tofsee | 0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05/01/2025, 20:00

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General

Target

0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe
Size

12.1MB
MD5

303f6e51c43fac701d5f42ef5bf75390
SHA1

8579db92117e98aab6ea6c8386044b9dac29f751
SHA256

0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad
SHA512

0ef6f8304325be021264f08f7458dc7ef01c65ab8ee9b64455a27af47bbff9177648e5b6c4c2bb1d29e42205ff20987836ec32ffd23f5fd4c22bd4570e57689d
SSDEEP

6144:vZDhTWrhgUaxjFftGu35QZ+2PPFGrGuislc03r:vZDhTWrhgUWFfMuP0FGqb/0

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\ycjpqzcs = "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
3004	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\ycjpqzcs\ImagePath = "C:\\Windows\\SysWOW64\\ycjpqzcs\\nhqanqvh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2304	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2972	nhqanqvh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2972 set thread context of 2304	2972	nhqanqvh.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2252	sc.exe
2768	sc.exe
2816	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.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	nhqanqvh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2248	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	30
PID 1600 wrote to memory of 2248	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	30
PID 1600 wrote to memory of 2248	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	30
PID 1600 wrote to memory of 2248	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	30
PID 1600 wrote to memory of 684	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	32
PID 1600 wrote to memory of 684	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	32
PID 1600 wrote to memory of 684	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	32
PID 1600 wrote to memory of 684	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	32
PID 1600 wrote to memory of 2252	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	34
PID 1600 wrote to memory of 2252	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	34
PID 1600 wrote to memory of 2252	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	34
PID 1600 wrote to memory of 2252	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	34
PID 1600 wrote to memory of 2768	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	36
PID 1600 wrote to memory of 2768	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	36
PID 1600 wrote to memory of 2768	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	36
PID 1600 wrote to memory of 2768	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	36
PID 1600 wrote to memory of 2816	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	38
PID 1600 wrote to memory of 2816	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	38
PID 1600 wrote to memory of 2816	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	38
PID 1600 wrote to memory of 2816	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	38
PID 1600 wrote to memory of 3004	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	41
PID 1600 wrote to memory of 3004	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	41
PID 1600 wrote to memory of 3004	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	41
PID 1600 wrote to memory of 3004	1600	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	41
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43
PID 2972 wrote to memory of 2304	2972	nhqanqvh.exe	43

C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe
"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ycjpqzcs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhqanqvh.exe" C:\Windows\SysWOW64\ycjpqzcs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ycjpqzcs binPath= "C:\Windows\SysWOW64\ycjpqzcs\nhqanqvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ycjpqzcs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ycjpqzcs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2816
- 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:3004

C:\Windows\SysWOW64\ycjpqzcs\nhqanqvh.exe
C:\Windows\SysWOW64\ycjpqzcs\nhqanqvh.exe /d"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2972
- 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:2304

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\nhqanqvh.exe

Filesize
13.1MB

MD5
4cb2b9a94ef4c8bf8ef6f73b1594d644

SHA1
fc8f492122ba1e57388a0bffd5e0b4c5124f41f5

SHA256
7f7cf8b08d9ccc31e5e6c7a6b456086a59eb19d206d1019e57889489823171b3

SHA512
8ba8f0188b30d61c07d05d984a5d237df8aeb8b73930da92b2c182435bfda5b211dc084b5cad18fc1312f15b0974a182265cf94ec1d861f953c794014b016897

Download Submit
memory/1600-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1600-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1600-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1600-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1600-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1600-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/2304-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2304-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2304-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-15-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads