tofsee | 2e612115667e2fe1c19c2b791593855ef50b32dc19d0dfff5dae132baacfa02c

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 19:59

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General

Target

2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe
Size

11.7MB
MD5

28a46a2947017a0a320d20e5f9305286
SHA1

f7c5eed53f17949d494de2fa64cf0d27341c4876
SHA256

2e612115667e2fe1c19c2b791593855ef50b32dc19d0dfff5dae132baacfa02c
SHA512

f9fe32b1d60ab5c7cdf547a188afab4ef5b357f10e37342f36d5e52f939bc708a4c7804f6426eb550a757cfc5d069cc1ced029b02df88f77fb493225fc4c8e46
SSDEEP

196608:jyXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:OXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn

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\zdlldmh = "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
2920	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\zdlldmh\ImagePath = "C:\\Windows\\SysWOW64\\zdlldmh\\ykjxisau.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	ykjxisau.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2836	2748	ykjxisau.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2452	sc.exe
2760	sc.exe
2848	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	2025-02-01_28a46a2947017a0a320d20e5f9305286_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ykjxisau.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2684	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	30
PID 1972 wrote to memory of 2684	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	30
PID 1972 wrote to memory of 2684	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	30
PID 1972 wrote to memory of 2684	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	30
PID 1972 wrote to memory of 2880	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	32
PID 1972 wrote to memory of 2880	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	32
PID 1972 wrote to memory of 2880	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	32
PID 1972 wrote to memory of 2880	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	32
PID 1972 wrote to memory of 2452	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	34
PID 1972 wrote to memory of 2452	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	34
PID 1972 wrote to memory of 2452	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	34
PID 1972 wrote to memory of 2452	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	34
PID 1972 wrote to memory of 2760	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	36
PID 1972 wrote to memory of 2760	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	36
PID 1972 wrote to memory of 2760	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	36
PID 1972 wrote to memory of 2760	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	36
PID 1972 wrote to memory of 2848	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	38
PID 1972 wrote to memory of 2848	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	38
PID 1972 wrote to memory of 2848	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	38
PID 1972 wrote to memory of 2848	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	38
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 2748 wrote to memory of 2836	2748	ykjxisau.exe	41
PID 1972 wrote to memory of 2920	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	42
PID 1972 wrote to memory of 2920	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	42
PID 1972 wrote to memory of 2920	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	42
PID 1972 wrote to memory of 2920	1972	2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zdlldmh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ykjxisau.exe" C:\Windows\SysWOW64\zdlldmh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zdlldmh binPath= "C:\Windows\SysWOW64\zdlldmh\ykjxisau.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zdlldmh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zdlldmh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:2920

C:\Windows\SysWOW64\zdlldmh\ykjxisau.exe
C:\Windows\SysWOW64\zdlldmh\ykjxisau.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_28a46a2947017a0a320d20e5f9305286_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- 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:2836

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\ykjxisau.exe

Filesize
13.2MB

MD5
6937aad9b667b4ba21f4d2d219ea3641

SHA1
5248524013ad78970facb6b83e769a78a8433ead

SHA256
120f21f223ace3fae0054b1e17a5416602f1c2d16e2a774d4746be56d3120a28

SHA512
9a94aee744357a2452465639e6d0ca7a6e94805f403169fa13bb799c6e72a6c0c1745b512e711de493dc0c10a1603902991ad7919ded3927da294e4560e24fac

Download Submit
memory/1972-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1972-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1972-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1972-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1972-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/1972-16-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/1972-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2748-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2836-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2836-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads