tofsee | 2923852431766d3da326baf4bffac6a92a0092e87be7f0f451e4633cb755626b

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29/01/2025, 17:43

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General

Target

2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe
Size

12.8MB
MD5

b8cbe229db5f5116bb60fa4475e58ea8
SHA1

3fcce4344791f791ba62199ad71297387936f038
SHA256

2923852431766d3da326baf4bffac6a92a0092e87be7f0f451e4633cb755626b
SHA512

6fc0df22623afd501ca73b07790a2bb8f92e700294ba9a9aa6e119a9597596d2a7d10dc28fe650eedc718f118810fd15c349068fe78d95847dfa014b1120ec82
SSDEEP

24576:NEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZj:2fot

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\zupoyvhs = "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\zupoyvhs\ImagePath = "C:\\Windows\\SysWOW64\\zupoyvhs\\sstezayg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	sstezayg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2584	2720	sstezayg.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
3056	sc.exe
2764	sc.exe
2856	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	sstezayg.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	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	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2960	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	30
PID 1992 wrote to memory of 2960	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	30
PID 1992 wrote to memory of 2960	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	30
PID 1992 wrote to memory of 2960	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	30
PID 1992 wrote to memory of 2884	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	32
PID 1992 wrote to memory of 2884	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	32
PID 1992 wrote to memory of 2884	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	32
PID 1992 wrote to memory of 2884	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	32
PID 1992 wrote to memory of 3056	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	34
PID 1992 wrote to memory of 3056	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	34
PID 1992 wrote to memory of 3056	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	34
PID 1992 wrote to memory of 3056	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	34
PID 1992 wrote to memory of 2764	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	36
PID 1992 wrote to memory of 2764	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	36
PID 1992 wrote to memory of 2764	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	36
PID 1992 wrote to memory of 2764	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	36
PID 1992 wrote to memory of 2856	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	38
PID 1992 wrote to memory of 2856	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	38
PID 1992 wrote to memory of 2856	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	38
PID 1992 wrote to memory of 2856	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	38
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 2720 wrote to memory of 2584	2720	sstezayg.exe	41
PID 1992 wrote to memory of 2752	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	42
PID 1992 wrote to memory of 2752	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	42
PID 1992 wrote to memory of 2752	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	42
PID 1992 wrote to memory of 2752	1992	2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zupoyvhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sstezayg.exe" C:\Windows\SysWOW64\zupoyvhs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zupoyvhs binPath= "C:\Windows\SysWOW64\zupoyvhs\sstezayg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zupoyvhs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zupoyvhs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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\zupoyvhs\sstezayg.exe
C:\Windows\SysWOW64\zupoyvhs\sstezayg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_b8cbe229db5f5116bb60fa4475e58ea8_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- 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:2584

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\sstezayg.exe

Filesize
13.9MB

MD5
686895e795eae2b68deabd35862ae94a

SHA1
96f626d44d2cd042397da3e5b378d68b2fae5bc1

SHA256
2f6a585609954a8cc41c2221cbe83bd13ae7e259e19a60d0b80922e748b8c258

SHA512
3a5d8ef9206d4c693696d72ea4a95dc3fc1d5f2705576be3293de0b0baf376895c8e8c5e4a46e12925b2a91809e137ac3cfecdb6bcac7a39e76ee45efa5acb47

Download Submit
memory/1992-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1992-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1992-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1992-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1992-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/1992-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2584-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2584-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2720-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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