tofsee | e13dbafcfd8506784a4d05380e0d5becbfcbd3b0933009d584c9acfe3e1fece1

Analysis

max time kernel
140s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:10

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General

Target

2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe
Size

14.5MB
MD5

1220665f1aea031000e46b1aec1a5c44
SHA1

77df7ed1471b3845bb5e74a52a416ad058783f7e
SHA256

e13dbafcfd8506784a4d05380e0d5becbfcbd3b0933009d584c9acfe3e1fece1
SHA512

a5f8b5e5543d925c33d2d37334685e620bf75842740384f9e819d159c3a6d31a3df7e66463b8135bbddd88f00dfce2194145fa74d2e3685cd5625454a97fcccd
SSDEEP

3072:x5nbTHQC2mC+vdVWQhHPGyCsPiHMhPxO7rFI7NP6BfGrIHmll9uX4YRrVOVOVOVh:znJjWIvGyCYq/H2Ak5uXa

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\yimjevto = "0"	svchost.exe

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
2708	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\yimjevto\ImagePath = "C:\\Windows\\SysWOW64\\yimjevto\\zzalghfn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2712	zzalghfn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 2628	2712	zzalghfn.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2368	sc.exe
2760	sc.exe
2868	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

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zzalghfn.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2312	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	31
PID 2860 wrote to memory of 2312	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	31
PID 2860 wrote to memory of 2312	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	31
PID 2860 wrote to memory of 2312	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	31
PID 2860 wrote to memory of 1804	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	33
PID 2860 wrote to memory of 1804	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	33
PID 2860 wrote to memory of 1804	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	33
PID 2860 wrote to memory of 1804	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	33
PID 2860 wrote to memory of 2368	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	35
PID 2860 wrote to memory of 2368	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	35
PID 2860 wrote to memory of 2368	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	35
PID 2860 wrote to memory of 2368	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	35
PID 2860 wrote to memory of 2760	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	37
PID 2860 wrote to memory of 2760	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	37
PID 2860 wrote to memory of 2760	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	37
PID 2860 wrote to memory of 2760	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	37
PID 2860 wrote to memory of 2868	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	39
PID 2860 wrote to memory of 2868	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	39
PID 2860 wrote to memory of 2868	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	39
PID 2860 wrote to memory of 2868	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	39
PID 2860 wrote to memory of 2708	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	42
PID 2860 wrote to memory of 2708	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	42
PID 2860 wrote to memory of 2708	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	42
PID 2860 wrote to memory of 2708	2860	2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe	42
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44
PID 2712 wrote to memory of 2628	2712	zzalghfn.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yimjevto\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zzalghfn.exe" C:\Windows\SysWOW64\yimjevto\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yimjevto binPath= "C:\Windows\SysWOW64\yimjevto\zzalghfn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yimjevto "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yimjevto
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- 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:2708

C:\Windows\SysWOW64\yimjevto\zzalghfn.exe
C:\Windows\SysWOW64\yimjevto\zzalghfn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_1220665f1aea031000e46b1aec1a5c44_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.4MB

MD5
bbf30c3b1d25a55d24cb40a810ffe426

SHA1
bdf2189e6ce97e8d7caad64d9200b57144f717ff

SHA256
f281abbcdd69c1c205df22cea15670fbdb1e0aea0997cf1f866ac36761feccbe

SHA512
593583688dcf6729887a328df369cc5e56477d5bfbac752c9b291b05d4930e00815808abf6cea5fbd1d244a33fb2055e167271f9e97a112967c1e65d091ce738

Download Submit
memory/2628-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-17-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2860-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2860-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2860-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2860-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2860-7-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2860-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads