tofsee | d86f71490a8c2a9ef435c9f3357bc7be2f07d7a485c0647c9eb0c894f7a5d222

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
06-02-2025 14:50

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General

Target

2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe
Size

12.9MB
MD5

f17438ac054c87900a20fe7ff982df84
SHA1

d242d99a7ceb3a7bd2b06b5e7a4fe7e862b5bf6e
SHA256

d86f71490a8c2a9ef435c9f3357bc7be2f07d7a485c0647c9eb0c894f7a5d222
SHA512

4d433e847f6c6f4292ba0d0a453c6624563148fbadf8bd2f4dc4d63e75106075242d7879796e01a6c3a3fb20f1a24a6589a3db0321807a967895ab59fca6837d
SSDEEP

6144:hLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQF:iTYe+D2jFu+iZoUFhAz

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\brcsasda = "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
3032	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\brcsasda\ImagePath = "C:\\Windows\\SysWOW64\\brcsasda\\easspedr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2828	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	easspedr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2828	2720	easspedr.exe	45

Launches sc.exe 3 IoCs

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

pid	Process
788	sc.exe
2708	sc.exe
2788	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	easspedr.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2100	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	32
PID 2204 wrote to memory of 2100	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	32
PID 2204 wrote to memory of 2100	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	32
PID 2204 wrote to memory of 2100	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	32
PID 2204 wrote to memory of 2164	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	34
PID 2204 wrote to memory of 2164	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	34
PID 2204 wrote to memory of 2164	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	34
PID 2204 wrote to memory of 2164	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	34
PID 2204 wrote to memory of 788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	36
PID 2204 wrote to memory of 788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	36
PID 2204 wrote to memory of 788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	36
PID 2204 wrote to memory of 788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	36
PID 2204 wrote to memory of 2708	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	38
PID 2204 wrote to memory of 2708	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	38
PID 2204 wrote to memory of 2708	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	38
PID 2204 wrote to memory of 2708	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	38
PID 2204 wrote to memory of 2788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	40
PID 2204 wrote to memory of 2788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	40
PID 2204 wrote to memory of 2788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	40
PID 2204 wrote to memory of 2788	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	40
PID 2204 wrote to memory of 3032	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	43
PID 2204 wrote to memory of 3032	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	43
PID 2204 wrote to memory of 3032	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	43
PID 2204 wrote to memory of 3032	2204	2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe	43
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45
PID 2720 wrote to memory of 2828	2720	easspedr.exe	45

C:\Users\Admin\AppData\Local\Temp\2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\brcsasda\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\easspedr.exe" C:\Windows\SysWOW64\brcsasda\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create brcsasda binPath= "C:\Windows\SysWOW64\brcsasda\easspedr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f17438ac054c87900a20fe7ff982df84_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description brcsasda "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start brcsasda
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:3032

C:\Windows\SysWOW64\brcsasda\easspedr.exe
C:\Windows\SysWOW64\brcsasda\easspedr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_f17438ac054c87900a20fe7ff982df84_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:2828

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\easspedr.exe

Filesize
13.6MB

MD5
eb5c85e3ef72cd8a17d66ee635dec743

SHA1
4fc6d0b7936828d347ceaf1cbcfc174654f291ee

SHA256
ac022f3e67da3d10f336e52afd6ea6b084c0f9b61d0de228f7b2e23c1d6df473

SHA512
940a33d0e68c6420f1ebb36c194a8bcf0a625fe75629e01bbf30471b44b7d6f43a2349d91d31c06fca52a707559ecd1e01af311be876f5be9f12b2b2cba9bd75

Download Submit
memory/2204-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2204-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2204-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2204-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2720-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2828-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2828-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2828-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2828-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads