tofsee | 334796ca3f20363eeb932c79b813eaf27f4b3e750965f1f48e129a2280444134

Analysis

max time kernel
144s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 13:11

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General

Target

2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe
Size

12.3MB
MD5

91e00ddfcee930141b272e4430592f29
SHA1

db437292dd260d76c88cb026a163a7899564db9f
SHA256

334796ca3f20363eeb932c79b813eaf27f4b3e750965f1f48e129a2280444134
SHA512

26921e09a65f7807653af44142af750127ebad427c9cb1c8beb196c265f4964e3be9b8a9d1504aca4796f2656039e45942d39d90e6ac72a05c14a046b5227d5f
SSDEEP

393216:5XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXt:T

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\firzshtu = "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
2632	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\firzshtu\ImagePath = "C:\\Windows\\SysWOW64\\firzshtu\\kjxznkld.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2940	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	kjxznkld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 2940	2280	kjxznkld.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2488	sc.exe
2664	sc.exe
2760	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kjxznkld.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 2308	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	30
PID 2464 wrote to memory of 2308	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	30
PID 2464 wrote to memory of 2308	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	30
PID 2464 wrote to memory of 2308	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	30
PID 2464 wrote to memory of 1564	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	32
PID 2464 wrote to memory of 1564	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	32
PID 2464 wrote to memory of 1564	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	32
PID 2464 wrote to memory of 1564	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	32
PID 2464 wrote to memory of 2488	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	34
PID 2464 wrote to memory of 2488	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	34
PID 2464 wrote to memory of 2488	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	34
PID 2464 wrote to memory of 2488	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	34
PID 2464 wrote to memory of 2664	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	36
PID 2464 wrote to memory of 2664	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	36
PID 2464 wrote to memory of 2664	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	36
PID 2464 wrote to memory of 2664	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	36
PID 2464 wrote to memory of 2760	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	38
PID 2464 wrote to memory of 2760	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	38
PID 2464 wrote to memory of 2760	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	38
PID 2464 wrote to memory of 2760	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	38
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2280 wrote to memory of 2940	2280	kjxznkld.exe	41
PID 2464 wrote to memory of 2632	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	42
PID 2464 wrote to memory of 2632	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	42
PID 2464 wrote to memory of 2632	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	42
PID 2464 wrote to memory of 2632	2464	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\firzshtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\firzshtu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create firzshtu binPath= "C:\Windows\SysWOW64\firzshtu\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description firzshtu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start firzshtu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- 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:2632

C:\Windows\SysWOW64\firzshtu\kjxznkld.exe
C:\Windows\SysWOW64\firzshtu\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- 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:2940

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\kjxznkld.exe

Filesize
11.4MB

MD5
edbd75060fac36b44b0c95a3a9d08fbe

SHA1
ca9bc6bee23e436a67ba0843629cc09c374363ea

SHA256
85825d308a692468f7cc190d2eb686e35eb24f710c3a0d840e785a88b5ff1484

SHA512
8d9ef2832fe8479be4500aa1e5c88841b37dfffd55555fb0baa873ef2a71d9859abb30d9ce12eb75de00fd915e6adf10b9707b65d7292e63f195ffac27a90580

Download Submit
memory/2280-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2464-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2464-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2464-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2464-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2464-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/2464-16-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/2464-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2940-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2940-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2940-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2940-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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