a7ea7c47ab2d05a476b33af71de0eca05de06503956c49345ce0339c91f6dc47

Analysis

max time kernel
1800s
max time network
1496s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
20/05/2024, 14:54

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General

Target

Worm.Win32_Vobfus.AC.exe
Size

53KB
MD5

3d314beead79c0ed05dc7d3ffc399b36
SHA1

a75813a0cf5f380cb87f5bdd230502a6b53157fe
SHA256

793f93bed1d221e899cdeacc07ccd466c4ed5807835ef646006fe19e16685f18
SHA512

900091fd38d0f2960e17a7667f995c9a034208b5a07d4664472f63af6e8b9557925dfbbe07312de7a703d08528a03a67fa4e4690cd927f377aae80a3fe5aaf92
SSDEEP

1536:vNZg8r8QJYYS7Kp3StjEMjmLM3ztDJWZsXy4JzxPME:9YYSJJjmLM3zRJWZsXy4Jt

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	weuiyop.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	weuiyop.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\weuiyop = "C:\\Users\\Admin\\weuiyop.exe"	weuiyop.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe
4008	weuiyop.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1176	Worm.Win32_Vobfus.AC.exe
4008	weuiyop.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1176 wrote to memory of 4008	1176	Worm.Win32_Vobfus.AC.exe	82
PID 1176 wrote to memory of 4008	1176	Worm.Win32_Vobfus.AC.exe	82
PID 1176 wrote to memory of 4008	1176	Worm.Win32_Vobfus.AC.exe	82
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79
PID 4008 wrote to memory of 1176	4008	weuiyop.exe	79

C:\Users\Admin\AppData\Local\Temp\Worm.Win32_Vobfus.AC.exe
"C:\Users\Admin\AppData\Local\Temp\Worm.Win32_Vobfus.AC.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1176
- C:\Users\Admin\weuiyop.exe
  "C:\Users\Admin\weuiyop.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4008

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\weuiyop.exe

Filesize
53KB

MD5
38ebf58136b3a273b9661197b1ed92d1

SHA1
efa4fe955dd0974efe7a112f19eef6e9c2bbbf05

SHA256
2960a3ceecc625895589eb820d32aa63c6d858ff0cd994f68e289d02fa624828

SHA512
4910631ead42afb7e94e04adf9cb89a9a9135fdce49d237babfba840e6ecb488e062f21bcefe77c1b614b167b6f8d64b07ff18746596081906e3a743f3219fac

Download Submit
memory/1176-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1176-37-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4008-34-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4008-38-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download