tofsee | 58d263a465b3cbceadee5179e6001af1ba2ce05d7b7e92ec698d2740d233ac4d

General

Target

2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe
Size

10.4MB
MD5

f7a90a445087c5cfba1dbe93b42616f4
SHA1

ed68469f3728716f4b6a595da21745b9c00cba6b
SHA256

58d263a465b3cbceadee5179e6001af1ba2ce05d7b7e92ec698d2740d233ac4d
SHA512

602de8960581b5983672b4a1bc4e4c601d17bb3f90787b310290cc9238eab4a44524c5b6ffd5320b66323c9213baa3ed51c16415d3bd2076005b45d7706ce6fc
SSDEEP

3072:Jd/4YU1GznYfU+kBGsrOp7XwL0wMjKRaD8ll3//0N0N0N0N0N0N0N0N0N0N0N0NF:DAJGznKpe89gLlMOoD4

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
6076	netsh.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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe

Executes dropped EXE 1 IoCs

pid	Process
2920	kirsbxmi.exe

Launches sc.exe 3 IoCs

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

pid	Process
3316	sc.exe
6072	sc.exe
3376	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 1 IoCs

pid	pid_target	Process	procid_target
5272	3372	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 7 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	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.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	sc.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3372 wrote to memory of 5100	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	105
PID 3372 wrote to memory of 5100	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	105
PID 3372 wrote to memory of 5100	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	105
PID 3372 wrote to memory of 2724	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	107
PID 3372 wrote to memory of 2724	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	107
PID 3372 wrote to memory of 2724	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	107
PID 3372 wrote to memory of 6072	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	109
PID 3372 wrote to memory of 6072	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	109
PID 3372 wrote to memory of 6072	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	109
PID 3372 wrote to memory of 3376	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	111
PID 3372 wrote to memory of 3376	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	111
PID 3372 wrote to memory of 3376	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	111
PID 3372 wrote to memory of 3316	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	113
PID 3372 wrote to memory of 3316	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	113
PID 3372 wrote to memory of 3316	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	113
PID 3372 wrote to memory of 6076	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	116
PID 3372 wrote to memory of 6076	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	116
PID 3372 wrote to memory of 6076	3372	2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe	116

C:\Users\Admin\AppData\Local\Temp\2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ukuvncws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kirsbxmi.exe" C:\Windows\SysWOW64\ukuvncws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ukuvncws binPath= "C:\Windows\SysWOW64\ukuvncws\kirsbxmi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:6072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ukuvncws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ukuvncws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3316
- 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:6076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 628
  2⤵
  - Program crash
  PID:5272

C:\Windows\SysWOW64\ukuvncws\kirsbxmi.exe
C:\Windows\SysWOW64\ukuvncws\kirsbxmi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_f7a90a445087c5cfba1dbe93b42616f4_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3372 -ip 3372
1⤵
PID:4252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

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

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

1

T1562.004

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\kirsbxmi.exe

Filesize
13.5MB

MD5
fa14ffcbf939ea4a0786e505443d880a

SHA1
7dab720c8e55e556a61ae55a0028b7293db2522c

SHA256
87458d97890c9b52810f326c880041f1cac7f8bec94d71c47d01cde79da5e366

SHA512
e85aa4e40228ebc1a4cd2a270ba6189eb9c60c1b7c34965b3a6b78b9472ae7f5fe312d511f5612d62c42e1aa0a623c23f12873d063cb5510649ae3bbfe302485

Download Submit
memory/3372-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/3372-2-0x0000000000460000-0x0000000000473000-memory.dmp

Filesize
76KB

Download
memory/3372-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3372-7-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3372-8-0x0000000000460000-0x0000000000473000-memory.dmp

Filesize
76KB

Download
memory/3372-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads