tofsee | 334796ca3f20363eeb932c79b813eaf27f4b3e750965f1f48e129a2280444134

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

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
228	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\bnkzaqpx\ImagePath = "C:\\Windows\\SysWOW64\\bnkzaqpx\\aixbomvv.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe

Deletes itself 1 IoCs

pid	Process
3984	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2584	aixbomvv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2584 set thread context of 3984	2584	aixbomvv.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
2380	sc.exe
4796	sc.exe
1568	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	2025-01-28_91e00ddfcee930141b272e4430592f29_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	aixbomvv.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2548	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	82
PID 2804 wrote to memory of 2548	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	82
PID 2804 wrote to memory of 2548	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	82
PID 2804 wrote to memory of 4488	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	84
PID 2804 wrote to memory of 4488	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	84
PID 2804 wrote to memory of 4488	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	84
PID 2804 wrote to memory of 1568	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	86
PID 2804 wrote to memory of 1568	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	86
PID 2804 wrote to memory of 1568	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	86
PID 2804 wrote to memory of 2380	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	88
PID 2804 wrote to memory of 2380	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	88
PID 2804 wrote to memory of 2380	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	88
PID 2804 wrote to memory of 4796	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	90
PID 2804 wrote to memory of 4796	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	90
PID 2804 wrote to memory of 4796	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	90
PID 2804 wrote to memory of 228	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	93
PID 2804 wrote to memory of 228	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	93
PID 2804 wrote to memory of 228	2804	2025-01-28_91e00ddfcee930141b272e4430592f29_mafia.exe	93
PID 2584 wrote to memory of 3984	2584	aixbomvv.exe	95
PID 2584 wrote to memory of 3984	2584	aixbomvv.exe	95
PID 2584 wrote to memory of 3984	2584	aixbomvv.exe	95
PID 2584 wrote to memory of 3984	2584	aixbomvv.exe	95
PID 2584 wrote to memory of 3984	2584	aixbomvv.exe	95

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⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bnkzaqpx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aixbomvv.exe" C:\Windows\SysWOW64\bnkzaqpx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bnkzaqpx binPath= "C:\Windows\SysWOW64\bnkzaqpx\aixbomvv.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:1568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bnkzaqpx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bnkzaqpx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- 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:228

C:\Windows\SysWOW64\bnkzaqpx\aixbomvv.exe
C:\Windows\SysWOW64\bnkzaqpx\aixbomvv.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:2584
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3984

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\aixbomvv.exe

Filesize
12.6MB

MD5
d7560dea491bde00410cdfd08e5dbd67

SHA1
104d101ead586daf2c6f13a4da1182fc30802e86

SHA256
a2edeb8d10bc3c77f443e5256662557398a1369442a218b3f91ddb70dd06c3de

SHA512
5d34e273601fc572e367dcfebc497fec10caf2ed54aa559790482d200a45497bb4ed9437ad0d69293addd4fe71ab2b4307617d736e425b8d26c134317545f5ed

Download Submit
memory/2584-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2584-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2584-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2804-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2804-9-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/2804-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2804-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2804-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/3984-13-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/3984-18-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/3984-19-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/3984-20-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/3984-21-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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