tofsee | beaa88ae783904a89f607a66a75b7a745be7c7d6a631f75c88da18425d0ee411

Analysis

max time kernel
141s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/03/2025, 09:18

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General

Target

2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe
Size

11.4MB
MD5

3de725da8507d50f15f93ef660eb5814
SHA1

a39a126f2fdeccb761ccdf235e0da955abe2c3e4
SHA256

beaa88ae783904a89f607a66a75b7a745be7c7d6a631f75c88da18425d0ee411
SHA512

4184f19579d62b5b278e46621102f62492b9c28dadd2cbd2762bbc661eb5729ebd1631b2cd0ab7baee85e0c5f7df2cb28a54619ca0fe8a9a1072c25c196054b6
SSDEEP

3072:tUbMNIxnynf6ZmHexBK1DQKgrUNjuRCCH+AtUTRM/phZl+H81CCCCCCCCCCCCCCQ:OAN6ynf6tx1ruuRFeAtoRMD6

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\slqblkar = "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
2992	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\slqblkar\ImagePath = "C:\\Windows\\SysWOW64\\slqblkar\\jsmrjidz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2204	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	jsmrjidz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2204	2792	jsmrjidz.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2808	sc.exe
2224	sc.exe
2684	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	jsmrjidz.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-03-30_3de725da8507d50f15f93ef660eb5814_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 1200	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	31
PID 2312 wrote to memory of 1200	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	31
PID 2312 wrote to memory of 1200	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	31
PID 2312 wrote to memory of 1200	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	31
PID 2312 wrote to memory of 2468	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	33
PID 2312 wrote to memory of 2468	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	33
PID 2312 wrote to memory of 2468	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	33
PID 2312 wrote to memory of 2468	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	33
PID 2312 wrote to memory of 2224	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	35
PID 2312 wrote to memory of 2224	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	35
PID 2312 wrote to memory of 2224	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	35
PID 2312 wrote to memory of 2224	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	35
PID 2312 wrote to memory of 2684	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	37
PID 2312 wrote to memory of 2684	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	37
PID 2312 wrote to memory of 2684	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	37
PID 2312 wrote to memory of 2684	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	37
PID 2312 wrote to memory of 2808	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	39
PID 2312 wrote to memory of 2808	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	39
PID 2312 wrote to memory of 2808	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	39
PID 2312 wrote to memory of 2808	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	39
PID 2312 wrote to memory of 2992	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	42
PID 2312 wrote to memory of 2992	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	42
PID 2312 wrote to memory of 2992	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	42
PID 2312 wrote to memory of 2992	2312	2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe	42
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44
PID 2792 wrote to memory of 2204	2792	jsmrjidz.exe	44

C:\Users\Admin\AppData\Local\Temp\2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\slqblkar\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jsmrjidz.exe" C:\Windows\SysWOW64\slqblkar\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create slqblkar binPath= "C:\Windows\SysWOW64\slqblkar\jsmrjidz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description slqblkar "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start slqblkar
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2808
- 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:2992

C:\Windows\SysWOW64\slqblkar\jsmrjidz.exe
C:\Windows\SysWOW64\slqblkar\jsmrjidz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_3de725da8507d50f15f93ef660eb5814_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- 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:2204

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\jsmrjidz.exe

Filesize
14.6MB

MD5
bd4e4e0084c010f3347ea65a14facede

SHA1
179dc7572e32105f7f4ce5cfc5d04c7266a9e3b8

SHA256
17f1bd7cfba407f7b6dc0d902c5c8c5ca4220550622cad63d79e5dfc9535564d

SHA512
704635f1723d0d8984ca8f19049fcca5daea3a13f0173f528ac23580e6035c73606b54304c3b6ecb8db61e123869550890871950e86759c337245251f70aa188

Download Submit
memory/2204-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2204-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2204-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2204-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2204-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2312-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2312-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2312-7-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2312-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2792-16-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads