hxxps://postwc[.]buzz/au

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
05-07-2024 05:52

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General

Target

https://postwc.buzz/au

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

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4312	msedge.exe
4312	msedge.exe
3220	msedge.exe
3220	msedge.exe
3268	identity_helper.exe
3268	identity_helper.exe
4372	msedge.exe
4372	msedge.exe
4372	msedge.exe
4372	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs

pid	Process
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe
3220	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 2596	3220	msedge.exe	80
PID 3220 wrote to memory of 2596	3220	msedge.exe	80
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 3236	3220	msedge.exe	83
PID 3220 wrote to memory of 4312	3220	msedge.exe	84
PID 3220 wrote to memory of 4312	3220	msedge.exe	84
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85
PID 3220 wrote to memory of 4828	3220	msedge.exe	85

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://postwc.buzz/au
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:3220
- 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,0x100,0x104,0xd8,0x108,0x7ffbfdde46f8,0x7ffbfdde4708,0x7ffbfdde4718
  2⤵
  PID:2596
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2224 /prefetch:2
  2⤵
  PID:3236
- 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=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2292 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4312
- 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=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2876 /prefetch:8
  2⤵
  PID:4828
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --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=3348 /prefetch:1
  2⤵
  PID:4164
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --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=3356 /prefetch:1
  2⤵
  PID:1720
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4980 /prefetch:1
  2⤵
  PID:5056
- 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=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5260 /prefetch:8
  2⤵
  PID:2600
- 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=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5260 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3268
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5324 /prefetch:1
  2⤵
  PID:2364
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --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=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5340 /prefetch:1
  2⤵
  PID:3648
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --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=5072 /prefetch:1
  2⤵
  PID:2252
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2208,8628189110062051257,468455656191246664,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1836 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4372

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3992

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:5064

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

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Downloads

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

Filesize
152B

MD5
e81c757cdb64c4fd5c91e6ade1a16308

SHA1
19dc7ff5e8551a2b08874131d962b697bb84ad9b

SHA256
82141d451d07bdb68991f33c59129214dd6d3d10158aeb7a1dc81efbc5fb12b3

SHA512
ba8de0b3b04fec5a96d361459dde0941b1b70f5be231fdec94806efa3ecf1e8faf8e27b1800fa606dc4a82e29d4cf5109b94109e5ad242ddf9f4671e2acbcfbd

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

Filesize
152B

MD5
2e57ec8bd99545e47a55d581964d0549

SHA1
bd7055ea7df7696298a94dedfc91136e3b530db8

SHA256
a50ba35608edc2f3360cc71be0d4b29bba0e3382d1f08f24df5322ce2ad2443c

SHA512
6b9b73d983c472149629c842e16e4f7c2f8a0a3bb6dd64837ef647db810ef1beb3a02b15dc1eec2c5de8aee6b3ca195c7d26c432705061c5b0ec7841a5bbf106

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

Filesize
469B

MD5
3a1ff4ffc6636fa8f7fba511181052dd

SHA1
07552f9f6a36a158b04d8a0cf8d18be04d24bcf5

SHA256
addbc379ab2beff9129b27eb9ef3fe80a2f8ad99749b20df7ddc16bd0cbd3a72

SHA512
86350c9a196cc50fca2119751d173e5833f642cb96500e267d7f903c5b34b49d45057d28ded755de1a243be02bab3cfb06fab1ff5e9f1626d152ed5557925284

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

Filesize
6KB

MD5
68c749799c372e37ba61b6e863ebee7a

SHA1
0de125703d78bddeb7c835ad78dc1f61f6419cfc

SHA256
fac0b3378f06fb66dc6766c53a50912d5f410d723c02970e2cd23531577c96a2

SHA512
3acf4e6506b736a081c887cc7a6b93078eeba38baea3265aed15d44f98bc3b81f699f3da3f17efcad7780877c2b714aa91629ea7bbf0fe0e1facf8085b23add4

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

Filesize
6KB

MD5
402e5ebeaba7ef092b31e886a826513f

SHA1
45da3c9faa980154a87096383953c7f5376f1606

SHA256
52ceff9a4ffb345b6aa7a74d71efeb171b1e545a1b1937401b98f5e971871152

SHA512
0348c573f5704aa84d4f60388897f80bef711c9702f2762d4c03a5aa069005100e79a023c66c232ed67a4543ca49fcd0b3a4e773313ae2de190658db1e1d0865

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
b041ecfb2b4280a1d5d8ca474a51e23c

SHA1
b5dadac4761af038cba849c2b6e8dd31f100f927

SHA256
37a50d789250c64204ef61e9f55636d7345fffcce76077b43158b7fad0fa79b0

SHA512
351bab00fc8561183b4bc5663b870ae3eefe93e236f47bf1868b6f26e848722a4aa260bd11a18a139f491456c165ff7e23c57cdccab7573b424538fa843c4c5c

Download Submit