tofsee | 84339e6b93e9977af2f0043f1c2bccad0a29da9233e0239907b7c5f42d0312df

General

Target

2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe
Size

14.7MB
MD5

6c09c1793a9485ddf99bbbf46b9e443b
SHA1

af6e2515303e6ba3efd5aa6ac11bceb949840fea
SHA256

84339e6b93e9977af2f0043f1c2bccad0a29da9233e0239907b7c5f42d0312df
SHA512

d36579fc3c034331e9bac0d996f278880ad06463045ae9c6146154ed5ad238a4823275bf3cd529626603907dc20040af6e2a6d30364cbc8d93fcdae47467d76e
SSDEEP

12288:BWaQslyPXVhHfUjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjje:YaQNlhHf7

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
2548	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\kjigyxfi\ImagePath = "C:\\Windows\\SysWOW64\\kjigyxfi\\qlphxiki.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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
3748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4484	qlphxiki.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4484 set thread context of 3748	4484	qlphxiki.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4324	sc.exe
4452	sc.exe
1064	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2892	4960	WerFault.exe	85
3088	4484	WerFault.exe	99

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	qlphxiki.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 2784	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	89
PID 4960 wrote to memory of 2784	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	89
PID 4960 wrote to memory of 2784	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	89
PID 4960 wrote to memory of 420	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	91
PID 4960 wrote to memory of 420	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	91
PID 4960 wrote to memory of 420	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	91
PID 4960 wrote to memory of 4324	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	93
PID 4960 wrote to memory of 4324	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	93
PID 4960 wrote to memory of 4324	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	93
PID 4960 wrote to memory of 4452	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	95
PID 4960 wrote to memory of 4452	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	95
PID 4960 wrote to memory of 4452	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	95
PID 4960 wrote to memory of 1064	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	97
PID 4960 wrote to memory of 1064	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	97
PID 4960 wrote to memory of 1064	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	97
PID 4960 wrote to memory of 2548	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	100
PID 4960 wrote to memory of 2548	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	100
PID 4960 wrote to memory of 2548	4960	2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe	100
PID 4484 wrote to memory of 3748	4484	qlphxiki.exe	105
PID 4484 wrote to memory of 3748	4484	qlphxiki.exe	105
PID 4484 wrote to memory of 3748	4484	qlphxiki.exe	105
PID 4484 wrote to memory of 3748	4484	qlphxiki.exe	105
PID 4484 wrote to memory of 3748	4484	qlphxiki.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kjigyxfi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qlphxiki.exe" C:\Windows\SysWOW64\kjigyxfi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kjigyxfi binPath= "C:\Windows\SysWOW64\kjigyxfi\qlphxiki.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kjigyxfi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kjigyxfi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1064
- 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:2548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 596
  2⤵
  - Program crash
  PID:2892

C:\Windows\SysWOW64\kjigyxfi\qlphxiki.exe
C:\Windows\SysWOW64\kjigyxfi\qlphxiki.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_6c09c1793a9485ddf99bbbf46b9e443b_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 512
  2⤵
  - Program crash
  PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4960 -ip 4960
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4484 -ip 4484
1⤵
PID:628

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

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Downloads

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

Filesize
11.4MB

MD5
e91e12228784b168dfeabf1f0aada218

SHA1
a0dbf596a98c5ed14db9a34ea46df439cfdc1df3

SHA256
6b0d0145d9b6a81fbd66d3f5ff907322edf9c3dd7587c8afe18bd941005b2d1b

SHA512
b42d7cd1da7eb9af8bfc030d26fc45a2cac60f9c4274d040a7c73353df41f42dcd26d4d1583d6a50019004de7e9862ea7f7c7698a72f30763dc168b2c6cd9e27

Download Submit
memory/3748-13-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/3748-15-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/3748-16-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/4484-11-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4484-12-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4484-17-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4960-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4960-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/4960-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4960-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/4960-7-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/4960-2-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads