Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
General
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Target
tmp
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Size
916KB
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MD5
1531ddf6b03ab9f7b0c46381210d82ca
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SHA1
53f1566838a6e380e6f83e256ab7aac1e028f39f
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SHA256
f5ec9c818e5d515558f479915c1de23c803c55637825c6e8199760180bab866e
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SHA512
4ea19ccdccfc6532f9a71731df3766cc785d44e8cfabccb624cd99aae14efcb0c2925c9143b699fc6bc7f036c74d41ee476f56df247004a871d006d5e9f5d51e
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SSDEEP
24576:ZVWC4MROxnFD3kw8XlrrcI0AilFEvxHPMrooG:ZqMiJorrcI0AilFEvxHP
Malware Config
Extracted
orcus
84.21.172.55:1339
5e29a9dc07244cd5b38b6e685c293580
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autostart_method
TaskScheduler
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enable_keylogger
false
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install_path
%programfiles%\Chrome\ChromeUpdateService.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
SmarterScreen
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watchdog_path
AppData\WindowsToolKit.exe
Signatures
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Orcurs Rat Executable 1 IoCs
resource yara_rule sample orcus -
Orcus family
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Orcus main payload 1 IoCs
resource yara_rule sample family_orcus -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource tmp
Files
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tmp.exe windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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: 911KB - Virtual size: 910KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 4KB - Virtual size: 4KB
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