tofsee | 6b7dac036e7c0230178bd92e96534c68b38c47ab3fbf9d7137ba1836c0941443

General

Target

2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe
Size

10.1MB
MD5

1a821c79b1db287d1949eca62a75f5f4
SHA1

d9f36db1c8661263c3c7353ab4a3827905b3febb
SHA256

6b7dac036e7c0230178bd92e96534c68b38c47ab3fbf9d7137ba1836c0941443
SHA512

ae45b3e9ee6b1731c4dd27e17781d9333fe2273b531628d4f602f39dbd14b19b99cdd53ab053da4a92f55138bb5ef89925167552ca4f1d23c2fa2884a54908bc
SSDEEP

24576:0EfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ1:Rfot

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
2280	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\mcmtmjve\ImagePath = "C:\\Windows\\SysWOW64\\mcmtmjve\\jeiaqbdb.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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe

Deletes itself 1 IoCs

pid	Process
1288	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3696	jeiaqbdb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3696 set thread context of 1288	3696	jeiaqbdb.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1432	sc.exe
2796	sc.exe
3672	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
1316	2104	WerFault.exe	82
4952	3696	WerFault.exe	96

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jeiaqbdb.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_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 2104 wrote to memory of 2012	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	86
PID 2104 wrote to memory of 2012	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	86
PID 2104 wrote to memory of 2012	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	86
PID 2104 wrote to memory of 4428	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	88
PID 2104 wrote to memory of 4428	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	88
PID 2104 wrote to memory of 4428	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	88
PID 2104 wrote to memory of 1432	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	90
PID 2104 wrote to memory of 1432	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	90
PID 2104 wrote to memory of 1432	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	90
PID 2104 wrote to memory of 2796	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	92
PID 2104 wrote to memory of 2796	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	92
PID 2104 wrote to memory of 2796	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	92
PID 2104 wrote to memory of 3672	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	94
PID 2104 wrote to memory of 3672	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	94
PID 2104 wrote to memory of 3672	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	94
PID 2104 wrote to memory of 2280	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	97
PID 2104 wrote to memory of 2280	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	97
PID 2104 wrote to memory of 2280	2104	2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe	97
PID 3696 wrote to memory of 1288	3696	jeiaqbdb.exe	102
PID 3696 wrote to memory of 1288	3696	jeiaqbdb.exe	102
PID 3696 wrote to memory of 1288	3696	jeiaqbdb.exe	102
PID 3696 wrote to memory of 1288	3696	jeiaqbdb.exe	102
PID 3696 wrote to memory of 1288	3696	jeiaqbdb.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mcmtmjve\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jeiaqbdb.exe" C:\Windows\SysWOW64\mcmtmjve\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mcmtmjve binPath= "C:\Windows\SysWOW64\mcmtmjve\jeiaqbdb.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mcmtmjve "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mcmtmjve
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3672
- 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:2280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 1028
  2⤵
  - Program crash
  PID:1316

C:\Windows\SysWOW64\mcmtmjve\jeiaqbdb.exe
C:\Windows\SysWOW64\mcmtmjve\jeiaqbdb.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_1a821c79b1db287d1949eca62a75f5f4_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3696 -s 528
  2⤵
  - Program crash
  PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2104 -ip 2104
1⤵
PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3696 -ip 3696
1⤵
PID:640

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\jeiaqbdb.exe

Filesize
14.5MB

MD5
e4024f7392686e1bf44a86902aeea5e5

SHA1
a40dde8f0cab225c453563ed23dc07b811c537e5

SHA256
0dcc18843b5168275a859f108b5e2fb91d1f13b5ae15abffa2b5c1b45fecce0a

SHA512
a016df495e7d98e9467dc90c98e9497c962bf1a9f2063b1f1b3f8274c8b00535edae4367c472e741c1f2a848f3957e11dc667cadc3fdc6c5da9509343fff1aa7

Download Submit
memory/1288-14-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/1288-17-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/1288-16-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/2104-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2104-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2104-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/2104-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2104-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3696-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3696-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3696-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3696-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads