tofsee | e4d1f970d321b81f0cd0a2813c6ea2ae0ac3241be8674bed3256c9abcdfb8178

General

Target

2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe
Size

13.7MB
MD5

bb4ce6997466b8fda2246b04edd06463
SHA1

0fb5f3cb1c4b9ba841f5f6e11756ac2f7380251b
SHA256

e4d1f970d321b81f0cd0a2813c6ea2ae0ac3241be8674bed3256c9abcdfb8178
SHA512

20291f3ace94980b4b7dca906a86d5017482ddeb5e9f78fdf513453049ed7c0c7dc2abd4343d1257bc1acc578598ccc89691ac564d8b37e8cb6af14b2f735d63
SSDEEP

49152:9qE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:9qtYc3

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
4852	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\lbrxqpei\ImagePath = "C:\\Windows\\SysWOW64\\lbrxqpei\\wskkhwvj.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe

Deletes itself 1 IoCs

pid	Process
3220	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2244	wskkhwvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 3220	2244	wskkhwvj.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
2988	sc.exe
4172	sc.exe
1452	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4736	1084	WerFault.exe	81
2528	2244	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_bb4ce6997466b8fda2246b04edd06463_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
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	wskkhwvj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 4132	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	82
PID 1084 wrote to memory of 4132	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	82
PID 1084 wrote to memory of 4132	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	82
PID 1084 wrote to memory of 1040	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	84
PID 1084 wrote to memory of 1040	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	84
PID 1084 wrote to memory of 1040	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	84
PID 1084 wrote to memory of 2988	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	86
PID 1084 wrote to memory of 2988	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	86
PID 1084 wrote to memory of 2988	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	86
PID 1084 wrote to memory of 4172	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	88
PID 1084 wrote to memory of 4172	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	88
PID 1084 wrote to memory of 4172	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	88
PID 1084 wrote to memory of 1452	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	90
PID 1084 wrote to memory of 1452	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	90
PID 1084 wrote to memory of 1452	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	90
PID 2244 wrote to memory of 3220	2244	wskkhwvj.exe	93
PID 2244 wrote to memory of 3220	2244	wskkhwvj.exe	93
PID 2244 wrote to memory of 3220	2244	wskkhwvj.exe	93
PID 2244 wrote to memory of 3220	2244	wskkhwvj.exe	93
PID 2244 wrote to memory of 3220	2244	wskkhwvj.exe	93
PID 1084 wrote to memory of 4852	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	95
PID 1084 wrote to memory of 4852	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	95
PID 1084 wrote to memory of 4852	1084	2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbrxqpei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wskkhwvj.exe" C:\Windows\SysWOW64\lbrxqpei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbrxqpei binPath= "C:\Windows\SysWOW64\lbrxqpei\wskkhwvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbrxqpei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbrxqpei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1452
- 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:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1084 -s 1040
  2⤵
  - Program crash
  PID:4736

C:\Windows\SysWOW64\lbrxqpei\wskkhwvj.exe
C:\Windows\SysWOW64\lbrxqpei\wskkhwvj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_bb4ce6997466b8fda2246b04edd06463_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 512
  2⤵
  - Program crash
  PID:2528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1084 -ip 1084
1⤵
PID:1228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2244 -ip 2244
1⤵
PID:4668

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\wskkhwvj.exe

Filesize
11.8MB

MD5
991f4a42ff851f8b3363db9251d39ea2

SHA1
cfc4f31a7e136b93081c4ce0c7eb013e3b56a8b7

SHA256
9965d42357361bba917eeeaaefc632514b424626b965ea69d8c2523c70de681b

SHA512
87d7c5cc0a3897674950a0c0ded324cf8b61cff5ecb1419e295f8081c7e660e8a82832ae0e30ceaf1a9b11630e1b706697291c1c9f63d3b1200147934b118585

Download Submit
memory/1084-1-0x0000000003130000-0x0000000003230000-memory.dmp

Filesize
1024KB

Download
memory/1084-2-0x0000000002F00000-0x0000000002F13000-memory.dmp

Filesize
76KB

Download
memory/1084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1084-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1084-12-0x0000000002F00000-0x0000000002F13000-memory.dmp

Filesize
76KB

Download
memory/1084-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2244-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3220-8-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/3220-14-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/3220-15-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads