Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20231023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e56f34305e00cb997a591c9077e4ebe1
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SHA1
bea71b61ece8fa29046f1952d9f75baf88f43a7a
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SHA256
94469bc40535dcd28f994c4a29a5e593a2fa1117a750db14b0e88129c3d6250d
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SHA512
01655aa84608d0058ab62b2279821acc5d1f97025a7bd9a4163f65887bfe7b672dd9a2ee3f7c9ea9b3bd2ca1c735b5575940801262ccf7ba1108cc5e30529fce
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SSDEEP
49152:XvZG42pda6D+/PjlLOlg6yQipVjO+vv5pFoGdJ3THHB72eh2NT:XvI42pda6D+/PjlLOlZyQipVjO+p5
Malware Config
Extracted
quasar
1.4.1
rat-1
108.7.192.244:4577
108.7.192.244:4782
192.168.0.75:4782
cd296cd0-7f5a-4dbd-b508-3f35b007ca39
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encryption_key
864B3509DD8F194F0C8DB4FB3D4AA1ED51B68BAD
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install_name
builder.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Java Runtime Verification
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subdirectory
.minecraft
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