tofsee | ab7df9602cb6368e75710ec61a31f508242f8d33cb107ce293fe807434d942b7

General

Target

2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe
Size

12.4MB
MD5

30a7d8bf5a7eb75f9e72c522ae0b0efd
SHA1

54201ea3b968280c003d8b43136bcd274ce050cb
SHA256

ab7df9602cb6368e75710ec61a31f508242f8d33cb107ce293fe807434d942b7
SHA512

693bae076588d7e8d8c44be14452e72238216b1446f1f1a795af36ec34ca56d273a745673c74437f7b929c65ac24d7776c32bbee31aeaa292aa76f8910322ce9
SSDEEP

49152:oqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:oqtYc3

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
320	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\bdlcptxx\ImagePath = "C:\\Windows\\SysWOW64\\bdlcptxx\\frqepzhb.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe

Deletes itself 1 IoCs

pid	Process
2132	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1836	frqepzhb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1836 set thread context of 2132	1836	frqepzhb.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4820	sc.exe
1392	sc.exe
2640	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1176	1836	WerFault.exe	92
4032	4400	WerFault.exe	81

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	frqepzhb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 2864	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	82
PID 4400 wrote to memory of 2864	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	82
PID 4400 wrote to memory of 2864	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	82
PID 4400 wrote to memory of 2596	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	84
PID 4400 wrote to memory of 2596	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	84
PID 4400 wrote to memory of 2596	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	84
PID 4400 wrote to memory of 4820	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	86
PID 4400 wrote to memory of 4820	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	86
PID 4400 wrote to memory of 4820	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	86
PID 4400 wrote to memory of 1392	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	88
PID 4400 wrote to memory of 1392	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	88
PID 4400 wrote to memory of 1392	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	88
PID 4400 wrote to memory of 2640	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	90
PID 4400 wrote to memory of 2640	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	90
PID 4400 wrote to memory of 2640	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	90
PID 1836 wrote to memory of 2132	1836	frqepzhb.exe	93
PID 1836 wrote to memory of 2132	1836	frqepzhb.exe	93
PID 1836 wrote to memory of 2132	1836	frqepzhb.exe	93
PID 1836 wrote to memory of 2132	1836	frqepzhb.exe	93
PID 1836 wrote to memory of 2132	1836	frqepzhb.exe	93
PID 4400 wrote to memory of 320	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	96
PID 4400 wrote to memory of 320	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	96
PID 4400 wrote to memory of 320	4400	2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe	96

C:\Users\Admin\AppData\Local\Temp\2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bdlcptxx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\frqepzhb.exe" C:\Windows\SysWOW64\bdlcptxx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bdlcptxx binPath= "C:\Windows\SysWOW64\bdlcptxx\frqepzhb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bdlcptxx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bdlcptxx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2640
- 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:320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4400 -s 892
  2⤵
  - Program crash
  PID:4032

C:\Windows\SysWOW64\bdlcptxx\frqepzhb.exe
C:\Windows\SysWOW64\bdlcptxx\frqepzhb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_30a7d8bf5a7eb75f9e72c522ae0b0efd_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1836 -s 512
  2⤵
  - Program crash
  PID:1176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1836 -ip 1836
1⤵
PID:3460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4400 -ip 4400
1⤵
PID:2956

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\frqepzhb.exe

Filesize
13.2MB

MD5
ccfdd3b3bd716781c58f384e57832015

SHA1
16cbe22c63946bab54a091bbc868f5a1029bf817

SHA256
587d46422210f07b6fa947c32729635b21defda03a4030132ca3a4ac6b6bdd80

SHA512
51ce7ef3d59287d5aa22c98c56e96018d19308cdb12d4be05d1602cd7dabbb17269c9579dbad6907436dc8a5312f92f753f7463890a005dbdc0a2c48dca0e177

Download Submit
memory/1836-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2132-8-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/2132-14-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/2132-15-0x0000000000E30000-0x0000000000E45000-memory.dmp

Filesize
84KB

Download
memory/4400-1-0x0000000002F50000-0x0000000003050000-memory.dmp

Filesize
1024KB

Download
memory/4400-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4400-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4400-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4400-12-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4400-11-0x0000000000400000-0x0000000002DC3000-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