tofsee | 21357848492562600821029f2e52e3b4670465097d6de080758a323b5014df7a

Analysis

max time kernel
144s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-01-2025 19:59

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General

Target

2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe
Size

13.5MB
MD5

5902771d2cea8460388d23fbcac64799
SHA1

22a47f9a53b3e1cb5670eb06416b4b8523bc50bd
SHA256

21357848492562600821029f2e52e3b4670465097d6de080758a323b5014df7a
SHA512

78a222f3f26577b74aa012869d9717f14d54ab7575816d7e385eed525091f0f828bc66d01028b79812a95e421f7994ee51feebcb268ff5eb7ba2cb6bca082c4e
SSDEEP

24576:bpomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:too

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\zyxkgfv = "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
2888	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\zyxkgfv\ImagePath = "C:\\Windows\\SysWOW64\\zyxkgfv\\ruaujufl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	ruaujufl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2212	2752	ruaujufl.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2388	sc.exe
2744	sc.exe
2820	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ruaujufl.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 2988	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	30
PID 1240 wrote to memory of 2988	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	30
PID 1240 wrote to memory of 2988	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	30
PID 1240 wrote to memory of 2988	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	30
PID 1240 wrote to memory of 3044	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	32
PID 1240 wrote to memory of 3044	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	32
PID 1240 wrote to memory of 3044	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	32
PID 1240 wrote to memory of 3044	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	32
PID 1240 wrote to memory of 2388	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	34
PID 1240 wrote to memory of 2388	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	34
PID 1240 wrote to memory of 2388	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	34
PID 1240 wrote to memory of 2388	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	34
PID 1240 wrote to memory of 2744	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	37
PID 1240 wrote to memory of 2744	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	37
PID 1240 wrote to memory of 2744	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	37
PID 1240 wrote to memory of 2744	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	37
PID 1240 wrote to memory of 2820	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	39
PID 1240 wrote to memory of 2820	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	39
PID 1240 wrote to memory of 2820	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	39
PID 1240 wrote to memory of 2820	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	39
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 2752 wrote to memory of 2212	2752	ruaujufl.exe	42
PID 1240 wrote to memory of 2888	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	43
PID 1240 wrote to memory of 2888	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	43
PID 1240 wrote to memory of 2888	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	43
PID 1240 wrote to memory of 2888	1240	2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zyxkgfv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ruaujufl.exe" C:\Windows\SysWOW64\zyxkgfv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zyxkgfv binPath= "C:\Windows\SysWOW64\zyxkgfv\ruaujufl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zyxkgfv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zyxkgfv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2820
- 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:2888

C:\Windows\SysWOW64\zyxkgfv\ruaujufl.exe
C:\Windows\SysWOW64\zyxkgfv\ruaujufl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_5902771d2cea8460388d23fbcac64799_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2752
- 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:2212

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\ruaujufl.exe

Filesize
11.3MB

MD5
fe4c125a724d2fa1b12545f824af5fb1

SHA1
5480823b559f9bc42f548758d1f11306ee89ebfd

SHA256
7da0eac6040ef79d16ada14a87cb84feed29370e2426fad7f737dd0b2729c4e4

SHA512
1552e696ee89f5695b5614deebd2aa481a72d77bc81cc5c08de1ec901993360dce657afe0b89e4d4e660713dc7aabac3b31b034eeb53e29aada04c845231095d

Download Submit
memory/1240-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1240-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1240-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1240-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/1240-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2212-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2212-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2212-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2212-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2212-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2752-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads