Behavioral task
behavioral1
Sample
$77-Venom.exe
Resource
win7-20231129-en
General
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Target
$77-Venom.exe
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Size
534KB
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MD5
ac2e0dc8d409951c34e10105738c0819
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SHA1
644f9ecf7dd774bcf0ebd551344866f3311b4ddb
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SHA256
f2d6e1e9007b693c4ef5b7a8ee56c4bf24594620a43c16d752fe79dc60132270
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SHA512
a0c2c24375db71dd7617f52c24824f760a80a9a2e77fe0f3bcc1518fbf0cefc11e41aa9af65231e9bb1d1d91a0653aefb1bb650e701922152fc8844f0b56535a
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SSDEEP
12288:0kxfIayFM+jJ2vemr+mf7B+yVkzFBtFET:0wPyFMyEr+mFzyFs
Malware Config
Extracted
quasar
2.1.0.0
mariojudah
127.0.0.1:4782
VNM_MUTEX_a2Jk7sW9n0PjTmaEMn
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encryption_key
1zzvalSEUSRsWGZTAdB5
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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 -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource $77-Venom.exe
Files
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$77-Venom.exe.exe windows:4 windows x86 arch:x86
Password: infected
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