tofsee | 7e070b79eb7d7857b5bcd1d356b387e7e24292e096035e22938f5e24e6182e48

General

Target

2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe
Size

12.1MB
MD5

0622524f0e26a6bfe6ca542938b1a04e
SHA1

8d134385afd883331538bf88d563445dd7a89072
SHA256

7e070b79eb7d7857b5bcd1d356b387e7e24292e096035e22938f5e24e6182e48
SHA512

b56e30fd1b2261006e8ddbd6d5f6629f5429beb3df0f82874053ee96fa44e607ae67a7ae6d18b2a6765104a06d588175c100e1088afe7d69149a0b709965237b
SSDEEP

6144:9LQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQN:uTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2704	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\cgbcsdiq\ImagePath = "C:\\Windows\\SysWOW64\\cgbcsdiq\\zhwanluu.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-1-5-21-4174397412-4125106315-2776226590-1000\Control Panel\International\Geo\Nation	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe

Deletes itself 1 IoCs

pid	Process
4104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
388	zhwanluu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 388 set thread context of 4104	388	zhwanluu.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
320	sc.exe
688	sc.exe
1608	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
3576	388	WerFault.exe	96
3900	5100	WerFault.exe	82

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	zhwanluu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_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	netsh.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 4628	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	86
PID 5100 wrote to memory of 4628	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	86
PID 5100 wrote to memory of 4628	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	86
PID 5100 wrote to memory of 4660	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	88
PID 5100 wrote to memory of 4660	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	88
PID 5100 wrote to memory of 4660	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	88
PID 5100 wrote to memory of 320	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	90
PID 5100 wrote to memory of 320	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	90
PID 5100 wrote to memory of 320	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	90
PID 5100 wrote to memory of 688	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	92
PID 5100 wrote to memory of 688	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	92
PID 5100 wrote to memory of 688	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	92
PID 5100 wrote to memory of 1608	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	94
PID 5100 wrote to memory of 1608	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	94
PID 5100 wrote to memory of 1608	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	94
PID 5100 wrote to memory of 2704	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	97
PID 5100 wrote to memory of 2704	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	97
PID 5100 wrote to memory of 2704	5100	2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe	97
PID 388 wrote to memory of 4104	388	zhwanluu.exe	100
PID 388 wrote to memory of 4104	388	zhwanluu.exe	100
PID 388 wrote to memory of 4104	388	zhwanluu.exe	100
PID 388 wrote to memory of 4104	388	zhwanluu.exe	100
PID 388 wrote to memory of 4104	388	zhwanluu.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cgbcsdiq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zhwanluu.exe" C:\Windows\SysWOW64\cgbcsdiq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cgbcsdiq binPath= "C:\Windows\SysWOW64\cgbcsdiq\zhwanluu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cgbcsdiq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cgbcsdiq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1608
- 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:2704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5100 -s 1180
  2⤵
  - Program crash
  PID:3900

C:\Windows\SysWOW64\cgbcsdiq\zhwanluu.exe
C:\Windows\SysWOW64\cgbcsdiq\zhwanluu.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_0622524f0e26a6bfe6ca542938b1a04e_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 512
  2⤵
  - Program crash
  PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5100 -ip 5100
1⤵
PID:4428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 388 -ip 388
1⤵
PID:1392

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\zhwanluu.exe

Filesize
10.0MB

MD5
a5cdca3f5ec8eaf26ff23874143a2702

SHA1
2314a189862fd2f16fd1d65e280398f5b784c15b

SHA256
95e8fd660551ab34902448b12aa853c2cfc4f790a3e003321c17df12b38fde0c

SHA512
498f974a79618529d4152f186215f643f1791ffbb80c2c0cbeaa43818071ea59371caab0b50702359805dde9b6296b975ecb2f6de4de3742d4871dd7f94acb9b

Download Submit
memory/388-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/388-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4104-12-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4104-9-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4104-18-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4104-19-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/4104-20-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/5100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/5100-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/5100-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5100-16-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/5100-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads