrkxh.exe	113
PID 4360 wrote to memory of 1408	4360	oqlrkxh.exe	113
PID 4360 wrote to memory of 1408	4360	oqlrkxh.exe	113
PID 4360 wrote to memory of 1408	4360	oqlrkxh.exe	113

C:\Users\Admin\AppData\Local\Temp\2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zapjflsu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oqlrkxh.exe" C:\Windows\SysWOW64\zapjflsu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zapjflsu binPath= "C:\Windows\SysWOW64\zapjflsu\oqlrkxh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zapjflsu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zapjflsu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:6008
- 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:2184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5404 -s 660
  2⤵
  - Program crash
  PID:5872

C:\Windows\SysWOW64\zapjflsu\oqlrkxh.exe
C:\Windows\SysWOW64\zapjflsu\oqlrkxh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_0a65504c9b8b4684d595eed0584d112f_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4360 -s 560
  2⤵
  - Program crash
  PID:4024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5404 -ip 5404
1⤵
PID:3900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4360 -ip 4360
1⤵
PID:1120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\oqlrkxh.exe

Filesize
12.4MB

MD5
be32e74f8a968790504bbc47e724caf9

SHA1
f4a43be77d67ba55d96723755b322ed513d92f5f

SHA256
a65bc054045f9e454c8f32d6a83de8e62f4591b153d6cf5f3b2a2f468ec85a23

SHA512
dcdb41906ccc42b50af8c10a57a69add3efd3293b55f63d2d4d9a0c21b81fd6463f7b61e9f4c40b67ea88f9269ff4a5196ec22b581a835844125bf17240f0e31

Download Submit
memory/1408-11-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/1408-13-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/1408-14-0x0000000000730000-0x0000000000745000-memory.dmp

Filesize
84KB

Download
memory/4360-15-0x0000000000400000-0x00000000008B6000-memory.dmp

Filesize
4.7MB

Download
memory/5404-1-0x0000000000B20000-0x0000000000C20000-memory.dmp

Filesize
1024KB

Download
memory/5404-2-0x0000000000900000-0x0000000000913000-memory.dmp

Filesize
76KB

Download
memory/5404-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5404-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5404-8-0x0000000000900000-0x0000000000913000-memory.dmp

Filesize
76KB

Download
memory/5404-7-0x0000000000400000-0x00000000008B6000-memory.dmp

Filesize
4.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads