Behavioral task
behavioral1
Sample
38632595e5ebb1ec4ed87327df02ffaf844e49559c2e881cb801f6c1e5026b7d.exe
Resource
win7-20240221-en
General
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Target
38632595e5ebb1ec4ed87327df02ffaf844e49559c2e881cb801f6c1e5026b7d.exe
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Size
348KB
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MD5
9a9ad4c7726dc162e42865008d035a67
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SHA1
4e96beb34472edb52f04d7afbd77199799b3a134
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SHA256
38632595e5ebb1ec4ed87327df02ffaf844e49559c2e881cb801f6c1e5026b7d
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SHA512
6bae0b5d7aa9c748c5fecd2f33443237f49dec10d2d231ec93ca25bd2fdf7737eb0fb5d65d79b4f16ba30e6fff8e4f2d843ed845fa383f5690815b7d36da786e
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SSDEEP
6144:7zNHXf500MpquFq1tnNAjbRDOJX+clr249YSkhp40GRzgSOS:fd50Snu54E46S90GRzXOS
Malware Config
Extracted
quasar
1.3.0.0
Office04
qutz.duckdns.org:4782
QSR_MUTEX_8k92xB7YX3G5daUSZO
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encryption_key
byj4ViyvvQaDXMdNekxD
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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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Detects Windows executables referencing non-Windows User-Agents 1 IoCs
resource yara_rule sample INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
Detects executables containing common artifacts observed in infostealers 1 IoCs
resource yara_rule sample INDICATOR_SUSPICIOUS_GENInfoStealer -
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 38632595e5ebb1ec4ed87327df02ffaf844e49559c2e881cb801f6c1e5026b7d.exe
Files
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38632595e5ebb1ec4ed87327df02ffaf844e49559c2e881cb801f6c1e5026b7d.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: 344KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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