General
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Target
ClientC.exe
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Size
3.1MB
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MD5
60283841a32e701810a4f2d92bd992ab
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SHA1
e87d9569a7d037279814a12be25665208071ab91
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SHA256
2ed6f46f965ff50c50cc8414b091745f36d4301e35a7a975bf9f2625b24f8326
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SHA512
4e0ba404eaa0d823d7044f76ae0bbccb78c5d607843b33859a1c5a47f852ff040c86acc02e335f7235d4848f92e2c20f329ea5c898bd7960cc356225f06c4d97
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SSDEEP
49152:yvkt62XlaSFNWPjljiFa2RoUYIPqRJ6vbR3LoGd/qtTHHB72eh2NT:yv462XlaSFNWPjljiFXRoUYIPqRJ6BP
Malware Config
Extracted
quasar
1.4.1
Office04
156.57.236.38:1162
eeb96fcd-c654-4ba2-9a84-d3d5cfa5eee3
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encryption_key
7A857EF3A3EB39AF399F1F3800FB9F842DC83C9E
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
1
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startup_key
InsertDelete
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource ClientC.exe
Files
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ClientC.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