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
9cd0c80ad619579b83e16f7afebf98b2
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SHA1
e19f404fe2b5f2fa57af674c2993009ae13e29f8
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SHA256
35cdd06575489ef146d2851a906eb542cddbfb9c94fd31b703dfee4944d8e36f
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SHA512
fb2613be8e367893386497b1ee3aa52c608f0c9c539c0e0ac6738cb4333301ca3f6bbb63fbf2ea60d54884a7fce624e1ec9ecc0c70ed0fc114da2254cb05bc48
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SSDEEP
49152:/v3lL26AaNeWgPhlmVqvMQ7XSKIrRJ6dbR3LoGdm0THHB72eh2NT:/v1L26AaNeWgPhlmVqkQ7XSKIrRJ6vW
Malware Config
Extracted
quasar
1.4.1
Office04
abc248597df-25592.portmap.host:25592:25592
837d4201-7565-459a-ad6a-d5ef54fa537b
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encryption_key
A896862809BEA850DB21D754E127B53DD347664D
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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