hxxps://bs[.]serving-sys[.]com/Serving/adServer[.]bs

Analysis

max time kernel
39s
max time network
39s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2023, 08:50

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General

Target

https://bs.serving-sys.com/Serving/adServer.bs

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

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133295718616215828"	chrome.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	chrome.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
628	chrome.exe
628	chrome.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs

pid	Process
628	chrome.exe
628	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe
Token: SeShutdownPrivilege	628	chrome.exe
Token: SeCreatePagefilePrivilege	628	chrome.exe

Suspicious use of FindShellTrayWindow 26 IoCs

pid	Process
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe
628	chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 5016	628	chrome.exe	85
PID 628 wrote to memory of 5016	628	chrome.exe	85
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 216	628	chrome.exe	86
PID 628 wrote to memory of 4308	628	chrome.exe	87
PID 628 wrote to memory of 4308	628	chrome.exe	87
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88
PID 628 wrote to memory of 4000	628	chrome.exe	88

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" "--simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT'" https://bs.serving-sys.com/Serving/adServer.bs
1⤵
- Enumerates system info in registry
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:628
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffc4bd89758,0x7ffc4bd89768,0x7ffc4bd89778
  2⤵
  PID:5016
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1792 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:2
  2⤵
  PID:216
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2168 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:8
  2⤵
  PID:4308
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2224 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:8
  2⤵
  PID:4000
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3188 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:1
  2⤵
  PID:2028
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3200 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:1
  2⤵
  PID:2224
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4964 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:8
  2⤵
  PID:536
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5000 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:8
  2⤵
  PID:400
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5032 --field-trial-handle=1864,i,3583437075870627040,6254925263568069837,131072 /prefetch:8
  2⤵
  PID:3916

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
1⤵
PID:1544

Network

MITRE ATT&CK Enterprise v6

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\Google\Chrome\User Data\Default\Preferences

Filesize
6KB

MD5
51e50cd13c86d24d9a7e00867910a6e8

SHA1
294d877f350d973785086d0f91a6d17360bbde4c

SHA256
cfc7a25292ae6441b344a9ea68b4d87258ac6a66fdff8f1be90fbbd29552d247

SHA512
e98679fa5288c9d804d1661d228ed6c4c3757b99b8b7cf8f1e18f2936bca2ab6cfd8f8cd23dbd200ecc175d11563dd6ca6bdced05a6a96eaf5c011b605fb5c13

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences

Filesize
15KB

MD5
cdd1c2c5237f2557e8df6aaa489727b6

SHA1
3c61efd3630633b7ec04dac81226bd09f2653390

SHA256
aceee44da34d7642b55e28db05d72a8618fc159f356f5e188876530c8ef6ca20

SHA512
f9f113f180ae3fca9dfd07d17a2577f25fdde91773e70ffa78f804238fde44d049fcc5f135ed8b9f590d9b4df2cefd133e56425e0fc4979995490578e57ae967

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C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

Filesize
153KB

MD5
22d1c9778e83dedc917f4a3c2e5ab426

SHA1
3fc9e3939607bddb4d91ffac8acddc3479086d08

SHA256
c185e746d2fb9c8f8a2d4a2690364f9dfe9d9a46a5addecdc9a1bb24a0e1b6f9

SHA512
c4c6c3dabd1a302fa3a315024b8ac70da1923637bbc642307c065e39a50e730497b933f91afca3be00d3b413085fee26da60cd50b936f7367050e68b46f4e414

Download Submit
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json

Filesize
2B

MD5
99914b932bd37a50b983c5e7c90ae93b

SHA1
bf21a9e8fbc5a3846fb05b4fa0859e0917b2202f

SHA256
44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

SHA512
27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd

Download Submit