tofsee | 189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232

Analysis

max time kernel
146s
max time network
123s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
14-11-2023 19:02

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General

Target

189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe
Size

11.7MB
MD5

0b9eaf5502101f33252e46846f4db5a5
SHA1

620b46abbe9d9e3884d28d85fe7b949c17538eda
SHA256

189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232
SHA512

23fda346f08da77d3158d0a9c464a382af17c9a5649ed4b89152dec01d2527ec0cb9f6d43d5b8decf7ebcf0d65e0906f69a2443e72605c4eb7f549a004ce378c
SSDEEP

3072:x8NYa2qJjULtTNupQyEC6pxhhfm5OcVi:xsRItTNKr2f45

Score

10^/10

tofsee evasion persistence 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

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\btlvfany = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
2612	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\btlvfany\ImagePath = "C:\\Windows\\SysWOW64\\btlvfany\\zpvopxnw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2532	zpvopxnw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 2660	2532	zpvopxnw.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2116	sc.exe
2732	sc.exe
2672	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2928	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	28
PID 2876 wrote to memory of 2928	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	28
PID 2876 wrote to memory of 2928	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	28
PID 2876 wrote to memory of 2928	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	28
PID 2876 wrote to memory of 2952	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	30
PID 2876 wrote to memory of 2952	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	30
PID 2876 wrote to memory of 2952	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	30
PID 2876 wrote to memory of 2952	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	30
PID 2876 wrote to memory of 2116	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	32
PID 2876 wrote to memory of 2116	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	32
PID 2876 wrote to memory of 2116	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	32
PID 2876 wrote to memory of 2116	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	32
PID 2876 wrote to memory of 2732	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	34
PID 2876 wrote to memory of 2732	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	34
PID 2876 wrote to memory of 2732	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	34
PID 2876 wrote to memory of 2732	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	34
PID 2876 wrote to memory of 2672	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	36
PID 2876 wrote to memory of 2672	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	36
PID 2876 wrote to memory of 2672	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	36
PID 2876 wrote to memory of 2672	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	36
PID 2876 wrote to memory of 2612	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	38
PID 2876 wrote to memory of 2612	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	38
PID 2876 wrote to memory of 2612	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	38
PID 2876 wrote to memory of 2612	2876	189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe	38
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41
PID 2532 wrote to memory of 2660	2532	zpvopxnw.exe	41

C:\Users\Admin\AppData\Local\Temp\189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe
"C:\Users\Admin\AppData\Local\Temp\189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\btlvfany\
  2⤵
  PID:2928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zpvopxnw.exe" C:\Windows\SysWOW64\btlvfany\
  2⤵
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create btlvfany binPath= "C:\Windows\SysWOW64\btlvfany\zpvopxnw.exe /d\"C:\Users\Admin\AppData\Local\Temp\189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description btlvfany "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start btlvfany
  2⤵
  - Launches sc.exe
  PID:2672
- 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
  PID:2612

C:\Windows\SysWOW64\btlvfany\zpvopxnw.exe
C:\Windows\SysWOW64\btlvfany\zpvopxnw.exe /d"C:\Users\Admin\AppData\Local\Temp\189c5efc65e3b28e3536ffb8616766b36115b058ceb6548c87bb3e4d3a5e0232.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\zpvopxnw.exe

Filesize
10.8MB

MD5
99883f479cb7ba2b7c19d7651ac01070

SHA1
1b8b5346dab5d12d3e342a742cebec6ea016688f

SHA256
e1647eba7b34bf8c31a7901293e17d1bb4846f38443587280fb810ffa4055950

SHA512
99554c07675293901d75ff388fb6d6b44bb0e0c0b1af9a1c8f1e20f89e5edbd9595e69ae04c33da727575f818fae049f0edcf82da911cf8ba820f1f2a0b4e6d9

Download Submit
C:\Windows\SysWOW64\btlvfany\zpvopxnw.exe

Filesize
10.8MB

MD5
99883f479cb7ba2b7c19d7651ac01070

SHA1
1b8b5346dab5d12d3e342a742cebec6ea016688f

SHA256
e1647eba7b34bf8c31a7901293e17d1bb4846f38443587280fb810ffa4055950

SHA512
99554c07675293901d75ff388fb6d6b44bb0e0c0b1af9a1c8f1e20f89e5edbd9595e69ae04c33da727575f818fae049f0edcf82da911cf8ba820f1f2a0b4e6d9

Download Submit
memory/2532-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2532-8-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2532-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2660-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2660-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2660-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2876-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2876-0-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2876-2-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/2876-1-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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