tofsee | ac41ea8c3aae68538ecc8288ca53b92b4044328fed0dae0034a5b0204dc003b9

General

Target

2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe
Size

10.1MB
MD5

23554a2f22469025da86734caf4c8d02
SHA1

6cd1a8d6e596578b8f00de2e0f025812831f72ae
SHA256

ac41ea8c3aae68538ecc8288ca53b92b4044328fed0dae0034a5b0204dc003b9
SHA512

1d05be4d0dbd19f6965e3fed6d681f94e99ca44e06eff0745c1842e6e0e0af5afaaa7aa553c5233808ac31cf59cb4f1fa349797e22f6032c6f465653fe802170
SSDEEP

6144:ZLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQI:6TYe+D2jFu+iZoUFhAz

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
3908	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\vvaugycr\ImagePath = "C:\\Windows\\SysWOW64\\vvaugycr\\oqjubjxn.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe

Deletes itself 1 IoCs

pid	Process
1252	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2020	oqjubjxn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2020 set thread context of 1252	2020	oqjubjxn.exe	96

Launches sc.exe 3 IoCs

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

pid	Process
4880	sc.exe
3424	sc.exe
3144	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
3264	392	WerFault.exe	81
2296	2020	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	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	oqjubjxn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 3356	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	82
PID 392 wrote to memory of 3356	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	82
PID 392 wrote to memory of 3356	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	82
PID 392 wrote to memory of 432	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	84
PID 392 wrote to memory of 432	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	84
PID 392 wrote to memory of 432	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	84
PID 392 wrote to memory of 4880	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	86
PID 392 wrote to memory of 4880	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	86
PID 392 wrote to memory of 4880	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	86
PID 392 wrote to memory of 3424	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	88
PID 392 wrote to memory of 3424	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	88
PID 392 wrote to memory of 3424	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	88
PID 392 wrote to memory of 3144	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	90
PID 392 wrote to memory of 3144	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	90
PID 392 wrote to memory of 3144	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	90
PID 392 wrote to memory of 3908	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	93
PID 392 wrote to memory of 3908	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	93
PID 392 wrote to memory of 3908	392	2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe	93
PID 2020 wrote to memory of 1252	2020	oqjubjxn.exe	96
PID 2020 wrote to memory of 1252	2020	oqjubjxn.exe	96
PID 2020 wrote to memory of 1252	2020	oqjubjxn.exe	96
PID 2020 wrote to memory of 1252	2020	oqjubjxn.exe	96
PID 2020 wrote to memory of 1252	2020	oqjubjxn.exe	96

C:\Users\Admin\AppData\Local\Temp\2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vvaugycr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oqjubjxn.exe" C:\Windows\SysWOW64\vvaugycr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vvaugycr binPath= "C:\Windows\SysWOW64\vvaugycr\oqjubjxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vvaugycr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vvaugycr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3144
- 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:3908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 776
  2⤵
  - Program crash
  PID:3264

C:\Windows\SysWOW64\vvaugycr\oqjubjxn.exe
C:\Windows\SysWOW64\vvaugycr\oqjubjxn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_23554a2f22469025da86734caf4c8d02_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2020 -s 528
  2⤵
  - Program crash
  PID:2296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 392 -ip 392
1⤵
PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2020 -ip 2020
1⤵
PID:1996

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\oqjubjxn.exe

Filesize
11.7MB

MD5
1129ae360d97b0e86ae5d7e2b0127e01

SHA1
a1e0c7c02e015f03d998707adecefccf48e9268c

SHA256
c327b4ad3c94238bed34499f211255b097a59d5cc7ac6f80f434144ca2e16898

SHA512
035cc69448fda1a436c8f1591610f2e596a67411a6f88897df585d037d57590a18e9f8f0146b15c182d1a24bace2692fa19ca4d3a7708c57dbcda2489117d253

Download Submit
memory/392-2-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-1-0x00000000007B0000-0x00000000008B0000-memory.dmp

Filesize
1024KB

Download
memory/392-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/392-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-16-0x00000000005E0000-0x00000000005F3000-memory.dmp

Filesize
76KB

Download
memory/1252-19-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1252-21-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1252-11-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1252-20-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1252-14-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/2020-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2020-18-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2020-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2020-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads