tofsee | 94d2886b9a43d885420c56ed2fbb1cfab5bcba56a586147e3c85105fe9811ed6

General

Target

2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe
Size

10.3MB
MD5

5bc75a30d7408b73c62555e1e6bad49c
SHA1

f9c5e43e43b879c87554a8a75a37c12e3b0b0d06
SHA256

94d2886b9a43d885420c56ed2fbb1cfab5bcba56a586147e3c85105fe9811ed6
SHA512

8cb2983b82d6246126da4782e6a2990598fc898eb4560280c1fe6b0399f2421d9e313816f77bd48ecd2f5b3eb8bb393ed2e7660185a5502181ee99ae14d71e74
SSDEEP

24576:UEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZg:xfotq

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
2980	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\idfoyrhw\ImagePath = "C:\\Windows\\SysWOW64\\idfoyrhw\\fesuifgy.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe

Deletes itself 1 IoCs

pid	Process
756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4660	fesuifgy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4660 set thread context of 756	4660	fesuifgy.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
2136	sc.exe
2748	sc.exe
1048	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
2912	2884	WerFault.exe	82
4640	4660	WerFault.exe	99

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	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	sc.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	fesuifgy.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 3932	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	83
PID 2884 wrote to memory of 3932	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	83
PID 2884 wrote to memory of 3932	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	83
PID 2884 wrote to memory of 3040	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	87
PID 2884 wrote to memory of 3040	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	87
PID 2884 wrote to memory of 3040	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	87
PID 2884 wrote to memory of 2136	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	89
PID 2884 wrote to memory of 2136	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	89
PID 2884 wrote to memory of 2136	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	89
PID 2884 wrote to memory of 2748	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	95
PID 2884 wrote to memory of 2748	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	95
PID 2884 wrote to memory of 2748	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	95
PID 2884 wrote to memory of 1048	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	97
PID 2884 wrote to memory of 1048	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	97
PID 2884 wrote to memory of 1048	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	97
PID 2884 wrote to memory of 2980	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	100
PID 2884 wrote to memory of 2980	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	100
PID 2884 wrote to memory of 2980	2884	2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe	100
PID 4660 wrote to memory of 756	4660	fesuifgy.exe	108
PID 4660 wrote to memory of 756	4660	fesuifgy.exe	108
PID 4660 wrote to memory of 756	4660	fesuifgy.exe	108
PID 4660 wrote to memory of 756	4660	fesuifgy.exe	108
PID 4660 wrote to memory of 756	4660	fesuifgy.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\idfoyrhw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fesuifgy.exe" C:\Windows\SysWOW64\idfoyrhw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create idfoyrhw binPath= "C:\Windows\SysWOW64\idfoyrhw\fesuifgy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description idfoyrhw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start idfoyrhw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1048
- 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:2980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 1044
  2⤵
  - Program crash
  PID:2912

C:\Windows\SysWOW64\idfoyrhw\fesuifgy.exe
C:\Windows\SysWOW64\idfoyrhw\fesuifgy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_5bc75a30d7408b73c62555e1e6bad49c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4660 -s 512
  2⤵
  - Program crash
  PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2884 -ip 2884
1⤵
PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4660 -ip 4660
1⤵
PID:940

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\fesuifgy.exe

Filesize
12.0MB

MD5
597213a233ba1f103cba7afe8a9ee954

SHA1
aa2badaef6ad4908017e7b9b3fc5fd6546686276

SHA256
42e366216794d9dca4bc36db97439b10c8062b1142d943e87c78a946e2220074

SHA512
8b0d964efb4f73db66a1907c32f8ff370e1789c0c9a905fdcd9b46cbf87082fb9aae77d7b0fb62a7420636eedc6e05511c1619cc8915a02a1ce25ec7f88b7e02

Download Submit
memory/756-14-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/756-16-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/756-17-0x00000000008C0000-0x00000000008D5000-memory.dmp

Filesize
84KB

Download
memory/2884-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2884-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2884-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2884-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2884-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2884-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download
memory/4660-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4660-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4660-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4660-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads