tofsee | ef0cf9c3a7416b9a5547706530960398aa2bc67a2800813458a34680567efe03

Analysis

max time kernel
147s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-11-2024 19:02

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General

Target

2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe
Size

10.0MB
MD5

935e2c30c169112205d10b25c338cbc1
SHA1

a0cd4f34ed0dbb5d4eb4758f65fab7ae1a0e2ebe
SHA256

ef0cf9c3a7416b9a5547706530960398aa2bc67a2800813458a34680567efe03
SHA512

dc6787fc71daa25628ebb4c956fb4ab90dc9a83d31a1ff8b1526b8300803fbb7852c59383acb5050ce346299b0dbc9719f706fe588f8d62aef811e4bae94eb30
SSDEEP

49152:QVdrl/8HAzGCbGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGu:QVdrl/9zG

Score

10^/10

tofsee discovery evasion 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

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\pirljgxe = "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

pid	Process
2772	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\pirljgxe\ImagePath = "C:\\Windows\\SysWOW64\\pirljgxe\\sxkknmch.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	sxkknmch.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2716 set thread context of 2756	2716	sxkknmch.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2664	sc.exe
2312	sc.exe
2080	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sxkknmch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 1548	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	30
PID 2600 wrote to memory of 1548	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	30
PID 2600 wrote to memory of 1548	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	30
PID 2600 wrote to memory of 1548	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	30
PID 2600 wrote to memory of 2300	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	32
PID 2600 wrote to memory of 2300	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	32
PID 2600 wrote to memory of 2300	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	32
PID 2600 wrote to memory of 2300	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	32
PID 2600 wrote to memory of 2312	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	34
PID 2600 wrote to memory of 2312	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	34
PID 2600 wrote to memory of 2312	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	34
PID 2600 wrote to memory of 2312	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	34
PID 2600 wrote to memory of 2080	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	36
PID 2600 wrote to memory of 2080	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	36
PID 2600 wrote to memory of 2080	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	36
PID 2600 wrote to memory of 2080	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	36
PID 2600 wrote to memory of 2664	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	38
PID 2600 wrote to memory of 2664	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	38
PID 2600 wrote to memory of 2664	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	38
PID 2600 wrote to memory of 2664	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	38
PID 2600 wrote to memory of 2772	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	41
PID 2600 wrote to memory of 2772	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	41
PID 2600 wrote to memory of 2772	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	41
PID 2600 wrote to memory of 2772	2600	2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe	41
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43
PID 2716 wrote to memory of 2756	2716	sxkknmch.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pirljgxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxkknmch.exe" C:\Windows\SysWOW64\pirljgxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pirljgxe binPath= "C:\Windows\SysWOW64\pirljgxe\sxkknmch.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pirljgxe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pirljgxe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- 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:2772

C:\Windows\SysWOW64\pirljgxe\sxkknmch.exe
C:\Windows\SysWOW64\pirljgxe\sxkknmch.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-06_935e2c30c169112205d10b25c338cbc1_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- 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:2756

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\sxkknmch.exe

Filesize
12.8MB

MD5
b308e3169b4761185d628bb8e41392c4

SHA1
4db8736cef4cd3d6d3ed1a92179e5b97e6e997b2

SHA256
242eb852fca41048cb6e5ed9f27f878bf7db89debd4d397c9b4efbbbb868b50c

SHA512
d46827e6b64174471d947872fb103c6035f660093b8e85d32bfe9c005a6436cc13c0744c9b5d002b88bbb26339b6a5847066d91c606b7dba54460350b4b0d943

Download Submit
memory/2600-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/2600-3-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/2600-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2600-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2600-8-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/2716-15-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/2756-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2756-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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