Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20241007-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
7dbac71bcc7920b66e8c4fc04fbc30dd
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SHA1
c746b4358c2a15765a010c1890979239f152d6f7
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SHA256
ccb74c64a45f838a6e7403d976d9b2d82afe40d96dc08952e6a374d8af3f09dd
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SHA512
56ffa2c92d97ef6b247db44225f659d8894f0c4c1134a8376346eb8f0a36bbb3331803752b8e24ada28dc554ef14d2098627ae751152b9eba956bb5e4d7c0c24
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SSDEEP
49152:bvylL26AaNeWgPhlmVqvMQ7XSKB4RJ6kbR3LoGdXdTHHB72eh2NT:bvqL26AaNeWgPhlmVqkQ7XSKB4RJ6uH
Malware Config
Extracted
quasar
1.4.1
Office04
hojex31104-23437.portmap.host:23437
de505f8f-b6d9-44cb-b9ce-7e2f491eb29e
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encryption_key
D9C52C486698B9297B9AC8B87A65EA67135BE386
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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
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