tofsee | 5880ebc26222ca34e47612c63eb9cc398de042e2243527216bf009a7c3c75596

General

Target

2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe
Size

14.4MB
MD5

2de255e3938415c2a4fba9560c69b8db
SHA1

e68dc1902ee4b39fe1edf2deeb7fc93d33f80887
SHA256

5880ebc26222ca34e47612c63eb9cc398de042e2243527216bf009a7c3c75596
SHA512

e578495daba40a41652ed8b6df44830a2d8c62d431879ecf3d12a1504f9448a14fa5a236e3c2a75bab748564a9c3421479ac63c3c8683f1889977cfab2bd02be
SSDEEP

3072:5LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:8OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2620	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\iksumkdd\ImagePath = "C:\\Windows\\SysWOW64\\iksumkdd\\vvwhcdbj.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe

Deletes itself 1 IoCs

pid	Process
976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1880	vvwhcdbj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1880 set thread context of 976	1880	vvwhcdbj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1180	sc.exe
2932	sc.exe
4524	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
452	4032	WerFault.exe	82
2592	1880	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	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	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.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	vvwhcdbj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 3704	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	86
PID 4032 wrote to memory of 3704	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	86
PID 4032 wrote to memory of 3704	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	86
PID 4032 wrote to memory of 3020	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	88
PID 4032 wrote to memory of 3020	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	88
PID 4032 wrote to memory of 3020	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	88
PID 4032 wrote to memory of 1180	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	90
PID 4032 wrote to memory of 1180	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	90
PID 4032 wrote to memory of 1180	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	90
PID 4032 wrote to memory of 2932	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	92
PID 4032 wrote to memory of 2932	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	92
PID 4032 wrote to memory of 2932	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	92
PID 4032 wrote to memory of 4524	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	94
PID 4032 wrote to memory of 4524	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	94
PID 4032 wrote to memory of 4524	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	94
PID 4032 wrote to memory of 2620	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	97
PID 4032 wrote to memory of 2620	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	97
PID 4032 wrote to memory of 2620	4032	2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe	97
PID 1880 wrote to memory of 976	1880	vvwhcdbj.exe	102
PID 1880 wrote to memory of 976	1880	vvwhcdbj.exe	102
PID 1880 wrote to memory of 976	1880	vvwhcdbj.exe	102
PID 1880 wrote to memory of 976	1880	vvwhcdbj.exe	102
PID 1880 wrote to memory of 976	1880	vvwhcdbj.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iksumkdd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vvwhcdbj.exe" C:\Windows\SysWOW64\iksumkdd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iksumkdd binPath= "C:\Windows\SysWOW64\iksumkdd\vvwhcdbj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iksumkdd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iksumkdd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4524
- 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:2620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 1344
  2⤵
  - Program crash
  PID:452

C:\Windows\SysWOW64\iksumkdd\vvwhcdbj.exe
C:\Windows\SysWOW64\iksumkdd\vvwhcdbj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_2de255e3938415c2a4fba9560c69b8db_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1880 -s 512
  2⤵
  - Program crash
  PID:2592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4032 -ip 4032
1⤵
PID:1280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1880 -ip 1880
1⤵
PID:4448

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

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Downloads

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

Filesize
10.7MB

MD5
3b1c42b9fc861bf99b8982db9801462d

SHA1
c5aad6d3a1a04f4dfffa0bf8ab5c64d5161d3797

SHA256
e8407556a5ed4ef7b4dc4a2454b1ba82e9016d96b71e598b8c70981c4860ca76

SHA512
4f55812888670754a2cff405cc9a9d9231a55f5db1825502a5e71066763d08f25ed93aa5dc5467bf8edc9eea41c0f65578eb0793b139d0db58702941bd3724f0

Download Submit
memory/976-14-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/976-16-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/976-17-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/1880-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1880-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1880-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1880-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4032-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4032-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4032-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4032-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4032-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4032-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads