tofsee | ef6f1716a8bffd4589a69bf4d7dcc128a97e4edbd3fcccb82dd6cedf904cb684

Analysis

max time kernel
145s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-02-2025 20:28

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General

Target

2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe
Size

11.1MB
MD5

c5039cc69854774bc6317767ae21afd0
SHA1

7c8ded333ff85b277cdbc241485b00a67ab2dd67
SHA256

ef6f1716a8bffd4589a69bf4d7dcc128a97e4edbd3fcccb82dd6cedf904cb684
SHA512

7535c86a1ef5acfdb500ce5ce18dbbf897969557e1221cf2df22dd454513cffea2ecf333ffd2b3f7e57aa702a37f19ef2332a68a4dd7535572003b585a5466b6
SSDEEP

49152:WqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:WqtYc3

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\kkiyyjbg = "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
2072	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\kkiyyjbg\ImagePath = "C:\\Windows\\SysWOW64\\kkiyyjbg\\nwqvnmhd.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2540	nwqvnmhd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2540 set thread context of 2624	2540	nwqvnmhd.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2708	sc.exe
3032	sc.exe
1048	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.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	nwqvnmhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2812	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	30
PID 2228 wrote to memory of 2812	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	30
PID 2228 wrote to memory of 2812	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	30
PID 2228 wrote to memory of 2812	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	30
PID 2228 wrote to memory of 2652	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	32
PID 2228 wrote to memory of 2652	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	32
PID 2228 wrote to memory of 2652	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	32
PID 2228 wrote to memory of 2652	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	32
PID 2228 wrote to memory of 2708	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	34
PID 2228 wrote to memory of 2708	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	34
PID 2228 wrote to memory of 2708	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	34
PID 2228 wrote to memory of 2708	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	34
PID 2228 wrote to memory of 3032	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	36
PID 2228 wrote to memory of 3032	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	36
PID 2228 wrote to memory of 3032	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	36
PID 2228 wrote to memory of 3032	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	36
PID 2228 wrote to memory of 1048	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	38
PID 2228 wrote to memory of 1048	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	38
PID 2228 wrote to memory of 1048	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	38
PID 2228 wrote to memory of 1048	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	38
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2540 wrote to memory of 2624	2540	nwqvnmhd.exe	41
PID 2228 wrote to memory of 2072	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	42
PID 2228 wrote to memory of 2072	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	42
PID 2228 wrote to memory of 2072	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	42
PID 2228 wrote to memory of 2072	2228	2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kkiyyjbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nwqvnmhd.exe" C:\Windows\SysWOW64\kkiyyjbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kkiyyjbg binPath= "C:\Windows\SysWOW64\kkiyyjbg\nwqvnmhd.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kkiyyjbg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kkiyyjbg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1048
- 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:2072

C:\Windows\SysWOW64\kkiyyjbg\nwqvnmhd.exe
C:\Windows\SysWOW64\kkiyyjbg\nwqvnmhd.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_c5039cc69854774bc6317767ae21afd0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- 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:2624

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\nwqvnmhd.exe

Filesize
11.5MB

MD5
f1750aa78c4789f32d2625a84d2e03ac

SHA1
8d32679daae808536efc0481da19ccde3fc7e99e

SHA256
ac89c8baa443fe6395757f6c0f21fbfdb8b9e2d7855ec4195be8630e93c2a094

SHA512
1347fd032c87c34ec2329a4436d13802845e24c93ea19143eb634ad3c3f38130ba352164600e2e89fa39d6fa38c89c3ebb887315e812da1102775c5648992c5a

Download Submit
memory/2228-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-14-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2228-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2228-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2540-12-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2624-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2624-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2624-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads