tofsee | f04e4fe10026a1970e62a30ef648aa4de8654c0ff76305cb699c866a630ba82b

General

Target

2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe
Size

13.0MB
MD5

4dafc0d8a7860dad94132ac11c4c1445
SHA1

0eed1fa871a79defe25949a4ac45e3dd6c82ea1f
SHA256

f04e4fe10026a1970e62a30ef648aa4de8654c0ff76305cb699c866a630ba82b
SHA512

5248a1e14274d28ac7f0f5db121367d80dc3b4f10c8430e13a7bf1090bf061aab1541fb831bcdc65c827202b71ab19d774e8792adc97af957021e8e1a5ae22fe
SSDEEP

6144:D1wVpPJkxqmy+qzSbEnBds2UHM5wdo952N1fqHnVO9lzXXXXXXXXXXXXXXXXXXXr:IP6ot5zVng2UHMeOczX

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
4440	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\sjztescg\ImagePath = "C:\\Windows\\SysWOW64\\sjztescg\\eefqlmks.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-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
1528	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4636	eefqlmks.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4636 set thread context of 1528	4636	eefqlmks.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2160	sc.exe
3624	sc.exe
116	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
4620	3684	WerFault.exe	86
2744	4636	WerFault.exe	104

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	eefqlmks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3684 wrote to memory of 4820	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	89
PID 3684 wrote to memory of 4820	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	89
PID 3684 wrote to memory of 4820	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	89
PID 3684 wrote to memory of 3700	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	92
PID 3684 wrote to memory of 3700	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	92
PID 3684 wrote to memory of 3700	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	92
PID 3684 wrote to memory of 2160	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	96
PID 3684 wrote to memory of 2160	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	96
PID 3684 wrote to memory of 2160	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	96
PID 3684 wrote to memory of 3624	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	98
PID 3684 wrote to memory of 3624	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	98
PID 3684 wrote to memory of 3624	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	98
PID 3684 wrote to memory of 116	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	102
PID 3684 wrote to memory of 116	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	102
PID 3684 wrote to memory of 116	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	102
PID 4636 wrote to memory of 1528	4636	eefqlmks.exe	105
PID 4636 wrote to memory of 1528	4636	eefqlmks.exe	105
PID 4636 wrote to memory of 1528	4636	eefqlmks.exe	105
PID 4636 wrote to memory of 1528	4636	eefqlmks.exe	105
PID 4636 wrote to memory of 1528	4636	eefqlmks.exe	105
PID 3684 wrote to memory of 4440	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	108
PID 3684 wrote to memory of 4440	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	108
PID 3684 wrote to memory of 4440	3684	2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sjztescg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe" C:\Windows\SysWOW64\sjztescg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sjztescg binPath= "C:\Windows\SysWOW64\sjztescg\eefqlmks.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sjztescg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sjztescg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:116
- 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:4440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3684 -s 1232
  2⤵
  - Program crash
  PID:4620

C:\Windows\SysWOW64\sjztescg\eefqlmks.exe
C:\Windows\SysWOW64\sjztescg\eefqlmks.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-28_4dafc0d8a7860dad94132ac11c4c1445_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 508
  2⤵
  - Program crash
  PID:2744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4636 -ip 4636
1⤵
PID:392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3684 -ip 3684
1⤵
PID:4936

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\eefqlmks.exe

Filesize
13.3MB

MD5
89a7d9ce230d1d3559d63dcb4b14d4c5

SHA1
a96bb03f41b490391644421b859c3440f1c34896

SHA256
76f85b5b2f9436c2b2698c0c9403d0b5ca86df9a0dbe0e8b56c738669a40511c

SHA512
f5d2f9b82947b7ca59e28a40075a1964ab176328cd32f1bb9db9f04c3899a20fab59d1cfe446ba657affae0fcdd13edc4936b91ff67ee7e79b46ae0a0f1e5521

Download Submit
memory/1528-14-0x0000000000430000-0x0000000000445000-memory.dmp

Filesize
84KB

Download
memory/1528-21-0x0000000000430000-0x0000000000445000-memory.dmp

Filesize
84KB

Download
memory/1528-20-0x0000000000430000-0x0000000000445000-memory.dmp

Filesize
84KB

Download
memory/1528-9-0x0000000000430000-0x0000000000445000-memory.dmp

Filesize
84KB

Download
memory/1528-19-0x0000000000430000-0x0000000000445000-memory.dmp

Filesize
84KB

Download
memory/3684-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3684-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3684-17-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3684-16-0x0000000000400000-0x0000000000939000-memory.dmp

Filesize
5.2MB

Download
memory/3684-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3684-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/4636-12-0x0000000000400000-0x0000000000939000-memory.dmp

Filesize
5.2MB

Download
memory/4636-13-0x0000000000400000-0x0000000000939000-memory.dmp

Filesize
5.2MB

Download
memory/4636-8-0x0000000000400000-0x0000000000939000-memory.dmp

Filesize
5.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads