tofsee | d788c1e407850e1e7cbc1f8778e1d7c185befbecb489e106e4f878f5cdade172

General

Target

2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe
Size

10.4MB
MD5

1c526771bead2c837c2e2b3245404b92
SHA1

0975ea6c1d375b7442c1e3ac8471437e29bb68a7
SHA256

d788c1e407850e1e7cbc1f8778e1d7c185befbecb489e106e4f878f5cdade172
SHA512

e76528ba555fea7a39d93fca6ff17c80576f0c4abb205c4c55b2ff04221e126fa5c0540d5f8af9ce96b6b48158391b2d23249bcee769ff25751ab2b7181fed0c
SSDEEP

12288:Hr7yOp3qzyEw777777777777777777777777777777777777777777777777777k:XyOp3XEL

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
3692	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\sslmumqj\ImagePath = "C:\\Windows\\SysWOW64\\sslmumqj\\qmeebqpd.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-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe

Deletes itself 1 IoCs

pid	Process
4744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
6056	qmeebqpd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 6056 set thread context of 4744	6056	qmeebqpd.exe	114

Launches sc.exe 3 IoCs

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

pid	Process
2376	sc.exe
3672	sc.exe
5724	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
1916	3992	WerFault.exe	85
5812	6056	WerFault.exe	106

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	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.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	qmeebqpd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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 3992 wrote to memory of 1604	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	96
PID 3992 wrote to memory of 1604	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	96
PID 3992 wrote to memory of 1604	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	96
PID 3992 wrote to memory of 880	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	98
PID 3992 wrote to memory of 880	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	98
PID 3992 wrote to memory of 880	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	98
PID 3992 wrote to memory of 2376	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	100
PID 3992 wrote to memory of 2376	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	100
PID 3992 wrote to memory of 2376	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	100
PID 3992 wrote to memory of 3672	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	102
PID 3992 wrote to memory of 3672	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	102
PID 3992 wrote to memory of 3672	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	102
PID 3992 wrote to memory of 5724	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	104
PID 3992 wrote to memory of 5724	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	104
PID 3992 wrote to memory of 5724	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	104
PID 3992 wrote to memory of 3692	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	107
PID 3992 wrote to memory of 3692	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	107
PID 3992 wrote to memory of 3692	3992	2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe	107
PID 6056 wrote to memory of 4744	6056	qmeebqpd.exe	114
PID 6056 wrote to memory of 4744	6056	qmeebqpd.exe	114
PID 6056 wrote to memory of 4744	6056	qmeebqpd.exe	114
PID 6056 wrote to memory of 4744	6056	qmeebqpd.exe	114
PID 6056 wrote to memory of 4744	6056	qmeebqpd.exe	114

C:\Users\Admin\AppData\Local\Temp\2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sslmumqj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qmeebqpd.exe" C:\Windows\SysWOW64\sslmumqj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sslmumqj binPath= "C:\Windows\SysWOW64\sslmumqj\qmeebqpd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sslmumqj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sslmumqj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5724
- 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:3692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3992 -s 1044
  2⤵
  - Program crash
  PID:1916

C:\Windows\SysWOW64\sslmumqj\qmeebqpd.exe
C:\Windows\SysWOW64\sslmumqj\qmeebqpd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1c526771bead2c837c2e2b3245404b92_black-basta_luca-stealer_smoke-loader.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6056
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 6056 -s 532
  2⤵
  - Program crash
  PID:5812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3992 -ip 3992
1⤵
PID:2540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 6056 -ip 6056
1⤵
PID:5768

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\qmeebqpd.exe

Filesize
10.6MB

MD5
cec8747f1f8d0a6d898e9a8025c40281

SHA1
5fd55300b50a10eee10d56198a5cf3865d4a6fd9

SHA256
d83a3779902df4d952b86b7cae0404d5d6a58bdfad9b36a125b67425409cc375

SHA512
ce8cb0ef4eb80066c3e699dc8a0efd5498b75aec73a21047885f66e18845dbbe85cadaae6502f78e6cc1a4a462c2e214fdf31204d649df1cdf73877448c4620d

Download Submit
memory/3992-1-0x00000000037F0000-0x00000000038F0000-memory.dmp

Filesize
1024KB

Download
memory/3992-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3992-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3992-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3992-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3992-7-0x0000000000400000-0x0000000003588000-memory.dmp

Filesize
49.5MB

Download
memory/4744-11-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/4744-13-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/4744-14-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/6056-15-0x0000000000400000-0x0000000003588000-memory.dmp

Filesize
49.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads