Static task
static1
Behavioral task
behavioral1
Sample
288cf51166bb6407c0f13c70a31fefba81ca381bc79dda54af39370ee479d47c.exe
Resource
win7-20220414-en
General
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Target
288cf51166bb6407c0f13c70a31fefba81ca381bc79dda54af39370ee479d47c
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Size
683KB
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MD5
497e3b749e37fa682a0cf5f5ec869296
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SHA1
b6405eb80e48a075489dae999c3291eff5246112
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SHA256
288cf51166bb6407c0f13c70a31fefba81ca381bc79dda54af39370ee479d47c
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SHA512
86d137a1d8dd452c94c42293b2d2c05d3a10c017c2f1f6f18b2ca54c75925fcd0745d5e59e9deb9d533aeaf824a1e727513a2bf852d96c68e2c1f252ce84fd93
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SSDEEP
12288:WjxIhDXIsMxoCQYcFtBZQt8MillfoCEy1T2GRR:W9+IsMxsZ2iloyjR
Malware Config
Extracted
quasar
2.1.0.0
$77systemtelemtry
192.168.0.44:80
67.61.188.107:80
VNM_MUTEX_OplgS6EDrflEgnBXyU
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encryption_key
tfNbPwosWP6IOHXzQKKG
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install_name
windowsrc.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows Registry Handler
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subdirectory
bin
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 Payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Quasar family
Files
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288cf51166bb6407c0f13c70a31fefba81ca381bc79dda54af39370ee479d47c.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: 150KB - Virtual size: 150KB
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