Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Client-built.exe
Resource
win10v2004-20240508-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
d5e34b544737c509d2c715befcf13bbe
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SHA1
d32b3541f63a135cfb4cedda600641d34c4cb1ce
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SHA256
add949efc7c222e2a5c8189a56464384bd116eb05994f85891f1b57ecd570754
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SHA512
5f645abc822994f1615b7aa7c7e4a2dd3dc8c7d977792c82bf891629af65b81836d2c80268edcd2f80f798806744bfa09f6b2a08950d7c4e892e8ddc3a80e4e8
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SSDEEP
49152:rvHI22SsaNYfdPBldt698dBcjHnBhETidKoGdVvTHHB72eh2NT:rvo22SsaNYfdPBldt6+dBcjHnB6Tis
Malware Config
Extracted
quasar
1.4.1
Runtime Broker
192.168.100.7:4449
25995a9e-6e08-4214-8fe6-1aa44dc5c1d2
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encryption_key
B34E98F6CCC5FEAE5629334642BF27F516AF7D4F
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install_name
Runtime Broker.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Runtime Broker
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subdirectory
SubDir
Signatures
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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 Client-built.exe
Files
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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