Behavioral task
behavioral1
Sample
1b05c4d74e0d17a983f9b91aa706a7a60f37ec270b7e2433d6798afa1c7be766.exe
Resource
win7-20240903-en
General
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Target
1b05c4d74e0d17a983f9b91aa706a7a60f37ec270b7e2433d6798afa1c7be766.exe
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Size
502KB
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MD5
1441905fc4082ee6055ea39f5875a6c5
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SHA1
78f91f9f9ffe47e5f47e9844bd026d150146744e
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SHA256
1b05c4d74e0d17a983f9b91aa706a7a60f37ec270b7e2433d6798afa1c7be766
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SHA512
70e9ab0e49b4bf89505f16c499538daebc1e8da72488cd63ff60747d15a1d486ba38802b0622c9240d10ff68ab32e6bb36a0b809e7cd0e2ec4945d023ce86c5c
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SSDEEP
12288:gTEgdfYe/iKg3qFE4/ywNFpdrdwzTCcdj:1UwC5F9ywNFpdJ7cdj
Malware Config
Extracted
quasar
1.4.0
Office04
192.168.31.99:4782
2001:4bc9:1f98:a4e::676:4782
255.255.255.0:4782
fe80::cabf:4cff:fe84:9572%17:4782
1f65a787-81b8-4955-95e4-b7751e10cd50
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encryption_key
A0B82A50BBC49EC084E3E53A9E34DF58BD7050B9
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install_name
Java Updater.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Java Updater
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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 1b05c4d74e0d17a983f9b91aa706a7a60f37ec270b7e2433d6798afa1c7be766.exe
Files
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1b05c4d74e0d17a983f9b91aa706a7a60f37ec270b7e2433d6798afa1c7be766.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: 498KB - Virtual size: 498KB
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