Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241023-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
2594c80a4d8d3b9c2f93cab60eef17c3
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SHA1
c0f60b85cce551523cccba6c89286b435326b692
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SHA256
ed237426763cff72e5e75aa93dee447e1c78fe91f6c6acf48c76674d2762e1ab
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SHA512
d1caf32394d494e9cba71346f400db2995515ce02e570c7350c123b15dd0bcef8e8368073688929935b9c2516c7ca69c39abbdc1f141b3bba3855ee492b7764e
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SSDEEP
49152:+vaY52fyaSZOrPWluWBuGG5g5hl9C+5wGjBev6oGdU/bTHHB72eh2NT:+vv52fyaSZOrPWluWBDG5g5hbCc
Malware Config
Extracted
quasar
1.4.1
Offset
127.0.0.1:8080
6210ab1d-dd45-4f17-a324-f24c1474c4d8
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encryption_key
CABE6FE0988CAB22AE614AA6065A89402DF1C513
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install_name
svchost.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
conhost
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subdirectory
Windows
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 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