tofsee | 83fcc1ada2ba29218388ebae476780e2d1b60ce6123bffbdca8398688fe037d1

General

Target

2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe
Size

10.6MB
MD5

437f4774772119f35bb3028350385af6
SHA1

1cf78bdcdb449015f41ca0d6e7fc32081591cec4
SHA256

83fcc1ada2ba29218388ebae476780e2d1b60ce6123bffbdca8398688fe037d1
SHA512

58831d413e37cae3ca24f5588390c0ff9eb3ea56207a0615d6c436c00a89bd1cf6117ffeaab718b7d98a947982c60764a2b88ed3ef6b77256adc77a6908f65a6
SSDEEP

3072:cCLVCtykRk5Kws3LQfNeBVe/KyNDrr91m:/eyki5KnUfNeBVe/E

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
624	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\gofkplpu\ImagePath = "C:\\Windows\\SysWOW64\\gofkplpu\\xvefokzv.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	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
1904	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	xvefokzv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 1904	4548	xvefokzv.exe	111

Launches sc.exe 3 IoCs

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

pid	Process
3944	sc.exe
4920	sc.exe
876	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
2536	4788	WerFault.exe	85
4984	4548	WerFault.exe	105

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	xvefokzv.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 1776	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	89
PID 4788 wrote to memory of 1776	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	89
PID 4788 wrote to memory of 1776	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	89
PID 4788 wrote to memory of 3980	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	94
PID 4788 wrote to memory of 3980	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	94
PID 4788 wrote to memory of 3980	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	94
PID 4788 wrote to memory of 876	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	96
PID 4788 wrote to memory of 876	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	96
PID 4788 wrote to memory of 876	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	96
PID 4788 wrote to memory of 3944	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	100
PID 4788 wrote to memory of 3944	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	100
PID 4788 wrote to memory of 3944	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	100
PID 4788 wrote to memory of 4920	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	103
PID 4788 wrote to memory of 4920	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	103
PID 4788 wrote to memory of 4920	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	103
PID 4788 wrote to memory of 624	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	106
PID 4788 wrote to memory of 624	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	106
PID 4788 wrote to memory of 624	4788	2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe	106
PID 4548 wrote to memory of 1904	4548	xvefokzv.exe	111
PID 4548 wrote to memory of 1904	4548	xvefokzv.exe	111
PID 4548 wrote to memory of 1904	4548	xvefokzv.exe	111
PID 4548 wrote to memory of 1904	4548	xvefokzv.exe	111
PID 4548 wrote to memory of 1904	4548	xvefokzv.exe	111

C:\Users\Admin\AppData\Local\Temp\2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gofkplpu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1776
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xvefokzv.exe" C:\Windows\SysWOW64\gofkplpu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3980
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gofkplpu binPath= "C:\Windows\SysWOW64\gofkplpu\xvefokzv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gofkplpu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gofkplpu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4920
- 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:624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4788 -s 1260
  2⤵
  - Program crash
  PID:2536

C:\Windows\SysWOW64\gofkplpu\xvefokzv.exe
C:\Windows\SysWOW64\gofkplpu\xvefokzv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_437f4774772119f35bb3028350385af6_amadey_rhadamanthys_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 508
  2⤵
  - Program crash
  PID:4984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4788 -ip 4788
1⤵
PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4548 -ip 4548
1⤵
PID:5072

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\xvefokzv.exe

Filesize
10.8MB

MD5
2fae0e9dcd4f5bba53462c67e0433392

SHA1
3327a019f4fcc37082f1b88e20299413ab4bb8c9

SHA256
0e1e54967f33354bd7097694777e99880af5afd3590475effdc76a8b40f28683

SHA512
e17a208094521b3d61459d8ed7a038fb6392d97569de5661c3b9c4f4a20699d6f5bdfe0d583ce21756ffe9bf24d459dcbc4e88540f67f3f5fabae85c636857f5

Download Submit
memory/1904-11-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/1904-13-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/1904-14-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/4548-15-0x0000000000400000-0x0000000004A92000-memory.dmp

Filesize
70.6MB

Download
memory/4788-1-0x0000000004CB0000-0x0000000004DB0000-memory.dmp

Filesize
1024KB

Download
memory/4788-2-0x0000000004BB0000-0x0000000004BC3000-memory.dmp

Filesize
76KB

Download
memory/4788-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4788-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4788-8-0x0000000004BB0000-0x0000000004BC3000-memory.dmp

Filesize
76KB

Download
memory/4788-7-0x0000000000400000-0x0000000004A92000-memory.dmp

Filesize
70.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads