tofsee | b598f6bd5a40129cc3e11e473dc774d3ad4c5c0ae45850ae4b2a282de7051af3

Analysis

max time kernel
147s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 18:24

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General

Target

2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe
Size

13.4MB
MD5

085c0df426a67559b07390c7e519fa04
SHA1

f7461925cf572b1a4e6185878699a1709d5afa90
SHA256

b598f6bd5a40129cc3e11e473dc774d3ad4c5c0ae45850ae4b2a282de7051af3
SHA512

52643632a7adecadcebeaf57e0334da1dc0a61aec3da1b8a95153b63e9edc49a86a3f341a16069e4e79d505f58876bcda9e722e30e4471ce96f2d48b93c67086
SSDEEP

3072:aLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:DOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\geflrazf = "0"	svchost.exe

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
2908	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\geflrazf\ImagePath = "C:\\Windows\\SysWOW64\\geflrazf\\bvvmxgxz.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	bvvmxgxz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2888 set thread context of 2800	2888	bvvmxgxz.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2824	sc.exe
2828	sc.exe
2772	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

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	2024-12-25_085c0df426a67559b07390c7e519fa04_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bvvmxgxz.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 30 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2072	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 3044 wrote to memory of 2072	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 3044 wrote to memory of 2072	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 3044 wrote to memory of 2072	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	30
PID 3044 wrote to memory of 2016	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 3044 wrote to memory of 2016	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 3044 wrote to memory of 2016	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 3044 wrote to memory of 2016	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	32
PID 3044 wrote to memory of 2824	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 3044 wrote to memory of 2824	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 3044 wrote to memory of 2824	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 3044 wrote to memory of 2824	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	34
PID 3044 wrote to memory of 2828	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 3044 wrote to memory of 2828	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 3044 wrote to memory of 2828	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 3044 wrote to memory of 2828	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	36
PID 3044 wrote to memory of 2772	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 3044 wrote to memory of 2772	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 3044 wrote to memory of 2772	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 3044 wrote to memory of 2772	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	38
PID 3044 wrote to memory of 2908	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	41
PID 3044 wrote to memory of 2908	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	41
PID 3044 wrote to memory of 2908	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	41
PID 3044 wrote to memory of 2908	3044	2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe	41
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43
PID 2888 wrote to memory of 2800	2888	bvvmxgxz.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\geflrazf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bvvmxgxz.exe" C:\Windows\SysWOW64\geflrazf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create geflrazf binPath= "C:\Windows\SysWOW64\geflrazf\bvvmxgxz.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description geflrazf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start geflrazf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2772
- 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:2908

C:\Windows\SysWOW64\geflrazf\bvvmxgxz.exe
C:\Windows\SysWOW64\geflrazf\bvvmxgxz.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-25_085c0df426a67559b07390c7e519fa04_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bvvmxgxz.exe

Filesize
13.4MB

MD5
bf9e3969461987ba751e1cd8104054c8

SHA1
92f1e691dd55e2486cfebc15507a40b56f407e03

SHA256
93cf22f3798685c367dee4bbf73edb52473d1e19571d9e0fda7012f169782311

SHA512
21495707d2ff7dec300d69ff4f7149306f209252e04ae1bb04dc433d8586c4fcfd7bc564cc770f72ac92c931b1ba92a30cf5c9d13546a2fb65a0b616a66ebdf3

Download Submit
memory/2800-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2800-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2888-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3044-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3044-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/3044-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3044-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads