tofsee | 949c70d199e8ec085e4c0072157006721a0f435640dff45384dbe28d564a1893

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 18:50

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General

Target

2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe
Size

10.1MB
MD5

6c561d7ee826330e51b8a80c25440437
SHA1

8bcf90e5d52f4e388b2f4e18de7a2a2b6490640f
SHA256

949c70d199e8ec085e4c0072157006721a0f435640dff45384dbe28d564a1893
SHA512

61b743d97759cddcba92589ca934e8afe83f84521b4670e7c4bd29248ee3b3a2accf0055a5a9a23dfdb8a16df1856898af52ecdddbfa4ffb0bb1abf258d9c707
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\znswlqyo = "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
2552	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\znswlqyo\ImagePath = "C:\\Windows\\SysWOW64\\znswlqyo\\ucrvigpp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
3000	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2808	ucrvigpp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 3000	2808	ucrvigpp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2920	sc.exe
2828	sc.exe
888	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	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.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	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	ucrvigpp.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2796	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	30
PID 2212 wrote to memory of 2796	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	30
PID 2212 wrote to memory of 2796	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	30
PID 2212 wrote to memory of 2796	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	30
PID 2212 wrote to memory of 2928	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	32
PID 2212 wrote to memory of 2928	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	32
PID 2212 wrote to memory of 2928	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	32
PID 2212 wrote to memory of 2928	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	32
PID 2212 wrote to memory of 2920	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	34
PID 2212 wrote to memory of 2920	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	34
PID 2212 wrote to memory of 2920	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	34
PID 2212 wrote to memory of 2920	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	34
PID 2212 wrote to memory of 2828	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	36
PID 2212 wrote to memory of 2828	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	36
PID 2212 wrote to memory of 2828	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	36
PID 2212 wrote to memory of 2828	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	36
PID 2212 wrote to memory of 888	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	38
PID 2212 wrote to memory of 888	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	38
PID 2212 wrote to memory of 888	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	38
PID 2212 wrote to memory of 888	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	38
PID 2212 wrote to memory of 2552	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	41
PID 2212 wrote to memory of 2552	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	41
PID 2212 wrote to memory of 2552	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	41
PID 2212 wrote to memory of 2552	2212	2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe	41
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43
PID 2808 wrote to memory of 3000	2808	ucrvigpp.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\znswlqyo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ucrvigpp.exe" C:\Windows\SysWOW64\znswlqyo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create znswlqyo binPath= "C:\Windows\SysWOW64\znswlqyo\ucrvigpp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-19_6c561d7ee826330e51b8a80c25440437_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 znswlqyo "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 znswlqyo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:888
- 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:2552

C:\Windows\SysWOW64\znswlqyo\ucrvigpp.exe
C:\Windows\SysWOW64\znswlqyo\ucrvigpp.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-19_6c561d7ee826330e51b8a80c25440437_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- 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:3000

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\ucrvigpp.exe

Filesize
14.9MB

MD5
534c52aa7393cf593f0ac0d7c65a6e6a

SHA1
4d9413649a9272ed560ded31293812b7bb92cc5b

SHA256
9c32e3613b82dd75188547dde095f478b25ad07ad9ff09db0cd553354e25199f

SHA512
dcc80874dbe193e9c60eb1463319dee22b1fac360a7264e5573033c0efe84b74a91b1fcfc145b45550512ad8cc445315edc507cf8f00a84a39beb07fe9b9726b

Download Submit
memory/2212-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2212-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2212-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2212-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2212-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2212-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/2808-17-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3000-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3000-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3000-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads