tofsee | f782b32ad2083a329aabc59d2b775cad1dcc04b36c553c516337b5058285a142

General

Target

2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe
Size

14.4MB
MD5

1208d7a1a0f70a2cf91984531c508143
SHA1

48acca92982ec96ba1922a5bd1438a6c8f9de56e
SHA256

f782b32ad2083a329aabc59d2b775cad1dcc04b36c553c516337b5058285a142
SHA512

255e6c6c1db59bf6699c492ef48bc9edcad279db0e201b56611e99dba560ee8fac7c285f6ddadc28f2e3b914f1a35efb93c94d530f4c2285671f11551e306f9a
SSDEEP

24576:CEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ/:bfot

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
3684	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\dyrnvnpr\ImagePath = "C:\\Windows\\SysWOW64\\dyrnvnpr\\mlzbpmnf.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe

Deletes itself 1 IoCs

pid	Process
3596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	mlzbpmnf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1992 set thread context of 3596	1992	mlzbpmnf.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
1060	sc.exe
1196	sc.exe
5064	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
3612	4836	WerFault.exe	82
2272	1992	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mlzbpmnf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-13_1208d7a1a0f70a2cf91984531c508143_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	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 4836 wrote to memory of 836	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	84
PID 4836 wrote to memory of 836	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	84
PID 4836 wrote to memory of 836	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	84
PID 4836 wrote to memory of 1632	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	86
PID 4836 wrote to memory of 1632	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	86
PID 4836 wrote to memory of 1632	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	86
PID 4836 wrote to memory of 1060	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	88
PID 4836 wrote to memory of 1060	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	88
PID 4836 wrote to memory of 1060	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	88
PID 4836 wrote to memory of 1196	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	90
PID 4836 wrote to memory of 1196	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	90
PID 4836 wrote to memory of 1196	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	90
PID 4836 wrote to memory of 5064	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	92
PID 4836 wrote to memory of 5064	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	92
PID 4836 wrote to memory of 5064	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	92
PID 4836 wrote to memory of 3684	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	95
PID 4836 wrote to memory of 3684	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	95
PID 4836 wrote to memory of 3684	4836	2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe	95
PID 1992 wrote to memory of 3596	1992	mlzbpmnf.exe	107
PID 1992 wrote to memory of 3596	1992	mlzbpmnf.exe	107
PID 1992 wrote to memory of 3596	1992	mlzbpmnf.exe	107
PID 1992 wrote to memory of 3596	1992	mlzbpmnf.exe	107
PID 1992 wrote to memory of 3596	1992	mlzbpmnf.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dyrnvnpr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mlzbpmnf.exe" C:\Windows\SysWOW64\dyrnvnpr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dyrnvnpr binPath= "C:\Windows\SysWOW64\dyrnvnpr\mlzbpmnf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dyrnvnpr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dyrnvnpr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5064
- 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:3684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 660
  2⤵
  - Program crash
  PID:3612

C:\Windows\SysWOW64\dyrnvnpr\mlzbpmnf.exe
C:\Windows\SysWOW64\dyrnvnpr\mlzbpmnf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1208d7a1a0f70a2cf91984531c508143_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1992 -s 556
  2⤵
  - Program crash
  PID:2272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4836 -ip 4836
1⤵
PID:2816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1992 -ip 1992
1⤵
PID:1612

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\mlzbpmnf.exe

Filesize
11.9MB

MD5
d5cb51134bcc8ec18c5ede1a44926e50

SHA1
3eeb0c74256ce8f8b6c59c81b11aa57b0ea4042b

SHA256
836f28b103e5ea4d7f80084a15bd19c1af35e9665500e3e9bea419559385311e

SHA512
fac408004ecc5de751dc6ad6f0db13292074c2f9f1edd488bf99e9028c6b92ff00463c314279d85997c1f4d87d98f593c61168eacd7201031fc03db971bb73a7

Download Submit
memory/1992-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1992-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1992-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1992-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3596-14-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/3596-16-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/3596-17-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/4836-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4836-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4836-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4836-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4836-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4836-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads