tofsee | afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2

General

Target

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe
Size

11.7MB
MD5

41e5a3e35502d37dbc0bf74651a2ec6c
SHA1

f50ce2fc231fc554a1592af2ca6ac1a8c4918286
SHA256

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2
SHA512

0ff1255b91beb2c252a436fdc095cacb5a19c674037457743406024174e841d7285c0aa5abcfd47c7bd21999f313e13343e3675d3ecdbb8f9d760775befd9db9
SSDEEP

49152:Dyn7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7x7xd:DyB

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\mrojxuec = "0"	svchost.exe

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

2328 netsh.exe

pid	process
2328	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\mrojxuec\ImagePath = "C:\\Windows\\SysWOW64\\mrojxuec\\hugdwjoy.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

476 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hugdwjoy.exe

pid process

2708 hugdwjoy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hugdwjoy.exe

description pid process target process

PID 2708 set thread context of 476 2708 hugdwjoy.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3004 sc.exe
2764 sc.exe
2620 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
476	svchost.exe

pid	process
2708	hugdwjoy.exe

description	pid	process	target process
PID 2708 set thread context of 476	2708	hugdwjoy.exe	svchost.exe

pid	process
3004	sc.exe
2764	sc.exe
2620	sc.exe

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:

netsh.exesvchost.exeafac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.execmd.exesc.exesc.exehugdwjoy.execmd.exesc.exe

description	ioc	process
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	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.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	hugdwjoy.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 30 IoCs

Processes:

afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exehugdwjoy.exe

description	pid	process	target process
PID 2848 wrote to memory of 2732	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2732	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2732	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2732	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2856	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2856	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2856	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 2856	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	cmd.exe
PID 2848 wrote to memory of 3004	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 3004	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 3004	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 3004	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2764	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2764	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2764	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2764	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2620	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2620	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2620	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2620	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	sc.exe
PID 2848 wrote to memory of 2328	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2848 wrote to memory of 2328	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2848 wrote to memory of 2328	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2848 wrote to memory of 2328	2848	afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe	netsh.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe
PID 2708 wrote to memory of 476	2708	hugdwjoy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe
"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mrojxuec\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hugdwjoy.exe" C:\Windows\SysWOW64\mrojxuec\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mrojxuec binPath= "C:\Windows\SysWOW64\mrojxuec\hugdwjoy.exe /d\"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mrojxuec "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mrojxuec
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- 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:2328

C:\Windows\SysWOW64\mrojxuec\hugdwjoy.exe
C:\Windows\SysWOW64\mrojxuec\hugdwjoy.exe /d"C:\Users\Admin\AppData\Local\Temp\afac4eb9d79efcd0395d59351bdef0776b852ea337601cfbd9a79da3a1fad6b2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:476

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

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

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Downloads

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

Filesize
11.9MB

MD5
f607e3d9ca682c698279340f82b13252

SHA1
6e665b1b2182bdcd387fe2128c8535f58b531260

SHA256
e26f55e624b913a80d02b6eb7923fd0f9dfb7ac7b9d81c208d0d18338f51fe3b

SHA512
ebc1ffbdb249d96226c6b5a3e9214d1907ef4061a6f48a21865883710a433fc7dc40204777e8c25daa3d09296ba6d28d202e38499b6a84f477908c17bfeb929b

Download Submit
memory/476-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/476-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/476-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/476-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/476-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2708-17-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-1-0x0000000000270000-0x0000000000370000-memory.dmp

Filesize
1024KB

Download
memory/2848-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2848-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2848-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2848-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads