tofsee | df205ed8f7724b3a6a00a9fecca1aeef1077885af5a9be0a85a910920919701e

General

Target

2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe
Size

13.3MB
MD5

6aedcabbe6c76777301c851da07c6c3c
SHA1

844aaac0d4383b8df6bf5ebe266ed8b704f76bb2
SHA256

df205ed8f7724b3a6a00a9fecca1aeef1077885af5a9be0a85a910920919701e
SHA512

0f940b01a7d5695ad414b818cf082de7d37e36d5b715024b1fe8650f45613facfb03ca006efa0962e35fd9f47d524f2af55fc1cb350676db903bff6fe6c221ce
SSDEEP

3072:RLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:UOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3440	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\ypxvdfw\ImagePath = "C:\\Windows\\SysWOW64\\ypxvdfw\\zmyvobgq.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe

Deletes itself 1 IoCs

pid	Process
664	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	zmyvobgq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5112 set thread context of 664	5112	zmyvobgq.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
2328	sc.exe
2020	sc.exe
1996	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4224	2868	WerFault.exe	84
2016	5112	WerFault.exe	95

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zmyvobgq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 3560	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	85
PID 2868 wrote to memory of 3560	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	85
PID 2868 wrote to memory of 3560	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	85
PID 2868 wrote to memory of 3092	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	87
PID 2868 wrote to memory of 3092	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	87
PID 2868 wrote to memory of 3092	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	87
PID 2868 wrote to memory of 2328	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	89
PID 2868 wrote to memory of 2328	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	89
PID 2868 wrote to memory of 2328	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	89
PID 2868 wrote to memory of 2020	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	91
PID 2868 wrote to memory of 2020	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	91
PID 2868 wrote to memory of 2020	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	91
PID 2868 wrote to memory of 1996	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	93
PID 2868 wrote to memory of 1996	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	93
PID 2868 wrote to memory of 1996	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	93
PID 2868 wrote to memory of 3440	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	96
PID 2868 wrote to memory of 3440	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	96
PID 2868 wrote to memory of 3440	2868	2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe	96
PID 5112 wrote to memory of 664	5112	zmyvobgq.exe	102
PID 5112 wrote to memory of 664	5112	zmyvobgq.exe	102
PID 5112 wrote to memory of 664	5112	zmyvobgq.exe	102
PID 5112 wrote to memory of 664	5112	zmyvobgq.exe	102
PID 5112 wrote to memory of 664	5112	zmyvobgq.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ypxvdfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\ypxvdfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ypxvdfw binPath= "C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ypxvdfw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ypxvdfw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1996
- 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:3440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 1220
  2⤵
  - Program crash
  PID:4224

C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe
C:\Windows\SysWOW64\ypxvdfw\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_6aedcabbe6c76777301c851da07c6c3c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 548
  2⤵
  - Program crash
  PID:2016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2868 -ip 2868
1⤵
PID:2336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5112 -ip 5112
1⤵
PID:116

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\zmyvobgq.exe

Filesize
13.9MB

MD5
cf97622a7a6a5b037e2001a61fff643d

SHA1
08e0bb60f09aff2eadc07adeaa9910c3fc6c46bb

SHA256
50cde2309c4b1d1f44160d8f9d9b67bb0111d0a588de63a4f638d31022ffacef

SHA512
5ab125f2eff0f50e13cea2130136b543b56b05044da19a352c53b15a3660bea9ca18c7e7c36d774f2b75073e8450cb4067e365f023ad1c640afeed3987b23ba4

Download Submit
memory/664-14-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/664-17-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/664-16-0x0000000000840000-0x0000000000855000-memory.dmp

Filesize
84KB

Download
memory/2868-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2868-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/2868-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/2868-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2868-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2868-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/5112-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5112-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5112-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5112-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads