tofsee | 97b12ec9acdaf954e9b4146a812dee8769dad50e1518505098fea65e0d612623

Analysis

max time kernel
144s
max time network
123s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 10:48

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General

Target

2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe
Size

11.3MB
MD5

c5c84333e789e6a438348a5486a6d01c
SHA1

29f733539b5bf6f1cd2b9f26598e50ac8eb9e922
SHA256

97b12ec9acdaf954e9b4146a812dee8769dad50e1518505098fea65e0d612623
SHA512

413f2af7181bdc2940e05a98f3911aab7d71dc61c8f6199290f552bff7b0d00842065b251528ab6ccc787e275836a9286b022ba1e3ce04c2a79d354c7a4cc020
SSDEEP

24576:FEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZD:Ofot

Score

10^/10

tofsee defense_evasion discovery 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

defense_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\afuvcdr = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2752	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\afuvcdr\ImagePath = "C:\\Windows\\SysWOW64\\afuvcdr\\wfzewvqm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2704	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2852	wfzewvqm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 2704	2852	wfzewvqm.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
568	sc.exe
2864	sc.exe
2748	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

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	sc.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	wfzewvqm.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	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2372	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	30
PID 2384 wrote to memory of 2372	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	30
PID 2384 wrote to memory of 2372	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	30
PID 2384 wrote to memory of 2372	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	30
PID 2384 wrote to memory of 2400	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	32
PID 2384 wrote to memory of 2400	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	32
PID 2384 wrote to memory of 2400	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	32
PID 2384 wrote to memory of 2400	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	32
PID 2384 wrote to memory of 568	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	34
PID 2384 wrote to memory of 568	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	34
PID 2384 wrote to memory of 568	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	34
PID 2384 wrote to memory of 568	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	34
PID 2384 wrote to memory of 2864	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	36
PID 2384 wrote to memory of 2864	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	36
PID 2384 wrote to memory of 2864	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	36
PID 2384 wrote to memory of 2864	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	36
PID 2384 wrote to memory of 2748	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	38
PID 2384 wrote to memory of 2748	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	38
PID 2384 wrote to memory of 2748	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	38
PID 2384 wrote to memory of 2748	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	38
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2852 wrote to memory of 2704	2852	wfzewvqm.exe	41
PID 2384 wrote to memory of 2752	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	42
PID 2384 wrote to memory of 2752	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	42
PID 2384 wrote to memory of 2752	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	42
PID 2384 wrote to memory of 2752	2384	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\afuvcdr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wfzewvqm.exe" C:\Windows\SysWOW64\afuvcdr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create afuvcdr binPath= "C:\Windows\SysWOW64\afuvcdr\wfzewvqm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description afuvcdr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start afuvcdr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- 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:2752

C:\Windows\SysWOW64\afuvcdr\wfzewvqm.exe
C:\Windows\SysWOW64\afuvcdr\wfzewvqm.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2852
- 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:2704

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\wfzewvqm.exe

Filesize
11.7MB

MD5
237f5d1c3c1d86bc4f16f07b74177dca

SHA1
16fadc388d4ac6aa858bbe23500d2e9b38669808

SHA256
d76768a7dc9d6398d7f9e2640683b9e2f5b5c844f4853e203d364fd3556cd896

SHA512
b8c47357502675422dba8e35faa205e74879e2a962723ccfa97e85cce179413d776e58cc9482f819717c2d031351f322a3e57ed35b3b1c50f2d61d60b0cdab6a

Download Submit
memory/2384-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2384-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2384-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2384-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2704-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2852-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads