8b9147aeca757bc36f30e98c7481ec302d2be6de1b893a6f2ad80864f1106fb3

Resubmissions

03-08-2024 19:46

240803-yg8nestbqr 10

03-08-2024 19:44

240803-ygbcxsxhld 6

03-08-2024 19:41

240803-yd6pnaxgpa 6

Analysis

max time kernel
150s
max time network
156s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
03-08-2024 19:41

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General

Target

win-airplay/avutil-56.dll
Size

632KB
MD5

77728494071d91965eafcb429f7f5079
SHA1

3ff9000c759e41fcc71cd05fad6162ce94b1e787
SHA256

1a2c893c4f3abd0f5f0536e49149d4ef410b307d9285d687bc5a25b15db88df1
SHA512

74b6c71c52b7f3e42684ac613aa8754ac7a185eda59bc33964d8d637f4bca4a15a0bc7f39791f56f3ac10079716956970d3a6b51f1da1aa427dbcd30ffe7199b
SSDEEP

12288:LJzDgD5bRZUMvyNrgKhC7obcuNqE+ZlixX:LJzU5bIMaN8Kk

Score

4^/10

discovery

Malware Config

Signatures

Drops file in Windows directory 1 IoCs

Processes:

chrome.exe

description ioc process

File opened for modification C:\Windows\SystemTemp chrome.exe
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

476 4820 WerFault.exe rundll32.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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SystemTemp	chrome.exe

pid	pid_target	process	target process
476	4820	WerFault.exe	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

chrome.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Modifies data under HKEY_USERS 2 IoCs

Processes:

chrome.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	chrome.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133671878635414701"	chrome.exe

Modifies registry class 1 IoCs

Processes:

MiniSearchHost.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\Local Settings\MuiCache MiniSearchHost.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

chrome.exe

pid process

4356 chrome.exe
4356 chrome.exe
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs

Processes:

chrome.exe

pid process

4356 chrome.exe
4356 chrome.exe
4356 chrome.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3761892313-3378554128-2287991803-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

chrome.exe

description	pid	process
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe
Token: SeShutdownPrivilege	4356	chrome.exe
Token: SeCreatePagefilePrivilege	4356	chrome.exe

Suspicious use of FindShellTrayWindow 26 IoCs

Processes:

chrome.exe

pid	process
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe

Suspicious use of SendNotifyMessage 12 IoCs

Processes:

chrome.exe

pid	process
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe
4356	chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MiniSearchHost.exe

pid process

2260 MiniSearchHost.exe

pid	process
2260	MiniSearchHost.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

rundll32.exechrome.exe

description	pid	process	target process
PID 3712 wrote to memory of 4820	3712	rundll32.exe	rundll32.exe
PID 3712 wrote to memory of 4820	3712	rundll32.exe	rundll32.exe
PID 3712 wrote to memory of 4820	3712	rundll32.exe	rundll32.exe
PID 4356 wrote to memory of 4900	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 4900	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 3768	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 1284	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 1284	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe
PID 4356 wrote to memory of 476	4356	chrome.exe	chrome.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\win-airplay\avutil-56.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3712

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\win-airplay\avutil-56.dll,#1
2⤵
- System Location Discovery: System Language Discovery
PID:4820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 480
3⤵
- Program crash
PID:476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4820 -ip 4820
1⤵
PID:3768

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:2260

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Drops file in Windows directory
- Enumerates system info in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4356

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff93ed3cc40,0x7ff93ed3cc4c,0x7ff93ed3cc58
2⤵
PID:4900

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1764,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=1760 /prefetch:2
2⤵
PID:3768

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2028,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=2132 /prefetch:3
2⤵
PID:1284

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2184,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=2200 /prefetch:8
2⤵
PID:476

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3108,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=3256 /prefetch:1
2⤵
PID:1544

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3124,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=3400 /prefetch:1
2⤵
PID:1364

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4436,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=3764 /prefetch:8
2⤵
PID:1208

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4580,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=4552 /prefetch:1
2⤵
PID:1812

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4960,i,9641717158812802173,6918331810263903111,262144 --variations-seed-version=20240802-050153.822000 --mojo-platform-channel-handle=4520 /prefetch:8
2⤵
PID:4412

C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
1⤵
PID:5112

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
1⤵
PID:5108

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

System Location Discovery

T1614

System Language Discovery

T1614.001

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
Filesize
2B

MD5
d751713988987e9331980363e24189ce

SHA1
97d170e1550eee4afc0af065b78cda302a97674c

SHA256
4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

SHA512
b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
Filesize
101KB

MD5
7dd9c483b39462e4678533fc28e3dcfa

SHA1
8ee84f5ffdae979d69f0954b887435c699026a45

SHA256
c25cd89652d3311f1360c1f410f00434604b23b8e93711fc491177208810be77

SHA512
da5cf69fb3c5f77c598fc52ee7697ab34a3a526a146d88c8f203e85fb353c418a75b209a0ef2f1315f9fa1679451d8e0970de6b0b8eb20f476ed93ec79aea10d

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat
Filesize
10KB

MD5
d12e797f18cb79137ad12b5e5139e1b8

SHA1
f15fb437b1be86b714e278ce927b315fa0e16ea3

SHA256
afb0f4a0229174f8118ab512b569fdb9eb3ebb0389cb11c9f4a0a2aa88ec258b

SHA512
f6e8f99bcd0ecff7683c8e56fa2ffa3fdff16d6c17a2066b36bc3d78e2838130b5b23059a239b29a7ebdd0b5ca36b3f9cf388945bf1aad50a3f91cb8091223cd

Download Submit
\??\pipe\crashpad_4356_INLCYONWOADEBWTQ
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit