Analysis
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max time kernel
69s -
max time network
146s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
09-01-2025 09:33
Behavioral task
behavioral1
Sample
image logger.exe
Resource
win7-20241010-en
General
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Target
image logger.exe
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Size
3.1MB
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MD5
c1681b5b8a3f9d40d46c6bdaaa66083d
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SHA1
51e7ec6ba88909bd2de4ec9b36cc31948624e4f3
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SHA256
6a97a356e44ccd5f33ac40934f77e796faca89403e2daae4f36c66ff52cbb22f
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SHA512
8ce33bd2c8f40ae92acbae4898bfff51a699f91c8f70b212921fbfbf2bf9b523a4049ee421d7e0d559e29a4df6faa27707d03fa987917ce7077c635090be4fff
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SSDEEP
49152:uvnI22SsaNYfdPBldt698dBcjHWFwGGBeFLoqdhuTHHB72eh2NT:uvI22SsaNYfdPBldt6+dBcjHTGX
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.18.43:4782
8f30f04b-4a42-46fb-9c42-479d848d3ab8
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encryption_key
4767B12C6A8C8F78710F92C585FA862093584320
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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 3 IoCs
resource yara_rule behavioral1/memory/2388-1-0x0000000001000000-0x0000000001324000-memory.dmp family_quasar behavioral1/files/0x0003000000018334-6.dat family_quasar behavioral1/memory/2820-9-0x0000000000350000-0x0000000000674000-memory.dmp family_quasar -
Executes dropped EXE 1 IoCs
pid Process 2820 Client.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Enumerates system info in registry 2 TTPs 3 IoCs
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 -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2836 schtasks.exe 2468 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2588 chrome.exe 2588 chrome.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2388 image logger.exe Token: SeDebugPrivilege 2820 Client.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe Token: SeShutdownPrivilege 2588 chrome.exe -
Suspicious use of FindShellTrayWindow 35 IoCs
pid Process 2820 Client.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe -
Suspicious use of SendNotifyMessage 33 IoCs
pid Process 2820 Client.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe 2588 chrome.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2820 Client.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 2388 wrote to memory of 2468 2388 image logger.exe 29 PID 2388 wrote to memory of 2468 2388 image logger.exe 29 PID 2388 wrote to memory of 2468 2388 image logger.exe 29 PID 2388 wrote to memory of 2820 2388 image logger.exe 31 PID 2388 wrote to memory of 2820 2388 image logger.exe 31 PID 2388 wrote to memory of 2820 2388 image logger.exe 31 PID 2820 wrote to memory of 2836 2820 Client.exe 32 PID 2820 wrote to memory of 2836 2820 Client.exe 32 PID 2820 wrote to memory of 2836 2820 Client.exe 32 PID 2588 wrote to memory of 2772 2588 chrome.exe 35 PID 2588 wrote to memory of 2772 2588 chrome.exe 35 PID 2588 wrote to memory of 2772 2588 chrome.exe 35 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 2320 2588 chrome.exe 37 PID 2588 wrote to memory of 3020 2588 chrome.exe 38 PID 2588 wrote to memory of 3020 2588 chrome.exe 38 PID 2588 wrote to memory of 3020 2588 chrome.exe 38 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 PID 2588 wrote to memory of 3052 2588 chrome.exe 39 -
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\image logger.exe"C:\Users\Admin\AppData\Local\Temp\image logger.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2388 -
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:2468
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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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2820 -
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:2836
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"1⤵
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2588 -
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=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef2099758,0x7fef2099768,0x7fef20997782⤵PID:2772
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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=1144 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:22⤵PID:2320
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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 --mojo-platform-channel-handle=1512 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:82⤵PID:3020
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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=utility --mojo-platform-channel-handle=1644 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:82⤵PID:3052
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2156 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:12⤵PID:2952
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2164 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:12⤵PID:1984
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1608 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:22⤵PID:1932
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1436 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:12⤵PID:2680
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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.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2592 --field-trial-handle=1408,i,16196431696721204140,2883009255927921277,131072 /prefetch:82⤵PID:1696
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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:2024
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
16B
MD518e723571b00fb1694a3bad6c78e4054
SHA1afcc0ef32d46fe59e0483f9a3c891d3034d12f32
SHA2568af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa
SHA51243bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2
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Filesize
264KB
MD5f50f89a0a91564d0b8a211f8921aa7de
SHA1112403a17dd69d5b9018b8cede023cb3b54eab7d
SHA256b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
SHA512bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58
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Filesize
4KB
MD59db0ecd1db086b5485c5d843269774d2
SHA109fc1eae9ffabca74ec0464f85d3945cbd0b38ba
SHA256ebc216a04bd6d24b1ad0009d88b8d400255b7a5b8af4f48f30b725910b9a38fb
SHA512e473231c45300b20ab4e052c82c91a2cda20c99019e9baa458a7d84da0631d105d900ac8c59159a182c3698aae1db341280692a671b788dd093a9105e6383a8e
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Filesize
4KB
MD592d845131ccd63360735df5c5370c484
SHA16d072a3b42e2d00bd54cc057ac88e295ca1a482a
SHA256c8d254bea05b791c010c70c75a3a8378f226646842c9bd1edcb2a39a6a14718e
SHA51233860a1a996520b3f4c1bb6b57c3a0d6b76188d40b28f6b70dc845785081c063a8460eed7715ef27b12048950c410f8a9380115bb05f0a81358917e032c20325
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Filesize
3.1MB
MD5c1681b5b8a3f9d40d46c6bdaaa66083d
SHA151e7ec6ba88909bd2de4ec9b36cc31948624e4f3
SHA2566a97a356e44ccd5f33ac40934f77e796faca89403e2daae4f36c66ff52cbb22f
SHA5128ce33bd2c8f40ae92acbae4898bfff51a699f91c8f70b212921fbfbf2bf9b523a4049ee421d7e0d559e29a4df6faa27707d03fa987917ce7077c635090be4fff