tofsee | 59adc29c36b4fe6397d3cc5775a4e03d7e2b742b6d1a0098bde923fb4fd0f1d5

General

Target

2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe
Size

14.9MB
MD5

140724e31efe84d03da9d16ee917968d
SHA1

14262a92031708484db3e8178d830a3fa4644d97
SHA256

59adc29c36b4fe6397d3cc5775a4e03d7e2b742b6d1a0098bde923fb4fd0f1d5
SHA512

104b910802e60b95b34a9150446c07c9b1bd805325263a9b084c9b95beb9ada7659c574cb9a950ebc268368d5229d11652be35c15f871bc1fcf643506f44bc98
SSDEEP

3072:X/IS72NPLnCwVm85Vuv63c7sVvuFImzMWcdUf87sIHtU1d:ASIPuS3c7sSzMZdnQc6d

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
4192	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\chvscfka\ImagePath = "C:\\Windows\\SysWOW64\\chvscfka\\jlepwesi.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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
3928	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4756	jlepwesi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4756 set thread context of 3928	4756	jlepwesi.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4504	sc.exe
1928	sc.exe
4364	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2712	4756	WerFault.exe	101
2984	1760	WerFault.exe	86

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jlepwesi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_140724e31efe84d03da9d16ee917968d_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	cmd.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 3164	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	89
PID 1760 wrote to memory of 3164	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	89
PID 1760 wrote to memory of 3164	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	89
PID 1760 wrote to memory of 4228	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	92
PID 1760 wrote to memory of 4228	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	92
PID 1760 wrote to memory of 4228	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	92
PID 1760 wrote to memory of 4504	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	95
PID 1760 wrote to memory of 4504	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	95
PID 1760 wrote to memory of 4504	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	95
PID 1760 wrote to memory of 1928	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	97
PID 1760 wrote to memory of 1928	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	97
PID 1760 wrote to memory of 1928	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	97
PID 1760 wrote to memory of 4364	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	99
PID 1760 wrote to memory of 4364	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	99
PID 1760 wrote to memory of 4364	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	99
PID 4756 wrote to memory of 3928	4756	jlepwesi.exe	102
PID 4756 wrote to memory of 3928	4756	jlepwesi.exe	102
PID 4756 wrote to memory of 3928	4756	jlepwesi.exe	102
PID 4756 wrote to memory of 3928	4756	jlepwesi.exe	102
PID 4756 wrote to memory of 3928	4756	jlepwesi.exe	102
PID 1760 wrote to memory of 4192	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	104
PID 1760 wrote to memory of 4192	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	104
PID 1760 wrote to memory of 4192	1760	2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe	104

C:\Users\Admin\AppData\Local\Temp\2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chvscfka\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jlepwesi.exe" C:\Windows\SysWOW64\chvscfka\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create chvscfka binPath= "C:\Windows\SysWOW64\chvscfka\jlepwesi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description chvscfka "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start chvscfka
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4364
- 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:4192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 1036
  2⤵
  - Program crash
  PID:2984

C:\Windows\SysWOW64\chvscfka\jlepwesi.exe
C:\Windows\SysWOW64\chvscfka\jlepwesi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_140724e31efe84d03da9d16ee917968d_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 516
  2⤵
  - Program crash
  PID:2712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1760 -ip 1760
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4756 -ip 4756
1⤵
PID:1940

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\jlepwesi.exe

Filesize
12.4MB

MD5
ec176b6dee8002b237e066c6c3de086e

SHA1
ebec9ae08277f6b71b294a70a835ce187af42ec3

SHA256
91d2b644524c05f0b1dd938766d70fd6ea324c263a16669ac25abbe08a2f5f47

SHA512
e16590c67cd30d478bb23c1995db9d078ad2cdeec6ac4986c714cbab4625bd0587b51e0c50861d202cb09f26051c18f95ed497f3b17ecd72f111808ca3fe827a

Download Submit
memory/1760-1-0x0000000006ED0000-0x0000000006FD0000-memory.dmp

Filesize
1024KB

Download
memory/1760-2-0x0000000006EB0000-0x0000000006EC3000-memory.dmp

Filesize
76KB

Download
memory/1760-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1760-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1760-12-0x0000000006EB0000-0x0000000006EC3000-memory.dmp

Filesize
76KB

Download
memory/1760-11-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/3928-8-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/3928-14-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/3928-15-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/4756-10-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads