Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240708-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e56a81260357e38e67e9661b5987f0ab
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SHA1
7f6e091f98c83bb57547d2c4cdc353940f7d11d9
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SHA256
27e49eb60d08a4eb21cd3cce9fdb929d9abb6976fb994cbdc9322d7742c1c3ac
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SHA512
946aa386059334a5a77d9328ba3ea8c2aa6ec7105628c2eaafe5a9c743fa3922815250b9d56db94c7881a4512277d7b4a81f1b065db4e3262602daf3de7ca11d
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SSDEEP
49152:2vHI22SsaNYfdPBldt698dBcjHnDxNESEEk/iILoGdZTHHB72eh2NT:2vo22SsaNYfdPBldt6+dBcjHDxHm
Malware Config
Extracted
quasar
1.4.1
Office04
tetars.serveftp.com:4040
05b04543-4b6b-454b-8e43-cdb3e2417697
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encryption_key
2768FC420BBDB207C1C2BCB0871CA3A838588A4A
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install_name
Windows File Explorer.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
explorer.exe
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subdirectory
Roaming
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 arch: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: 3KB - Virtual size: 2KB
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