tofsee | 287962ba40eaba4f8949856164294a653df5b4ae7b5a467267e4b222aababd8b

General

Target

2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe
Size

12.0MB
MD5

eb73cb7808742759b55e8028762c9848
SHA1

e1e94764c7eaa1821b4471b4946dd085b39747f4
SHA256

287962ba40eaba4f8949856164294a653df5b4ae7b5a467267e4b222aababd8b
SHA512

36baa7989339d158bd4053d7445893787fbc0dc4e49a0e4f94af4e09e868465f9226bc7c0ea113c70835f0508e312707f3bfbe97695b71e26403d2f7d3ef0ba3
SSDEEP

3072:TLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:aOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3836	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\nwvbxcfm\ImagePath = "C:\\Windows\\SysWOW64\\nwvbxcfm\\snrjzkmk.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe

Deletes itself 1 IoCs

pid	Process
3632	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
468	snrjzkmk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 468 set thread context of 3632	468	snrjzkmk.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3480	sc.exe
4488	sc.exe
3840	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
1724	4200	WerFault.exe	82
3452	468	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	cmd.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	snrjzkmk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_eb73cb7808742759b55e8028762c9848_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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 3712	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	83
PID 4200 wrote to memory of 3712	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	83
PID 4200 wrote to memory of 3712	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	83
PID 4200 wrote to memory of 4400	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	85
PID 4200 wrote to memory of 4400	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	85
PID 4200 wrote to memory of 4400	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	85
PID 4200 wrote to memory of 3480	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	87
PID 4200 wrote to memory of 3480	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	87
PID 4200 wrote to memory of 3480	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	87
PID 4200 wrote to memory of 4488	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	89
PID 4200 wrote to memory of 4488	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	89
PID 4200 wrote to memory of 4488	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	89
PID 4200 wrote to memory of 3840	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	91
PID 4200 wrote to memory of 3840	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	91
PID 4200 wrote to memory of 3840	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	91
PID 4200 wrote to memory of 3836	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	94
PID 4200 wrote to memory of 3836	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	94
PID 4200 wrote to memory of 3836	4200	2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe	94
PID 468 wrote to memory of 3632	468	snrjzkmk.exe	100
PID 468 wrote to memory of 3632	468	snrjzkmk.exe	100
PID 468 wrote to memory of 3632	468	snrjzkmk.exe	100
PID 468 wrote to memory of 3632	468	snrjzkmk.exe	100
PID 468 wrote to memory of 3632	468	snrjzkmk.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nwvbxcfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\snrjzkmk.exe" C:\Windows\SysWOW64\nwvbxcfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nwvbxcfm binPath= "C:\Windows\SysWOW64\nwvbxcfm\snrjzkmk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nwvbxcfm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nwvbxcfm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3840
- 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:3836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4200 -s 892
  2⤵
  - Program crash
  PID:1724

C:\Windows\SysWOW64\nwvbxcfm\snrjzkmk.exe
C:\Windows\SysWOW64\nwvbxcfm\snrjzkmk.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-26_eb73cb7808742759b55e8028762c9848_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:468
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 468 -s 512
  2⤵
  - Program crash
  PID:3452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4200 -ip 4200
1⤵
PID:4220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 468 -ip 468
1⤵
PID:1252

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\snrjzkmk.exe

Filesize
11.6MB

MD5
bc3aeacaad88d5f79b2d1b0c2dd6505b

SHA1
28a2a6f0d86eced1517a71b3b347ca58f7f4aad5

SHA256
c9ed14c522bd09ed20918fde47044532ee1cdf601deae9d6718f5fb928af8ddb

SHA512
9fd50aeb505ef173c846951c989c8e77c1346b4b78e10b0eb5927122d7842188f7426ce755e1f06c9ea6a33b9cda4d103deaa5a57c95bfe629a2b96ac8048f86

Download Submit
memory/468-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/468-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/468-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/468-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3632-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3632-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3632-17-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/4200-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4200-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/4200-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4200-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4200-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4200-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads