tofsee | 0ba662b755e3d09266d950b4632708305b20d306a93c0da47e2a966f8884c5d1

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:17

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General

Target

2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe
Size

10.3MB
MD5

389e7e05d4886aca8078bd6cda6c53a5
SHA1

94e78b74763ce6d18fba23dc4c43410e3e5d809c
SHA256

0ba662b755e3d09266d950b4632708305b20d306a93c0da47e2a966f8884c5d1
SHA512

14065b530e595ca4665f84afc6d8501dc510cb941656fdc88131d166d5dfb778b5b2d197175dec1f8ec7cf0e2ab40883600fb090cf353c5dbfc8ca4fa1e753ff
SSDEEP

12288:zMLpU0QKuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiV:YLpcKU

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\kmrjcwgx = "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\kmrjcwgx\ImagePath = "C:\\Windows\\SysWOW64\\kmrjcwgx\\ejtoiurt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2872	ejtoiurt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 2628	2872	ejtoiurt.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
1716	sc.exe
1960	sc.exe
2724	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ejtoiurt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2152	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	30
PID 2392 wrote to memory of 2152	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	30
PID 2392 wrote to memory of 2152	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	30
PID 2392 wrote to memory of 2152	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	30
PID 2392 wrote to memory of 2548	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	32
PID 2392 wrote to memory of 2548	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	32
PID 2392 wrote to memory of 2548	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	32
PID 2392 wrote to memory of 2548	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	32
PID 2392 wrote to memory of 1716	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	34
PID 2392 wrote to memory of 1716	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	34
PID 2392 wrote to memory of 1716	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	34
PID 2392 wrote to memory of 1716	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	34
PID 2392 wrote to memory of 1960	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	36
PID 2392 wrote to memory of 1960	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	36
PID 2392 wrote to memory of 1960	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	36
PID 2392 wrote to memory of 1960	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	36
PID 2392 wrote to memory of 2724	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	38
PID 2392 wrote to memory of 2724	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	38
PID 2392 wrote to memory of 2724	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	38
PID 2392 wrote to memory of 2724	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	38
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2872 wrote to memory of 2628	2872	ejtoiurt.exe	42
PID 2392 wrote to memory of 2708	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	43
PID 2392 wrote to memory of 2708	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	43
PID 2392 wrote to memory of 2708	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	43
PID 2392 wrote to memory of 2708	2392	2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kmrjcwgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ejtoiurt.exe" C:\Windows\SysWOW64\kmrjcwgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kmrjcwgx binPath= "C:\Windows\SysWOW64\kmrjcwgx\ejtoiurt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kmrjcwgx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1960
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kmrjcwgx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- 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\kmrjcwgx\ejtoiurt.exe
C:\Windows\SysWOW64\kmrjcwgx\ejtoiurt.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_389e7e05d4886aca8078bd6cda6c53a5_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2872
- 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\ejtoiurt.exe

Filesize
12.8MB

MD5
7fe5e2651e6a56f2c583b1430281d38a

SHA1
cb17dc79bcbd84bba0c39b2cd0fd26102cac73a6

SHA256
8c0874db26c5feab4c129e2e78d3bdc33bdd0feb768b28d5886bd822e84cffef

SHA512
0d3bd56ae9db6a23ec6064105a343d5a14c671a49d4dfc5075db3b7d259aef8aaa7685f934d725413235f6dfd33c2393c5e74770089127037f3ee5fcb756c4d1

Download Submit
memory/2392-15-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2392-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2392-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2392-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/2392-14-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

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

Filesize
84KB

Download
memory/2628-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2628-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

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

Filesize
84KB

Download
memory/2872-12-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads