Analysis
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max time kernel
139s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
28-06-2024 03:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe
Resource
win7-20240508-en
General
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Target
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe
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Size
1.9MB
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MD5
15580dae4a38e0ee4581c1cb3b1d98eb
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SHA1
493a4b1a0207ea640efed703e4680ca4a73dfab9
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SHA256
859e715607c56783ca86527dc6e6696d741030b10d9c17a911ddf933d6ebe4ac
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SHA512
712a4ff9c0d401c757c162cf91094fc5e977e3183cce364415823fe78f44e83d0e128730f25d2fcfae3319148118c0512d4fbc5b6fd608a3677b957209132ebd
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SSDEEP
24576:SbgHrheVS3QUa4EbvAH8MeRaW8OF+91iYv4Y22cMUrRnZlRvdseSb1WS8b7zF61A:SOeQQr4EbvdQOQiYvku23rsZWS8b7ZX
Malware Config
Extracted
asyncrat
Default
allay.f3322.net:5050
fgidvwdtbfcdtau
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delay
1
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install
true
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install_file
WriteFile.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
Processes:
resource yara_rule C:\Client.exe family_asyncrat -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exeClient.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation Client.exe -
Executes dropped EXE 2 IoCs
Processes:
Client.exeWriteFile.exepid process 4864 Client.exe 4240 WriteFile.exe -
Processes:
resource yara_rule behavioral2/memory/4344-0-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-36-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-42-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-45-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-40-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-38-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-34-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-32-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-30-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-28-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-26-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-24-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-23-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-21-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-18-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-16-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-14-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-12-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-10-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-8-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-6-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-4-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-43-0x0000000068CD0000-0x0000000068CDF000-memory.dmp upx behavioral2/memory/4344-1-0x0000000010000000-0x000000001003C000-memory.dmp upx behavioral2/memory/4344-2-0x0000000010000000-0x000000001003C000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3432 4344 WerFault.exe 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1336 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 46 IoCs
Processes:
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exeClient.exeWriteFile.exepid process 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4864 Client.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe 4240 WriteFile.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Client.exeWriteFile.exedescription pid process Token: SeDebugPrivilege 4864 Client.exe Token: SeDebugPrivilege 4240 WriteFile.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exeWriteFile.exepid process 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe 4240 WriteFile.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exeClient.execmd.execmd.exedescription pid process target process PID 4344 wrote to memory of 4864 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe Client.exe PID 4344 wrote to memory of 4864 4344 2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe Client.exe PID 4864 wrote to memory of 4016 4864 Client.exe cmd.exe PID 4864 wrote to memory of 4016 4864 Client.exe cmd.exe PID 4864 wrote to memory of 3700 4864 Client.exe cmd.exe PID 4864 wrote to memory of 3700 4864 Client.exe cmd.exe PID 4016 wrote to memory of 1456 4016 cmd.exe schtasks.exe PID 4016 wrote to memory of 1456 4016 cmd.exe schtasks.exe PID 3700 wrote to memory of 1336 3700 cmd.exe timeout.exe PID 3700 wrote to memory of 1336 3700 cmd.exe timeout.exe PID 3700 wrote to memory of 4240 3700 cmd.exe WriteFile.exe PID 3700 wrote to memory of 4240 3700 cmd.exe WriteFile.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-28_15580dae4a38e0ee4581c1cb3b1d98eb_asyncrat_icedid.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4344 -
C:\Client.exe"C:\Client.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4864 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WriteFile" /tr '"C:\Users\Admin\AppData\Roaming\WriteFile.exe"' & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4016 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "WriteFile" /tr '"C:\Users\Admin\AppData\Roaming\WriteFile.exe"'4⤵
- Scheduled Task/Job: Scheduled Task
PID:1456 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7782.tmp.bat""3⤵
- Suspicious use of WriteProcessMemory
PID:3700 -
C:\Windows\system32\timeout.exetimeout 34⤵
- Delays execution with timeout.exe
PID:1336 -
C:\Users\Admin\AppData\Roaming\WriteFile.exe"C:\Users\Admin\AppData\Roaming\WriteFile.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4240 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 17442⤵
- Program crash
PID:3432
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4344 -ip 43441⤵PID:2004
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
74KB
MD591b01e99b841549fb21482b956ac78cf
SHA182d240f2c2ae343f4d7c6fd37af7e41374935a5f
SHA2566036f85e4763107b83190d95294b87202d451a2548f4b90cc862ea81f269c0db
SHA51210acfdd4d14ca93b2b05932b16b4940afff020aa18f6ded0799749e0f793f8fc94874cf5e55fb2acf041e233cc0bedcc272cadfbb5d4516f9abdcd6ef18d9b0a
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Filesize
153B
MD549ca141bbe17a503b7ed5da2f7e9898c
SHA12e11c6b1c06ae2858e32591922723c997b8557f1
SHA256576e281ba36a661f7c66d09594729de680f3de83705047cbe1fe22a0b4b9c213
SHA51228bed7fb5a191c01fc7c8c67b7d04acb8b95fd279dd79385f0d4cfd33d30033062c8d73127bcae1f44752cd846d3854fca6787184acbafc3910453c64f9dabc5
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Filesize
8B
MD5cf759e4c5f14fe3eec41b87ed756cea8
SHA1c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b