tofsee | c327b4ad3c94238bed34499f211255b097a59d5cc7ac6f80f434144ca2e16898

General

Target

2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe
Size

11.7MB
MD5

1129ae360d97b0e86ae5d7e2b0127e01
SHA1

a1e0c7c02e015f03d998707adecefccf48e9268c
SHA256

c327b4ad3c94238bed34499f211255b097a59d5cc7ac6f80f434144ca2e16898
SHA512

035cc69448fda1a436c8f1591610f2e596a67411a6f88897df585d037d57590a18e9f8f0146b15c182d1a24bace2692fa19ca4d3a7708c57dbcda2489117d253
SSDEEP

6144:wLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQQ:lTYe+D2jFu+iZoUFhAz

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
2484	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\wvfgjvnn\ImagePath = "C:\\Windows\\SysWOW64\\wvfgjvnn\\qsntmzj.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	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe

Deletes itself 1 IoCs

pid	Process
1748	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4792	qsntmzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4792 set thread context of 1748	4792	qsntmzj.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
440	sc.exe
2708	sc.exe
2700	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1852	4408	WerFault.exe	82
2568	4792	WerFault.exe	93

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	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.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
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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qsntmzj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 1340	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	83
PID 4408 wrote to memory of 1340	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	83
PID 4408 wrote to memory of 1340	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	83
PID 4408 wrote to memory of 4256	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	85
PID 4408 wrote to memory of 4256	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	85
PID 4408 wrote to memory of 4256	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	85
PID 4408 wrote to memory of 2700	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	87
PID 4408 wrote to memory of 2700	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	87
PID 4408 wrote to memory of 2700	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	87
PID 4408 wrote to memory of 440	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	89
PID 4408 wrote to memory of 440	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	89
PID 4408 wrote to memory of 440	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	89
PID 4408 wrote to memory of 2708	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	91
PID 4408 wrote to memory of 2708	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	91
PID 4408 wrote to memory of 2708	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	91
PID 4408 wrote to memory of 2484	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	94
PID 4408 wrote to memory of 2484	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	94
PID 4408 wrote to memory of 2484	4408	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	94
PID 4792 wrote to memory of 1748	4792	qsntmzj.exe	100
PID 4792 wrote to memory of 1748	4792	qsntmzj.exe	100
PID 4792 wrote to memory of 1748	4792	qsntmzj.exe	100
PID 4792 wrote to memory of 1748	4792	qsntmzj.exe	100
PID 4792 wrote to memory of 1748	4792	qsntmzj.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wvfgjvnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qsntmzj.exe" C:\Windows\SysWOW64\wvfgjvnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wvfgjvnn binPath= "C:\Windows\SysWOW64\wvfgjvnn\qsntmzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wvfgjvnn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wvfgjvnn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- 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:2484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4408 -s 680
  2⤵
  - Program crash
  PID:1852

C:\Windows\SysWOW64\wvfgjvnn\qsntmzj.exe
C:\Windows\SysWOW64\wvfgjvnn\qsntmzj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 512
  2⤵
  - Program crash
  PID:2568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4408 -ip 4408
1⤵
PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4792 -ip 4792
1⤵
PID:1868

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\qsntmzj.exe

Filesize
14.5MB

MD5
f4526ff943543f92c07c80455096a7cf

SHA1
918a74c394b69310c9d06b2a51bb99e4d3b063fb

SHA256
83cb0f7dd78f3b37c548aff7b4e803eca0c5a40a80fd105357eb2b240ef931af

SHA512
4ecf48244494462fedb2253ba26daea78119da5aad844d6a3dd4ccb12c368be14d713441e157c72106d4e922149f99d2be45bcb4dde3971724ed8dd8e5776995

Download Submit
memory/1748-11-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/1748-19-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/1748-18-0x0000000000B20000-0x0000000000B35000-memory.dmp

Filesize
84KB

Download
memory/4408-14-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4408-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4408-1-0x0000000000860000-0x0000000000960000-memory.dmp

Filesize
1024KB

Download
memory/4408-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4408-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4408-2-0x00000000006A0000-0x00000000006B3000-memory.dmp

Filesize
76KB

Download
memory/4792-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4792-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4792-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4792-17-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads