tofsee | 6b62d421c0993ea2c1d4213c5fa44f08e381642fed36603a6fc8efafec955de3

Analysis

max time kernel
146s
max time network
123s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 19:46

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General

Target

2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe
Size

12.5MB
MD5

985d5a3c0a38f3438ecf1ee322381de5
SHA1

e1abddfb5e5550bc28d529a5ef293a575fb362a2
SHA256

6b62d421c0993ea2c1d4213c5fa44f08e381642fed36603a6fc8efafec955de3
SHA512

2b81be138cfe0501d45d7a7a5c1ee710971483e413ba41df5ea5f1d28b861cb0a722b47ee55feb04d1660f6888675008019379b56a0006ec66f395da6f29c850
SSDEEP

24576:dpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttV:3oo

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\lowcvnvb = "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
1720	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\lowcvnvb\ImagePath = "C:\\Windows\\SysWOW64\\lowcvnvb\\gsrfqaic.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2996	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	gsrfqaic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 2996	3024	gsrfqaic.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2920	sc.exe
2844	sc.exe
2928	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	sc.exe
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	gsrfqaic.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2144	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	29
PID 2660 wrote to memory of 2144	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	29
PID 2660 wrote to memory of 2816	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	31
PID 2660 wrote to memory of 2816	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	31
PID 2660 wrote to memory of 2816	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	31
PID 2660 wrote to memory of 2816	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	31
PID 2660 wrote to memory of 2920	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	33
PID 2660 wrote to memory of 2920	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	33
PID 2660 wrote to memory of 2920	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	33
PID 2660 wrote to memory of 2920	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	33
PID 2660 wrote to memory of 2844	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	35
PID 2660 wrote to memory of 2844	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	35
PID 2660 wrote to memory of 2844	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	35
PID 2660 wrote to memory of 2844	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	35
PID 2660 wrote to memory of 2928	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	37
PID 2660 wrote to memory of 2928	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	37
PID 2660 wrote to memory of 2928	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	37
PID 2660 wrote to memory of 2928	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	37
PID 2660 wrote to memory of 1720	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	40
PID 2660 wrote to memory of 1720	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	40
PID 2660 wrote to memory of 1720	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	40
PID 2660 wrote to memory of 1720	2660	2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe	40
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42
PID 3024 wrote to memory of 2996	3024	gsrfqaic.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lowcvnvb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gsrfqaic.exe" C:\Windows\SysWOW64\lowcvnvb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lowcvnvb binPath= "C:\Windows\SysWOW64\lowcvnvb\gsrfqaic.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lowcvnvb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lowcvnvb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- 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:1720

C:\Windows\SysWOW64\lowcvnvb\gsrfqaic.exe
C:\Windows\SysWOW64\lowcvnvb\gsrfqaic.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_985d5a3c0a38f3438ecf1ee322381de5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- 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:2996

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\gsrfqaic.exe

Filesize
10.5MB

MD5
6bf0ca3d8d075bf0e8be0f3ce58d2602

SHA1
ae59b75b0bf338a9c2d7683e02f667311e1b01be

SHA256
0321b336acf5578881fa1cb4ebe016e3a1dd28d1726a92cde9d6c69a3eaf2784

SHA512
b9aa8cb66dbc95146a56e1d1eac78644dc5baf55688fe6c6244109b40705e7413923efd45bce5ac495d7edccf75c0f61d75bec974261c7a58dd53b65ac36e320

Download Submit
memory/2660-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2660-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2660-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2660-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2660-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/2996-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2996-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2996-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2996-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2996-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3024-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads