tofsee | 71865716dd93cbc09406722c37c3e9f272cc954889f669c9bf204c82a16546ca

General

Target

2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe
Size

12.3MB
MD5

15ca15cc8b0af7d03447c7a4153d60e3
SHA1

3f7dca10f1ed7f4850540e9f91a856d71786e963
SHA256

71865716dd93cbc09406722c37c3e9f272cc954889f669c9bf204c82a16546ca
SHA512

5402b882785d590d45f60bdf3ecc4d47f41a959388b73e787afec50a411f1d7d29570ef914fd24994d9ee4932e2599ec9fbf676233a42715962a2958e28c7556
SSDEEP

49152:6qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:6qtYc3

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
4104	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\soocjqyj\ImagePath = "C:\\Windows\\SysWOW64\\soocjqyj\\bkejbavr.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe

Deletes itself 1 IoCs

pid	Process
2696	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4380	bkejbavr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4380 set thread context of 2696	4380	bkejbavr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2952	sc.exe
3464	sc.exe
4852	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
772	1800	WerFault.exe	82
3076	4380	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	svchost.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	bkejbavr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 3420	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	83
PID 1800 wrote to memory of 3420	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	83
PID 1800 wrote to memory of 3420	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	83
PID 1800 wrote to memory of 2892	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	85
PID 1800 wrote to memory of 2892	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	85
PID 1800 wrote to memory of 2892	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	85
PID 1800 wrote to memory of 2952	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	87
PID 1800 wrote to memory of 2952	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	87
PID 1800 wrote to memory of 2952	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	87
PID 1800 wrote to memory of 3464	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	89
PID 1800 wrote to memory of 3464	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	89
PID 1800 wrote to memory of 3464	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	89
PID 1800 wrote to memory of 4852	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	91
PID 1800 wrote to memory of 4852	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	91
PID 1800 wrote to memory of 4852	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	91
PID 1800 wrote to memory of 4104	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	94
PID 1800 wrote to memory of 4104	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	94
PID 1800 wrote to memory of 4104	1800	2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe	94
PID 4380 wrote to memory of 2696	4380	bkejbavr.exe	100
PID 4380 wrote to memory of 2696	4380	bkejbavr.exe	100
PID 4380 wrote to memory of 2696	4380	bkejbavr.exe	100
PID 4380 wrote to memory of 2696	4380	bkejbavr.exe	100
PID 4380 wrote to memory of 2696	4380	bkejbavr.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\soocjqyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bkejbavr.exe" C:\Windows\SysWOW64\soocjqyj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create soocjqyj binPath= "C:\Windows\SysWOW64\soocjqyj\bkejbavr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description soocjqyj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start soocjqyj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4852
- 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:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1800 -s 892
  2⤵
  - Program crash
  PID:772

C:\Windows\SysWOW64\soocjqyj\bkejbavr.exe
C:\Windows\SysWOW64\soocjqyj\bkejbavr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_15ca15cc8b0af7d03447c7a4153d60e3_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 532
  2⤵
  - Program crash
  PID:3076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1800 -ip 1800
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4380 -ip 4380
1⤵
PID:1636

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\bkejbavr.exe

Filesize
14.6MB

MD5
895c9bfaa71f46aa1e112f53c70b3d06

SHA1
b8496a1223126f929ba16a573105dc1e8754b8c4

SHA256
e6a2bf1cb2b76064142c120f47349f84fbdaff5458aa596da1ca6b74cb694c80

SHA512
460b21a16e97f95973478c796390f6b3e078e891237a3ebdbc986c26ce8f5b05a9989978307a64340affd7a1f9b7b953534c564898aa69123be8a20f5e2de7e8

Download Submit
memory/1800-1-0x0000000002F70000-0x0000000003070000-memory.dmp

Filesize
1024KB

Download
memory/1800-2-0x0000000002F20000-0x0000000002F33000-memory.dmp

Filesize
76KB

Download
memory/1800-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1800-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1800-11-0x0000000002F20000-0x0000000002F33000-memory.dmp

Filesize
76KB

Download
memory/1800-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2696-8-0x00000000005D0000-0x00000000005E5000-memory.dmp

Filesize
84KB

Download
memory/2696-14-0x00000000005D0000-0x00000000005E5000-memory.dmp

Filesize
84KB

Download
memory/2696-15-0x00000000005D0000-0x00000000005E5000-memory.dmp

Filesize
84KB

Download
memory/4380-13-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads