Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240220-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
43d43e073f37fcbce4db2a8efea58450
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SHA1
24014a045dfda1401b81e63435fdf46963967fd4
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SHA256
e4c6e99ac6e6ddb98b3f0fea20d97c067b593ffdce6d2909ff693d03868e605b
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SHA512
9c8ca9dee9c24431ea98ce9743cf826b5ba844c339b0cc94ef4261af68f2bf89b7251e1884011e8ff58be5afbebe98b699a243d1cacf83272018baac439ca9bf
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SSDEEP
49152:3v1t62XlaSFNWPjljiFa2RoUYI4xDEDwNk/JxSoGdk+THHB72eh2NT:3vH62XlaSFNWPjljiFXRoUYI4xWQU
Malware Config
Extracted
quasar
1.4.1
Office04
IPv4:4782
865ecc2b-abfd-4e2c-92cb-d87fb0c27dfe
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encryption_key
4EC818ABEB58692E09D25328E09F987FEC20E0DF
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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
Quasar Client Startup
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subdirectory
SubDir
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:4 windows x86 arch:x86
Password: lol
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