Behavioral task
behavioral1
Sample
bfaa90c6e3aacd9d9b83a4f8f0f74b0a.exe
Resource
win7-20220414-en
General
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Target
bfaa90c6e3aacd9d9b83a4f8f0f74b0a
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Size
534KB
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MD5
bfaa90c6e3aacd9d9b83a4f8f0f74b0a
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SHA1
85cc249e2cbf60761fb6de586a442bfc81052e36
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SHA256
6d00a6b8d581813e8af3114968274f89978b40d400c8eef2bf7e09192f5ec9e6
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SHA512
29d83e5f0e82f94c75874c382dc0c002ed90627b8441066c2dc2575ec1f6aff3973bc72915b767d5e54688da6043a3bcd294d26445d865462a11ddb88f0912a5
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SSDEEP
6144:p8fG/JngzxsoIasFzFMkbVsV3mhAcyX9ji0RETbASNC1GZH5OL8RC1GquZ92Gy3w:XkxfIayFMssV3mF0REBC1oI1GquZ97T
Malware Config
Extracted
quasar
2.1.0.0
Office04
127.0.0.1:4782
VNM_MUTEX_c2q7y2ayYutZ2XaYe7
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encryption_key
NTih4UsOfv91J9azm70k
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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
Venom Client Startup
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subdirectory
SubDir
Signatures
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Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule sample disable_win_def -
Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar
Files
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bfaa90c6e3aacd9d9b83a4f8f0f74b0a.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: 531KB - Virtual size: 531KB
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