tofsee | 01ca163479f86dfeb9d4257e4ffff6cf8bee69bad7f31557d0900276f7bd8589

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 06:49

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General

Target

2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe
Size

12.3MB
MD5

694b78eeab46dddf1b29828b11336439
SHA1

2c93a58c3364a721884d0ac66d43a5bd14dc2762
SHA256

01ca163479f86dfeb9d4257e4ffff6cf8bee69bad7f31557d0900276f7bd8589
SHA512

66c7576791a3259c81ab9f29d0623e7b6d3c31d647680153bda0e825fb2e0dc88f12b3a1496674b9197cc743a3b0f6f5fbb65c554210546a09503a08fa623a26
SSDEEP

24576:BEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ+:afots

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\viicrkoo = "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
808	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\viicrkoo\ImagePath = "C:\\Windows\\SysWOW64\\viicrkoo\\cpbyrejt.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2532	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	cpbyrejt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 2532	2252	cpbyrejt.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2920	sc.exe
2524	sc.exe
2604	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	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpbyrejt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 2848	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	30
PID 2764 wrote to memory of 2848	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	30
PID 2764 wrote to memory of 2848	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	30
PID 2764 wrote to memory of 2848	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	30
PID 2764 wrote to memory of 2744	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	32
PID 2764 wrote to memory of 2744	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	32
PID 2764 wrote to memory of 2744	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	32
PID 2764 wrote to memory of 2744	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	32
PID 2764 wrote to memory of 2920	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	34
PID 2764 wrote to memory of 2920	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	34
PID 2764 wrote to memory of 2920	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	34
PID 2764 wrote to memory of 2920	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	34
PID 2764 wrote to memory of 2524	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	36
PID 2764 wrote to memory of 2524	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	36
PID 2764 wrote to memory of 2524	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	36
PID 2764 wrote to memory of 2524	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	36
PID 2764 wrote to memory of 2604	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	38
PID 2764 wrote to memory of 2604	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	38
PID 2764 wrote to memory of 2604	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	38
PID 2764 wrote to memory of 2604	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	38
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2252 wrote to memory of 2532	2252	cpbyrejt.exe	41
PID 2764 wrote to memory of 808	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	42
PID 2764 wrote to memory of 808	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	42
PID 2764 wrote to memory of 808	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	42
PID 2764 wrote to memory of 808	2764	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\viicrkoo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpbyrejt.exe" C:\Windows\SysWOW64\viicrkoo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create viicrkoo binPath= "C:\Windows\SysWOW64\viicrkoo\cpbyrejt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description viicrkoo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2524
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start viicrkoo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2604
- 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:808

C:\Windows\SysWOW64\viicrkoo\cpbyrejt.exe
C:\Windows\SysWOW64\viicrkoo\cpbyrejt.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- 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:2532

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\cpbyrejt.exe

Filesize
13.0MB

MD5
19e2f6a4fa8ae5d5889b48da3e34466f

SHA1
1e07305a902172739d0e4ae63bbb98b65ec1a0af

SHA256
02f0a01080d960877b24986a1352f0ff73578bd313399d1c51aa4cfe16e71e00

SHA512
77946cb445022af663f63b82806d7dee9efb4d6d3f5f0cb380f68ad10b0e35decb49f7bd76354f0ca9b6073095852b0c526c4bedc434412f22e65ab70c983d6b

Download Submit
memory/2252-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2532-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2532-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2764-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2764-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2764-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2764-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2764-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads