tofsee | 9771659122d068ceb3bcb1965b659b1d16c9f3afd290e058d5feddb667a475ae

General

Target

9b90e99043652fd044759bd26e1a6ef0N.exe
Size

71KB
MD5

9b90e99043652fd044759bd26e1a6ef0
SHA1

0b2b1752d9b3efb0778cb5f432b8df0f2d24fec9
SHA256

9771659122d068ceb3bcb1965b659b1d16c9f3afd290e058d5feddb667a475ae
SHA512

d2f7ecc6ebf815ec92a7541d615c51f8127ee62671065e27ac62dd96859ce8e08ebd9f397eb993e3565623253b9e16f09e47be6c07a9b02b40f8594cee554e44
SSDEEP

1536:6kss21VCb7jTxSYgOuzTjFWL9bSpIrUc:61VCbrxSYFuzFFpIo

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

Processes:

netsh.exe

pid	Process
2188	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fgbgdkev\ImagePath = "C:\\Windows\\SysWOW64\\fgbgdkev\\pueztfce.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

Processes:

9b90e99043652fd044759bd26e1a6ef0N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	9b90e99043652fd044759bd26e1a6ef0N.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4832	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

pueztfce.exe

pid	Process
1716	pueztfce.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

pueztfce.exe

description	pid	Process	procid_target
PID 1716 set thread context of 4832	1716	pueztfce.exe	102

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2032	sc.exe
4500	sc.exe
4816	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

Processes:

netsh.exe

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

Processes:

sc.exesc.exepueztfce.exe9b90e99043652fd044759bd26e1a6ef0N.execmd.exenetsh.exesvchost.execmd.exesc.exe

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	pueztfce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9b90e99043652fd044759bd26e1a6ef0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9b90e99043652fd044759bd26e1a6ef0N.exepueztfce.exe

description	pid	Process	procid_target
PID 1644 wrote to memory of 2504	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	84
PID 1644 wrote to memory of 2504	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	84
PID 1644 wrote to memory of 2504	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	84
PID 1644 wrote to memory of 1832	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	88
PID 1644 wrote to memory of 1832	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	88
PID 1644 wrote to memory of 1832	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	88
PID 1644 wrote to memory of 4816	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	92
PID 1644 wrote to memory of 4816	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	92
PID 1644 wrote to memory of 4816	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	92
PID 1644 wrote to memory of 2032	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	94
PID 1644 wrote to memory of 2032	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	94
PID 1644 wrote to memory of 2032	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	94
PID 1644 wrote to memory of 4500	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	98
PID 1644 wrote to memory of 4500	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	98
PID 1644 wrote to memory of 4500	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	98
PID 1716 wrote to memory of 4832	1716	pueztfce.exe	102
PID 1716 wrote to memory of 4832	1716	pueztfce.exe	102
PID 1716 wrote to memory of 4832	1716	pueztfce.exe	102
PID 1716 wrote to memory of 4832	1716	pueztfce.exe	102
PID 1716 wrote to memory of 4832	1716	pueztfce.exe	102
PID 1644 wrote to memory of 2188	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	103
PID 1644 wrote to memory of 2188	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	103
PID 1644 wrote to memory of 2188	1644	9b90e99043652fd044759bd26e1a6ef0N.exe	103

C:\Users\Admin\AppData\Local\Temp\9b90e99043652fd044759bd26e1a6ef0N.exe
"C:\Users\Admin\AppData\Local\Temp\9b90e99043652fd044759bd26e1a6ef0N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fgbgdkev\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pueztfce.exe" C:\Windows\SysWOW64\fgbgdkev\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fgbgdkev binPath= "C:\Windows\SysWOW64\fgbgdkev\pueztfce.exe /d\"C:\Users\Admin\AppData\Local\Temp\9b90e99043652fd044759bd26e1a6ef0N.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fgbgdkev "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fgbgdkev
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4500
- 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:2188

C:\Windows\SysWOW64\fgbgdkev\pueztfce.exe
C:\Windows\SysWOW64\fgbgdkev\pueztfce.exe /d"C:\Users\Admin\AppData\Local\Temp\9b90e99043652fd044759bd26e1a6ef0N.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4832

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\pueztfce.exe

Filesize
11.6MB

MD5
ef2186300271607a924175d6b00261a9

SHA1
2f382e6528e3b4d08df73d5521a4f803cd5022df

SHA256
d5c49819c71c67e7fcd1ba18e5f67f84e81cacd98d8da5a1f2534fd0466c039b

SHA512
aa9f1560ab861a237c64aaca2322d6fa5bc16b312884b4be770eaab40d791ea2513a3df6c39c64e9f7dcc6b1f4f2bd26e2d675e9cf65b04bde42d725490fb95d

Download Submit
memory/4832-3-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4832-6-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4832-7-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4832-8-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download
memory/4832-9-0x0000000000ED0000-0x0000000000EE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads