Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20241007-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
561c555a80fd370ed996b1bead40d956
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SHA1
7cf29af6c68a5de2a4c4930d633da6a6979ce5bd
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SHA256
62b05b2d5f049bbb9aa265e486244014fa58ed1927a217541eb85c4854b9f196
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SHA512
d97bd8155589a2e0d40f35bb0db0ed4dfd36eb71853f1caed179b09a3a4fb7ed4a93295d460df4fca6def810f3c48adf25ad11eb336ecec2177a0836964d4e42
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SSDEEP
49152:Av9I22SsaNYfdPBldt698dBcjHdj/IE2Hvk/uVvoGd3THHB72eh2NT:AvW22SsaNYfdPBldt6+dBcjHdj/Ip
Malware Config
Extracted
quasar
1.4.1
Client-1
Alessandrolol66-30592.portmap.host:30592
eb93b211-6b0e-4531-80d2-190c51cf72b8
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encryption_key
B11D992865826F9FDFE1488DBCF3B1031C9ED9CB
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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
Windows.Sys
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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