tofsee | ac175fef445c08ccff4525c5f47c054669484534dd987736c49e8032323b790c

General

Target

2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe
Size

11.4MB
MD5

ab9ec8ebe9690afe05cff8a25153d1f8
SHA1

c3dc0621e73afa945a7ef399fa5872342b102629
SHA256

ac175fef445c08ccff4525c5f47c054669484534dd987736c49e8032323b790c
SHA512

9d2bc692eec1313359d66345fd0784d595c86ce6129156016ba847feb6c3dc410924c3f9ce078abfd1571bbc9fd91ed7a40a16d322e66d45e9ea2fdf0cd94d6b
SSDEEP

24576:d6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQg:MWdLQk

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4668	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\cxuxynns\ImagePath = "C:\\Windows\\SysWOW64\\cxuxynns\\wvjlzwxp.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe

Deletes itself 1 IoCs

pid	Process
3388	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	wvjlzwxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 3388	4896	wvjlzwxp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2820	sc.exe
1348	sc.exe
4804	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
3204	3984	WerFault.exe	82
5000	4896	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	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wvjlzwxp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 1816	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	84
PID 3984 wrote to memory of 1816	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	84
PID 3984 wrote to memory of 1816	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	84
PID 3984 wrote to memory of 368	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	86
PID 3984 wrote to memory of 368	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	86
PID 3984 wrote to memory of 368	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	86
PID 3984 wrote to memory of 2820	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	88
PID 3984 wrote to memory of 2820	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	88
PID 3984 wrote to memory of 2820	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	88
PID 3984 wrote to memory of 1348	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	90
PID 3984 wrote to memory of 1348	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	90
PID 3984 wrote to memory of 1348	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	90
PID 3984 wrote to memory of 4804	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	92
PID 3984 wrote to memory of 4804	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	92
PID 3984 wrote to memory of 4804	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	92
PID 3984 wrote to memory of 4668	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	95
PID 3984 wrote to memory of 4668	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	95
PID 3984 wrote to memory of 4668	3984	2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe	95
PID 4896 wrote to memory of 3388	4896	wvjlzwxp.exe	101
PID 4896 wrote to memory of 3388	4896	wvjlzwxp.exe	101
PID 4896 wrote to memory of 3388	4896	wvjlzwxp.exe	101
PID 4896 wrote to memory of 3388	4896	wvjlzwxp.exe	101
PID 4896 wrote to memory of 3388	4896	wvjlzwxp.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxuxynns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wvjlzwxp.exe" C:\Windows\SysWOW64\cxuxynns\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxuxynns binPath= "C:\Windows\SysWOW64\cxuxynns\wvjlzwxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxuxynns "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxuxynns
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4804
- 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:4668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 1036
  2⤵
  - Program crash
  PID:3204

C:\Windows\SysWOW64\cxuxynns\wvjlzwxp.exe
C:\Windows\SysWOW64\cxuxynns\wvjlzwxp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_ab9ec8ebe9690afe05cff8a25153d1f8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 520
  2⤵
  - Program crash
  PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3984 -ip 3984
1⤵
PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4896 -ip 4896
1⤵
PID:2424

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\wvjlzwxp.exe

Filesize
14.4MB

MD5
9452503fd95cbba36811349804be9a28

SHA1
ab42a518531ba3e85d572742c0c959c99426e18d

SHA256
573f028eba901ee1017d68428088997744a14f59ca1a6bcf29f11c4b93eb9292

SHA512
ad529364a0b1e4fd5a7740aec8ae2ec7192f061e46446e67a120a2d830e38032101f616915b5606bde99b9f88913d70005edd00acbc3ad613b52768e9fbdd6f5

Download Submit
memory/3388-14-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/3388-17-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/3388-16-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/3984-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3984-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3984-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3984-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3984-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3984-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4896-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4896-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4896-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4896-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads