hxxps://api[.]ustars[.]net[.]cn

Analysis

max time kernel
145s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14/08/2024, 09:08

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General

Target

https://api.ustars.net.cn

Score

3^/10

discovery

Malware Config

Signatures

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
908	msedge.exe
908	msedge.exe
3880	msedge.exe
3880	msedge.exe
3408	identity_helper.exe
3408	identity_helper.exe
1308	msedge.exe
1308	msedge.exe
1308	msedge.exe
1308	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs

pid	Process
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe
3880	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3880 wrote to memory of 3248	3880	msedge.exe	84
PID 3880 wrote to memory of 3248	3880	msedge.exe	84
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 4684	3880	msedge.exe	85
PID 3880 wrote to memory of 908	3880	msedge.exe	86
PID 3880 wrote to memory of 908	3880	msedge.exe	86
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87
PID 3880 wrote to memory of 2064	3880	msedge.exe	87

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://api.ustars.net.cn
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:3880
- 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,0x100,0x104,0xd8,0x108,0x7ffe80f946f8,0x7ffe80f94708,0x7ffe80f94718
  2⤵
  PID:3248
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2156 /prefetch:2
  2⤵
  PID:4684
- 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=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2208 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:908
- 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=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2876 /prefetch:8
  2⤵
  PID:2064
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=3304 /prefetch:1
  2⤵
  PID:1328
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=3312 /prefetch:1
  2⤵
  PID:3620
- 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=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5148 /prefetch:8
  2⤵
  PID:3652
- 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=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5148 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3408
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=5132 /prefetch:1
  2⤵
  PID:2384
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=5292 /prefetch:1
  2⤵
  PID:5040
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=5704 /prefetch:1
  2⤵
  PID:5032
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=5732 /prefetch:1
  2⤵
  PID:912
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5536 /prefetch:1
  2⤵
  PID:1840
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3904 /prefetch:1
  2⤵
  PID:4544
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=6036 /prefetch:1
  2⤵
  PID:2216
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2132,11528422349723142365,16874706797970395141,131072 --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=5536 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1308

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:4140

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

Browser Information Discovery

T1217

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\3f933708-a2f5-4b35-929a-ababd7b44a7c.tmp

Filesize
11KB

MD5
c3d30b868248babd818f6dc8280a4cbb

SHA1
b41768c3fb9d72eea0f640fff66fa8037d4b0e55

SHA256
39393e8dd8281fe19d842bbe91d9a701458f38aaa172c42843dba39fe5d8ad07

SHA512
d1886f2c348621e5385f70b761099845e7db4900c0b0c655cb4ed38f86f9bb7140f9f0617286811487e7ae10ec2e32d40713636e6491e189b2fda2737d24ed99

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

Filesize
152B

MD5
9b008261dda31857d68792b46af6dd6d

SHA1
e82dc88e2d1da2df7cb19d79a0346b9bb90d52b3

SHA256
9ac598d4f8170f7e475d84103aead9e3c23d5f2d292741a7f56a17bde8b6f7da

SHA512
78853091403a06beeec4998e2e3a4342111895ffd485f7f7cd367741a4883f7a25864cba00a6c86f27dc0c9ce9d04f08011ecc40c8ae9383d33274739ac39f10

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

Filesize
152B

MD5
0446fcdd21b016db1f468971fb82a488

SHA1
726b91562bb75f80981f381e3c69d7d832c87c9d

SHA256
62c5dc18b25e758f3508582a7c58bb46b734a774d97fc0e8a20614235caa8222

SHA512
1df7c085042266959f1fe0aedc5f6d40ceba485b54159f51f0c38f17bb250b79ea941b735e1b6faf219f23fe8ab65ac4557f545519d52d5416b89ad0f9047a31

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

Filesize
6KB

MD5
e5fcedae1ab675861976b896325ef60d

SHA1
ce692065bfae320c39fcd1c33abca95a690ddaf7

SHA256
13247dbe25cd335b99fa2836f8cda8d51d6291ffe312c0d34f42c2e1f2f0471c

SHA512
388046c61f113d39889f081a8bfd468719f50f318911e2f66c78760203bdfd1db1e13fcc3b395ae25e9f4bbc373b60db72ed21cf32190b28a544db312c4ace83

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

Filesize
6KB

MD5
09fa4e6feeb5d85c6d82017560117c83

SHA1
32e347764c96f90a3d7e4807d33518dc4632e708

SHA256
861cda2b4362ab95c11c6f11500fc96a5637ca133ecc6a5c6a45975c0d981c79

SHA512
10ae408f9149bdb4271baddd1d34fa0714866c47ee8f3575d62b2dc5f9e25eda5b6c8276b7b2c0393e4de09361b61e7eb47dbbed268b4da47521e7e4f7121489

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