hxxp://ctldl[.]windowsupdate[.]com/msdownload/update/v3/static/trustedr/en/pinrulesstl[.]cab?2c1927c5dcd1611a

Analysis

max time kernel
34s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 12:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/pinrulesstl.cab?2c1927c5dcd1611a

Score

1^/10

Malware Config

Signatures

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2020	msedge.exe
2020	msedge.exe
2276	msedge.exe
2276	msedge.exe
4008	identity_helper.exe
4008	identity_helper.exe
4992	msedge.exe
4992	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs

pid	Process
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe
2276	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 1280	2276	msedge.exe	82
PID 2276 wrote to memory of 1280	2276	msedge.exe	82
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2460	2276	msedge.exe	83
PID 2276 wrote to memory of 2020	2276	msedge.exe	84
PID 2276 wrote to memory of 2020	2276	msedge.exe	84
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85
PID 2276 wrote to memory of 1932	2276	msedge.exe	85

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/pinrulesstl.cab?2c1927c5dcd1611a
1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff80c8546f8,0x7ff80c854708,0x7ff80c854718
  2⤵
  PID:1280
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2240 /prefetch:2
  2⤵
  PID:2460
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2292 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2020
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2720 /prefetch:8
  2⤵
  PID:1932
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3216 /prefetch:1
  2⤵
  PID:4696
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3240 /prefetch:1
  2⤵
  PID:2016
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4960 /prefetch:8
  2⤵
  PID:1652
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4960 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4008
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5348 /prefetch:1
  2⤵
  PID:4836
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5356 /prefetch:1
  2⤵
  PID:2284
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5396 /prefetch:1
  2⤵
  PID:1236
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5128 /prefetch:1
  2⤵
  PID:2940
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5788 /prefetch:8
  2⤵
  PID:4556
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5688 /prefetch:1
  2⤵
  PID:2372
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6044 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4992
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2224,12558309253856115139,12065234947661946312,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3684 /prefetch:1
  2⤵
  PID:5992

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:2744

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
4f7152bc5a1a715ef481e37d1c791959

SHA1
c8a1ed674c62ae4f45519f90a8cc5a81eff3a6d7

SHA256
704dd4f98d8ca34ec421f23ba1891b178c23c14b3301e4655efc5c02d356c2bc

SHA512
2e6b02ca35d76a655a17a5f3e9dbd8d7517c7dae24f0095c7350eb9e7bdf9e1256a7009aa8878f96c89d1ea4fe5323a41f72b8c551806dda62880d7ff231ff5c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

Filesize
152B

MD5
ea98e583ad99df195d29aa066204ab56

SHA1
f89398664af0179641aa0138b337097b617cb2db

SHA256
a7abb51435909fa2d75c6f2ff5c69a93d4a0ab276ed579e7d8733b2a63ffbee6

SHA512
e109be3466e653e5d310b3e402e1626298b09205d223722a82344dd78504f3c33e1e24e8402a02f38cd2c9c50d96a303ce4846bea5a583423937ab018cd5782f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
5KB

MD5
155e08398e45afed36c1957e1e25e441

SHA1
3cd7b22119eebe926abb00826547e884d5573ea5

SHA256
fd4fe8ed2e7c483d7b01867dd6da71aa204fdb678534a7c8218b118ae9f09fbe

SHA512
c8dae60fe2300620974d6ef46bcf3fd8c3d5278440d3ace8ca96524ec230cdb5a39dec63e8ad0247da5f620c7c09776d7050da7d9386deeaea8ca354da80ecee

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
9d43b5649209642cd9acb018f755d9dc

SHA1
342f04960e88b428a3b16564a3665912a3e57257

SHA256
f92126c834c12450e8fd5720fae40911fa92daa43ff041b6c29a4069007f33ea

SHA512
4f64650f9ccaf5f5994fa1e0159059e2bdcc386c98ab636a8f86881f1614bc3c36b010118181a6a49fb84fadcb7c48bd25d22336185c0a8f0e10688d3d90400b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

Filesize
6KB

MD5
3b9db4c089805ac873f26ffa998409e9

SHA1
dc2d4c00327b642f6dd6ed515c992c81c4a6461b

SHA256
f3192d97551d6afede93c0662a424f9786441ee4aa558da276b32c30f019d3a2

SHA512
c9b00b43b5ddd69ec89714ad6307ff9919efddd69c91e09ffb9d18164307b72ccb17af386124796131d96f85182a7d816e2bd105b226b085c242fd6909df82b1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

Filesize
16B

MD5
6752a1d65b201c13b62ea44016eb221f

SHA1
58ecf154d01a62233ed7fb494ace3c3d4ffce08b

SHA256
0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

SHA512
9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
d41b4e063c4a9eefecf95a422bc96185

SHA1
f43e4aa1f7613ed3793dc2f4fed71f35cc970edf

SHA256
c181d6821f4e54d3228e2d2a48d64a275045dfb42460057e0095e2ad1e1c2364

SHA512
051c915d7230f94e7f1d561034177a2119821ee4849c51fe218e3e7f93ce62b3b74de646628c03a539e822f3cc8790ace302c55582075f984b3cf11277b58ff4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

Filesize
11KB

MD5
6dd24c3e9ac4a13a712484d47eb8520f

SHA1
bc88a6c4bdeed2a00e059b4da5a83b5a9bd696fa

SHA256
41d33a87b8a9c54051373148b6256d3467710e8c6c84feda5cdbeb6fe4b02726

SHA512
c5acf5f911a718ec9b7a04022f32a8d440b0a94f9dd8d6972aa44b0c3140a7e472be2668e37ef0d5aa94592ed4df3b139d4493ddae98e17b585b0eac34cf9475

Download Submit