tofsee | 1b67228067476adba101405a8a977dc25acb4080c0e2f49674aa412185fc5804

General

Target

5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe
Size

13.5MB
MD5

4561b81f98ef3192665759b2266f746a
SHA1

5e7efc91102e748bbeb903ae2f64aa212540a1a8
SHA256

5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8
SHA512

40bf6776e363f270922d71d67eda0297615fa8765dee88602fceeebda827abb28f923e31a4f0dec4d771af2fe1be3509179ab635ef64b0168cbb00d40f7dd120
SSDEEP

49152:zakyihKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKhKl:zaky

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
2064	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\ppxfraho\ImagePath = "C:\\Windows\\SysWOW64\\ppxfraho\\zubyxuqr.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe

Deletes itself 1 IoCs

pid	Process
3504	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1148	zubyxuqr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 3504	1148	zubyxuqr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2736	sc.exe
456	sc.exe
736	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2328	2680	WerFault.exe	81
3540	1148	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zubyxuqr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.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 2680 wrote to memory of 4596	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	82
PID 2680 wrote to memory of 4596	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	82
PID 2680 wrote to memory of 4596	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	82
PID 2680 wrote to memory of 4628	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	84
PID 2680 wrote to memory of 4628	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	84
PID 2680 wrote to memory of 4628	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	84
PID 2680 wrote to memory of 2736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	86
PID 2680 wrote to memory of 2736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	86
PID 2680 wrote to memory of 2736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	86
PID 2680 wrote to memory of 456	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	88
PID 2680 wrote to memory of 456	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	88
PID 2680 wrote to memory of 456	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	88
PID 2680 wrote to memory of 736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	90
PID 2680 wrote to memory of 736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	90
PID 2680 wrote to memory of 736	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	90
PID 2680 wrote to memory of 2064	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	93
PID 2680 wrote to memory of 2064	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	93
PID 2680 wrote to memory of 2064	2680	5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe	93
PID 1148 wrote to memory of 3504	1148	zubyxuqr.exe	98
PID 1148 wrote to memory of 3504	1148	zubyxuqr.exe	98
PID 1148 wrote to memory of 3504	1148	zubyxuqr.exe	98
PID 1148 wrote to memory of 3504	1148	zubyxuqr.exe	98
PID 1148 wrote to memory of 3504	1148	zubyxuqr.exe	98

C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe
"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ppxfraho\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zubyxuqr.exe" C:\Windows\SysWOW64\ppxfraho\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ppxfraho binPath= "C:\Windows\SysWOW64\ppxfraho\zubyxuqr.exe /d\"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ppxfraho "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ppxfraho
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:736
- 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:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 1284
  2⤵
  - Program crash
  PID:2328

C:\Windows\SysWOW64\ppxfraho\zubyxuqr.exe
C:\Windows\SysWOW64\ppxfraho\zubyxuqr.exe /d"C:\Users\Admin\AppData\Local\Temp\5d3df0a18dce44d82712f8304784c53dcd880ddece5cc4bbf19720150ae4ffc8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1148 -s 504
  2⤵
  - Program crash
  PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2680 -ip 2680
1⤵
PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1148 -ip 1148
1⤵
PID:3520

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\zubyxuqr.exe

Filesize
12.1MB

MD5
a0038dff48699a0f7180434d9844f75e

SHA1
a7e3df91f341abfe475645efc40d063debd2db1c

SHA256
4c6a2970ca755c70920dd56d628da42c2c9ac25394d405de0ffa766f4b3af575

SHA512
e7fe1f72ddc30413f47ade58e32a9aee8cb28b547a2f09618e833a1449a38f7dedc0d0a3e74e80da1144d32b078fe1c19a58e593df0d7e687f5eb5837bbfd318

Download Submit
memory/1148-7-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/1148-16-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/2680-0-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/2680-2-0x0000000000D10000-0x0000000000E10000-memory.dmp

Filesize
1024KB

Download
memory/2680-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2680-9-0x0000000000400000-0x0000000000C42000-memory.dmp

Filesize
8.3MB

Download
memory/3504-12-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/3504-14-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download
memory/3504-15-0x0000000000710000-0x0000000000725000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads