tofsee | 01ca163479f86dfeb9d4257e4ffff6cf8bee69bad7f31557d0900276f7bd8589

General

Target

2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe
Size

12.3MB
MD5

694b78eeab46dddf1b29828b11336439
SHA1

2c93a58c3364a721884d0ac66d43a5bd14dc2762
SHA256

01ca163479f86dfeb9d4257e4ffff6cf8bee69bad7f31557d0900276f7bd8589
SHA512

66c7576791a3259c81ab9f29d0623e7b6d3c31d647680153bda0e825fb2e0dc88f12b3a1496674b9197cc743a3b0f6f5fbb65c554210546a09503a08fa623a26
SSDEEP

24576:BEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ+:afots

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
4856	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\dtyboqxc\ImagePath = "C:\\Windows\\SysWOW64\\dtyboqxc\\zymoczas.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-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe

Deletes itself 1 IoCs

pid	Process
1420	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1876	zymoczas.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1876 set thread context of 1420	1876	zymoczas.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4472	sc.exe
884	sc.exe
3300	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
3400	376	WerFault.exe	83
1700	1876	WerFault.exe	98

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	2025-02-02_694b78eeab46dddf1b29828b11336439_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	zymoczas.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 376 wrote to memory of 4840	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	86
PID 376 wrote to memory of 4840	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	86
PID 376 wrote to memory of 4840	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	86
PID 376 wrote to memory of 4088	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	88
PID 376 wrote to memory of 4088	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	88
PID 376 wrote to memory of 4088	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	88
PID 376 wrote to memory of 4472	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	90
PID 376 wrote to memory of 4472	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	90
PID 376 wrote to memory of 4472	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	90
PID 376 wrote to memory of 884	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	94
PID 376 wrote to memory of 884	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	94
PID 376 wrote to memory of 884	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	94
PID 376 wrote to memory of 3300	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	96
PID 376 wrote to memory of 3300	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	96
PID 376 wrote to memory of 3300	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	96
PID 376 wrote to memory of 4856	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	99
PID 376 wrote to memory of 4856	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	99
PID 376 wrote to memory of 4856	376	2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe	99
PID 1876 wrote to memory of 1420	1876	zymoczas.exe	107
PID 1876 wrote to memory of 1420	1876	zymoczas.exe	107
PID 1876 wrote to memory of 1420	1876	zymoczas.exe	107
PID 1876 wrote to memory of 1420	1876	zymoczas.exe	107
PID 1876 wrote to memory of 1420	1876	zymoczas.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dtyboqxc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zymoczas.exe" C:\Windows\SysWOW64\dtyboqxc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dtyboqxc binPath= "C:\Windows\SysWOW64\dtyboqxc\zymoczas.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dtyboqxc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dtyboqxc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3300
- 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:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 376 -s 1040
  2⤵
  - Program crash
  PID:3400

C:\Windows\SysWOW64\dtyboqxc\zymoczas.exe
C:\Windows\SysWOW64\dtyboqxc\zymoczas.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_694b78eeab46dddf1b29828b11336439_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1876 -s 516
  2⤵
  - Program crash
  PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 376 -ip 376
1⤵
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1876 -ip 1876
1⤵
PID:924

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\zymoczas.exe

Filesize
14.2MB

MD5
aaffd2a64c8a04e4ae8ee718e7b5338f

SHA1
d1b5260f8fee477fe58e706512ffc729a897b2e0

SHA256
e7d8718b87a480d6c052ed7f96cc051f3094ee0c080f885be8b0d215393379db

SHA512
449fe03d6c0ac7bc0b31c412089858e4e26081533de16774b7d7a228e8a44d4175602fb553458e13b88ec856b15ed231e1a68ff137e00d3f794c03eecccfa9e6

Download Submit
memory/376-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/376-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/376-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/376-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/376-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/1420-14-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1420-16-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1420-17-0x0000000000A80000-0x0000000000A95000-memory.dmp

Filesize
84KB

Download
memory/1876-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1876-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1876-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1876-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads