tofsee | a1d5bfbffc5aec432e7e8a2a5be5ffe16f7489c545fcb616df931f2e95591803

General

Target

2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe
Size

13.6MB
MD5

3a520821a3474fa9f0a5f78ae6c2ba71
SHA1

52c182776432498305b5750574a9184a62ad72ec
SHA256

a1d5bfbffc5aec432e7e8a2a5be5ffe16f7489c545fcb616df931f2e95591803
SHA512

2d02478bd1c058ad2b659bcf4eea56082edc8bcb6c76c5a73144950f83850986e799f12a7dffc2668e44c66a33553c3d0084fb228f52d9e0bd86b003721a9e5a
SSDEEP

3072:5LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:8OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
4672	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\lyuoexwe\ImagePath = "C:\\Windows\\SysWOW64\\lyuoexwe\\zcicrcnt.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe

Deletes itself 1 IoCs

pid	Process
3212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4656	zcicrcnt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4656 set thread context of 3212	4656	zcicrcnt.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
848	sc.exe
3804	sc.exe
1752	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
2188	4248	WerFault.exe	82
1244	4656	WerFault.exe	94

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zcicrcnt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 392	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	84
PID 4248 wrote to memory of 392	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	84
PID 4248 wrote to memory of 392	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	84
PID 4248 wrote to memory of 3600	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	86
PID 4248 wrote to memory of 3600	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	86
PID 4248 wrote to memory of 3600	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	86
PID 4248 wrote to memory of 848	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	88
PID 4248 wrote to memory of 848	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	88
PID 4248 wrote to memory of 848	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	88
PID 4248 wrote to memory of 3804	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	90
PID 4248 wrote to memory of 3804	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	90
PID 4248 wrote to memory of 3804	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	90
PID 4248 wrote to memory of 1752	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	92
PID 4248 wrote to memory of 1752	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	92
PID 4248 wrote to memory of 1752	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	92
PID 4248 wrote to memory of 4672	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	95
PID 4248 wrote to memory of 4672	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	95
PID 4248 wrote to memory of 4672	4248	2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe	95
PID 4656 wrote to memory of 3212	4656	zcicrcnt.exe	103
PID 4656 wrote to memory of 3212	4656	zcicrcnt.exe	103
PID 4656 wrote to memory of 3212	4656	zcicrcnt.exe	103
PID 4656 wrote to memory of 3212	4656	zcicrcnt.exe	103
PID 4656 wrote to memory of 3212	4656	zcicrcnt.exe	103

C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lyuoexwe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zcicrcnt.exe" C:\Windows\SysWOW64\lyuoexwe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lyuoexwe binPath= "C:\Windows\SysWOW64\lyuoexwe\zcicrcnt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lyuoexwe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lyuoexwe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1752
- 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:4672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 1284
  2⤵
  - Program crash
  PID:2188

C:\Windows\SysWOW64\lyuoexwe\zcicrcnt.exe
C:\Windows\SysWOW64\lyuoexwe\zcicrcnt.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-26_3a520821a3474fa9f0a5f78ae6c2ba71_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 508
  2⤵
  - Program crash
  PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4248 -ip 4248
1⤵
PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4656 -ip 4656
1⤵
PID:628

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\zcicrcnt.exe

Filesize
12.1MB

MD5
fad69f38a4097171926d46a26d6e4867

SHA1
fe3952a486f93312bd16a83675f09e6d7bea2c0a

SHA256
44afc4b2fb0d597a714789500c04e2a45c0f1d14f27d0d0155538e4046ea36d5

SHA512
4a664501d0c8aecc6003139eabb3e14b86032a327f5e00307e1fd960b98b30859d7c20f5bc42466893ab0f8bde1648b6d0d61b7e463e5fe7a3e02547c7f28040

Download Submit
memory/3212-14-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/3212-17-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/3212-16-0x0000000000980000-0x0000000000995000-memory.dmp

Filesize
84KB

Download
memory/4248-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4248-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4248-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download
memory/4248-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4248-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4248-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4656-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4656-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4656-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4656-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads