tofsee | 0122c61b7744339ff20a0da34326fe959bbedb86067ff115497dea005ab05e77

Analysis

max time kernel
146s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 16:38

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General

Target

2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe
Size

12.9MB
MD5

94b08ae45d710b4d9c2971a2c313d6d0
SHA1

64ee86c9a7b1d8c8571f16742886ab61d3869a1c
SHA256

0122c61b7744339ff20a0da34326fe959bbedb86067ff115497dea005ab05e77
SHA512

46c2df829a2eed6e8e9740aded9f88cb90689a4f92626d7f6448531c6c69a1f5caa7caf7d3f33d13d58af027fe46affc9f6e2d2d190f6b362d73e191a3508706
SSDEEP

49152:XqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPO:XqtYc3/

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\btjabzfz = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2592	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\btjabzfz\ImagePath = "C:\\Windows\\SysWOW64\\btjabzfz\\rmqiyjlj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	rmqiyjlj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 2788	2800	rmqiyjlj.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2184	sc.exe
2696	sc.exe
2816	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rmqiyjlj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 2088	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	31
PID 320 wrote to memory of 2088	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	31
PID 320 wrote to memory of 2088	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	31
PID 320 wrote to memory of 2088	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	31
PID 320 wrote to memory of 2640	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	33
PID 320 wrote to memory of 2640	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	33
PID 320 wrote to memory of 2640	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	33
PID 320 wrote to memory of 2640	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	33
PID 320 wrote to memory of 2184	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	35
PID 320 wrote to memory of 2184	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	35
PID 320 wrote to memory of 2184	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	35
PID 320 wrote to memory of 2184	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	35
PID 320 wrote to memory of 2696	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	37
PID 320 wrote to memory of 2696	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	37
PID 320 wrote to memory of 2696	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	37
PID 320 wrote to memory of 2696	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	37
PID 320 wrote to memory of 2816	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	39
PID 320 wrote to memory of 2816	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	39
PID 320 wrote to memory of 2816	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	39
PID 320 wrote to memory of 2816	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	39
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 2800 wrote to memory of 2788	2800	rmqiyjlj.exe	42
PID 320 wrote to memory of 2592	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	43
PID 320 wrote to memory of 2592	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	43
PID 320 wrote to memory of 2592	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	43
PID 320 wrote to memory of 2592	320	2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\btjabzfz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rmqiyjlj.exe" C:\Windows\SysWOW64\btjabzfz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create btjabzfz binPath= "C:\Windows\SysWOW64\btjabzfz\rmqiyjlj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description btjabzfz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start btjabzfz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- 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:2592

C:\Windows\SysWOW64\btjabzfz\rmqiyjlj.exe
C:\Windows\SysWOW64\btjabzfz\rmqiyjlj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-31_94b08ae45d710b4d9c2971a2c313d6d0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2800
- 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:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.1MB

MD5
20a671c03662511935387bb74be8153b

SHA1
55f63ef86a4b4af0d35ca0d35ee78af85f4866d1

SHA256
b55246338bcdc1bebe0eeb46362d3cd71d843dff533e21ded99653e0cdd0ca7c

SHA512
31c6683296a3aaf4863a893f8d57f3dbd5e1742ced1d11cd72c92969cda60e1e47e5ba117037c1c86c5a589bec74acf74331a700bcbf219751a5b7e125e0cfd3

Download Submit
memory/320-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/320-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/320-1-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/320-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/320-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/320-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2788-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2788-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2800-12-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads