Analysis
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max time kernel
50s -
max time network
50s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
17-11-2024 21:54
General
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Target
PORQUEPUTASYANOSIRVE.exe
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Size
3.1MB
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MD5
73565f33ed4d8741291cbb30409f1727
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SHA1
4d3a54b28f3ea80f884a25905e27165bdc353109
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SHA256
aafe953e627f9e733e101d7211f0c9594dbdf82ec4019b2c9aa361cbc478f0de
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SHA512
d897b098ddcdc94ac9177bc9a90b700c8b9a7cfafa74f729beebf74a094f76a7bd69e764711bdfedcdd231465daef16e937676e391ca2c010df03fecc863b583
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SSDEEP
49152:uvyI22SsaNYfdPBldt698dBcjHdtRJ6CbR3LoGd7THHB72eh2NT:uvf22SsaNYfdPBldt6+dBcjHdtRJ68
Malware Config
Extracted
quasar
1.4.1
Office04
azxq0ap.localto.net:3425
e51e2b65-e963-4051-9736-67d57ed46798
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encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2632-1-0x0000000000F50000-0x0000000001274000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\SubDir\Client.exe family_quasar -
Executes dropped EXE 1 IoCs
Processes:
Client.exepid process 928 Client.exe -
Drops file in Windows directory 1 IoCs
Processes:
chrome.exedescription ioc process File opened for modification C:\Windows\SystemTemp chrome.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
chrome.exedescription 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
Processes:
chrome.exedescription ioc process Key created \REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry chrome.exe Set value (int) \REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "133763541177168201" chrome.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2456 schtasks.exe 4056 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
chrome.exepid process 3096 chrome.exe 3096 chrome.exe -
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
Processes:
chrome.exepid process 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe -
Suspicious use of AdjustPrivilegeToken 22 IoCs
Processes:
PORQUEPUTASYANOSIRVE.exeClient.exechrome.exedescription pid process Token: SeDebugPrivilege 2632 PORQUEPUTASYANOSIRVE.exe Token: SeDebugPrivilege 928 Client.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe Token: SeShutdownPrivilege 3096 chrome.exe Token: SeCreatePagefilePrivilege 3096 chrome.exe -
Suspicious use of FindShellTrayWindow 26 IoCs
Processes:
chrome.exepid process 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe -
Suspicious use of SendNotifyMessage 24 IoCs
Processes:
chrome.exepid process 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe 3096 chrome.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Client.exepid process 928 Client.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
PORQUEPUTASYANOSIRVE.exeClient.exechrome.exedescription pid process target process PID 2632 wrote to memory of 2456 2632 PORQUEPUTASYANOSIRVE.exe schtasks.exe PID 2632 wrote to memory of 2456 2632 PORQUEPUTASYANOSIRVE.exe schtasks.exe PID 2632 wrote to memory of 928 2632 PORQUEPUTASYANOSIRVE.exe Client.exe PID 2632 wrote to memory of 928 2632 PORQUEPUTASYANOSIRVE.exe Client.exe PID 928 wrote to memory of 4056 928 Client.exe schtasks.exe PID 928 wrote to memory of 4056 928 Client.exe schtasks.exe PID 3096 wrote to memory of 2124 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 2124 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4132 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 2504 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 2504 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe PID 3096 wrote to memory of 4936 3096 chrome.exe chrome.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\PORQUEPUTASYANOSIRVE.exe"C:\Users\Admin\AppData\Local\Temp\PORQUEPUTASYANOSIRVE.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:2456
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:928 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:4056
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"1⤵
- Drops file in Windows directory
- 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:3096 -
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:4 --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=123.0.6312.123 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x7ffde074cc40,0x7ffde074cc4c,0x7ffde074cc582⤵PID:2124
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1972,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=1968 /prefetch:22⤵PID:4132
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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 --no-appcompat-clear --field-trial-handle=2228,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2232 /prefetch:32⤵PID:2504
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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=service --no-appcompat-clear --field-trial-handle=2304,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2276 /prefetch:82⤵PID:4936
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3172,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3180 /prefetch:12⤵PID:244
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3184,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3220 /prefetch:12⤵PID:4016
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4572,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3684 /prefetch:12⤵PID:420
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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 --no-appcompat-clear --field-trial-handle=4800,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4812 /prefetch:82⤵PID:4220
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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 --no-appcompat-clear --field-trial-handle=4816,i,9269171973571224931,9021536995345218782,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4836 /prefetch:82⤵PID:640
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C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"1⤵PID:1264
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc1⤵PID:1920
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
649B
MD569ac811c08e40e8cc9a5823df3273cfd
SHA1cd6cd3ad91b17342f3cb97c2e026bab743ffd606
SHA2569073c8987d1d84635ed0c580fef15e719f9c3ae308c907f8ddeea121d707f6ea
SHA51246ff8cbf35f43e21348b789712862147cefc219dde3a963c19ee49d3fac62415516f5c429c77d102e81e6f18995f92cc9f8cc42d91c42337f1949b0694cbf486
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Filesize
2B
MD5d751713988987e9331980363e24189ce
SHA197d170e1550eee4afc0af065b78cda302a97674c
SHA2564f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
SHA512b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af
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Filesize
8KB
MD5fc53a23a11bffa0f17a2337bfa2dde05
SHA1a1adf322fe5afdacb3b0b477b4163ed678de783a
SHA25654974d796b9a5aa5aa9df2a7a65c42152db60bde3724c557ab321b25f7a72327
SHA512b1bc94a1e1f62346382bff422bf1872e288507337a1ed590f630f0894f88452ac764ebec3f38b38f9f7935c09e7df9f7561818d24c90f862d1ce50499ef9b812
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Filesize
235KB
MD5c90fd29cbcb414270615aac0f2b9c0ac
SHA1dac3a9e4e12cb60f008157316f00ef8ac6cf46a7
SHA256760f5c9487ffbe611256ad36c34df320e21f3214b9626425b05960bee3313d5c
SHA5129d325fd79609cac4fce84e4147cd31a25984f9138759fb571bca4f2d50074bf395a1b28eae4e0b2ab30367a96590f66cd652356bd9d8da188a9c3cba47804778
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Filesize
3.1MB
MD573565f33ed4d8741291cbb30409f1727
SHA14d3a54b28f3ea80f884a25905e27165bdc353109
SHA256aafe953e627f9e733e101d7211f0c9594dbdf82ec4019b2c9aa361cbc478f0de
SHA512d897b098ddcdc94ac9177bc9a90b700c8b9a7cfafa74f729beebf74a094f76a7bd69e764711bdfedcdd231465daef16e937676e391ca2c010df03fecc863b583
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e