tofsee | 12b1109b821b9695c766fa4413d64c46b537917dee1f1afb2a75ab6846b642c4

General

Target

2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe
Size

11.8MB
MD5

877c136c5b3187fdb39b619b352113bb
SHA1

8f012b1a114be7b9642a3c1d79b6149eeaf63c46
SHA256

12b1109b821b9695c766fa4413d64c46b537917dee1f1afb2a75ab6846b642c4
SHA512

6b54e2fafb13f43836b6e911eefceab89836ed939443bb3af3cf505d14212e91c83b871aee0ce00941e28f189dbff46abf832b1a84558e043e16a5f547805aee
SSDEEP

49152:JqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:JqtYc3

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
2868	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\uovaszmq\ImagePath = "C:\\Windows\\SysWOW64\\uovaszmq\\gsrfqaic.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe

Deletes itself 1 IoCs

pid	Process
3300	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2448	gsrfqaic.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2448 set thread context of 3300	2448	gsrfqaic.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1952	sc.exe
5000	sc.exe
3588	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
2140	2448	WerFault.exe	96
2108	2252	WerFault.exe	82

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	gsrfqaic.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	2025-01-31_877c136c5b3187fdb39b619b352113bb_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	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 2252 wrote to memory of 2000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 2252 wrote to memory of 2000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 2252 wrote to memory of 2000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	86
PID 2252 wrote to memory of 264	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 2252 wrote to memory of 264	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 2252 wrote to memory of 264	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	88
PID 2252 wrote to memory of 5000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 2252 wrote to memory of 5000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 2252 wrote to memory of 5000	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	90
PID 2252 wrote to memory of 3588	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 2252 wrote to memory of 3588	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 2252 wrote to memory of 3588	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	92
PID 2252 wrote to memory of 1952	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	94
PID 2252 wrote to memory of 1952	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	94
PID 2252 wrote to memory of 1952	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	94
PID 2448 wrote to memory of 3300	2448	gsrfqaic.exe	97
PID 2448 wrote to memory of 3300	2448	gsrfqaic.exe	97
PID 2448 wrote to memory of 3300	2448	gsrfqaic.exe	97
PID 2448 wrote to memory of 3300	2448	gsrfqaic.exe	97
PID 2448 wrote to memory of 3300	2448	gsrfqaic.exe	97
PID 2252 wrote to memory of 2868	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	100
PID 2252 wrote to memory of 2868	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	100
PID 2252 wrote to memory of 2868	2252	2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uovaszmq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gsrfqaic.exe" C:\Windows\SysWOW64\uovaszmq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uovaszmq binPath= "C:\Windows\SysWOW64\uovaszmq\gsrfqaic.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uovaszmq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uovaszmq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1952
- 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:2868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 1216
  2⤵
  - Program crash
  PID:2108

C:\Windows\SysWOW64\uovaszmq\gsrfqaic.exe
C:\Windows\SysWOW64\uovaszmq\gsrfqaic.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_877c136c5b3187fdb39b619b352113bb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 512
  2⤵
  - Program crash
  PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2448 -ip 2448
1⤵
PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2252 -ip 2252
1⤵
PID:4700

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\gsrfqaic.exe

Filesize
13.6MB

MD5
c9ab205f764eca54b9cd7f5761b83f86

SHA1
b40f35a0c11aecc16101019317244e1a7406252c

SHA256
5cfff0a437eb5388261e0bec138a2167187998f412e288ed62f9782ce4ae9256

SHA512
715f264b3fc34bb78da7481b1a2fd0165fc95264e6477024dee056e6806460517698d14b48659ab8383a66009683a7d6f42fb6b6a09e547d52b2aefde44e05d9

Download Submit
memory/2252-1-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2252-2-0x0000000003200000-0x0000000003213000-memory.dmp

Filesize
76KB

Download
memory/2252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-12-0x0000000003200000-0x0000000003213000-memory.dmp

Filesize
76KB

Download
memory/2252-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2448-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3300-8-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3300-14-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3300-15-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads