tofsee | 97a7e086d946e1b070d30772ab6b70558ecb5f7ef5c82cacde6bbbc30a7bc76b

General

Target

2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe
Size

12.7MB
MD5

e05d9278dc7aa520dc9515f9041e3c40
SHA1

a08661c3f7931b4bf14033523772919b7dc3c6cb
SHA256

97a7e086d946e1b070d30772ab6b70558ecb5f7ef5c82cacde6bbbc30a7bc76b
SHA512

3a05a9dab3203e195c5458ef57632071419a1f1d9c9da921e4abc21bb39fb460f0e76b0cb981a6f71304244ea7d09a5bf6ccba682f4fa73d412782306bd40a17
SSDEEP

3072:4LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/5:1OMdRQr7OB0ypmMXnl8XEPM3noSWOCK

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
3492	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\lbxetajz\ImagePath = "C:\\Windows\\SysWOW64\\lbxetajz\\arzxhcjx.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe

Deletes itself 1 IoCs

pid	Process
2772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2684	arzxhcjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2684 set thread context of 2772	2684	arzxhcjx.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
4012	sc.exe
2096	sc.exe
1148	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
2548	3928	WerFault.exe	83
4168	2684	WerFault.exe	101

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	arzxhcjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3928 wrote to memory of 3616	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	91
PID 3928 wrote to memory of 3616	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	91
PID 3928 wrote to memory of 3616	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	91
PID 3928 wrote to memory of 1276	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	93
PID 3928 wrote to memory of 1276	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	93
PID 3928 wrote to memory of 1276	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	93
PID 3928 wrote to memory of 4012	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	95
PID 3928 wrote to memory of 4012	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	95
PID 3928 wrote to memory of 4012	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	95
PID 3928 wrote to memory of 2096	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	97
PID 3928 wrote to memory of 2096	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	97
PID 3928 wrote to memory of 2096	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	97
PID 3928 wrote to memory of 1148	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	99
PID 3928 wrote to memory of 1148	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	99
PID 3928 wrote to memory of 1148	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	99
PID 3928 wrote to memory of 3492	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	103
PID 3928 wrote to memory of 3492	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	103
PID 3928 wrote to memory of 3492	3928	2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe	103
PID 2684 wrote to memory of 2772	2684	arzxhcjx.exe	108
PID 2684 wrote to memory of 2772	2684	arzxhcjx.exe	108
PID 2684 wrote to memory of 2772	2684	arzxhcjx.exe	108
PID 2684 wrote to memory of 2772	2684	arzxhcjx.exe	108
PID 2684 wrote to memory of 2772	2684	arzxhcjx.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbxetajz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\arzxhcjx.exe" C:\Windows\SysWOW64\lbxetajz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbxetajz binPath= "C:\Windows\SysWOW64\lbxetajz\arzxhcjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbxetajz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbxetajz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1148
- 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:3492
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3928 -s 1296
  2⤵
  - Program crash
  PID:2548

C:\Windows\SysWOW64\lbxetajz\arzxhcjx.exe
C:\Windows\SysWOW64\lbxetajz\arzxhcjx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_e05d9278dc7aa520dc9515f9041e3c40_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 508
  2⤵
  - Program crash
  PID:4168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3928 -ip 3928
1⤵
PID:4156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2684 -ip 2684
1⤵
PID:3232

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\arzxhcjx.exe

Filesize
10.2MB

MD5
a466e2d5144dc3e231b221800240e8a1

SHA1
d3eb128b8cc870dc293f09dcd38de0a9590fb448

SHA256
b4fac069de28adfd2335afbbd68b3e7e7a8bb5033a8a7879884360f56a61936f

SHA512
916e0a34abd13f7516f725d4cbc1a7127f2054d257d37bd1ff69145f9152bd86367b8c39291a7ed4beb6371bf82fc20a84beddd41ad0683bc0b829620c0d92ac

Download Submit
memory/2684-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2684-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2684-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2684-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2772-14-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/2772-16-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/2772-17-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/3928-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3928-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3928-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3928-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3928-8-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/3928-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads