tofsee | e8407556a5ed4ef7b4dc4a2454b1ba82e9016d96b71e598b8c70981c4860ca76

General

Target

2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe
Size

10.7MB
MD5

3b1c42b9fc861bf99b8982db9801462d
SHA1

c5aad6d3a1a04f4dfffa0bf8ab5c64d5161d3797
SHA256

e8407556a5ed4ef7b4dc4a2454b1ba82e9016d96b71e598b8c70981c4860ca76
SHA512

4f55812888670754a2cff405cc9a9d9231a55f5db1825502a5e71066763d08f25ed93aa5dc5467bf8edc9eea41c0f65578eb0793b139d0db58702941bd3724f0
SSDEEP

3072:nLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:+OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
400	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\hviqjuhu\ImagePath = "C:\\Windows\\SysWOW64\\hviqjuhu\\tbquhfoo.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe

Deletes itself 1 IoCs

pid	Process
2312	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3612	tbquhfoo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3612 set thread context of 2312	3612	tbquhfoo.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4004	sc.exe
2684	sc.exe
3152	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
1836	4600	WerFault.exe	81
3608	3612	WerFault.exe	92

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	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	tbquhfoo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 3616	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	82
PID 4600 wrote to memory of 3616	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	82
PID 4600 wrote to memory of 3616	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	82
PID 4600 wrote to memory of 2892	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	84
PID 4600 wrote to memory of 2892	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	84
PID 4600 wrote to memory of 2892	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	84
PID 4600 wrote to memory of 4004	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	86
PID 4600 wrote to memory of 4004	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	86
PID 4600 wrote to memory of 4004	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	86
PID 4600 wrote to memory of 2684	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	88
PID 4600 wrote to memory of 2684	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	88
PID 4600 wrote to memory of 2684	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	88
PID 4600 wrote to memory of 3152	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	90
PID 4600 wrote to memory of 3152	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	90
PID 4600 wrote to memory of 3152	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	90
PID 4600 wrote to memory of 400	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	94
PID 4600 wrote to memory of 400	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	94
PID 4600 wrote to memory of 400	4600	2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe	94
PID 3612 wrote to memory of 2312	3612	tbquhfoo.exe	102
PID 3612 wrote to memory of 2312	3612	tbquhfoo.exe	102
PID 3612 wrote to memory of 2312	3612	tbquhfoo.exe	102
PID 3612 wrote to memory of 2312	3612	tbquhfoo.exe	102
PID 3612 wrote to memory of 2312	3612	tbquhfoo.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hviqjuhu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tbquhfoo.exe" C:\Windows\SysWOW64\hviqjuhu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hviqjuhu binPath= "C:\Windows\SysWOW64\hviqjuhu\tbquhfoo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hviqjuhu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hviqjuhu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3152
- 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:400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 1160
  2⤵
  - Program crash
  PID:1836

C:\Windows\SysWOW64\hviqjuhu\tbquhfoo.exe
C:\Windows\SysWOW64\hviqjuhu\tbquhfoo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_3b1c42b9fc861bf99b8982db9801462d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3612
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3612 -s 508
  2⤵
  - Program crash
  PID:3608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4600 -ip 4600
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3612 -ip 3612
1⤵
PID:2896

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\tbquhfoo.exe

Filesize
11.5MB

MD5
e9c1ad443deaca6eb06de5b8bafe0170

SHA1
64cecd9aa3ceb32c1e07f9c9573d9f5e215c2a35

SHA256
c42d493cd8a035a232e31b880f87ed45450d5ee58a12a0d7679fe9d158e54329

SHA512
9f45a7f6a78a4f47ba4092e245097a8ae05278b915444c86ac08b957e51ef19b53a6fc67d0f68355e3aa98fcd3894f97b1835e295b638ad3bff5a82f0214e066

Download Submit
memory/2312-14-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/2312-17-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/2312-16-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3612-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3612-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3612-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3612-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4600-8-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/4600-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/4600-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4600-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4600-2-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads