tofsee | b57c516bc6526bc3b718001da64b5bca02fa7db74cffd8b32ebdb4acadf82938

General

Target

2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe
Size

14.1MB
MD5

5a4d47d675308426af33bf8cbd4b2e2f
SHA1

4f0bf49757f0a0d2416e03ec3fdab61c06980a17
SHA256

b57c516bc6526bc3b718001da64b5bca02fa7db74cffd8b32ebdb4acadf82938
SHA512

91d73bf1b565132e6e30055b031b11148305008aad841508381939555af399ada348e9cbc63794403d0265679cee7e4fc621e90b328a0afe5a202fe7e50bc993
SSDEEP

24576:rEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZo:4fotW

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
968	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\snhvvteg\ImagePath = "C:\\Windows\\SysWOW64\\snhvvteg\\kjxznkld.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe

Deletes itself 1 IoCs

pid	Process
4004	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5016	kjxznkld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5016 set thread context of 4004	5016	kjxznkld.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2952	sc.exe
3116	sc.exe
8	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
1620	3680	WerFault.exe	82
4820	5016	WerFault.exe	94

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	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_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
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	kjxznkld.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 3552	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	84
PID 3680 wrote to memory of 3552	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	84
PID 3680 wrote to memory of 3552	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	84
PID 3680 wrote to memory of 712	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	86
PID 3680 wrote to memory of 712	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	86
PID 3680 wrote to memory of 712	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	86
PID 3680 wrote to memory of 2952	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	88
PID 3680 wrote to memory of 2952	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	88
PID 3680 wrote to memory of 2952	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	88
PID 3680 wrote to memory of 3116	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	90
PID 3680 wrote to memory of 3116	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	90
PID 3680 wrote to memory of 3116	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	90
PID 3680 wrote to memory of 8	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	92
PID 3680 wrote to memory of 8	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	92
PID 3680 wrote to memory of 8	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	92
PID 3680 wrote to memory of 968	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	95
PID 3680 wrote to memory of 968	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	95
PID 3680 wrote to memory of 968	3680	2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe	95
PID 5016 wrote to memory of 4004	5016	kjxznkld.exe	101
PID 5016 wrote to memory of 4004	5016	kjxznkld.exe	101
PID 5016 wrote to memory of 4004	5016	kjxznkld.exe	101
PID 5016 wrote to memory of 4004	5016	kjxznkld.exe	101
PID 5016 wrote to memory of 4004	5016	kjxznkld.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\snhvvteg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\snhvvteg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create snhvvteg binPath= "C:\Windows\SysWOW64\snhvvteg\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description snhvvteg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start snhvvteg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:8
- 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:968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3680 -s 1232
  2⤵
  - Program crash
  PID:1620

C:\Windows\SysWOW64\snhvvteg\kjxznkld.exe
C:\Windows\SysWOW64\snhvvteg\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_5a4d47d675308426af33bf8cbd4b2e2f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 556
  2⤵
  - Program crash
  PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3680 -ip 3680
1⤵
PID:2184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 5016 -ip 5016
1⤵
PID:3888

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\kjxznkld.exe

Filesize
13.6MB

MD5
9446d130f48a90f99c8a65a33bcb8e22

SHA1
d71b06d08b7fca78848855d1b25c3cf21339a660

SHA256
fe39a8d5a34bbd67053d4acaa18b99d37ff8272e3d6d0d664381376e22773d8e

SHA512
db29fbfefeb52cfced8bcf0650ca7ed787e446ab60b1d3ac3db3362848d5c3a30aa23b06f6706080ceb93523dbb6a1a9662660cc6bfbe556c44d78e762d93fe1

Download Submit
memory/3680-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3680-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3680-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3680-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3680-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3680-1-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/4004-17-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/4004-16-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/4004-14-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/5016-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5016-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5016-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5016-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads