tofsee | f9fcec7285c18f2bf701fc31f799ea3a28bbb84a51290d03ec010dc3559f2f10

General

Target

2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe
Size

11.0MB
MD5

0d5531100e7d9824de6e5aecffbe9341
SHA1

5ced127d1e9ae254d058712c395cf8bda7f27ab7
SHA256

f9fcec7285c18f2bf701fc31f799ea3a28bbb84a51290d03ec010dc3559f2f10
SHA512

f0cb42ec59009bba4ef7801b46609ed4d5e6772fe99823f4046f9a52bd27eaeb22f0866d4538ef4f7be755e8b54862c6f3e2702d21c1186dbb2af3a1a7a35b32
SSDEEP

6144:WLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQF:HTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2604	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\ffpmobgx\ImagePath = "C:\\Windows\\SysWOW64\\ffpmobgx\\bdyexku.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe

Deletes itself 1 IoCs

pid	Process
2336	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3020	bdyexku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3020 set thread context of 2336	3020	bdyexku.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
5088	sc.exe
376	sc.exe
1412	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3016	728	WerFault.exe	81
3832	3020	WerFault.exe	92

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdyexku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.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	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 728 wrote to memory of 1476	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	82
PID 728 wrote to memory of 1476	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	82
PID 728 wrote to memory of 1476	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	82
PID 728 wrote to memory of 1932	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	84
PID 728 wrote to memory of 1932	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	84
PID 728 wrote to memory of 1932	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	84
PID 728 wrote to memory of 5088	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	86
PID 728 wrote to memory of 5088	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	86
PID 728 wrote to memory of 5088	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	86
PID 728 wrote to memory of 376	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	88
PID 728 wrote to memory of 376	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	88
PID 728 wrote to memory of 376	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	88
PID 728 wrote to memory of 1412	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	90
PID 728 wrote to memory of 1412	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	90
PID 728 wrote to memory of 1412	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	90
PID 728 wrote to memory of 2604	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	93
PID 728 wrote to memory of 2604	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	93
PID 728 wrote to memory of 2604	728	2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe	93
PID 3020 wrote to memory of 2336	3020	bdyexku.exe	98
PID 3020 wrote to memory of 2336	3020	bdyexku.exe	98
PID 3020 wrote to memory of 2336	3020	bdyexku.exe	98
PID 3020 wrote to memory of 2336	3020	bdyexku.exe	98
PID 3020 wrote to memory of 2336	3020	bdyexku.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ffpmobgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bdyexku.exe" C:\Windows\SysWOW64\ffpmobgx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ffpmobgx binPath= "C:\Windows\SysWOW64\ffpmobgx\bdyexku.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ffpmobgx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ffpmobgx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1412
- 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:2604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 728 -s 1328
  2⤵
  - Program crash
  PID:3016

C:\Windows\SysWOW64\ffpmobgx\bdyexku.exe
C:\Windows\SysWOW64\ffpmobgx\bdyexku.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_0d5531100e7d9824de6e5aecffbe9341_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 560
  2⤵
  - Program crash
  PID:3832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 728 -ip 728
1⤵
PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3020 -ip 3020
1⤵
PID:2752

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\bdyexku.exe

Filesize
10.5MB

MD5
301518b14f0aa7e0fe9228b8ec413eef

SHA1
df24b826d0e8a16b5a36bc13345b40ea4149c462

SHA256
f385fe56b01d90f069ed75b44071590ed74425b6a108db1b3bc15aabaa6288d3

SHA512
81f68443d522c5738bfa4f05e61cddac3ca4b339251c66371e431722f4fedf7bdfb498f6bc3d094048fd1571ad938afcf72364c5f0901278d60a9b785f0360cc

Download Submit
memory/728-13-0x0000000000800000-0x0000000000813000-memory.dmp

Filesize
76KB

Download
memory/728-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/728-1-0x0000000000890000-0x0000000000990000-memory.dmp

Filesize
1024KB

Download
memory/728-12-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/728-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/728-2-0x0000000000800000-0x0000000000813000-memory.dmp

Filesize
76KB

Download
memory/2336-10-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2336-17-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/2336-18-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/3020-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3020-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3020-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads