tofsee | 5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b

General

Target
5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe
Size 12.8MB
Sample261110-3a2nracc74
SHA256 5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b
MD5 a4d5d0b3373a50c40f4ceabbf02f7440
SHA1 54c8f7916c025c01a3fa6f56e89b910c48807f81
SHA512 a5296fa52ab56beae71a8319de43d295de872534ec2128b1ac4bd01064aa70fdfbc5663a9142443c30e4ec1de027613e9101e93f783e309239fd84c1aaa3f89f
SSDEEP 49152:Mlp+5rvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvn:MW
TLSH
T11CD6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution tofsee persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru
refabyd.info

Signatures

Family: Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3544	netsh.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Executes dropped EXE 1 IoCs

pid	Process
4976	jhrppfoe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4976 set thread context of 2812	4976	jhrppfoe.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1124	sc.exe
5396	sc.exe
4100	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

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4888	cmd.exe
4852	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jhrppfoe.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5788 wrote to memory of 4888	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	89
PID 5788 wrote to memory of 4852	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	91
PID 5788 wrote to memory of 1124	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	93
PID 5788 wrote to memory of 5396	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	95
PID 5788 wrote to memory of 4100	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	97
PID 4976 wrote to memory of 2812	4976	jhrppfoe.exe	101
PID 4976 wrote to memory of 2812	4976	jhrppfoe.exe	101
PID 5788 wrote to memory of 3544	5788	5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe	102

C:\Users\Admin\AppData\Local\Temp\5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe
"C:\Users\Admin\AppData\Local\Temp\5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ybxthdrs\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4888
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jhrppfoe.exe" C:\Windows\SysWOW64\ybxthdrs\
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:4852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ybxthdrs binPath= "C:\Windows\SysWOW64\ybxthdrs\jhrppfoe.exe /d\"C:\Users\Admin\AppData\Local\Temp\5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ybxthdrs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ybxthdrs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4100
- 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:3544

C:\Windows\SysWOW64\ybxthdrs\jhrppfoe.exe
C:\Windows\SysWOW64\ybxthdrs\jhrppfoe.exe /d"C:\Users\Admin\AppData\Local\Temp\5354899b7255cc88625bd5f738240ae03e322b0b8a6342c28bf108e9f9dd132b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:2812

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

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

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

1

T1562.004

Credential Access

Discovery

System Information Discovery

1

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

jhrppfoe.exe

Path C:\Users\Admin\AppData\Local\Temp\jhrppfoe.exe
Size 14.9MB
SHA256 68be90e7f594f7c193140af923461b20baec96c74653d85255d88c2b54e15bf8
MD5 e7e82975a1f9bcfabc85ec95d35f981e
SHA1 a63f488822a42614d66e2ac263d7d5bca6d13728
SHA512 a5a48083f2917ae350a5a08543192ba66525be005f228c504fa5edbfca9c1952611ec733c7713c80845599f00dc6f40beb365867c4d15db88d486fade17ecff9
SSDEEP 49152:Tlp+5rvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvrvH:TW
TLSH
T1F6F6436676D86ED9D0CA0FBC09A1C42B5DECFB34043A553096D1504F98AE78A973CBB3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2812-6-0x00000000008C0000-0x0000000000909000-memory.dmp

Download

memory/4976-5-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/4976-9-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/5788-0-0x0000000000400000-0x0000000000449000-memory.dmp

Download

memory/5788-10-0x0000000000400000-0x0000000000449000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads