tofsee | f2d21e6c301447b4e60fd647c5e054424006507a393edcf6a9f4555f887e8506

General

Target

2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe
Size

10.3MB
MD5

b10aa5bc73f65cf6252bca38fb5763fa
SHA1

52ad45d0b072c40fe7316eb9113b5f4467c7e839
SHA256

f2d21e6c301447b4e60fd647c5e054424006507a393edcf6a9f4555f887e8506
SHA512

2ac37c84ce560eaee6b577bfafb2de5ae9344cba5b85fad40cff46d7ecb0a254c715fedd9c846f83770f53f700e5aa4e3aaae54f186932a03e7de0e546a29656
SSDEEP

49152:NqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPO:NqtYc3x

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
3488	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\vxzzyhb\ImagePath = "C:\\Windows\\SysWOW64\\vxzzyhb\\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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe

Deletes itself 1 IoCs

pid	Process
1460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4636	zmyvobgq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4636 set thread context of 1460	4636	zmyvobgq.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3916	sc.exe
1164	sc.exe
2328	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
2432	4876	WerFault.exe	84
4688	4636	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zmyvobgq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 608	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	87
PID 4876 wrote to memory of 608	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	87
PID 4876 wrote to memory of 608	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	87
PID 4876 wrote to memory of 2296	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	90
PID 4876 wrote to memory of 2296	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	90
PID 4876 wrote to memory of 2296	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	90
PID 4876 wrote to memory of 3916	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	93
PID 4876 wrote to memory of 3916	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	93
PID 4876 wrote to memory of 3916	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	93
PID 4876 wrote to memory of 1164	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	95
PID 4876 wrote to memory of 1164	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	95
PID 4876 wrote to memory of 1164	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	95
PID 4876 wrote to memory of 2328	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	97
PID 4876 wrote to memory of 2328	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	97
PID 4876 wrote to memory of 2328	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	97
PID 4636 wrote to memory of 1460	4636	zmyvobgq.exe	100
PID 4636 wrote to memory of 1460	4636	zmyvobgq.exe	100
PID 4636 wrote to memory of 1460	4636	zmyvobgq.exe	100
PID 4636 wrote to memory of 1460	4636	zmyvobgq.exe	100
PID 4636 wrote to memory of 1460	4636	zmyvobgq.exe	100
PID 4876 wrote to memory of 3488	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	102
PID 4876 wrote to memory of 3488	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	102
PID 4876 wrote to memory of 3488	4876	2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vxzzyhb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\vxzzyhb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vxzzyhb binPath= "C:\Windows\SysWOW64\vxzzyhb\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vxzzyhb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vxzzyhb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2328
- 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:3488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 1220
  2⤵
  - Program crash
  PID:2432

C:\Windows\SysWOW64\vxzzyhb\zmyvobgq.exe
C:\Windows\SysWOW64\vxzzyhb\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_b10aa5bc73f65cf6252bca38fb5763fa_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 508
  2⤵
  - Program crash
  PID:4688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4876 -ip 4876
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4636 -ip 4636
1⤵
PID:4652

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
10.7MB

MD5
bffd8c5db26d1fd2963ee819b9a960f5

SHA1
45c78c56eec3ff3ea6e3c03fd26e64fd6829b8ea

SHA256
d4859bd62d301b90904668ef4f9e3588d2e20c8f5f510874cf692998f642b91a

SHA512
0c279f9873676616f6ae56acfe7ff544eac43ab37afa14333042e57d3a0533bbf7974fa5f80698db32c31cd2bd9f412dab27fe2d4be2c8084f53ec20a83f94a0

Download Submit
memory/1460-8-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/1460-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/1460-15-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/4636-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4876-1-0x0000000002FC0000-0x00000000030C0000-memory.dmp

Filesize
1024KB

Download
memory/4876-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4876-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4876-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4876-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4876-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads