tofsee | 058a4b0cbcd8d007a10abd24a3c4abf244a043d0b7aba2c09f7aed9177beb2b1

General

Target

2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe
Size

10.7MB
MD5

6318219e47326940bedbba8cf354dd24
SHA1

ff83e6cd1917f7f383eab9661d077feb5ec5de18
SHA256

058a4b0cbcd8d007a10abd24a3c4abf244a043d0b7aba2c09f7aed9177beb2b1
SHA512

bf0655b83e182eb37599bf46fa02edca7c75a15569c716abf17cd8f9531ada94535dd1154e32e9f274bd1b7553f43a051ad69bb1dcd2c55aded644dc1746dfda
SSDEEP

49152:YqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:YqtYc3

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
3532	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\uevzmusp\ImagePath = "C:\\Windows\\SysWOW64\\uevzmusp\\zlkyjtbv.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	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe

Deletes itself 1 IoCs

pid	Process
1308	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1796	zlkyjtbv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1796 set thread context of 1308	1796	zlkyjtbv.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
2088	sc.exe
1052	sc.exe
3016	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
2140	1796	WerFault.exe	93
3996	2784	WerFault.exe	82

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	zlkyjtbv.exe
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	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 3184	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	83
PID 2784 wrote to memory of 3184	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	83
PID 2784 wrote to memory of 3184	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	83
PID 2784 wrote to memory of 3488	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	85
PID 2784 wrote to memory of 3488	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	85
PID 2784 wrote to memory of 3488	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	85
PID 2784 wrote to memory of 3016	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	87
PID 2784 wrote to memory of 3016	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	87
PID 2784 wrote to memory of 3016	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	87
PID 2784 wrote to memory of 2088	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	89
PID 2784 wrote to memory of 2088	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	89
PID 2784 wrote to memory of 2088	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	89
PID 2784 wrote to memory of 1052	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	91
PID 2784 wrote to memory of 1052	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	91
PID 2784 wrote to memory of 1052	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	91
PID 1796 wrote to memory of 1308	1796	zlkyjtbv.exe	94
PID 1796 wrote to memory of 1308	1796	zlkyjtbv.exe	94
PID 1796 wrote to memory of 1308	1796	zlkyjtbv.exe	94
PID 1796 wrote to memory of 1308	1796	zlkyjtbv.exe	94
PID 1796 wrote to memory of 1308	1796	zlkyjtbv.exe	94
PID 2784 wrote to memory of 3532	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	97
PID 2784 wrote to memory of 3532	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	97
PID 2784 wrote to memory of 3532	2784	2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uevzmusp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlkyjtbv.exe" C:\Windows\SysWOW64\uevzmusp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uevzmusp binPath= "C:\Windows\SysWOW64\uevzmusp\zlkyjtbv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uevzmusp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uevzmusp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1052
- 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:3532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 792
  2⤵
  - Program crash
  PID:3996

C:\Windows\SysWOW64\uevzmusp\zlkyjtbv.exe
C:\Windows\SysWOW64\uevzmusp\zlkyjtbv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_6318219e47326940bedbba8cf354dd24_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1796 -s 528
  2⤵
  - Program crash
  PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2784 -ip 2784
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1796 -ip 1796
1⤵
PID:3076

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\zlkyjtbv.exe

Filesize
13.8MB

MD5
7f4786a6e4fe97bfaeabe361924a8ca6

SHA1
454802abca610637ef6013398f5dcafdd27a7463

SHA256
4119c0f3104f7ad95952a660548c28ec83c7b27b11bf67b672043d5dd954bbc7

SHA512
54ac466948e203894c2e1f3d4a22794a4e18e9e11f98b1b65d3935860c7af80a5f2d2542f878f14e110cda3c30d23f59a98b4442e51ccc0471c20e012209ec18

Download Submit
memory/1308-8-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/1308-14-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/1308-15-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/1796-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2784-1-0x0000000002FC0000-0x00000000030C0000-memory.dmp

Filesize
1024KB

Download
memory/2784-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2784-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2784-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2784-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/2784-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads