Behavioral task
behavioral1
Sample
Clientbuilt.exe
Resource
win7-20240708-en
General
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Target
Clientbuilt.exe
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Size
3.1MB
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MD5
f661c3060aca2d816f6063c12660ad53
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SHA1
ce967b33af715ba6815b7153dd43f83bbf51059b
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SHA256
bdc6fefc4e36af9201fb64c296778e486a13a2f8a1e9169bc17a4440c3fa60e3
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SHA512
5333f95fbebec663f5508a8eb64d025d9ea8c7cb80e55d721abcca108b8172544c0377abd541a83182c214a538dd53f5ce42fabd5a8f99e2473d403dc0ddfd08
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SSDEEP
49152:8f0IvX+VPughoPAsTUuOtbrdoVZ7rltbxkCHHBX2ehJNTN:8f0IvXMPuoiAsIuOtbZoVZ7R
Malware Config
Extracted
quasar
1.4.1
Office04
actually-saw.gl.at.ply.gg:19706
127.0.0.1:19706
2c3d5585-57b9-4bf4-8dc3-7ba288f28e93
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encryption_key
AB13A35D311D305CC9315C7EBB8FD93DF336A6F6
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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 Clientbuilt.exe
Files
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Clientbuilt.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