Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20230831-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
b1cf4f65f69ea5cd13b14fe97ae0f544
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SHA1
5710a7af66f0211d6de3be866f853a97153eda06
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SHA256
619dbb0c92c8d72b8095ff556061526c5f1a9616cb3887455ed71f49c9e40388
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SHA512
e479c809370dead9c4c59a3520e6a36a63f9808d2e461eb041d74df6afc5dc468fc2d203839cc8701ef57a1cf56fb5dd34aa054f62300f8335d5e6f4e595d9f7
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SSDEEP
49152:NvahBYjCO4Dt2d5aKCuVPzlEmVQL0wvwka+NDkE2Hmk/+FooGd7THHB72eh2NT:NvUt2d5aKCuVPzlEmVQ0wvwf+ND3K
Malware Config
Extracted
quasar
1.4.1
School01
10.10.10.130:4782
10.10.10.130:5000
f9c62ade-0f06-4c0a-8ad8-5b4ae4808372
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encryption_key
4C5C5F46BBF00C6289ECEE7D680DF7D407856D81
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install_name
google_crash_reporter.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Google Chrome Crash Reporter
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subdirectory
Google Chrome
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Client-built.exe
Files
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Client-built.exe.exe windows:4 windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 7KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ