tofsee | 61d9c1885355be993ab6b6339bfa3825b39615801e1ce69a67d94b912bf1c1a2

General

Target

2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe
Size

14.4MB
MD5

a2f263c7ea7a11fe1ecec9cecacf698d
SHA1

0adcbbbd30f5ea94918eee97e627f24e91c1f73c
SHA256

61d9c1885355be993ab6b6339bfa3825b39615801e1ce69a67d94b912bf1c1a2
SHA512

5315c28eb24191f8d0d815987e96daa3793c7ec71799a2f44bec6d30bc7d5d926f025b7086f6482627a01cf8f1b640561f351fde9489a2b3f5ae64de9d87bcde
SSDEEP

49152:PqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:PqtYc3

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
1516	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\nivxhgec\ImagePath = "C:\\Windows\\SysWOW64\\nivxhgec\\bzijsodz.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe

Deletes itself 1 IoCs

pid	Process
972	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4424	bzijsodz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4424 set thread context of 972	4424	bzijsodz.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1532	sc.exe
3840	sc.exe
4296	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
3744	4424	WerFault.exe	94
4060	4384	WerFault.exe	82

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	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bzijsodz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 3604	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	83
PID 4384 wrote to memory of 3604	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	83
PID 4384 wrote to memory of 3604	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	83
PID 4384 wrote to memory of 3096	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	85
PID 4384 wrote to memory of 3096	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	85
PID 4384 wrote to memory of 3096	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	85
PID 4384 wrote to memory of 3840	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	87
PID 4384 wrote to memory of 3840	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	87
PID 4384 wrote to memory of 3840	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	87
PID 4384 wrote to memory of 4296	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	89
PID 4384 wrote to memory of 4296	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	89
PID 4384 wrote to memory of 4296	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	89
PID 4384 wrote to memory of 1532	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	92
PID 4384 wrote to memory of 1532	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	92
PID 4384 wrote to memory of 1532	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	92
PID 4384 wrote to memory of 1516	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	95
PID 4384 wrote to memory of 1516	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	95
PID 4384 wrote to memory of 1516	4384	2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe	95
PID 4424 wrote to memory of 972	4424	bzijsodz.exe	98
PID 4424 wrote to memory of 972	4424	bzijsodz.exe	98
PID 4424 wrote to memory of 972	4424	bzijsodz.exe	98
PID 4424 wrote to memory of 972	4424	bzijsodz.exe	98
PID 4424 wrote to memory of 972	4424	bzijsodz.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nivxhgec\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzijsodz.exe" C:\Windows\SysWOW64\nivxhgec\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nivxhgec binPath= "C:\Windows\SysWOW64\nivxhgec\bzijsodz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nivxhgec "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nivxhgec
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1532
- 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:1516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1028
  2⤵
  - Program crash
  PID:4060

C:\Windows\SysWOW64\nivxhgec\bzijsodz.exe
C:\Windows\SysWOW64\nivxhgec\bzijsodz.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-08_a2f263c7ea7a11fe1ecec9cecacf698d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4424 -s 520
  2⤵
  - Program crash
  PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4424 -ip 4424
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4384 -ip 4384
1⤵
PID:636

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\bzijsodz.exe

Filesize
11.1MB

MD5
0ebe86ddace953b74b0504def7312840

SHA1
7adf3c20f299ea73afe6ac1042965aef3dff1e99

SHA256
83fbf3dd54cfb6bb10b93154e5770791815eb849d332a1bafb86a6469c08b90a

SHA512
a781776729a121feaf269b8de161fdf02464d621448e97e09bef54b7e69e66e8eece32de2cd24ca347b17071e287baeb1cbbf60e7826246b727bfe5e007ee18c

Download Submit
memory/972-8-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/972-14-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/972-15-0x00000000007B0000-0x00000000007C5000-memory.dmp

Filesize
84KB

Download
memory/4384-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4384-1-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

Filesize
1024KB

Download
memory/4384-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4384-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4384-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4384-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4424-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads