tofsee | cf9c45694ab7273150895ccd26f843d983702b838b11df8d517378705c5b69e9

General

Target

2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe
Size

10.8MB
MD5

c2ba4ec1ff02e603663c83ae177f37cb
SHA1

12da4811e21c55fc6d49150f7bd1f70e25d1e349
SHA256

cf9c45694ab7273150895ccd26f843d983702b838b11df8d517378705c5b69e9
SHA512

4566a08e2fcb953efa778077d695f85b7d50dabdf3b266e1dd959481eaef7704724e6267f7f2ca8fd914129045c61670ae524b577e95f78a4d83bf104880dd0a
SSDEEP

49152:WqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:WqtYc3

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
3188	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\ymeazhvp\ImagePath = "C:\\Windows\\SysWOW64\\ymeazhvp\\uthjxuvn.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe

Deletes itself 1 IoCs

pid	Process
2312	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2900	uthjxuvn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2900 set thread context of 2312	2900	uthjxuvn.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3820	sc.exe
2116	sc.exe
1172	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1628	2900	WerFault.exe	94
60	1576	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uthjxuvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 1548	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	83
PID 1576 wrote to memory of 1548	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	83
PID 1576 wrote to memory of 1548	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	83
PID 1576 wrote to memory of 2744	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	85
PID 1576 wrote to memory of 2744	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	85
PID 1576 wrote to memory of 2744	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	85
PID 1576 wrote to memory of 3820	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	87
PID 1576 wrote to memory of 3820	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	87
PID 1576 wrote to memory of 3820	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	87
PID 1576 wrote to memory of 2116	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	89
PID 1576 wrote to memory of 2116	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	89
PID 1576 wrote to memory of 2116	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	89
PID 1576 wrote to memory of 1172	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	92
PID 1576 wrote to memory of 1172	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	92
PID 1576 wrote to memory of 1172	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	92
PID 2900 wrote to memory of 2312	2900	uthjxuvn.exe	95
PID 2900 wrote to memory of 2312	2900	uthjxuvn.exe	95
PID 2900 wrote to memory of 2312	2900	uthjxuvn.exe	95
PID 2900 wrote to memory of 2312	2900	uthjxuvn.exe	95
PID 2900 wrote to memory of 2312	2900	uthjxuvn.exe	95
PID 1576 wrote to memory of 3188	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	97
PID 1576 wrote to memory of 3188	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	97
PID 1576 wrote to memory of 3188	1576	2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ymeazhvp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uthjxuvn.exe" C:\Windows\SysWOW64\ymeazhvp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ymeazhvp binPath= "C:\Windows\SysWOW64\ymeazhvp\uthjxuvn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ymeazhvp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ymeazhvp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1172
- 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:3188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1576 -s 1268
  2⤵
  - Program crash
  PID:60

C:\Windows\SysWOW64\ymeazhvp\uthjxuvn.exe
C:\Windows\SysWOW64\ymeazhvp\uthjxuvn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_c2ba4ec1ff02e603663c83ae177f37cb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2900
- 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 2900 -s 560
  2⤵
  - Program crash
  PID:1628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2900 -ip 2900
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1576 -ip 1576
1⤵
PID:3740

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\uthjxuvn.exe

Filesize
12.9MB

MD5
e5a12929f5d65bc993e6f64a4d90df2b

SHA1
81d489a42f9700a3c73b2f82998e0af94dd5aca4

SHA256
c385b1c37057ecd3e65d86f9841145c6583292d5b1977c47c98018a5f69c329c

SHA512
9b85e1cc70a36cea754711d9d05bbecc7a4abf9c5b8d941399d23d9648051bb8da7dbe834aec172596e95791c71dcabdeacfffaefaa08b2f1ca526401104f869

Download Submit
memory/1576-1-0x0000000002F70000-0x0000000003070000-memory.dmp

Filesize
1024KB

Download
memory/1576-2-0x0000000002EF0000-0x0000000002F03000-memory.dmp

Filesize
76KB

Download
memory/1576-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1576-12-0x0000000002EF0000-0x0000000002F03000-memory.dmp

Filesize
76KB

Download
memory/1576-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1576-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2312-8-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2312-14-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2312-15-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/2900-10-0x0000000000400000-0x0000000002DC3000-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