tofsee | d7d963662075ad46e9df0d4b8098a87a9199dfe65cfc7554c67de39849803fbe

General

Target

2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe
Size

12.7MB
MD5

caa0fde84567b9fd5c1ba8a338afad87
SHA1

f9d0f545585e9662ce653d0caba713788af67113
SHA256

d7d963662075ad46e9df0d4b8098a87a9199dfe65cfc7554c67de39849803fbe
SHA512

ba173887bcf4d17d5e2e8854432d443fbb34c867f28c61fe482d2a39b773407c5eee986c999ec944615115bbb4a2892294cf745e853c5fea3f027c8a54d878c3
SSDEEP

3072:wl3t+DDATZKP7Ny5Da8nlGAYSjmhpsb9i1UjQJP+Xn2Dg7NVXewtwtwtwtwtwtwn:wzyeKP7qa8VmhpspedP+X2Dg7H

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
4776	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\arjaitqx\ImagePath = "C:\\Windows\\SysWOW64\\arjaitqx\\iccteneg.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-1-5-21-1062200478-553497403-3857448183-1000\Control Panel\International\Geo\Nation	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe

Deletes itself 1 IoCs

pid	Process
4812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2328	iccteneg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 4812	2328	iccteneg.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
5312	sc.exe
2952	sc.exe
4508	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 4 IoCs

pid	pid_target	Process	procid_target
4904	2328	WerFault.exe	105
4948	2328	WerFault.exe	105
4768	2328	WerFault.exe	105
3604	5964	WerFault.exe	86

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	iccteneg.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	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5964 wrote to memory of 2772	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	88
PID 5964 wrote to memory of 2772	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	88
PID 5964 wrote to memory of 2772	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	88
PID 5964 wrote to memory of 5148	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	92
PID 5964 wrote to memory of 5148	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	92
PID 5964 wrote to memory of 5148	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	92
PID 5964 wrote to memory of 5312	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	94
PID 5964 wrote to memory of 5312	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	94
PID 5964 wrote to memory of 5312	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	94
PID 5964 wrote to memory of 2952	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	97
PID 5964 wrote to memory of 2952	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	97
PID 5964 wrote to memory of 2952	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	97
PID 5964 wrote to memory of 4508	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	102
PID 5964 wrote to memory of 4508	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	102
PID 5964 wrote to memory of 4508	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	102
PID 2328 wrote to memory of 4812	2328	iccteneg.exe	106
PID 2328 wrote to memory of 4812	2328	iccteneg.exe	106
PID 2328 wrote to memory of 4812	2328	iccteneg.exe	106
PID 2328 wrote to memory of 4812	2328	iccteneg.exe	106
PID 2328 wrote to memory of 4812	2328	iccteneg.exe	106
PID 5964 wrote to memory of 4776	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	114
PID 5964 wrote to memory of 4776	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	114
PID 5964 wrote to memory of 4776	5964	2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe	114

C:\Users\Admin\AppData\Local\Temp\2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\arjaitqx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iccteneg.exe" C:\Windows\SysWOW64\arjaitqx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create arjaitqx binPath= "C:\Windows\SysWOW64\arjaitqx\iccteneg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description arjaitqx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start arjaitqx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4508
- 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:4776
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5964 -s 1136
  2⤵
  - Program crash
  PID:3604

C:\Windows\SysWOW64\arjaitqx\iccteneg.exe
C:\Windows\SysWOW64\arjaitqx\iccteneg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-04-04_caa0fde84567b9fd5c1ba8a338afad87_black-basta_luca-stealer.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2328 -s 516
  2⤵
  - Program crash
  PID:4904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2328 -s 556
  2⤵
  - Program crash
  PID:4948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2328 -s 564
  2⤵
  - Program crash
  PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2328 -ip 2328
1⤵
PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2328 -ip 2328
1⤵
PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2328 -ip 2328
1⤵
PID:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 5964 -ip 5964
1⤵
PID:3100

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\iccteneg.exe

Filesize
12.8MB

MD5
99fc401ca13dfd545468a27b61a17eba

SHA1
716c05dba692752f22bc73d481ba484ac7dc26e1

SHA256
6b44bd83711a9bea5f092c25ea074fcc503f954fd258407c65d77f4c375f1f3e

SHA512
b8ccc684d2e7a0e54ebe5dffea4347cb0a851f05f91541c5c316ffd5c3541c7542b4c3df929e01d089981dcd0ebe23f219c4d6050b0e0f6b2fe7c4bc91e4555d

Download Submit
memory/2328-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2328-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2328-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2328-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4812-14-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4812-11-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4812-19-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4812-20-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/4812-21-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/5964-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5964-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/5964-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/5964-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5964-17-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/5964-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads