tofsee | 343301024c725ec3197fabb64ab1877d8cedaa8871f430f091f379388675726d

General

Target

2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe
Size

10.7MB
MD5

1f97aaa6dea7299daa8396d2c89e0f0d
SHA1

f41b886ac1b6811d7fd52a3a621f8e5ca199dafb
SHA256

343301024c725ec3197fabb64ab1877d8cedaa8871f430f091f379388675726d
SHA512

4fdfb132a2031daed6c8550e235c281da2940d51aef2f566329582574b19c56d493042aff8f0a452eb238af7aa9a3400dd436080108253764953ee0d68e35e0f
SSDEEP

3072:qLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:TOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2348	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\pgyvybjk\ImagePath = "C:\\Windows\\SysWOW64\\pgyvybjk\\namjcpue.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	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe

Deletes itself 1 IoCs

pid	Process
3024	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3616	namjcpue.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3616 set thread context of 3024	3616	namjcpue.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
220	sc.exe
1444	sc.exe
2192	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
2996	3916	WerFault.exe	82
3168	3616	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	netsh.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	namjcpue.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 208	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	84
PID 3916 wrote to memory of 208	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	84
PID 3916 wrote to memory of 208	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	84
PID 3916 wrote to memory of 4144	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	86
PID 3916 wrote to memory of 4144	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	86
PID 3916 wrote to memory of 4144	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	86
PID 3916 wrote to memory of 220	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	88
PID 3916 wrote to memory of 220	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	88
PID 3916 wrote to memory of 220	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	88
PID 3916 wrote to memory of 1444	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	90
PID 3916 wrote to memory of 1444	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	90
PID 3916 wrote to memory of 1444	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	90
PID 3916 wrote to memory of 2192	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	92
PID 3916 wrote to memory of 2192	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	92
PID 3916 wrote to memory of 2192	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	92
PID 3916 wrote to memory of 2348	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	95
PID 3916 wrote to memory of 2348	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	95
PID 3916 wrote to memory of 2348	3916	2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe	95
PID 3616 wrote to memory of 3024	3616	namjcpue.exe	101
PID 3616 wrote to memory of 3024	3616	namjcpue.exe	101
PID 3616 wrote to memory of 3024	3616	namjcpue.exe	101
PID 3616 wrote to memory of 3024	3616	namjcpue.exe	101
PID 3616 wrote to memory of 3024	3616	namjcpue.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pgyvybjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\namjcpue.exe" C:\Windows\SysWOW64\pgyvybjk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pgyvybjk binPath= "C:\Windows\SysWOW64\pgyvybjk\namjcpue.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pgyvybjk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pgyvybjk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- 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:2348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 592
  2⤵
  - Program crash
  PID:2996

C:\Windows\SysWOW64\pgyvybjk\namjcpue.exe
C:\Windows\SysWOW64\pgyvybjk\namjcpue.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-30_1f97aaa6dea7299daa8396d2c89e0f0d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3616 -s 508
  2⤵
  - Program crash
  PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3916 -ip 3916
1⤵
PID:4756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 3616 -ip 3616
1⤵
PID:4820

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\namjcpue.exe

Filesize
10.7MB

MD5
546aa430a87e93d7d747c3196e51ea6d

SHA1
d4a6bc0a684fe87e5e22df492b056f8220ee52f6

SHA256
7d443e739964d692befd22aeff91258b8488eb0d9ed3596ac432177dd82b5839

SHA512
d81799da614d73bd5857fea4dfdbb69363a00a2f4ccebbbcf1943fef9d3c48177d16fb822b758fedaa773f618f80f60f478323cba65d09b64399b6ac21a5b5f1

Download Submit
memory/3024-14-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3024-17-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3024-16-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/3616-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3616-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3616-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3616-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3916-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/3916-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/3916-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3916-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads