tofsee | 3d2272265667eadf95c4998225f5ace4d9ef3afc0994de38319ac123c672a9df

Analysis

max time kernel
148s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-01-2025 18:41

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General

Target

2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe
Size

11.3MB
MD5

7e811bc48a3afad994b009290155bd03
SHA1

d24e61a923e21d81f8e555ac0d7b3d7341177609
SHA256

3d2272265667eadf95c4998225f5ace4d9ef3afc0994de38319ac123c672a9df
SHA512

416378350a3546622bbc8b88095845016f58abe386c0a5288a8120ee938b96ea8353f488ea11f037e1f9ddde51fd795820a9835730bef66ff4ceee1d152b7d18
SSDEEP

49152:aqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:aqtYc3

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\ygzmwvxp = "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
3060	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\ygzmwvxp\ImagePath = "C:\\Windows\\SysWOW64\\ygzmwvxp\\yavbuhr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2712	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	yavbuhr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2712	2876	yavbuhr.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2104	sc.exe
2464	sc.exe
2060	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	yavbuhr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 796 wrote to memory of 2924	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	29
PID 796 wrote to memory of 2924	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	29
PID 796 wrote to memory of 2924	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	29
PID 796 wrote to memory of 2924	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	29
PID 796 wrote to memory of 2900	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	31
PID 796 wrote to memory of 2900	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	31
PID 796 wrote to memory of 2900	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	31
PID 796 wrote to memory of 2900	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	31
PID 796 wrote to memory of 2104	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	33
PID 796 wrote to memory of 2104	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	33
PID 796 wrote to memory of 2104	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	33
PID 796 wrote to memory of 2104	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	33
PID 796 wrote to memory of 2464	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	35
PID 796 wrote to memory of 2464	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	35
PID 796 wrote to memory of 2464	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	35
PID 796 wrote to memory of 2464	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	35
PID 796 wrote to memory of 2060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	37
PID 796 wrote to memory of 2060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	37
PID 796 wrote to memory of 2060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	37
PID 796 wrote to memory of 2060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	37
PID 796 wrote to memory of 3060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	40
PID 796 wrote to memory of 3060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	40
PID 796 wrote to memory of 3060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	40
PID 796 wrote to memory of 3060	796	2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe	40
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42
PID 2876 wrote to memory of 2712	2876	yavbuhr.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:796
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ygzmwvxp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yavbuhr.exe" C:\Windows\SysWOW64\ygzmwvxp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ygzmwvxp binPath= "C:\Windows\SysWOW64\ygzmwvxp\yavbuhr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ygzmwvxp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ygzmwvxp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2060
- 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:3060

C:\Windows\SysWOW64\ygzmwvxp\yavbuhr.exe
C:\Windows\SysWOW64\ygzmwvxp\yavbuhr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_7e811bc48a3afad994b009290155bd03_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2712

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\yavbuhr.exe

Filesize
11.8MB

MD5
f875c7d08c0f94e13c71f1e3ff40ef30

SHA1
751f3c253167cb582f1365dd11cf4002c061d6fe

SHA256
466343c32ebe7c25f8d753067c97cdcf8ece4f09027bd4a4b0106fd04127b26c

SHA512
d1652c02aabfcc458e734d833874bf8d6c7be2e3c56215a88039cc672bdc725925b5d582ea588e829a26a2235fd169b7fc869a752afec8e621f76d31f5ad3fd6

Download Submit
memory/796-7-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/796-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/796-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/796-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/796-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/796-1-0x0000000002F40000-0x0000000003040000-memory.dmp

Filesize
1024KB

Download
memory/2712-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2712-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2712-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2876-17-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads