tofsee | ab80628a0f62ca7df440960826b9e66e8fd42a9f57032e2d2affdfd2ed3f976f

General

Target

2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe
Size

10.1MB
MD5

3037c559046509f4e18417b99bc13d18
SHA1

544c3ee6ba22bbfccc5e9d0b1c7d0823b2b86822
SHA256

ab80628a0f62ca7df440960826b9e66e8fd42a9f57032e2d2affdfd2ed3f976f
SHA512

b63f01894a1299760eb86c09e6e86ebfc82c422387c43e1e7f5d9bc817381d06a4edabb774acb2ed5e27f3d9aba4dd51076837e13608cf58422911419ca7c146
SSDEEP

24576:OEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZH:nfot

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
2804	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\uueustws\ImagePath = "C:\\Windows\\SysWOW64\\uueustws\\zmyvobgq.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe

Deletes itself 1 IoCs

pid	Process
2508	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2088	zmyvobgq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2088 set thread context of 2508	2088	zmyvobgq.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
2116	sc.exe
1044	sc.exe
812	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
2304	1840	WerFault.exe	82
4524	2088	WerFault.exe	96

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.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	zmyvobgq.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 3696	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	86
PID 1840 wrote to memory of 3696	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	86
PID 1840 wrote to memory of 3696	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	86
PID 1840 wrote to memory of 3388	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	88
PID 1840 wrote to memory of 3388	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	88
PID 1840 wrote to memory of 3388	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	88
PID 1840 wrote to memory of 2116	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	90
PID 1840 wrote to memory of 2116	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	90
PID 1840 wrote to memory of 2116	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	90
PID 1840 wrote to memory of 1044	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	92
PID 1840 wrote to memory of 1044	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	92
PID 1840 wrote to memory of 1044	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	92
PID 1840 wrote to memory of 812	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	94
PID 1840 wrote to memory of 812	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	94
PID 1840 wrote to memory of 812	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	94
PID 1840 wrote to memory of 2804	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	99
PID 1840 wrote to memory of 2804	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	99
PID 1840 wrote to memory of 2804	1840	2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe	99
PID 2088 wrote to memory of 2508	2088	zmyvobgq.exe	108
PID 2088 wrote to memory of 2508	2088	zmyvobgq.exe	108
PID 2088 wrote to memory of 2508	2088	zmyvobgq.exe	108
PID 2088 wrote to memory of 2508	2088	zmyvobgq.exe	108
PID 2088 wrote to memory of 2508	2088	zmyvobgq.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uueustws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\uueustws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uueustws binPath= "C:\Windows\SysWOW64\uueustws\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uueustws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uueustws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:812
- 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:2804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 784
  2⤵
  - Program crash
  PID:2304

C:\Windows\SysWOW64\uueustws\zmyvobgq.exe
C:\Windows\SysWOW64\uueustws\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_3037c559046509f4e18417b99bc13d18_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2088 -s 508
  2⤵
  - Program crash
  PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1840 -ip 1840
1⤵
PID:428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2088 -ip 2088
1⤵
PID:4516

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\zmyvobgq.exe

Filesize
12.5MB

MD5
dea67264187c1a679eb831674d714afe

SHA1
35cbd0f661aaa6944ae73f14ff602a3c602a0e39

SHA256
f947e1cfd6131e80f76a7ecced85b28c1cb0e99c026528d415a9afb3b9879311

SHA512
2224e12ed324968eddbc77425aa2c5cbc4c00c314046e4c00161a17e5d7591dfa91d8a1f201c238ff2d3db1488760c8ed5f4f18665047f822a706bd1344d9e74

Download Submit
memory/1840-8-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/1840-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-1-0x0000000000450000-0x0000000000550000-memory.dmp

Filesize
1024KB

Download
memory/1840-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1840-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1840-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/2088-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2088-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2088-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2088-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2508-14-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/2508-16-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/2508-17-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads