tofsee | d66356826e5ba8aab27a1ea1adf0178f9074a07d5f2f7c7d8092b870b108842a

Analysis

max time kernel
145s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 20:36

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General

Target

2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe
Size

12.4MB
MD5

cead6c18b15da4302277a2814979c996
SHA1

92d47bde1fa1074b3a2791ee3a20bb07decbe1b0
SHA256

d66356826e5ba8aab27a1ea1adf0178f9074a07d5f2f7c7d8092b870b108842a
SHA512

321641a60f333e7943948917bfc87cfa1e0dea53b422f0cfcbd3121ac8a7e4ee72ab83f3dbbd85726e6e9b5aef3258ba67f692a44c3758081b830c8dae828f3a
SSDEEP

393216:LXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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\yxmmsyhp = "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
2816	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\yxmmsyhp\ImagePath = "C:\\Windows\\SysWOW64\\yxmmsyhp\\pcolerwg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3036	pcolerwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3036 set thread context of 2804	3036	pcolerwg.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2792	sc.exe
2912	sc.exe
2752	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.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	pcolerwg.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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 2388	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	30
PID 1816 wrote to memory of 2388	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	30
PID 1816 wrote to memory of 2388	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	30
PID 1816 wrote to memory of 2388	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	30
PID 1816 wrote to memory of 2508	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	32
PID 1816 wrote to memory of 2508	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	32
PID 1816 wrote to memory of 2508	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	32
PID 1816 wrote to memory of 2508	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	32
PID 1816 wrote to memory of 2792	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	34
PID 1816 wrote to memory of 2792	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	34
PID 1816 wrote to memory of 2792	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	34
PID 1816 wrote to memory of 2792	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	34
PID 1816 wrote to memory of 2912	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	36
PID 1816 wrote to memory of 2912	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	36
PID 1816 wrote to memory of 2912	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	36
PID 1816 wrote to memory of 2912	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	36
PID 1816 wrote to memory of 2752	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	38
PID 1816 wrote to memory of 2752	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	38
PID 1816 wrote to memory of 2752	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	38
PID 1816 wrote to memory of 2752	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	38
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 3036 wrote to memory of 2804	3036	pcolerwg.exe	41
PID 1816 wrote to memory of 2816	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	42
PID 1816 wrote to memory of 2816	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	42
PID 1816 wrote to memory of 2816	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	42
PID 1816 wrote to memory of 2816	1816	2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yxmmsyhp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pcolerwg.exe" C:\Windows\SysWOW64\yxmmsyhp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yxmmsyhp binPath= "C:\Windows\SysWOW64\yxmmsyhp\pcolerwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yxmmsyhp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yxmmsyhp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2752
- 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:2816

C:\Windows\SysWOW64\yxmmsyhp\pcolerwg.exe
C:\Windows\SysWOW64\yxmmsyhp\pcolerwg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-18_cead6c18b15da4302277a2814979c996_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3036
- 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:2804

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
10.3MB

MD5
033718990673e6c1369f805c439b7e86

SHA1
898e59659918edf116febb7076f81cb16d63adc6

SHA256
24b6cf624253a8624f6e5b76aafb1dd1e1b28ab9f131924dce48cabdbe7596d7

SHA512
5eb65b758abd510a7bdc3c56947da8983d0449f39e56ec81a142c28448fc8d4372cbe3919be868de99b818ddf42877e5c7a96cec65aa971794abaec466ab92b0

Download Submit
memory/1816-16-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/1816-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1816-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1816-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1816-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/1816-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1816-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2804-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/3036-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads