tofsee | b74ea2c28c3157d6261d1ad2700137a9e2beb81145a433b5d16c0fcbf8fe79ba

General

Target

2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe
Size

13.6MB
MD5

aea54ad2d5cbdd85e9515c75e4849edd
SHA1

6dbcaabb7b0db5779c88b64d53ab1d97cfc9e686
SHA256

b74ea2c28c3157d6261d1ad2700137a9e2beb81145a433b5d16c0fcbf8fe79ba
SHA512

410d52366122a1d8d48626a961e1d534bc72ac32f979fbdcda97abd0f278994c701315ccbf8c5a3101fbc2a59eddae61af155d91e095b5cfc6cb36bac366abe3
SSDEEP

24576:fpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt9:Roo

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
1852	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\mmzkbcpe\ImagePath = "C:\\Windows\\SysWOW64\\mmzkbcpe\\zhwanluu.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe

Deletes itself 1 IoCs

pid	Process
1352	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
348	zhwanluu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 348 set thread context of 1352	348	zhwanluu.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1644	sc.exe
264	sc.exe
208	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 2 IoCs

pid	pid_target	Process	procid_target
516	1312	WerFault.exe	83
1112	348	WerFault.exe	94

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	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_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	netsh.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	zhwanluu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 1772	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	84
PID 1312 wrote to memory of 1772	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	84
PID 1312 wrote to memory of 1772	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	84
PID 1312 wrote to memory of 1328	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	86
PID 1312 wrote to memory of 1328	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	86
PID 1312 wrote to memory of 1328	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	86
PID 1312 wrote to memory of 264	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	88
PID 1312 wrote to memory of 264	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	88
PID 1312 wrote to memory of 264	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	88
PID 1312 wrote to memory of 208	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	90
PID 1312 wrote to memory of 208	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	90
PID 1312 wrote to memory of 208	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	90
PID 1312 wrote to memory of 1644	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	92
PID 1312 wrote to memory of 1644	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	92
PID 1312 wrote to memory of 1644	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	92
PID 1312 wrote to memory of 1852	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	95
PID 1312 wrote to memory of 1852	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	95
PID 1312 wrote to memory of 1852	1312	2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe	95
PID 348 wrote to memory of 1352	348	zhwanluu.exe	100
PID 348 wrote to memory of 1352	348	zhwanluu.exe	100
PID 348 wrote to memory of 1352	348	zhwanluu.exe	100
PID 348 wrote to memory of 1352	348	zhwanluu.exe	100
PID 348 wrote to memory of 1352	348	zhwanluu.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmzkbcpe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zhwanluu.exe" C:\Windows\SysWOW64\mmzkbcpe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mmzkbcpe binPath= "C:\Windows\SysWOW64\mmzkbcpe\zhwanluu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mmzkbcpe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mmzkbcpe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1644
- 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:1852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 1036
  2⤵
  - Program crash
  PID:516

C:\Windows\SysWOW64\mmzkbcpe\zhwanluu.exe
C:\Windows\SysWOW64\mmzkbcpe\zhwanluu.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_aea54ad2d5cbdd85e9515c75e4849edd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:348
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 348 -s 532
  2⤵
  - Program crash
  PID:1112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1312 -ip 1312
1⤵
PID:3224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 348 -ip 348
1⤵
PID:4020

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\zhwanluu.exe

Filesize
10.1MB

MD5
8c297c836fc3f9de76613a29e10761fb

SHA1
b0a3e4407ed44c16ecaf5816e12eb93120bb57a4

SHA256
484564b702a33f451767e5e5db4ae476599ebeb738dc0982f4f2a53f4b1a72cd

SHA512
4728d3e8c1e7f7bbaa33e5a4da6b06a4b904db6b5e14e3f06d21217061aa7be5b6dba4a2d3f801e94d74dd4e68a9dc667e7eece42819e640bf93b541906f2e5b

Download Submit
memory/348-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/348-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/348-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/348-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1312-2-0x00000000004C0000-0x00000000004D3000-memory.dmp

Filesize
76KB

Download
memory/1312-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1312-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1312-8-0x00000000004C0000-0x00000000004D3000-memory.dmp

Filesize
76KB

Download
memory/1312-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/1352-14-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/1352-16-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/1352-17-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads