tofsee | ec9ac642df40ab28d21938e59b719607beac2bafa200591f58df8d25eebaa3e5

General

Target

2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe
Size

14.6MB
MD5

83fb012a3af17f7ee03fa6b70fb92d99
SHA1

23e602b8d722fb7ef210a986e5b652ba3dc2e02d
SHA256

ec9ac642df40ab28d21938e59b719607beac2bafa200591f58df8d25eebaa3e5
SHA512

542d239756bb821d579ea836633122c5334c9c93b69e1b9355add7a56561351cd61643d85b71d239e596d94bf172aabcb974a9131fb43d1a247d18915f745b3a
SSDEEP

24576:x6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQw:YWdLQk

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
3320	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\sjbkxesn\ImagePath = "C:\\Windows\\SysWOW64\\sjbkxesn\\zeojdpmo.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2124	zeojdpmo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2124 set thread context of 2452	2124	zeojdpmo.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
3468	sc.exe
4244	sc.exe
2712	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
4284	3556	WerFault.exe	83
3768	2124	WerFault.exe	97

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	zeojdpmo.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.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 23 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 3260	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	87
PID 3556 wrote to memory of 3260	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	87
PID 3556 wrote to memory of 3260	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	87
PID 3556 wrote to memory of 3764	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	89
PID 3556 wrote to memory of 3764	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	89
PID 3556 wrote to memory of 3764	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	89
PID 3556 wrote to memory of 3468	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	91
PID 3556 wrote to memory of 3468	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	91
PID 3556 wrote to memory of 3468	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	91
PID 3556 wrote to memory of 4244	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	93
PID 3556 wrote to memory of 4244	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	93
PID 3556 wrote to memory of 4244	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	93
PID 3556 wrote to memory of 2712	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	95
PID 3556 wrote to memory of 2712	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	95
PID 3556 wrote to memory of 2712	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	95
PID 3556 wrote to memory of 3320	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	98
PID 3556 wrote to memory of 3320	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	98
PID 3556 wrote to memory of 3320	3556	2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe	98
PID 2124 wrote to memory of 2452	2124	zeojdpmo.exe	108
PID 2124 wrote to memory of 2452	2124	zeojdpmo.exe	108
PID 2124 wrote to memory of 2452	2124	zeojdpmo.exe	108
PID 2124 wrote to memory of 2452	2124	zeojdpmo.exe	108
PID 2124 wrote to memory of 2452	2124	zeojdpmo.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sjbkxesn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3260
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zeojdpmo.exe" C:\Windows\SysWOW64\sjbkxesn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sjbkxesn binPath= "C:\Windows\SysWOW64\sjbkxesn\zeojdpmo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sjbkxesn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sjbkxesn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2712
- 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:3320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3556 -s 592
  2⤵
  - Program crash
  PID:4284

C:\Windows\SysWOW64\sjbkxesn\zeojdpmo.exe
C:\Windows\SysWOW64\sjbkxesn\zeojdpmo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_83fb012a3af17f7ee03fa6b70fb92d99_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 516
  2⤵
  - Program crash
  PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3556 -ip 3556
1⤵
PID:1768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2124 -ip 2124
1⤵
PID:2880

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\zeojdpmo.exe

Filesize
11.3MB

MD5
7d1dd579fff1ea62f386c8814a7fad5e

SHA1
d03a37bbf99d07d7a92a9303ab29f46084b95b46

SHA256
fcb4a6f4220b956708d1a7f3fce9286b1eab14ce6cf8145c5901171377dff5dc

SHA512
af59b58b2bd78115f6a17d9a7a52c3317b653cccb8d257b3b49fc570c87ab12914b0bbfb61ae7ba50f6614c10ad3f3efaf5eb69667651a0ae5c88b5ba0991106

Download Submit
memory/2124-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2124-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2124-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2124-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2452-14-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/2452-16-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/2452-17-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3556-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3556-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3556-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3556-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/3556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3556-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads