tofsee | cd12838db17575f7757eb986e5fd2bda7564ee35032d081cde07b08db2b5821a

General

Target

2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe
Size

12.3MB
MD5

b6a366b02ea728c0fe7edef0b63050f9
SHA1

663907e804b49e19d7812707767b1b738883cd83
SHA256

cd12838db17575f7757eb986e5fd2bda7564ee35032d081cde07b08db2b5821a
SHA512

2d9c328421b7d9f236ccbfe8d81a66a9824d57353aadfde57a501b41b98df840e8025575ffee09e8708b05ca7f23e19084ca8ca5b86abc3c07edb0f173f0d1b6
SSDEEP

6144:q3PxF2dnDX4THRDbw4f4aiKCxRotUPRLI+HGbt4z:q3zub4THRDbnf50xutUP5+iz

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
4828	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\hrjdaouw\ImagePath = "C:\\Windows\\SysWOW64\\hrjdaouw\\kgyyvkjx.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	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
4292	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	kgyyvkjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4932 set thread context of 4292	4932	kgyyvkjx.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4740	sc.exe
1504	sc.exe
5648	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
2148	5640	WerFault.exe	85
5192	4932	WerFault.exe	100

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	kgyyvkjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5640 wrote to memory of 2468	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	88
PID 5640 wrote to memory of 2468	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	88
PID 5640 wrote to memory of 2468	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	88
PID 5640 wrote to memory of 3712	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	91
PID 5640 wrote to memory of 3712	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	91
PID 5640 wrote to memory of 3712	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	91
PID 5640 wrote to memory of 5648	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	93
PID 5640 wrote to memory of 5648	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	93
PID 5640 wrote to memory of 5648	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	93
PID 5640 wrote to memory of 4740	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	95
PID 5640 wrote to memory of 4740	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	95
PID 5640 wrote to memory of 4740	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	95
PID 5640 wrote to memory of 1504	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	98
PID 5640 wrote to memory of 1504	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	98
PID 5640 wrote to memory of 1504	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	98
PID 5640 wrote to memory of 4828	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	102
PID 5640 wrote to memory of 4828	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	102
PID 5640 wrote to memory of 4828	5640	2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe	102
PID 4932 wrote to memory of 4292	4932	kgyyvkjx.exe	107
PID 4932 wrote to memory of 4292	4932	kgyyvkjx.exe	107
PID 4932 wrote to memory of 4292	4932	kgyyvkjx.exe	107
PID 4932 wrote to memory of 4292	4932	kgyyvkjx.exe	107
PID 4932 wrote to memory of 4292	4932	kgyyvkjx.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hrjdaouw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kgyyvkjx.exe" C:\Windows\SysWOW64\hrjdaouw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hrjdaouw binPath= "C:\Windows\SysWOW64\hrjdaouw\kgyyvkjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hrjdaouw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hrjdaouw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1504
- 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:4828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5640 -s 676
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\hrjdaouw\kgyyvkjx.exe
C:\Windows\SysWOW64\hrjdaouw\kgyyvkjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b6a366b02ea728c0fe7edef0b63050f9_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 512
  2⤵
  - Program crash
  PID:5192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5640 -ip 5640
1⤵
PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4932 -ip 4932
1⤵
PID:4280

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\kgyyvkjx.exe

Filesize
12.8MB

MD5
eabf9b74b8488c58e524e3fb99a66218

SHA1
30a4a6524d4fab797f20cb721693ac4ab7c40696

SHA256
852fb41c373500e3dcf2b51ad994fe3eb71abde786851caeab1bb1eb1b1a573a

SHA512
ea9742a7528558d60459170bb11a7969dd5585f0e5210446f6f68a6a2d43c0713c08949a2cfa9316f1000be428ba1427c2de120884f279d04db27c69379ccc5b

Download Submit
memory/4292-10-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4292-13-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4292-21-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4292-20-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4292-19-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4932-15-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4932-9-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4932-8-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5640-1-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/5640-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5640-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5640-17-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5640-16-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5640-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads