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
740d9f35b37dd1557744d0d1df0ae2a6
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SHA1
fe55e2e2dc057298018a0ed7211096de0c014e0e
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SHA256
cc4c02376c24053d287c965105bb92c236bbefea2dcff15cdf1c45b183246a8f
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SHA512
8b7fb45bc4c44245f157225431aea64e8d600ee5441c3e8d0197d2ba366bf7ffc6c9a321323ba704b46f5f104d9f5d645c1f680223d38022605fbf182cf4e0cd
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SSDEEP
49152:HvAG42pda6D+/PjlLOlg6yQipV3eRJ6/bR3LoGdtTHHB72eh2NT:HvD42pda6D+/PjlLOlZyQipV3eRJ6R
Malware Config
Extracted
quasar
1.4.1
Office04
https://stable-notably-hound.ngrok-free.app:4782
59d0faf1-ae3f-4d2f-9c0f-631501d0027c
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encryption_key
A5F0EE2DBE7A3009387617912AFB48C127E2B576
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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