Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20230220-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
59821db4fc3efdd9d78185a16efa5917
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SHA1
9a53b49c3e42a83e6833c0da4107bae862b4d6b9
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SHA256
a5d114be9a4e5f601a6d855b25b7e206d60f55f9a605ad1c8ebafd964fa1ed70
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SHA512
d3d0f978a50edbe669b68ece5ba183b75bcfa701185370682227501daf643ee08fa22f7e540f00c604459f986b73e11601401c11ed48b8f50ed5fe848af4fd29
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SSDEEP
49152:0v/t62XlaSFNWPjljiFa2RoUYI+ZyP+vEVTHHB72eh2NT:0vV62XlaSFNWPjljiFXRoUYI+Zi
Malware Config
Extracted
quasar
1.4.1
Bob681
181.215.176.73:59955
4a19a6ac-9ac6-4cbd-ab2f-1e469ebe93aa
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encryption_key
01A024E271E79DC5F555EC503C0E2AB6090246F2
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install_name
repl.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
replstart
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subdirectory
repl
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-built.exe
Files
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Client-built.exe.exe 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: 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