tofsee | 957a858748e01cebfa48fe2dc6bfa72c0ec2b380e5267bafc3760ace947d4d18

General

Target

2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe
Size

14.0MB
MD5

da390c8c8e0de1ba0d347f63308bc1e0
SHA1

d9ef7a1414863658d11eb5b5b1082da30da01512
SHA256

957a858748e01cebfa48fe2dc6bfa72c0ec2b380e5267bafc3760ace947d4d18
SHA512

9e3fdf31a6d93631f73659b373e35116af70bc74f37ff8f9fbc2e8babac11ad969c2dd22f596164f154ae801cc07d5e10fd1bb9b256e59ce665b400bf965f507
SSDEEP

3072:aLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:DOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
2924	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\ibumsygv\ImagePath = "C:\\Windows\\SysWOW64\\ibumsygv\\kshlywff.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe

Deletes itself 1 IoCs

pid	Process
1920	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2984	kshlywff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 1920	2984	kshlywff.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1912	sc.exe
820	sc.exe
4936	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5044	4828	WerFault.exe	81
4056	2984	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kshlywff.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 4448	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	82
PID 4828 wrote to memory of 4448	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	82
PID 4828 wrote to memory of 4448	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	82
PID 4828 wrote to memory of 3340	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	84
PID 4828 wrote to memory of 3340	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	84
PID 4828 wrote to memory of 3340	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	84
PID 4828 wrote to memory of 1912	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	86
PID 4828 wrote to memory of 1912	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	86
PID 4828 wrote to memory of 1912	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	86
PID 4828 wrote to memory of 820	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	88
PID 4828 wrote to memory of 820	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	88
PID 4828 wrote to memory of 820	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	88
PID 4828 wrote to memory of 4936	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	90
PID 4828 wrote to memory of 4936	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	90
PID 4828 wrote to memory of 4936	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	90
PID 4828 wrote to memory of 2924	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	93
PID 4828 wrote to memory of 2924	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	93
PID 4828 wrote to memory of 2924	4828	2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe	93
PID 2984 wrote to memory of 1920	2984	kshlywff.exe	98
PID 2984 wrote to memory of 1920	2984	kshlywff.exe	98
PID 2984 wrote to memory of 1920	2984	kshlywff.exe	98
PID 2984 wrote to memory of 1920	2984	kshlywff.exe	98
PID 2984 wrote to memory of 1920	2984	kshlywff.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ibumsygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kshlywff.exe" C:\Windows\SysWOW64\ibumsygv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ibumsygv binPath= "C:\Windows\SysWOW64\ibumsygv\kshlywff.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ibumsygv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ibumsygv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4936
- 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:2924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 1044
  2⤵
  - Program crash
  PID:5044

C:\Windows\SysWOW64\ibumsygv\kshlywff.exe
C:\Windows\SysWOW64\ibumsygv\kshlywff.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-29_da390c8c8e0de1ba0d347f63308bc1e0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2984 -s 508
  2⤵
  - Program crash
  PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4828 -ip 4828
1⤵
PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2984 -ip 2984
1⤵
PID:4004

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

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Downloads

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

Filesize
10.9MB

MD5
250637936f0a01a91e7f4b0ac3345b59

SHA1
1bd23b05b6b41baf26c6da3ba9183ea9bcb7bda6

SHA256
6041ac1e4a1d8735c52023af99286c4697c962739825623235c6fd9327abce2c

SHA512
b6454636e7a70c41adff8cad8b91b6712f9a21125cf512b2793f4b850724fd468669299c49fd6cc89916e4c5301e1271b19407d55349f8fd2a58b93bce4c92ef

Download Submit
memory/1920-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1920-17-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1920-16-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/2984-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2984-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2984-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2984-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4828-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4828-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4828-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/4828-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4828-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4828-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads