Behavioral task
behavioral1
Sample
stub.exe
Resource
win7-20240704-en
General
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Target
stub.exe
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Size
53.7MB
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MD5
87801d59746d14ff084ebcc942c397a3
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SHA1
91e0230cd2d5c230965627775b2c165911b53ed3
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SHA256
8393bd6d940551af47eaf07dd2b223622e422daaf4388aeaf34099fca736b2bf
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SHA512
cdcfbf568cdcb869d060e844137fb1e54a8ae30f51f23df3a47ccf76992f668cf1518ce74990a5fbf7d055fbd5f0fedb4c25b8d0a67087a998772aa541f92be9
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SSDEEP
1572864:N5q2Edpp1DAdFV+rkBg7DcO3ZOzsUsVHiphQMl+9MlxE0mhxAb:LgppGgP1IzsfVyQA+E3
Malware Config
Extracted
quasar
1.4.1
Office04
147.185.221.20:9835
147.185.221.20:18563
da84adab-a321-4164-9473-73ad56cb4ed3
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encryption_key
99DD896C463A5DEFC60E5185D43A6893ACB75CFB
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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 stub.exe
Files
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stub.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: 53.7MB - Virtual size: 53.7MB
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