hxxps://files[.]buuoj[.]cn/files/2c46921cf2d628130b67f3648fe24934/writeup_template[.]md

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
19/07/2024, 11:56

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General

Target

https://files.buuoj.cn/files/2c46921cf2d628130b67f3648fe24934/writeup_template.md

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 10 IoCs

pid	Process
848	msedge.exe
848	msedge.exe
3192	msedge.exe
3192	msedge.exe
2744	identity_helper.exe
2744	identity_helper.exe
4504	msedge.exe
4504	msedge.exe
4504	msedge.exe
4504	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs

pid	Process
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe
3192	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3192 wrote to memory of 3128	3192	msedge.exe	84
PID 3192 wrote to memory of 3128	3192	msedge.exe	84
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 4348	3192	msedge.exe	85
PID 3192 wrote to memory of 848	3192	msedge.exe	86
PID 3192 wrote to memory of 848	3192	msedge.exe	86
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87
PID 3192 wrote to memory of 4808	3192	msedge.exe	87

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://files.buuoj.cn/files/2c46921cf2d628130b67f3648fe24934/writeup_template.md
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:3192
- 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,0x100,0x104,0xd8,0x108,0x7ffd298046f8,0x7ffd29804708,0x7ffd29804718
  2⤵
  PID:3128
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2124 /prefetch:2
  2⤵
  PID:4348
- 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=2112,15062595981542387364,3024380818199684879,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2184 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:848
- 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=2112,15062595981542387364,3024380818199684879,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2652 /prefetch:8
  2⤵
  PID:4808
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=3296 /prefetch:1
  2⤵
  PID:432
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=3424 /prefetch:1
  2⤵
  PID:4092
- 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=2112,15062595981542387364,3024380818199684879,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 /prefetch:8
  2⤵
  PID:3552
- 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=2112,15062595981542387364,3024380818199684879,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5024 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2744
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=5272 /prefetch:1
  2⤵
  PID:4524
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=5312 /prefetch:1
  2⤵
  PID:5084
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=5668 /prefetch:1
  2⤵
  PID:1704
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=5408 /prefetch:1
  2⤵
  PID:552
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2112,15062595981542387364,3024380818199684879,131072 --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=1696 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4504

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1932

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:1600

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
584971c8ba88c824fd51a05dddb45a98

SHA1
b7c9489b4427652a9cdd754d1c1b6ac4034be421

SHA256
e2d8de6c2323bbb3863ec50843d9b58a22e911fd626d31430658b9ea942cd307

SHA512
5dbf1a4631a04d1149d8fab2b8e0e43ccd97b7212de43b961b9128a8bf03329164fdeb480154a8ffea5835f28417a7d2b115b8bf8d578d00b13c3682aa5ca726

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

Filesize
152B

MD5
b28ef7d9f6d74f055cc49876767c886c

SHA1
d6b3267f36c340979f8fc3e012fdd02c468740bf

SHA256
fa6804456884789f4bdf9c3f5a4a8f29e0ededde149c4384072f3d8cc85bcc37

SHA512
491f893c8f765e5d629bce8dd5067cef4e2ebc558d43bfb05e358bca43e1a66ee1285519bc266fd0ff5b5e09769a56077b62ac55fa8797c1edf6205843356e75

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

Filesize
5KB

MD5
14f407b1d5d44e542ee09325628d5fbc

SHA1
5d8cafb78224a596e68b7de1ce29eed5ade7d694

SHA256
5bff6fe6a03f865ab879d649738ae3f8d266f65cb61c8715532c694a7d8dc859

SHA512
79d61dc6f53fcf6e1e2684d5bf05cfb22ce67ef9e32ef0bc226a7c0841711750bdb1f9376173d2a8d4bc24d8b7d0ffe03884c3ffd5e61002f090567aaaa9826a

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

Filesize
6KB

MD5
1d6cca5993952065688897ecacde72ed

SHA1
5d5004d1dd77d8e710e25f5786bbda983d0e9bde

SHA256
7d4b5a051254fc1b63f3d7d7913671175622149afa33d81e45c42a5b01408117

SHA512
fef938b3adcef3d2da3971155bd7c84d629815a75139c36090b199ed661604ce0e727adda44d2653f5416a1830024e153a4cc525386c132be9073310b6ffbba3

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
98388172ce2b8cdf2799875e81a14026

SHA1
46840180afd6bb53bf290685220f70f783ac214d

SHA256
bd22d66f08b1f1c232c21271a2805f960410e5a36f9317b3251db3276def61e6

SHA512
7b918aa1bff4105dd23c462ebdc439417f660dd301df412d7fa640a1b6d0f63e80bb3562fd36e3b77a01b7b17c8f6fe5e2ba80534ae2d080da8c76e4762d39e0

Download Submit