tofsee | 96dc271c4e954a7e65146eaef6435c6bb4c868f612bf46880bf583128740de34

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/02/2025, 08:42

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General

Target

2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe
Size

10.3MB
MD5

0db501e7b298021edd67675de8df86c6
SHA1

53469a8b6976a59d14b07348105a9a6271f71d96
SHA256

96dc271c4e954a7e65146eaef6435c6bb4c868f612bf46880bf583128740de34
SHA512

d84c6298db4ee534be0941d69632b1644c74fac2ff73f00858d297d9c1969107d8192bed04e6eac96c4a9e37617ccae927bd16cf740cea2719e7e66f11826418
SSDEEP

24576:UEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZr:xfotp

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\qfxfggzj = "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
2360	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\qfxfggzj\ImagePath = "C:\\Windows\\SysWOW64\\qfxfggzj\\pcolerwg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2592	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	pcolerwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 2592	2820	pcolerwg.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2956	sc.exe
2804	sc.exe
2108	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pcolerwg.exe
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	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe
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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2700	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	31
PID 2672 wrote to memory of 2700	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	31
PID 2672 wrote to memory of 2700	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	31
PID 2672 wrote to memory of 2700	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	31
PID 2672 wrote to memory of 1736	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	33
PID 2672 wrote to memory of 1736	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	33
PID 2672 wrote to memory of 1736	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	33
PID 2672 wrote to memory of 1736	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	33
PID 2672 wrote to memory of 2956	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	35
PID 2672 wrote to memory of 2956	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	35
PID 2672 wrote to memory of 2956	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	35
PID 2672 wrote to memory of 2956	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	35
PID 2672 wrote to memory of 2804	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	37
PID 2672 wrote to memory of 2804	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	37
PID 2672 wrote to memory of 2804	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	37
PID 2672 wrote to memory of 2804	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	37
PID 2672 wrote to memory of 2108	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	39
PID 2672 wrote to memory of 2108	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	39
PID 2672 wrote to memory of 2108	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	39
PID 2672 wrote to memory of 2108	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	39
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2820 wrote to memory of 2592	2820	pcolerwg.exe	42
PID 2672 wrote to memory of 2360	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	43
PID 2672 wrote to memory of 2360	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	43
PID 2672 wrote to memory of 2360	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	43
PID 2672 wrote to memory of 2360	2672	2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qfxfggzj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pcolerwg.exe" C:\Windows\SysWOW64\qfxfggzj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qfxfggzj binPath= "C:\Windows\SysWOW64\qfxfggzj\pcolerwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qfxfggzj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qfxfggzj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- 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:2360

C:\Windows\SysWOW64\qfxfggzj\pcolerwg.exe
C:\Windows\SysWOW64\qfxfggzj\pcolerwg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-04_0db501e7b298021edd67675de8df86c6_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2592

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\pcolerwg.exe

Filesize
10.4MB

MD5
85a02b53b0868ed71c6ae515e9a6fb35

SHA1
927541856eaca50bade2a8fa722f420970323d14

SHA256
9e184090c2c55273c9802cdb682859a559e9f5ed5bde5265c8d02db40c8b471e

SHA512
eec9f77e4efa36d393160e9304018eed6e23ff732ae62b1d7bc4d0a6c770a635f177b0088b454eefc88a22051f0c8dc70d5002b41ae0d95ad31deccdbf15acc7

Download Submit
memory/2592-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2592-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2592-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2592-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2592-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2672-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2672-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2820-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads