tofsee | 8caaa77edf1243eec9a766ad37679232215994a8d7f9d2d45d1778f4577f9a26

General

Target

2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe
Size

13.1MB
MD5

cbe4039a430cd860ed47cdb1d3e0401a
SHA1

4fc93cbda5f8e8b69547b1ebc3ef3ff544bbc977
SHA256

8caaa77edf1243eec9a766ad37679232215994a8d7f9d2d45d1778f4577f9a26
SHA512

a0e587337edc018e39a5d5f518504f2d153738595590e1ae1b8eb75912502308dc89914393d990ead4d0b9a68d1e6ca5fbbe08bbfc9b20c34738dff7713d0fc0
SSDEEP

12288:TVbj7zJB99tzBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBv:TJzXd

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
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
4952	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\xlrqahsm\ImagePath = "C:\\Windows\\SysWOW64\\xlrqahsm\\hjcnucqg.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe

Deletes itself 1 IoCs

pid	Process
4884	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	hjcnucqg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2436 set thread context of 4884	2436	hjcnucqg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
988	sc.exe
4120	sc.exe
4220	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 opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hjcnucqg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe
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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 4196	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	85
PID 2116 wrote to memory of 4196	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	85
PID 2116 wrote to memory of 4196	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	85
PID 2116 wrote to memory of 2296	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	87
PID 2116 wrote to memory of 2296	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	87
PID 2116 wrote to memory of 2296	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	87
PID 2116 wrote to memory of 988	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	89
PID 2116 wrote to memory of 988	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	89
PID 2116 wrote to memory of 988	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	89
PID 2116 wrote to memory of 4120	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	91
PID 2116 wrote to memory of 4120	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	91
PID 2116 wrote to memory of 4120	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	91
PID 2116 wrote to memory of 4220	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	93
PID 2116 wrote to memory of 4220	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	93
PID 2116 wrote to memory of 4220	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	93
PID 2116 wrote to memory of 4952	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	96
PID 2116 wrote to memory of 4952	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	96
PID 2116 wrote to memory of 4952	2116	2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe	96
PID 2436 wrote to memory of 4884	2436	hjcnucqg.exe	98
PID 2436 wrote to memory of 4884	2436	hjcnucqg.exe	98
PID 2436 wrote to memory of 4884	2436	hjcnucqg.exe	98
PID 2436 wrote to memory of 4884	2436	hjcnucqg.exe	98
PID 2436 wrote to memory of 4884	2436	hjcnucqg.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xlrqahsm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hjcnucqg.exe" C:\Windows\SysWOW64\xlrqahsm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xlrqahsm binPath= "C:\Windows\SysWOW64\xlrqahsm\hjcnucqg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xlrqahsm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xlrqahsm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4220
- 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:4952

C:\Windows\SysWOW64\xlrqahsm\hjcnucqg.exe
C:\Windows\SysWOW64\xlrqahsm\hjcnucqg.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-10-08_cbe4039a430cd860ed47cdb1d3e0401a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4884

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hjcnucqg.exe

Filesize
12.8MB

MD5
ac3f66e94dcb83ceb7f8024909336a2b

SHA1
11365810fb913a74ab5a620ce206535e9b4e6e48

SHA256
258cd507895d397ae15c0b580f3598ded8e3e4aa7b24a229e00c9f62c1df22a4

SHA512
b77ad03d80ce74b933f4bdce63d16cd5e559f8f5d60533859fd6decb6c0ea430858ea8b4b02a0bb423b1188273ab4aa367c74767cdfa29f98fd6c43e7d0199ea

Download Submit
memory/2116-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2116-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/2116-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2116-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2116-8-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/2116-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/2436-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2436-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2436-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2436-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4884-19-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4884-18-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/4884-14-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads