hxxp://beaucouptaxservice[.]com

Analysis

max time kernel
152s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
31-10-2023 22:50

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General

Target

http://beaucouptaxservice.com

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 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
1756	msedge.exe
1756	msedge.exe
4464	msedge.exe
4464	msedge.exe
4216	identity_helper.exe
4216	identity_helper.exe
5672	msedge.exe
5672	msedge.exe
5672	msedge.exe
5672	msedge.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs

pid	Process
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe

Suspicious use of FindShellTrayWindow 25 IoCs

pid	Process
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe
4464	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4464 wrote to memory of 2756	4464	msedge.exe	86
PID 4464 wrote to memory of 2756	4464	msedge.exe	86
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 2128	4464	msedge.exe	87
PID 4464 wrote to memory of 1756	4464	msedge.exe	89
PID 4464 wrote to memory of 1756	4464	msedge.exe	89
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88
PID 4464 wrote to memory of 4252	4464	msedge.exe	88

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://beaucouptaxservice.com
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:4464
- 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,0x100,0x104,0xd8,0x108,0x7ff8a89f46f8,0x7ff8a89f4708,0x7ff8a89f4718
  2⤵
  PID:2756
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2252 /prefetch:2
  2⤵
  PID:2128
- 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=1480,13294603300280588629,7212303563563287067,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2808 /prefetch:8
  2⤵
  PID:4252
- 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=1480,13294603300280588629,7212303563563287067,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2296 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1756
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=3276 /prefetch:1
  2⤵
  PID:3420
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=3292 /prefetch:1
  2⤵
  PID:1052
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=5040 /prefetch:1
  2⤵
  PID:4072
- 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=1480,13294603300280588629,7212303563563287067,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5308 /prefetch:8
  2⤵
  PID:4364
- 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=1480,13294603300280588629,7212303563563287067,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5308 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4216
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=5348 /prefetch:1
  2⤵
  PID:1020
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=5400 /prefetch:1
  2⤵
  PID:3372
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5716 /prefetch:1
  2⤵
  PID:2348
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5676 /prefetch:1
  2⤵
  PID:3852
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1480,13294603300280588629,7212303563563287067,131072 --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=1888 /prefetch:2
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:5672

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3092

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3660

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
8f30b8232b170bdbc7d9c741c82c4a73

SHA1
9abfca17624e13728bd7fa6547e7e26e0695d411

SHA256
0916f816feace92a097267171f8aa8f944074530574a7aa1f9f0334899dfa3eb

SHA512
587d973b13b97c5b92621c776c18348a13ef451ccda32977baa529de33e47a27e7920a57fe7c4d0b2f0e4a8a3bca5c62cc5798cf97f19556028f88afb38b37be

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

Filesize
96B

MD5
5daba0bd1c1f4613d8abd1cca96ceebb

SHA1
aff291ecff426efbe07a1768d20ded17d0354472

SHA256
af062e46699bbebc6711fca11ae412473eaf7878646107196bdb4145351a918b

SHA512
c9abb4be371eefd7d1a3d512ef02fbf16b67367b1b75d5fa22e807ea5c924dd24a775e9f98e334c592de37d7c64cc994e0979262a7f2227c115b9d2c6e8e371d

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

Filesize
805B

MD5
4b31b40c039e93ec6509fa98ec4cf223

SHA1
64a3f26d236cec871dc493259e99cce132f543e7

SHA256
d8b05f3ac957f832d8babc5d02dc89fd027c1713387547a8b3d8208f13f4dd30

SHA512
04fcd6c417c29db64e5b9fa4b768426db70661be451bd047d32ce2ac81873df0371d229182f9f689e0aaa53ea50d44e0a8ad08823fd91174b3149edf9565e2cb

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

Filesize
111B

MD5
285252a2f6327d41eab203dc2f402c67

SHA1
acedb7ba5fbc3ce914a8bf386a6f72ca7baa33c6

SHA256
5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026

SHA512
11ce7cb484fee66894e63c31db0d6b7ef66ad0327d4e7e2eb85f3bcc2e836a3a522c68d681e84542e471e54f765e091efe1ee4065641b0299b15613eb32dcc0d

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

Filesize
6KB

MD5
6a62ad83e951353d4e75f6b935dbc6a9

SHA1
252303b541767515b01024dd85fd3dd93e540002

SHA256
6c3ea799af98d15495b9687b375ad158cdfde6ae55cc62be94d5e20d85a85ca5

SHA512
a62442eb4111f48a2d3696391a89077259eb4efaf314b2494f7599aef2e3dabddb9e647339aafe6d1a848d65102b575571fc714747ee205522bd3e3eaf5c7a12

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

Filesize
5KB

MD5
2a41f8ffdb90c5b4b1fdd03f92a7d0d8

SHA1
39958e6cac6d996cf23165357cec7481e63c0a81

SHA256
db2b4ed841976b468a69a7977a6daa9ca54946e514b7e9aae824bad789857027

SHA512
1cf307738888301fb5b597727fd74bb991ffc80cc2b80e320b86c453a9271d21aa3513a2ad3f30e10da2fc090488cdf3314e7ee228e1606193084def0da0bfa7

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

Filesize
24KB

MD5
0b8abe9b2d273da395ec7c5c0f376f32

SHA1
d7b266fb7310cc71ab5fdb0ef68f5788e702f2ec

SHA256
3751deeb9ad3db03e6b42dedcac68c1c9c7926a2beeaaa0820397b6ddb734a99

SHA512
3dd503ddf2585038aa2fedc53d20bb9576f4619c3dc18089d7aba2c12dc0288447b2a481327c291456d7958488ba2e2d4028af4ca2d30e92807c8b1cdcffc404

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
10KB

MD5
a953d4b541a1c82f12af36dc20c480b2

SHA1
31d73bed1091f6e53a9fd663d3873bb854db1e31

SHA256
3d985e94c1eade2e2fadcae7d96f774b7da779297dc40dad4f8d447c6f76f9a2

SHA512
b5401cdd5d639d23d549a05b1a81e8812c8e4fcbd4ed9ae315c3850cf7fe6c0b4e04b35c4442cc15da6f893b6af7f113bf621d3c20c60f200c06e62c7b0695d5

Download Submit