tofsee | 96dc271c4e954a7e65146eaef6435c6bb4c868f612bf46880bf583128740de34

General

Target

2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe
Size

10.3MB
MD5

0db501e7b298021edd67675de8df86c6
SHA1

53469a8b6976a59d14b07348105a9a6271f71d96
SHA256

96dc271c4e954a7e65146eaef6435c6bb4c868f612bf46880bf583128740de34
SHA512

d84c6298db4ee534be0941d69632b1644c74fac2ff73f00858d297d9c1969107d8192bed04e6eac96c4a9e37617ccae927bd16cf740cea2719e7e66f11826418
SSDEEP

24576:UEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZr:xfotp

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
4748	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\chcamhkz\ImagePath = "C:\\Windows\\SysWOW64\\chcamhkz\\ikdovdrh.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-1-5-21-2089655958-977706906-1981639424-1000\Control Panel\International\Geo\Nation	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe

Deletes itself 1 IoCs

pid	Process
3528	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4936	ikdovdrh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4936 set thread context of 3528	4936	ikdovdrh.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2620	sc.exe
212	sc.exe
1072	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
1136	3436	WerFault.exe	82
2912	4936	WerFault.exe	99

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-04_0db501e7b298021edd67675de8df86c6_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ikdovdrh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 5020	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	89
PID 3436 wrote to memory of 5020	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	89
PID 3436 wrote to memory of 5020	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	89
PID 3436 wrote to memory of 2556	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	91
PID 3436 wrote to memory of 2556	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	91
PID 3436 wrote to memory of 2556	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	91
PID 3436 wrote to memory of 1072	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	93
PID 3436 wrote to memory of 1072	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	93
PID 3436 wrote to memory of 1072	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	93
PID 3436 wrote to memory of 2620	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	95
PID 3436 wrote to memory of 2620	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	95
PID 3436 wrote to memory of 2620	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	95
PID 3436 wrote to memory of 212	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	97
PID 3436 wrote to memory of 212	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	97
PID 3436 wrote to memory of 212	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	97
PID 3436 wrote to memory of 4748	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	100
PID 3436 wrote to memory of 4748	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	100
PID 3436 wrote to memory of 4748	3436	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	100
PID 4936 wrote to memory of 3528	4936	ikdovdrh.exe	105
PID 4936 wrote to memory of 3528	4936	ikdovdrh.exe	105
PID 4936 wrote to memory of 3528	4936	ikdovdrh.exe	105
PID 4936 wrote to memory of 3528	4936	ikdovdrh.exe	105
PID 4936 wrote to memory of 3528	4936	ikdovdrh.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chcamhkz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ikdovdrh.exe" C:\Windows\SysWOW64\chcamhkz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create chcamhkz binPath= "C:\Windows\SysWOW64\chcamhkz\ikdovdrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description chcamhkz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start chcamhkz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:212
- 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:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3436 -s 784
  2⤵
  - Program crash
  PID:1136

C:\Windows\SysWOW64\chcamhkz\ikdovdrh.exe
C:\Windows\SysWOW64\chcamhkz\ikdovdrh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 508
  2⤵
  - Program crash
  PID:2912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3436 -ip 3436
1⤵
PID:4844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4936 -ip 4936
1⤵
PID:3024

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\ikdovdrh.exe

Filesize
13.2MB

MD5
ef08394ed8aebe1f411fca90b8fd4e4a

SHA1
1ee7564e9d8976be784d884ead3a7308293826e6

SHA256
89bee7480c99f4d6ed46d6dc96c6479c95536bc67bc5b383384678874c5b19bd

SHA512
fc89b9f7f67c1a79923d4d0bc38d588d7b8611b9d9b628ae4ec1b05fba016e9d91b4be31bbf37699d0526323540c3c34adbd1027cf76f2ba523aff4880acaded

Download Submit
memory/3436-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-2-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/3436-8-0x00000000004B0000-0x00000000004C3000-memory.dmp

Filesize
76KB

Download
memory/3436-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-1-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/3528-14-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/3528-16-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/3528-17-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/4936-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4936-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4936-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4936-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads