Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230915-en
General
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Target
tmp
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Size
531KB
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MD5
65cbf0896dbc7b241814c0225a55d6a6
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SHA1
f71bff99073559dd1cb2adf93248474c46dc4c9d
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SHA256
02ff0d6df526caf621b34922b2b981962833aad1e75ad03bc47f764346217970
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SHA512
3fff64581ef76fc3d308f48698e83a7b6031af4a3ef70b0ffeef89d21e8b40a180c0a2e5ae839596fd12b3541ed048b7af836190d74d0226ca42fbabfa908ae3
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SSDEEP
6144:yKIDkAT6QSkszJqqqtEwg+Bmzsbz5EGmfcUVEzro/vgufw0FURLpFc:96iksaEwva+kc6Ezro/vgQw0SRLpFc
Malware Config
Extracted
quasar
1.3.0.0
Mozilla Services
46.13.89.41:9999
QSR_MUTEX_moG8N7bq9y7AOdVqVp
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encryption_key
6Fx0hF8cd4f7yUw8UpN2
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install_name
Mozilla Services.exe
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log_directory
cache
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reconnect_delay
200
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startup_key
Mozilla Services
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subdirectory
Mozilla API
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 tmp
Files
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tmp.exe windows 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: 345KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 185KB - Virtual size: 185KB
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