vobfus | 9ad79c0d537c12f7b47fa0726dbdf2706a03dd9662d8892bdc4045dad3b01c4d

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 09:36

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General

Target

fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
Size

204KB
MD5

c013422f5714981b7813d3dd73b7ddfc
SHA1

4fe415fe185911e1bbce18c34c790fa0d3d35275
SHA256

fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97
SHA512

935cff53efc66b4a6a44a40ad297593dfb57c9789ca18cfef0298878c8de75d77747bdf9cb130161fa88e4620ac3d2b3a66d9c7a11e21d6d541c548e4c3e7c7d
SSDEEP

3072:3Hjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1:Xo/BHng5HaVG4G/1z+QVMbg1

Score

10^/10

vobfus discovery persistence worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
632	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
632	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
632	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
632	fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe

C:\Users\Admin\AppData\Local\Temp\fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe
"C:\Users\Admin\AppData\Local\Temp\fc7c419991d8e3521fac232994fd6ec24127defbf35fb6a7eaedf280310e6b97.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:632

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

Modify Registry

T1112

Credential Access

Discovery

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\Roaming\AG58FPQON.exe

Filesize
204KB

MD5
c53175c00a548b910c18972cc58b5bde

SHA1
c29db38f08981b193263bb5d5047967b541e9db3

SHA256
7c97e27e140ad08d12fc5dac24d7ef3f98e8899b6a0ad9160300bdd570ddccc2

SHA512
ac9e025bea1b5264f1e64f982990944bb937ddf914796804fef7b7f10066f3a1c3fb6bb6ae47de21a9160e05b8758c7802baff2d0205342a62fd66dba9f05af3

Download Submit
memory/632-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/632-10-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/632-74-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/632-281-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads