tofsee | 03dcd9a4ca3d6cbe61a3cdf5684649233e6036a584ed389739088adf58530998

General

Target

2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe
Size

13.4MB
MD5

4858645e5dfe2b3c29b52ad93c9a0167
SHA1

3a33f59845824f55e75501dcc58fe9db7510bb21
SHA256

03dcd9a4ca3d6cbe61a3cdf5684649233e6036a584ed389739088adf58530998
SHA512

591a17c10b1dd9563f8d0d9372cd3a575196b8f84738a4b0087e78e62f3f704364132e2aeee1bd2fab494ca09b3a131835e369ab3b214edee3f2e6996083d23d
SSDEEP

3072:NLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:QOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
2540	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\izrbveyh\ImagePath = "C:\\Windows\\SysWOW64\\izrbveyh\\easspedr.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe

Deletes itself 1 IoCs

pid	Process
4460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	easspedr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2340 set thread context of 4460	2340	easspedr.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4364	sc.exe
4680	sc.exe
3084	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2076	2724	WerFault.exe	82
2452	2340	WerFault.exe	96

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	easspedr.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.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 23 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 32	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	86
PID 2724 wrote to memory of 32	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	86
PID 2724 wrote to memory of 32	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	86
PID 2724 wrote to memory of 2792	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	88
PID 2724 wrote to memory of 2792	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	88
PID 2724 wrote to memory of 2792	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	88
PID 2724 wrote to memory of 4364	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	90
PID 2724 wrote to memory of 4364	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	90
PID 2724 wrote to memory of 4364	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	90
PID 2724 wrote to memory of 4680	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	92
PID 2724 wrote to memory of 4680	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	92
PID 2724 wrote to memory of 4680	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	92
PID 2724 wrote to memory of 3084	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	94
PID 2724 wrote to memory of 3084	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	94
PID 2724 wrote to memory of 3084	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	94
PID 2724 wrote to memory of 2540	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	97
PID 2724 wrote to memory of 2540	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	97
PID 2724 wrote to memory of 2540	2724	2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe	97
PID 2340 wrote to memory of 4460	2340	easspedr.exe	102
PID 2340 wrote to memory of 4460	2340	easspedr.exe	102
PID 2340 wrote to memory of 4460	2340	easspedr.exe	102
PID 2340 wrote to memory of 4460	2340	easspedr.exe	102
PID 2340 wrote to memory of 4460	2340	easspedr.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\izrbveyh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:32
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\easspedr.exe" C:\Windows\SysWOW64\izrbveyh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create izrbveyh binPath= "C:\Windows\SysWOW64\izrbveyh\easspedr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description izrbveyh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start izrbveyh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3084
- 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:2540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2724 -s 888
  2⤵
  - Program crash
  PID:2076

C:\Windows\SysWOW64\izrbveyh\easspedr.exe
C:\Windows\SysWOW64\izrbveyh\easspedr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_4858645e5dfe2b3c29b52ad93c9a0167_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 520
  2⤵
  - Program crash
  PID:2452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2724 -ip 2724
1⤵
PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2340 -ip 2340
1⤵
PID:2444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\easspedr.exe

Filesize
12.9MB

MD5
cdd56dd26d450750a8ba6d860154f20d

SHA1
c705b715e1ea84bef0524de5d0ad0ae2ae344c67

SHA256
89e8eb038565b3f3c0b00879f571b27e5e4d51027792f33073366d8897ab72cc

SHA512
6cb92cd176487bfc22177af351406c4d4031cb94f11861a48ba9b2cb7532de5781dfe337d2276ca6add035f7a8138618f855ecddf296f4fa1adceda054e8db92

Download Submit
memory/2340-8-0x00007FF8A0330000-0x00007FF8A0525000-memory.dmp

Filesize
2.0MB

Download
memory/2340-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2724-1-0x00007FF8A0330000-0x00007FF8A0525000-memory.dmp

Filesize
2.0MB

Download
memory/2724-5-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2724-6-0x00007FF8A0330000-0x00007FF8A0525000-memory.dmp

Filesize
2.0MB

Download
memory/4460-9-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/4460-11-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download
memory/4460-12-0x0000000000380000-0x0000000000395000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads