Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
d7422e5c1eaebc9c074da643c5068596
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SHA1
67a4cfe2f762cc3b9e1026c930b67f372550c15e
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SHA256
4b44ef792c0f5e3ca9a0b338928e99112c38e62df9bbe6e73a94117aa280f3e2
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SHA512
6f74182a8694ab02c6891a77734fc2c6c058b39ca6e039a9d6e9a882ab5362c3d652db3a976c6838c7e878fd8317df3908c1717c0723b0d31a1cd6ee9a7dabc8
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SSDEEP
49152:yvbe821/aQWl8P0lSk3aKA3Z+2Sonn6IFRbFefTHHB72eh2NT:yv6821/aQWl8P0lSk3DA3Z+2SonX2
Malware Config
Extracted
quasar
1.4.1
Office04
notthesigma-29912.portmap.host:4782
notthesigma-29912.portmap.host:29912
17e68276-ae79-40ef-9fa4-7fb92f7cf467
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encryption_key
CCA2584ABCDBA5F8D87224CC2C1DF3D2471F4A7E
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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