Behavioral task
behavioral1
Sample
Client.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Client.exe
Resource
win10v2004-20240412-en
General
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Target
Client.exe
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Size
3.1MB
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MD5
1109da1db2b4175b38ae1bc7c881db9a
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SHA1
02b92b5e6aa54ae040bc5cd5e845287be01c9562
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SHA256
0aadcb147077d657fd68e222689a25d93c40144d54922c83b4171a5e801235c5
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SHA512
44cc1ee0e92159f4d41b4b1c9ae52a7b208b7888c5864795f1e815725d26677e2c7f4fce6410a8cfa8e07c8ee19c3f07f4110c64f1eca62d2f6bbf4cdda8f952
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SSDEEP
49152:rvbI22SsaNYfdPBldt698dBcjHRTaxzBxL9aGdg6STHHB72eh2NT:rvk22SsaNYfdPBldt6+dBcjHRTaxh
Malware Config
Extracted
quasar
1.4.1
Office04
140.238.91.110:34309
d748a36c-8402-4813-815d-0daea2ec5f51
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encryption_key
312796590553474EC6AA07D7A09E6A1B8FA1043A
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install_name
dllhostx64.exe
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log_directory
Error Logs
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reconnect_delay
3000
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startup_key
Windows Boot Menu
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subdirectory
Windows
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client.exe
Files
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Client.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