Behavioral task
behavioral1
Sample
16V6R_Client-built.exe
Resource
win7-20240903-en
General
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Target
16V6R_Client-built.exe
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Size
3.1MB
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MD5
1279a35b33d250f9c789300fff0e46fd
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SHA1
74d5a52f02168723cf4c3f2605b82e39e4e43a73
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SHA256
0e56d7032757d15ab4f3e0555dec419bd05a0c06ddde4f215eb8330865dcd583
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SHA512
3fb100a5438e4222477d18896fd2c7be2e5e364e4cecedd05fdf56fc1bf685a49d2aa6f2e7895a2b636e25a1bc87dd1ff1ecb38d60292786eb425cdf67524986
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SSDEEP
49152:rvPI22SsaNYfdPBldt698dBcjH9BPNLotBjTHHB72eh2NT:rvA22SsaNYfdPBldt6+dBcjHTPF
Malware Config
Extracted
quasar
1.4.1
Office04
138.0.54.91:4782
192.168.3.5:4782
63563c99-67f3-4d20-8c7f-230c3d970b36
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encryption_key
E22572FBAE45F5F894074ED475A27E306499B335
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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
Microsoft Link
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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 16V6R_Client-built.exe
Files
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16V6R_Client-built.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: 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