Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240215-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
024059893642829fca8b490b2b70bee1
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SHA1
26e819c655f8a3144354a9b10cb600434fca7e2f
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SHA256
d33a6a4caf5019dbd66e482f8d9bfae8c4a6df727cf0efbd2116144513b4bb0b
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SHA512
e1a10b43af81cfd931b1f750bfe2078ef4f7317194a928bb32b46b05467a50815053239cfccc27e5242d7850712170cf6b7065e517e8e237ad3b6a0f3fbebc5f
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SSDEEP
49152:DvbI22SsaNYfdPBldt698dBcjHZBgzM+bRwLoGd6+THHB72eh2NT:Dvk22SsaNYfdPBldt6+dBcjHZBgzM9K
Malware Config
Extracted
quasar
1.4.1
Office04
76.104.23.114:6169
f2706aa1-9bb2-4b53-aa2b-28d4da8c7898
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encryption_key
6275E7CE2675387B9387C0E961B0CB5150149497
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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