Behavioral task
behavioral1
Sample
uac.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
uac.exe
Resource
win10v2004-20230220-en
General
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Target
uac.exe
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Size
3.1MB
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MD5
e63d1cf98aea7e0c5cc065f0440c2302
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SHA1
725eba5865333411427c4d4982d0fb3b67a7abe5
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SHA256
97220df24082531400482d4e55cac0cc62fb04e3cde49b85a188e14b09ae43a0
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SHA512
0a5c3857b41b5008ed2cf3414194bbf9a2ed45dc71094125c7993b8f50effce6484f24d3afcc0f073e47b628cd17946fefa2120274004e8fc073023f6377dfa2
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SSDEEP
49152:3v3I22SsaNYfdPBldt698dBcjHnWUPR4oGdrMTHHB72eh2NT:3v422SsaNYfdPBldt6+dBcjHnWUPW7
Malware Config
Extracted
quasar
1.4.1
Discord Updater
34.95.169.39:9000
microsotf.ddns.net:9000
22bc5714-c575-411a-b7a5-56b481508a31
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encryption_key
DD11DD94FCA2BC6D9E7164A7520569590E885EE8
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install_name
Update.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Updater
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subdirectory
Discord Updater
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 uac.exe
Files
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uac.exe.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: 3.1MB - Virtual size: 3.1MB
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