tofsee | 8ef97516f5ec3db0157fd16d7c796da6431f8866b570f1e0772c5fb528b00722

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 01:03

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General

Target

2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe
Size

12.8MB
MD5

842adcbd949a60af182d959ae963092f
SHA1

629699f75e2bf5107b6cba3fc93a9a2e9862cb66
SHA256

8ef97516f5ec3db0157fd16d7c796da6431f8866b570f1e0772c5fb528b00722
SHA512

be6707d80b2e66670c9653bd8ef0a647d5e89720c3e9411a4ef54b0c9cd4bc5c6f0bb5211d9aaef56f00f4a0dfa429ade95efa600f3d43910e9d11c6df84e83b
SSDEEP

24576:S6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQf:bWdLQk

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\ckrmxgvp = "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
2800	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\ckrmxgvp\ImagePath = "C:\\Windows\\SysWOW64\\ckrmxgvp\\kwvjuemg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2928	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	kwvjuemg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2928	2812	kwvjuemg.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2852	sc.exe
2748	sc.exe
3060	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	svchost.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kwvjuemg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 1048	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	30
PID 2128 wrote to memory of 1048	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	30
PID 2128 wrote to memory of 1048	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	30
PID 2128 wrote to memory of 1048	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	30
PID 2128 wrote to memory of 2320	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	32
PID 2128 wrote to memory of 2320	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	32
PID 2128 wrote to memory of 2320	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	32
PID 2128 wrote to memory of 2320	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	32
PID 2128 wrote to memory of 2852	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	34
PID 2128 wrote to memory of 2852	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	34
PID 2128 wrote to memory of 2852	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	34
PID 2128 wrote to memory of 2852	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	34
PID 2128 wrote to memory of 2748	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	36
PID 2128 wrote to memory of 2748	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	36
PID 2128 wrote to memory of 2748	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	36
PID 2128 wrote to memory of 2748	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	36
PID 2128 wrote to memory of 3060	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	38
PID 2128 wrote to memory of 3060	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	38
PID 2128 wrote to memory of 3060	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	38
PID 2128 wrote to memory of 3060	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	38
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2812 wrote to memory of 2928	2812	kwvjuemg.exe	41
PID 2128 wrote to memory of 2800	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	42
PID 2128 wrote to memory of 2800	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	42
PID 2128 wrote to memory of 2800	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	42
PID 2128 wrote to memory of 2800	2128	2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ckrmxgvp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwvjuemg.exe" C:\Windows\SysWOW64\ckrmxgvp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ckrmxgvp binPath= "C:\Windows\SysWOW64\ckrmxgvp\kwvjuemg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ckrmxgvp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ckrmxgvp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- 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:2800

C:\Windows\SysWOW64\ckrmxgvp\kwvjuemg.exe
C:\Windows\SysWOW64\ckrmxgvp\kwvjuemg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_842adcbd949a60af182d959ae963092f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2928

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\kwvjuemg.exe

Filesize
10.7MB

MD5
ed771c84f0108c52e8fd4f3468d08315

SHA1
ce11768cba2d1efef9cb17afcd984e7d9cae980b

SHA256
535aa79400435c0e6c015c9f1ad5b92c969970d6b401284435e1e719dc2fd347

SHA512
cfee478030c8662e3b14646a80d4d494b25917d22bcf7ddfd395a17ef4a63478c593b9c4085c76eaf8d500bcabcb696b01f864896e3df906184c1a12b5580ace

Download Submit
memory/2128-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2128-14-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2128-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2128-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2812-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2928-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2928-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2928-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2928-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2928-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads