tofsee | d66356826e5ba8aab27a1ea1adf0178f9074a07d5f2f7c7d8092b870b108842a

General

Target

2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe
Size

12.4MB
MD5

cead6c18b15da4302277a2814979c996
SHA1

92d47bde1fa1074b3a2791ee3a20bb07decbe1b0
SHA256

d66356826e5ba8aab27a1ea1adf0178f9074a07d5f2f7c7d8092b870b108842a
SHA512

321641a60f333e7943948917bfc87cfa1e0dea53b422f0cfcbd3121ac8a7e4ee72ab83f3dbbd85726e6e9b5aef3258ba67f692a44c3758081b830c8dae828f3a
SSDEEP

393216:LXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
1712	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\suqlrwvk\ImagePath = "C:\\Windows\\SysWOW64\\suqlrwvk\\wjvslydn.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	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe

Deletes itself 1 IoCs

pid	Process
4540	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	wjvslydn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 4540	2496	wjvslydn.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1956	sc.exe
3016	sc.exe
800	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	wjvslydn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-18_cead6c18b15da4302277a2814979c996_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	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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 4484	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	83
PID 4480 wrote to memory of 4484	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	83
PID 4480 wrote to memory of 4484	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	83
PID 4480 wrote to memory of 4016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	85
PID 4480 wrote to memory of 4016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	85
PID 4480 wrote to memory of 4016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	85
PID 4480 wrote to memory of 1956	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	87
PID 4480 wrote to memory of 1956	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	87
PID 4480 wrote to memory of 1956	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	87
PID 4480 wrote to memory of 3016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	89
PID 4480 wrote to memory of 3016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	89
PID 4480 wrote to memory of 3016	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	89
PID 4480 wrote to memory of 800	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	92
PID 4480 wrote to memory of 800	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	92
PID 4480 wrote to memory of 800	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	92
PID 4480 wrote to memory of 1712	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	95
PID 4480 wrote to memory of 1712	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	95
PID 4480 wrote to memory of 1712	4480	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	95
PID 2496 wrote to memory of 4540	2496	wjvslydn.exe	97
PID 2496 wrote to memory of 4540	2496	wjvslydn.exe	97
PID 2496 wrote to memory of 4540	2496	wjvslydn.exe	97
PID 2496 wrote to memory of 4540	2496	wjvslydn.exe	97
PID 2496 wrote to memory of 4540	2496	wjvslydn.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\suqlrwvk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjvslydn.exe" C:\Windows\SysWOW64\suqlrwvk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create suqlrwvk binPath= "C:\Windows\SysWOW64\suqlrwvk\wjvslydn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description suqlrwvk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start suqlrwvk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:800
- 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:1712

C:\Windows\SysWOW64\suqlrwvk\wjvslydn.exe
C:\Windows\SysWOW64\suqlrwvk\wjvslydn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4540

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\wjvslydn.exe

Filesize
13.5MB

MD5
cf00946f2ff05dcd2bc52a8c5cb7d41e

SHA1
876709c0e0806196f64933950feec26c9c29d4ce

SHA256
01c0bfff049a1dcd9669b2169564c1b78afd1cc157da0a2d379074b3784d3a75

SHA512
802da1e5938517363d2a68178d46042cd8cb8feea7900066d811d177e08d14fbf142b28babcb3a13e1ae859c1803d3902c384ccb35d5c486b3bee63cd0fed130

Download Submit
memory/2496-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2496-19-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2496-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2496-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4480-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4480-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4480-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4480-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download
memory/4480-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4480-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/4540-17-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/4540-18-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/4540-14-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/4540-20-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download
memory/4540-21-0x0000000000160000-0x0000000000175000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads