tofsee | 86b61d5eee0fc02fcc5fbb06804981775d16f458cb0a8491f0074c9c3d2400e5

General

Target

2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe
Size

14.0MB
MD5

a1cbc7e727700a6143693eb7345c1cd2
SHA1

cbd4eca89194b9ab0562dd6c98ccc7bcf5bad32f
SHA256

86b61d5eee0fc02fcc5fbb06804981775d16f458cb0a8491f0074c9c3d2400e5
SHA512

bdee95b844b02b5271d354899ef9e150783ec81bf65e07f5175bfdb7d5eff72c6c56d841c893b293e31832d8663eea14dc40656f6cbb7432f6862c2450f388fc
SSDEEP

3072:I5nbTHQC2mC+vdVWQhHPGyCsPiHMhPxO7rFI7NP6BfGrIHmll9uX4YRrVOVOVOVY:MnJjWIvGyCYq/H2Ak5uXJ

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
1072	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-1-5-21-83325578-304917428-1200496059-1000\Control Panel\International\Geo\Nation	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe

Executes dropped EXE 1 IoCs

pid	Process
3184	ykjxisau.exe

Launches sc.exe 3 IoCs

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

pid	Process
8	sc.exe
3572	sc.exe
2056	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 1 IoCs

pid	pid_target	Process	procid_target
4500	4840	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_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

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 3696	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	106
PID 4840 wrote to memory of 3696	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	106
PID 4840 wrote to memory of 3696	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	106
PID 4840 wrote to memory of 1460	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	108
PID 4840 wrote to memory of 1460	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	108
PID 4840 wrote to memory of 1460	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	108
PID 4840 wrote to memory of 8	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	110
PID 4840 wrote to memory of 8	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	110
PID 4840 wrote to memory of 8	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	110
PID 4840 wrote to memory of 3572	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	112
PID 4840 wrote to memory of 3572	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	112
PID 4840 wrote to memory of 3572	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	112
PID 4840 wrote to memory of 2056	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	114
PID 4840 wrote to memory of 2056	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	114
PID 4840 wrote to memory of 2056	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	114
PID 4840 wrote to memory of 1072	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	117
PID 4840 wrote to memory of 1072	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	117
PID 4840 wrote to memory of 1072	4840	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	117

C:\Users\Admin\AppData\Local\Temp\2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pjircoxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykjxisau.exe" C:\Windows\SysWOW64\pjircoxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pjircoxe binPath= "C:\Windows\SysWOW64\pjircoxe\ykjxisau.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:8
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pjircoxe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pjircoxe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2056
- 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:1072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4840 -s 888
  2⤵
  - Program crash
  PID:4500

C:\Windows\SysWOW64\pjircoxe\ykjxisau.exe
C:\Windows\SysWOW64\pjircoxe\ykjxisau.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:3184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4840 -ip 4840
1⤵
PID:3668

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
13.9MB

MD5
3670441db756e96f6006f36893e6a3c2

SHA1
624db9f9645d73e410f2678161d0fe29cf8f5f52

SHA256
16686cdf6474a009ec4116edaf65b1325190c2f6862f132a8d132e5c975865da

SHA512
69dd512a24d84a2128dc88ad7060d6b779db94772872907e132e201213595f2bb0b7bbb42fb9ac19526e377ebb26b3e6f0fd973318b761b877520ae3a493c9c8

Download Submit
memory/4840-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4840-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/4840-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4840-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4840-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4840-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads