tofsee | 2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 00:02

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General

Target

2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe
Size

179KB
MD5

34e79a57341c6f1742e6c342faa1aef0
SHA1

57949ba2e6f262fe075f2dd5846c4a5f3b3da8aa
SHA256

2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01
SHA512

36f8b826da188d4265b2a68a8a8053b74e18ae96ec12ecda19be3e19a9fa7558a201370f8a556dba9df4ea371a21f6c9848f7882486c55b74fbc8665f71ac1cd
SSDEEP

3072:npTvjrvSCFMGIZqYSVU2cxi2b8YSispChVn/30LvgHPDRuVlSTPW3N30:nJ3v1FzIZqYyU2+EYokhVn/kz2PDEVQ

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan upx

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\ttzozzrp = "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
2836	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\ttzozzrp\ImagePath = "C:\\Windows\\SysWOW64\\ttzozzrp\\zhwanluu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	zhwanluu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 2744	2280	zhwanluu.exe	43

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1816-1-0x0000000000400000-0x0000000004C4C000-memory.dmp	upx
behavioral1/files/0x000c000000012277-5.dat	upx

Launches sc.exe 3 IoCs

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

pid	Process
2460	sc.exe
3028	sc.exe
1476	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.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	zhwanluu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 2220	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	30
PID 1816 wrote to memory of 2220	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	30
PID 1816 wrote to memory of 2220	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	30
PID 1816 wrote to memory of 2220	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	30
PID 1816 wrote to memory of 2516	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	32
PID 1816 wrote to memory of 2516	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	32
PID 1816 wrote to memory of 2516	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	32
PID 1816 wrote to memory of 2516	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	32
PID 1816 wrote to memory of 2460	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	34
PID 1816 wrote to memory of 2460	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	34
PID 1816 wrote to memory of 2460	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	34
PID 1816 wrote to memory of 2460	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	34
PID 1816 wrote to memory of 3028	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	36
PID 1816 wrote to memory of 3028	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	36
PID 1816 wrote to memory of 3028	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	36
PID 1816 wrote to memory of 3028	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	36
PID 1816 wrote to memory of 1476	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	38
PID 1816 wrote to memory of 1476	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	38
PID 1816 wrote to memory of 1476	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	38
PID 1816 wrote to memory of 1476	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	38
PID 1816 wrote to memory of 2836	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	41
PID 1816 wrote to memory of 2836	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	41
PID 1816 wrote to memory of 2836	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	41
PID 1816 wrote to memory of 2836	1816	2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe	41
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43
PID 2280 wrote to memory of 2744	2280	zhwanluu.exe	43

C:\Users\Admin\AppData\Local\Temp\2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe
"C:\Users\Admin\AppData\Local\Temp\2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.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\ttzozzrp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zhwanluu.exe" C:\Windows\SysWOW64\ttzozzrp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ttzozzrp binPath= "C:\Windows\SysWOW64\ttzozzrp\zhwanluu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ttzozzrp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ttzozzrp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1476
- 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:2836

C:\Windows\SysWOW64\ttzozzrp\zhwanluu.exe
C:\Windows\SysWOW64\ttzozzrp\zhwanluu.exe /d"C:\Users\Admin\AppData\Local\Temp\2563e3d6d4c2a649c74dc12e6f361723e9ccb6ff5405928db9279311be996e01N.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- 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:2744

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\zhwanluu.exe

Filesize
14.4MB

MD5
353679ece6f6233e5126f5c664a999ac

SHA1
ab9035b4580fd284ed28c5e766f43fa731071600

SHA256
c7a273429c0013d37c13d1e17fda4f1e29d859eab3393268059d50f021db7692

SHA512
2dfde31faed9e060df84212475f6482c1e293d049c0d7f577196f793a311a0ae81c3cb7a92444a1c7061a599dcb7228a431ec820343461aa0c2087a57bb9cff4

Download Submit
memory/1816-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

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

Filesize
84KB

Download
memory/1816-4-0x0000000000400000-0x0000000004C4C000-memory.dmp

Filesize
72.3MB

Download
memory/1816-2-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/1816-7-0x0000000000400000-0x0000000004C4C000-memory.dmp

Filesize
72.3MB

Download
memory/1816-1-0x0000000000400000-0x0000000004C4C000-memory.dmp

Filesize
72.3MB

Download
memory/2280-13-0x0000000000400000-0x0000000004C4C000-memory.dmp

Filesize
72.3MB

Download
memory/2744-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2744-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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