tofsee | acd14cb5c52a0a884e5c2fb8f58661294cbc487c3d77b533f28e6d69e0cae07d

General

Target

2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe
Size

14.6MB
MD5

5716d783576647769cb631aa50473982
SHA1

bf2e4f602ebcc16926eacbf3c9b9f26bab62d6f4
SHA256

acd14cb5c52a0a884e5c2fb8f58661294cbc487c3d77b533f28e6d69e0cae07d
SHA512

9db45db8595cb4afbd98eb73a3bdd94d50579d93ec6f271b5376525786d21f91079a8d1af1a6a7a7a18a96f9be2bb4c43f37963cc1101eaf533a24c9969a6b0a
SSDEEP

6144:x3PxF2dnDX4THRDbw4f4aiKCxRotUPRLI+HGbt4zl:x3zub4THRDbnf50xutUP5+izl

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
5572	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\zgxlrerm\ImagePath = "C:\\Windows\\SysWOW64\\zgxlrerm\\uthjxuvn.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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
5420	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4980	uthjxuvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4980 set thread context of 5420	4980	uthjxuvn.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4644	sc.exe
4772	sc.exe
4732	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2008	4980	WerFault.exe	101
3084	2260	WerFault.exe	85

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_5716d783576647769cb631aa50473982_amadey_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	uthjxuvn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 5620	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	89
PID 2260 wrote to memory of 5620	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	89
PID 2260 wrote to memory of 5620	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	89
PID 2260 wrote to memory of 4568	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	91
PID 2260 wrote to memory of 4568	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	91
PID 2260 wrote to memory of 4568	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	91
PID 2260 wrote to memory of 4732	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	93
PID 2260 wrote to memory of 4732	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	93
PID 2260 wrote to memory of 4732	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	93
PID 2260 wrote to memory of 4644	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	95
PID 2260 wrote to memory of 4644	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	95
PID 2260 wrote to memory of 4644	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	95
PID 2260 wrote to memory of 4772	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	99
PID 2260 wrote to memory of 4772	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	99
PID 2260 wrote to memory of 4772	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	99
PID 2260 wrote to memory of 5572	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	102
PID 2260 wrote to memory of 5572	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	102
PID 2260 wrote to memory of 5572	2260	2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe	102
PID 4980 wrote to memory of 5420	4980	uthjxuvn.exe	105
PID 4980 wrote to memory of 5420	4980	uthjxuvn.exe	105
PID 4980 wrote to memory of 5420	4980	uthjxuvn.exe	105
PID 4980 wrote to memory of 5420	4980	uthjxuvn.exe	105
PID 4980 wrote to memory of 5420	4980	uthjxuvn.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zgxlrerm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uthjxuvn.exe" C:\Windows\SysWOW64\zgxlrerm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zgxlrerm binPath= "C:\Windows\SysWOW64\zgxlrerm\uthjxuvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zgxlrerm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zgxlrerm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4772
- 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:5572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2260 -s 580
  2⤵
  - Program crash
  PID:3084

C:\Windows\SysWOW64\zgxlrerm\uthjxuvn.exe
C:\Windows\SysWOW64\zgxlrerm\uthjxuvn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_5716d783576647769cb631aa50473982_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4980 -s 512
  2⤵
  - Program crash
  PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2260 -ip 2260
1⤵
PID:3584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4980 -ip 4980
1⤵
PID:2416

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\uthjxuvn.exe

Filesize
10.6MB

MD5
34cf1d1599baf3fff7c8d1c7f4f8a3d0

SHA1
5aeec753ac7f183dd33a061bec9f01e2e482bde5

SHA256
92bf67c029f5f4838b84743ecdd962711328adfa89acff5626c6779a148e240f

SHA512
932dfe960899ec805c1d2b7e9d9a88d95b69807890fef0899343fa6c951c65e0ac8af0e4dc11c8a3676ecd2c305ac9439ff7fc6eb9784effb2fe1cb74b9966f0

Download Submit
memory/2260-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2260-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2260-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2260-1-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/2260-18-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2260-17-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4980-9-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4980-16-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4980-10-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4980-8-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5420-14-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/5420-11-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/5420-20-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/5420-21-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/5420-22-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads