Behavioral task
behavioral1
Sample
New folder/AsyncClient.exe
Resource
win11-20240704-en
Behavioral task
behavioral2
Sample
New folder/Build.exe
Resource
win11-20240704-en
Behavioral task
behavioral3
Sample
New folder/Client.exe
Resource
win11-20240704-en
General
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Target
New folder.zip
-
Size
250KB
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MD5
b1294f70ef9488a74e8edfdbb3955b36
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SHA1
8bdd5fa3cb6cc7c2601a7bbdd3a685658bcb533d
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SHA256
d05969d3d15e8a5875f6b19cc8677ac36938390d4e35a1e4d54935e20f7c9de2
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SHA512
c5b6d0db4f0d3b3985356193333852329f4e579e0673810f2947047cff213e99c6a540933d3fbf3acf691e0af01581b7780e3d8eb72cbf18998275f9b6c50108
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SSDEEP
3072:xFCIv4q/OIl+cAWpbMKq29NBAvrNMLmRr75hcFO0iA4NlujhoiJOSlMO+oKbXwHu:TCIgI4ybMuNBSMAh69iriOSb0bgfxF8R
Malware Config
Extracted
asyncrat
0.5.8
Default
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
QdNftpHJFSw4
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
resource yara_rule static1/unpack001/New folder/AsyncClient.exe family_asyncrat -
Asyncrat family
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Unsigned PE 3 IoCs
Checks for missing Authenticode signature.
resource unpack001/New folder/AsyncClient.exe unpack001/New folder/Build.exe unpack001/New folder/Client.exe
Files
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New folder.zip.zip
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New folder/AsyncClient.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: 42KB - Virtual size: 41KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 1KB
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
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New folder/Build.exe.exe windows:4 windows x86 arch: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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 698KB - Virtual size: 698KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
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
-
New folder/Client.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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 53KB - Virtual size: 52KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 1KB
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