tofsee | c622452a6ef4332517517de6d958dc47b9f9a6fe902cac7ab04482ab94f00a18

General

Target

2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe
Size

12.5MB
MD5

cdf6691f9acb932affd7efbe0f87c67b
SHA1

6eef017fc547bf10e160edb2c353c8c38f7cb2f6
SHA256

c622452a6ef4332517517de6d958dc47b9f9a6fe902cac7ab04482ab94f00a18
SHA512

b94d846d568150a5b00156710ef62f3c7d05e31572114f89cb2d28dbd2337d6e37e1a556f778122d82e279b67c6c2738d9245d095af813147da30de3bb2690f5
SSDEEP

393216:RXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
1208	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\fmsnwjqa\ImagePath = "C:\\Windows\\SysWOW64\\fmsnwjqa\\ylxunafp.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	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe

Deletes itself 1 IoCs

pid	Process
1760	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2848	ylxunafp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2848 set thread context of 1760	2848	ylxunafp.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
1600	sc.exe
3844	sc.exe
3604	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

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ylxunafp.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	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3772 wrote to memory of 1468	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	82
PID 3772 wrote to memory of 1468	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	82
PID 3772 wrote to memory of 1468	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	82
PID 3772 wrote to memory of 3684	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	84
PID 3772 wrote to memory of 3684	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	84
PID 3772 wrote to memory of 3684	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	84
PID 3772 wrote to memory of 1600	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	86
PID 3772 wrote to memory of 1600	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	86
PID 3772 wrote to memory of 1600	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	86
PID 3772 wrote to memory of 3844	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	88
PID 3772 wrote to memory of 3844	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	88
PID 3772 wrote to memory of 3844	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	88
PID 3772 wrote to memory of 3604	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	90
PID 3772 wrote to memory of 3604	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	90
PID 3772 wrote to memory of 3604	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	90
PID 3772 wrote to memory of 1208	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	93
PID 3772 wrote to memory of 1208	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	93
PID 3772 wrote to memory of 1208	3772	2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe	93
PID 2848 wrote to memory of 1760	2848	ylxunafp.exe	95
PID 2848 wrote to memory of 1760	2848	ylxunafp.exe	95
PID 2848 wrote to memory of 1760	2848	ylxunafp.exe	95
PID 2848 wrote to memory of 1760	2848	ylxunafp.exe	95
PID 2848 wrote to memory of 1760	2848	ylxunafp.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fmsnwjqa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ylxunafp.exe" C:\Windows\SysWOW64\fmsnwjqa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fmsnwjqa binPath= "C:\Windows\SysWOW64\fmsnwjqa\ylxunafp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fmsnwjqa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fmsnwjqa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3604
- 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:1208

C:\Windows\SysWOW64\fmsnwjqa\ylxunafp.exe
C:\Windows\SysWOW64\fmsnwjqa\ylxunafp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cdf6691f9acb932affd7efbe0f87c67b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1760

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\ylxunafp.exe

Filesize
12.8MB

MD5
e29732a988ae4364c94cc08f4a2066d4

SHA1
aaeb96054f37064983f4500e89605405a8eaa03e

SHA256
750a3e45eb2ba3c5158e7b1020c057d41ba34dc0464cd919ef6ebc0ff235a900

SHA512
8d4d4eb129732752128a40a1347b709dad752388733d44aa32eecfb8bcd75e025184bac829204a50f5790b17b11d0993efc264843351d0f22f9259a6905a5b45

Download Submit
memory/1760-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/1760-22-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/1760-21-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/1760-18-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/2848-20-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2848-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2848-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2848-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3772-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/3772-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3772-11-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download
memory/3772-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3772-2-0x0000000000890000-0x00000000008A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads