tofsee | 2e27b402a19db959fac5b96e42dc07d6249d22f929c34af2fe21b36b1343304e

General

Target

2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe
Size

12.8MB
MD5

b3fe57536752c8d7d2448db15f67da9a
SHA1

a13fc2dde7e38c376d31112c7e1667cc94a1ce5b
SHA256

2e27b402a19db959fac5b96e42dc07d6249d22f929c34af2fe21b36b1343304e
SHA512

76a0d2acd265ecd1ac73a6b234b4e8a7f6087977982657b31023f84e3dcfbb499a9ed52972e19bb63e1ae1991a511b122b0a343c91dfe005b90a07816fa50d33
SSDEEP

24576:6PQuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuz:

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
4748	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\kggujjuy\ImagePath = "C:\\Windows\\SysWOW64\\kggujjuy\\ckzdqoxx.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_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
4672	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4600	ckzdqoxx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4600 set thread context of 4672	4600	ckzdqoxx.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4496	sc.exe
5452	sc.exe
5996	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
1868	4600	WerFault.exe	101
1796	4532	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_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	ckzdqoxx.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 5252	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4532 wrote to memory of 5252	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4532 wrote to memory of 5252	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	89
PID 4532 wrote to memory of 4608	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4532 wrote to memory of 4608	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4532 wrote to memory of 4608	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	91
PID 4532 wrote to memory of 4496	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	93
PID 4532 wrote to memory of 4496	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	93
PID 4532 wrote to memory of 4496	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	93
PID 4532 wrote to memory of 5452	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	95
PID 4532 wrote to memory of 5452	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	95
PID 4532 wrote to memory of 5452	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	95
PID 4532 wrote to memory of 5996	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	99
PID 4532 wrote to memory of 5996	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	99
PID 4532 wrote to memory of 5996	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	99
PID 4532 wrote to memory of 4748	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	102
PID 4532 wrote to memory of 4748	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	102
PID 4532 wrote to memory of 4748	4532	2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe	102
PID 4600 wrote to memory of 4672	4600	ckzdqoxx.exe	105
PID 4600 wrote to memory of 4672	4600	ckzdqoxx.exe	105
PID 4600 wrote to memory of 4672	4600	ckzdqoxx.exe	105
PID 4600 wrote to memory of 4672	4600	ckzdqoxx.exe	105
PID 4600 wrote to memory of 4672	4600	ckzdqoxx.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kggujjuy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ckzdqoxx.exe" C:\Windows\SysWOW64\kggujjuy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kggujjuy binPath= "C:\Windows\SysWOW64\kggujjuy\ckzdqoxx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kggujjuy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kggujjuy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5996
- 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:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4532 -s 1036
  2⤵
  - Program crash
  PID:1796

C:\Windows\SysWOW64\kggujjuy\ckzdqoxx.exe
C:\Windows\SysWOW64\kggujjuy\ckzdqoxx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_b3fe57536752c8d7d2448db15f67da9a_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 512
  2⤵
  - Program crash
  PID:1868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4600 -ip 4600
1⤵
PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4532 -ip 4532
1⤵
PID:832

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\ckzdqoxx.exe

Filesize
13.6MB

MD5
d39b3b94cf2de275097dfc40b8a5a472

SHA1
a3278e213b4d1e1ebef6d4f3dc6b15462e67dd88

SHA256
28c825178f9130aa3e5391c0036a8fe26695285fab3653f4e8d680f3b3ecb6dd

SHA512
4576a8a40a76fa0c67f206ab2f34f23e8af476e85649c43115880cb62a0b094983b1841cbefcea379b2298dc6863ddd2ae1f6099175cc75b5adcabfcfdebaccc

Download Submit
memory/4532-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4532-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4532-2-0x00000000009D0000-0x00000000009E3000-memory.dmp

Filesize
76KB

Download
memory/4532-16-0x0000000000400000-0x00000000008A2000-memory.dmp

Filesize
4.6MB

Download
memory/4532-17-0x00000000009D0000-0x00000000009E3000-memory.dmp

Filesize
76KB

Download
memory/4532-1-0x0000000000A30000-0x0000000000B30000-memory.dmp

Filesize
1024KB

Download
memory/4600-15-0x0000000000400000-0x00000000008A2000-memory.dmp

Filesize
4.6MB

Download
memory/4600-9-0x0000000000400000-0x00000000008A2000-memory.dmp

Filesize
4.6MB

Download
memory/4600-8-0x0000000000400000-0x00000000008A2000-memory.dmp

Filesize
4.6MB

Download
memory/4672-13-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/4672-10-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/4672-19-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/4672-20-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/4672-21-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads