Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
11563580013b8994395ff739dc37ed4a
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SHA1
c527a22166dc153687ca33a8d964687459a6b669
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SHA256
7f5817c430e3906dbf287f92d2f5b140272644d7b2e902d2a343cba51c5bc7e1
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SHA512
4047470a756067ca4a4a038c080039945f37220fba7554ecad5d4912d4ea8611bd5efa5f72bbc7084ecfdbee3d63e8a163b675639572e2b9f21253f4c6e93e59
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SSDEEP
49152:6vRt62XlaSFNWPjljiFa2RoUYIfu83oGNZZpTHHB72eh2NT:6vb62XlaSFNWPjljiFXRoUYIfuC
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.1.70:4782
4cacefbd-58c1-418c-9da0-e646e1e6fc72
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encryption_key
772212B3F3C08D6945CE72024D790AD46DD8341D
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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
defender
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subdirectory
SubDir
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