tofsee | ec204d38cfcae36249dae54e9cf9d09294f443a396d40ad32c85ffa2e7bcbeee

General

Target

2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe
Size

12.7MB
MD5

c8a017be648771367c0a450636071da5
SHA1

4732517baf98a7007f3e47150312b5944d1f623b
SHA256

ec204d38cfcae36249dae54e9cf9d09294f443a396d40ad32c85ffa2e7bcbeee
SHA512

997b4562b60789d77948dc95f127d50d6ec8a1eb7d6c4d34cf9887e6f3a8327f9f319171f3b891c7dd4b4fb731e8bf3555ec4d9cd655ee1ef4bfe2f510385d16
SSDEEP

3072:NLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:QOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
4480	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\ygdzeubu\ImagePath = "C:\\Windows\\SysWOW64\\ygdzeubu\\mohszhvl.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe

Deletes itself 1 IoCs

pid	Process
1892	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3748	mohszhvl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3748 set thread context of 1892	3748	mohszhvl.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4504	sc.exe
3652	sc.exe
4172	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
4676	3080	WerFault.exe	81
4524	3748	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	cmd.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	2024-12-30_c8a017be648771367c0a450636071da5_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mohszhvl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 2996	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	82
PID 3080 wrote to memory of 2996	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	82
PID 3080 wrote to memory of 2996	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	82
PID 3080 wrote to memory of 400	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	84
PID 3080 wrote to memory of 400	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	84
PID 3080 wrote to memory of 400	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	84
PID 3080 wrote to memory of 3652	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	86
PID 3080 wrote to memory of 3652	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	86
PID 3080 wrote to memory of 3652	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	86
PID 3080 wrote to memory of 4172	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	88
PID 3080 wrote to memory of 4172	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	88
PID 3080 wrote to memory of 4172	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	88
PID 3080 wrote to memory of 4504	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	90
PID 3080 wrote to memory of 4504	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	90
PID 3080 wrote to memory of 4504	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	90
PID 3080 wrote to memory of 4480	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	93
PID 3080 wrote to memory of 4480	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	93
PID 3080 wrote to memory of 4480	3080	2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe	93
PID 3748 wrote to memory of 1892	3748	mohszhvl.exe	100
PID 3748 wrote to memory of 1892	3748	mohszhvl.exe	100
PID 3748 wrote to memory of 1892	3748	mohszhvl.exe	100
PID 3748 wrote to memory of 1892	3748	mohszhvl.exe	100
PID 3748 wrote to memory of 1892	3748	mohszhvl.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ygdzeubu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mohszhvl.exe" C:\Windows\SysWOW64\ygdzeubu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ygdzeubu binPath= "C:\Windows\SysWOW64\ygdzeubu\mohszhvl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ygdzeubu "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 ygdzeubu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4504
- 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:4480
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 1028
  2⤵
  - Program crash
  PID:4676

C:\Windows\SysWOW64\ygdzeubu\mohszhvl.exe
C:\Windows\SysWOW64\ygdzeubu\mohszhvl.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-30_c8a017be648771367c0a450636071da5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 512
  2⤵
  - Program crash
  PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3080 -ip 3080
1⤵
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3748 -ip 3748
1⤵
PID:3960

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\mohszhvl.exe

Filesize
13.8MB

MD5
545d594743ce8548c7e105b9abc34f35

SHA1
67751cd327c2bce38e89b01ba52ad0623efbd2ec

SHA256
ef1742b792505f93104f41941683488f6b7acc840779f039fc967412e5912197

SHA512
5f99b2b72fe08c773004e98d181f297b0d166afc11e0a7f3a08bafae6ddecacdcc8f24506d60b351610546f22381aec45f0e95486feb87ad47a92a9c7629e7b6

Download Submit
memory/1892-14-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/1892-17-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/1892-16-0x0000000000700000-0x0000000000715000-memory.dmp

Filesize
84KB

Download
memory/3080-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/3080-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/3080-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/3748-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3748-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3748-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3748-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads