tofsee | f333a0be1d5c870dec819b2f818c6fb69c01a435e9fc54ce9102809fca9469b0

General

Target

c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe
Size

265KB
MD5

398239e317f655000598f69007041f16
SHA1

78e59ccc2a557308c64de915d1165149b1da2f1e
SHA256

c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411
SHA512

7e9868cf2508c749c1917e252fdf1bb6abb4e2d895765fe48612492cdfc6888098760e48a0a0eacbb784f092d1ceb7ecf3550ed69cd91267500cf8da4ae42667
SSDEEP

3072:YsNl37q7cp+RWJg986U7Ti5NVggjcGkNIVqIOM/h3sRH4KA:RH7q7cpauG8h7m7ITsqxLE

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

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
3708	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\ziyxzze\ImagePath = "C:\\Windows\\SysWOW64\\ziyxzze\\jfhmntoz.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe

Deletes itself 1 IoCs

pid	Process
1212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2040	jfhmntoz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 1212	2040	jfhmntoz.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1952	sc.exe
1252	sc.exe
3304	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
4500	2056	WerFault.exe	81
3916	2040	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.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	jfhmntoz.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 2056 wrote to memory of 2720	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	82
PID 2056 wrote to memory of 2720	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	82
PID 2056 wrote to memory of 2720	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	82
PID 2056 wrote to memory of 4364	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	84
PID 2056 wrote to memory of 4364	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	84
PID 2056 wrote to memory of 4364	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	84
PID 2056 wrote to memory of 1952	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	86
PID 2056 wrote to memory of 1952	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	86
PID 2056 wrote to memory of 1952	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	86
PID 2056 wrote to memory of 1252	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	88
PID 2056 wrote to memory of 1252	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	88
PID 2056 wrote to memory of 1252	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	88
PID 2056 wrote to memory of 3304	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	90
PID 2056 wrote to memory of 3304	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	90
PID 2056 wrote to memory of 3304	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	90
PID 2056 wrote to memory of 3708	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	93
PID 2056 wrote to memory of 3708	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	93
PID 2056 wrote to memory of 3708	2056	c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe	93
PID 2040 wrote to memory of 1212	2040	jfhmntoz.exe	98
PID 2040 wrote to memory of 1212	2040	jfhmntoz.exe	98
PID 2040 wrote to memory of 1212	2040	jfhmntoz.exe	98
PID 2040 wrote to memory of 1212	2040	jfhmntoz.exe	98
PID 2040 wrote to memory of 1212	2040	jfhmntoz.exe	98

C:\Users\Admin\AppData\Local\Temp\c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe
"C:\Users\Admin\AppData\Local\Temp\c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ziyxzze\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jfhmntoz.exe" C:\Windows\SysWOW64\ziyxzze\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ziyxzze binPath= "C:\Windows\SysWOW64\ziyxzze\jfhmntoz.exe /d\"C:\Users\Admin\AppData\Local\Temp\c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ziyxzze "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ziyxzze
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3304
- 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:3708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2056 -s 664
  2⤵
  - Program crash
  PID:4500

C:\Windows\SysWOW64\ziyxzze\jfhmntoz.exe
C:\Windows\SysWOW64\ziyxzze\jfhmntoz.exe /d"C:\Users\Admin\AppData\Local\Temp\c801719a85627afbece42c8eefba84f6d56957d0f17381b5d464234621aee411.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 540
  2⤵
  - Program crash
  PID:3916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2056 -ip 2056
1⤵
PID:3224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2040 -ip 2040
1⤵
PID:2080

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

Loading Replay Monitor...

Downloads

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

Filesize
12.4MB

MD5
ceac27307d74b2808e59442782198726

SHA1
ae73118de12648ca52fd9d48fa77fc8908e4cf6e

SHA256
5d665dd88593c6cdd0a8c4c527cddd4f6f71df9cefe37403596b1fa25061257d

SHA512
0d6ad0adf2cd075f6b27149bcecd4ad4b3ade8266b739db9e1bd568738fee18f95ddf2ac6ec8c66e7d4fdeb46a0531b3d328fbf26110b0a75e5811017477b7fb

Download Submit
memory/1212-10-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1212-12-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1212-13-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/2040-14-0x0000000000400000-0x000000000065B000-memory.dmp

Filesize
2.4MB

Download
memory/2056-0-0x0000000000820000-0x000000000082D000-memory.dmp

Filesize
52KB

Download
memory/2056-1-0x0000000000830000-0x0000000000843000-memory.dmp

Filesize
76KB

Download
memory/2056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2056-6-0x0000000000400000-0x000000000065B000-memory.dmp

Filesize
2.4MB

Download
memory/2056-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2056-8-0x0000000000830000-0x0000000000843000-memory.dmp

Filesize
76KB

Download
memory/2056-7-0x0000000000820000-0x000000000082D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads