Behavioral task
behavioral1
Sample
nbothjkd.exe
Resource
win7-20240903-en
General
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Target
nbothjkd.exe
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Size
288KB
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MD5
42f1ecb6f9e2f73bb66e84e5f8ca4fb4
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SHA1
51aa8b14ec657171aab0dd13fb87c8e915073d08
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SHA256
2a700406a42a06541dfee93faa1079b51c7a899e3cffcbc31390473852d7e5cc
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SHA512
207162c793e58d702f9474cdfbc4738eaec2e23ad66636a706ad7f8de4f82ae136dc884d5c6f9acb35f3370c8402bd9e3d5572063def33d469b2398e0ac4c398
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SSDEEP
6144:l7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbkFn:9lJtTF9zVGkllbkZ
Malware Config
Extracted
quasar
1.4.0.0
Office
45.136.51.217:5173
fJtDNXkZg2XmnSxFi9
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encryption_key
7Ds8HmxRNTT7TqM6R6Sm
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install_name
csrss.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
NET framework
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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 nbothjkd.exe
Files
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nbothjkd.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: 285KB - Virtual size: 285KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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