tofsee | c4c31118bfe9b71372e7a3b0d8af32cb2fbdc90d2907a1527b68757c6a625972

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-02-2025 04:47

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General

Target

2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe
Size

11.8MB
MD5

3c35df53659a5e0bf3470dae3ca6223f
SHA1

6299504ef85eb56575fabf71ac081f9bc77e6557
SHA256

c4c31118bfe9b71372e7a3b0d8af32cb2fbdc90d2907a1527b68757c6a625972
SHA512

ae63f20babc5aed1b83862b161fcf010d80ba58bd75bd75592ca0554d6d5b1997cf139574a9072f826f5b0b9978caaef9515123b6086f65559ae6f588f44adfa
SSDEEP

3072:ULBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/S:ROMdRQr7OB0ypmMXnl8XEPM3noSWOCr

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\fjsxsjjz = "0"	svchost.exe

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
2844	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\fjsxsjjz\ImagePath = "C:\\Windows\\SysWOW64\\fjsxsjjz\\kirsbxmi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2328	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2736	kirsbxmi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 2328	2736	kirsbxmi.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
1820	sc.exe
2904	sc.exe
2992	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_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	kirsbxmi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2412	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	30
PID 1724 wrote to memory of 2412	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	30
PID 1724 wrote to memory of 2412	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	30
PID 1724 wrote to memory of 2412	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	30
PID 1724 wrote to memory of 2968	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	32
PID 1724 wrote to memory of 2968	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	32
PID 1724 wrote to memory of 2968	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	32
PID 1724 wrote to memory of 2968	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	32
PID 1724 wrote to memory of 1820	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	34
PID 1724 wrote to memory of 1820	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	34
PID 1724 wrote to memory of 1820	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	34
PID 1724 wrote to memory of 1820	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	34
PID 1724 wrote to memory of 2904	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	36
PID 1724 wrote to memory of 2904	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	36
PID 1724 wrote to memory of 2904	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	36
PID 1724 wrote to memory of 2904	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	36
PID 1724 wrote to memory of 2992	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	38
PID 1724 wrote to memory of 2992	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	38
PID 1724 wrote to memory of 2992	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	38
PID 1724 wrote to memory of 2992	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	38
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 2736 wrote to memory of 2328	2736	kirsbxmi.exe	41
PID 1724 wrote to memory of 2844	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	42
PID 1724 wrote to memory of 2844	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	42
PID 1724 wrote to memory of 2844	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	42
PID 1724 wrote to memory of 2844	1724	2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fjsxsjjz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kirsbxmi.exe" C:\Windows\SysWOW64\fjsxsjjz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fjsxsjjz binPath= "C:\Windows\SysWOW64\fjsxsjjz\kirsbxmi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fjsxsjjz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fjsxsjjz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2992
- 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:2844

C:\Windows\SysWOW64\fjsxsjjz\kirsbxmi.exe
C:\Windows\SysWOW64\fjsxsjjz\kirsbxmi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_3c35df53659a5e0bf3470dae3ca6223f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.9MB

MD5
60233b3d97bcfcecc6268588f7fdfbb4

SHA1
2e49f197b0e9d16c70689501f00c8e181208e3b5

SHA256
cef88e639739b9d55dc284c2837b1e8a4575eb9167d30a32e692d983bd9e41c9

SHA512
83cee6186528d84086cc06a0ae8dc188c95e32985229b13bc1fddd3bcc8496495f7aede6d8e311cc35f1e99033dce60bb3f1c00ca85d687354494b87f9802615

Download Submit
memory/1724-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/1724-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1724-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1724-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1724-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2328-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2328-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2328-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2328-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2328-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2736-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads