tofsee | 77a9cba9f3c3051f71c90a4d498953be987602f4dc9bb5b2449a43c3272d1f2e

General

Target

2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe
Size

11.8MB
MD5

593ab1704817d65976eb215ca605963a
SHA1

f7b0316979e796492264845dfed3b2aa0542ecaf
SHA256

77a9cba9f3c3051f71c90a4d498953be987602f4dc9bb5b2449a43c3272d1f2e
SHA512

b262494d3d1c0094de0ba1cf2eec8d55abdb0fac2d14d3f1b7c69c0a561d179fc8e27a0fc9616d71636abd03a74ce618ec3fd92cc168833441ae91cbcd6d7984
SSDEEP

12288:nEMv9cfEtUy9UoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUoUP:n3usFK

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
2908	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\skdvpbuf\ImagePath = "C:\\Windows\\SysWOW64\\skdvpbuf\\qkkbmvmo.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-1-5-21-446031748-3036493239-2009529691-1000\Control Panel\International\Geo\Nation	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
5752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4876	qkkbmvmo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4876 set thread context of 5752	4876	qkkbmvmo.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
4524	sc.exe
4784	sc.exe
2840	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
5080	4292	WerFault.exe	85
5604	4876	WerFault.exe	102

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	qkkbmvmo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 2600	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4292 wrote to memory of 2600	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4292 wrote to memory of 2600	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4292 wrote to memory of 4508	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4292 wrote to memory of 4508	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4292 wrote to memory of 4508	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4292 wrote to memory of 4524	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	94
PID 4292 wrote to memory of 4524	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	94
PID 4292 wrote to memory of 4524	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	94
PID 4292 wrote to memory of 4784	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	98
PID 4292 wrote to memory of 4784	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	98
PID 4292 wrote to memory of 4784	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	98
PID 4292 wrote to memory of 2840	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	100
PID 4292 wrote to memory of 2840	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	100
PID 4292 wrote to memory of 2840	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	100
PID 4292 wrote to memory of 2908	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	104
PID 4292 wrote to memory of 2908	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	104
PID 4292 wrote to memory of 2908	4292	2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe	104
PID 4876 wrote to memory of 5752	4876	qkkbmvmo.exe	110
PID 4876 wrote to memory of 5752	4876	qkkbmvmo.exe	110
PID 4876 wrote to memory of 5752	4876	qkkbmvmo.exe	110
PID 4876 wrote to memory of 5752	4876	qkkbmvmo.exe	110
PID 4876 wrote to memory of 5752	4876	qkkbmvmo.exe	110

C:\Users\Admin\AppData\Local\Temp\2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\skdvpbuf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qkkbmvmo.exe" C:\Windows\SysWOW64\skdvpbuf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create skdvpbuf binPath= "C:\Windows\SysWOW64\skdvpbuf\qkkbmvmo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description skdvpbuf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start skdvpbuf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- 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:2908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 572
  2⤵
  - Program crash
  PID:5080

C:\Windows\SysWOW64\skdvpbuf\qkkbmvmo.exe
C:\Windows\SysWOW64\skdvpbuf\qkkbmvmo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_593ab1704817d65976eb215ca605963a_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 512
  2⤵
  - Program crash
  PID:5604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4292 -ip 4292
1⤵
PID:3364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4876 -ip 4876
1⤵
PID:5724

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\qkkbmvmo.exe

Filesize
10.0MB

MD5
00c70781663063272a94a49cae21d466

SHA1
3f73f3e9010b33a21f4e6ac9810a593da846f777

SHA256
2aa8e3529e4486d3ef145effe8e6f55dbfa2b233147184c7d0826c3fe9e54b32

SHA512
b781f3a398687d484e0020b69e983b5d62dbb0813d19b1e83dffafcd8cbd6367945cbb87ac1021931be0250769fde89ec83d7819f6cc379106194e6972f1847a

Download Submit
memory/4292-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4292-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4292-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4292-7-0x0000000000400000-0x0000000000864000-memory.dmp

Filesize
4.4MB

Download
memory/4292-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4292-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/4876-13-0x0000000000400000-0x0000000000864000-memory.dmp

Filesize
4.4MB

Download
memory/4876-12-0x0000000000400000-0x0000000000864000-memory.dmp

Filesize
4.4MB

Download
memory/4876-11-0x0000000000400000-0x0000000000864000-memory.dmp

Filesize
4.4MB

Download
memory/4876-18-0x0000000000400000-0x0000000000864000-memory.dmp

Filesize
4.4MB

Download
memory/5752-14-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/5752-16-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/5752-17-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads