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
3188	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
3840	nzymxhpj.exe

Launches sc.exe 3 IoCs

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

pid	Process
464	sc.exe
1932	sc.exe
4420	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
4848	5100	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 5100 wrote to memory of 948	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	105
PID 5100 wrote to memory of 948	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	105
PID 5100 wrote to memory of 948	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	105
PID 5100 wrote to memory of 4200	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	107
PID 5100 wrote to memory of 4200	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	107
PID 5100 wrote to memory of 4200	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	107
PID 5100 wrote to memory of 464	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	109
PID 5100 wrote to memory of 464	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	109
PID 5100 wrote to memory of 464	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	109
PID 5100 wrote to memory of 1932	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	111
PID 5100 wrote to memory of 1932	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	111
PID 5100 wrote to memory of 1932	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	111
PID 5100 wrote to memory of 4420	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	113
PID 5100 wrote to memory of 4420	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	113
PID 5100 wrote to memory of 4420	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	113
PID 5100 wrote to memory of 3188	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	116
PID 5100 wrote to memory of 3188	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	116
PID 5100 wrote to memory of 3188	5100	2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe	116

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:5100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ujswwomq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzymxhpj.exe" C:\Windows\SysWOW64\ujswwomq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ujswwomq binPath= "C:\Windows\SysWOW64\ujswwomq\nzymxhpj.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:464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ujswwomq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ujswwomq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4420
- 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:3188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5100 -s 676
  2⤵
  - Program crash
  PID:4848

C:\Windows\SysWOW64\ujswwomq\nzymxhpj.exe
C:\Windows\SysWOW64\ujswwomq\nzymxhpj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_a1cbc7e727700a6143693eb7345c1cd2_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
PID:3840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5100 -ip 5100
1⤵
PID:856

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\nzymxhpj.exe

Filesize
12.1MB

MD5
f9068dd2c4508874fd14ba53ba6ab557

SHA1
b3a353c94bfbbccf831c317bea01c90a9e7ab25b

SHA256
8f502a0761b0c64e2054c71a7c47309782692fe2bb089ebb11c80923e22e3ea3

SHA512
8ecb2718c67c5a0e681cca7da802b2b72d1eb8769c5e1e49c6861e00d7cf0871f69c4d51d204f34cc02ec82d5e8cd90dfef0b9c35ec0d6c1f657dfb5c742ea13

Download Submit
memory/5100-1-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/5100-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/5100-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads