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Resubmissions
24/10/2023, 12:00
231024-n6mgdacg4s 1024/10/2023, 11:52
231024-n1sq7see73 1024/10/2023, 11:33
231024-nnxjmace71 1024/10/2023, 11:30
231024-nl9feace6y 1024/10/2023, 11:27
231024-nkf3gace5v 1024/10/2023, 09:15
231024-k73m7sdg27 10Analysis
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max time kernel
150s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20231023-en -
resource tags
arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system -
submitted
24/10/2023, 11:52
Static task
static1
Behavioral task
behavioral1
Sample
rat.exe
Resource
win7-20231023-en
General
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Target
rat.exe
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Size
512KB
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MD5
738c07f22ff7922d8fcff5ba6555dbb3
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SHA1
86a08e0cb6b92b08d358c75e47dd5325b4aba323
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SHA256
7a83115ab46ba6a3c237d78f32bd3386ff4d4d7cd7b06ad731fe8071b2246278
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SHA512
c49a900d0165f56cc513c6e4e6551a69f3b49c8c0a9719ac925c6004b69554540999d1f3c9d63c397564e6ec67bb65cc31fa6e0ff9c2685a325fea7c8c0868dd
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SSDEEP
3072:7HivS2XIxjLnBnbmOKIudTziZ3w2OAGzCZ44Lz/w:LxvnBJh+T63wZzCZ44Lzw
Malware Config
Extracted
asyncrat
1.0.7
Default
DcRatMutex_qwqdanchun
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delay
1
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install
false
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install_file
svchost.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 1 IoCs
resource yara_rule behavioral1/memory/1948-32-0x0000000000690000-0x00000000006A6000-memory.dmp asyncrat -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\system32\perfmon.msc mmc.exe File created C:\Windows\system32\perfc00A.dat WmiApSrv.exe File created C:\Windows\system32\perfh00C.dat WmiApSrv.exe File created C:\Windows\system32\perfc011.dat WmiApSrv.exe File opened for modification C:\Windows\system32\PerfStringBackup.INI WmiApSrv.exe File created C:\Windows\system32\perfh010.dat WmiApSrv.exe File created C:\Windows\system32\perfh011.dat WmiApSrv.exe File created C:\Windows\system32\PerfStringBackup.TMP WmiApSrv.exe File created C:\Windows\system32\wbem\Performance\WmiApRpl_new.h WmiApSrv.exe File opened for modification C:\Windows\system32\wbem\Performance\WmiApRpl_new.ini WmiApSrv.exe File created C:\Windows\system32\perfc007.dat WmiApSrv.exe File created C:\Windows\system32\perfh007.dat WmiApSrv.exe File created C:\Windows\system32\perfh00A.dat WmiApSrv.exe File created C:\Windows\system32\perfc010.dat WmiApSrv.exe File created C:\Windows\system32\perfc009.dat WmiApSrv.exe File created C:\Windows\system32\perfh009.dat WmiApSrv.exe File created C:\Windows\system32\perfc00C.dat WmiApSrv.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\inf\WmiApRpl\WmiApRpl.h WmiApSrv.exe File opened for modification C:\Windows\inf\WmiApRpl\WmiApRpl.h WmiApSrv.exe File created C:\Windows\inf\WmiApRpl\0009\WmiApRpl.ini WmiApSrv.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3618187007-3650799920-3290345941-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch mmc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3618187007-3650799920-3290345941-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" mmc.exe Key created \REGISTRY\USER\S-1-5-21-3618187007-3650799920-3290345941-1000\Software\Microsoft\Internet Explorer\Main mmc.exe -
Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2628 mmc.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: 33 2628 mmc.exe Token: SeIncBasePriorityPrivilege 2628 mmc.exe Token: 33 2628 mmc.exe Token: SeIncBasePriorityPrivilege 2628 mmc.exe Token: SeDebugPrivilege 1948 rat.exe Token: SeDebugPrivilege 1948 rat.exe -
Suspicious use of SetWindowsHookEx 40 IoCs
pid Process 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.exe 2628 mmc.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\rat.exe"C:\Users\Admin\AppData\Local\Temp\rat.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1948
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C:\Windows\system32\mmc.exe"C:\Windows\system32\mmc.exe" "C:\Windows\system32\perfmon.msc" /s1⤵
- Drops file in System32 directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2628
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
- Drops file in System32 directory
- Drops file in Windows directory
PID:2852
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
145KB
MD519c7052de3b7281b4c1c6bfbb543c5dc
SHA1d2e12081a14c1069c89f2cee7357a559c27786e7
SHA25614ed6cb3198e80964cbc687a60aed24fb68d1bbd7588f983dc1fc6ae63514b4a
SHA512289ca791909882c857014bd24e777fa84b533896508b562051b529d4c27e0d98bc41c801c6384b382f5dc0fa584dc8f713939c636543b0a5cf5ea2b396300f83
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Filesize
150KB
MD5540138285295c68de32a419b7d9de687
SHA11cf6a2a0f53f0516ff9fe5ac733dbb5a9255ae56
SHA25633867c52f756f2b0f645f4bd503c65969d73676dcb14e6a6fdb2ffb11c7562eb
SHA5127c17c10d4b6165aa0c208811dc6d98e2f4e75e3da1cc2313cc7da9d657626beb3e4ec00b07b71376a7c549725d40db20d8952753e70acc86e87a8390e224a64a
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Filesize
141KB
MD5831dbe568992299e589143ee8898e131
SHA1737726173aab8b76fe1f98104d72bb91abd273bf
SHA2564f22ef1625fb2a2370779d0992f80b8e5e5da8dc727aa99ade152044d28e9405
SHA51239015d29d593c9df59cdafbff95a6ddc000a5dbf767665b65f8ec65751e70315918c93d3583b922d32e9b6261b8c07023da660098ca79c5420b782c150b5c139
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Filesize
138KB
MD5cf82e7354e591c1408eb2cc0e29dd274
SHA17e91bd50c3e6b64b81e2b5c1ce723f52e34748e9
SHA25659b5e6fbbe68f47db14a3c045b0ac1abb026c626ca4bee708fbd3940e6d2e06d
SHA51298bd4809c1c418be4100096bc9df328d2ad435c5615c082fa2bfa424935203107015862cd9c1737800b7f7bd020fea4538c325707927c1557bc3efebffb27620
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Filesize
114KB
MD51f998386566e5f9b7f11cc79254d1820
SHA1e1da5fe1f305099b94de565d06bc6f36c6794481
SHA2561665d97fb8786b94745295feb616a30c27af84e8a5e1d25cd1bcaf70723040ea
SHA512a7c9702dd5833f4d6d27ce293efb9507948a3b05db350fc9909af6a48bd649c7578f856b4d64d87df451d0efbe202c62da7fffcac03b3fe72c7caaea553de75f
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Filesize
680KB
MD5b69ab3aeddb720d6ef8c05ff88c23b38
SHA1d830c2155159656ed1806c7c66cae2a54a2441fa
SHA25624c81302014118e07ed97eaac0819ecf191e0cc3d69c02b16ecda60ac4718625
SHA5124c7a99d45fb6e90c206439dcdd7cd198870ea5397a6584bb666eed53a8dc36faaac0b9cfc786a3ab4ecbbecc3a4ddd91560246d83b3319f2e37c1ed4bdbec32d
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Filesize
634KB
MD51c678ee06bd02b5d9e4d51c3a4ec2d2b
SHA190aa7fdfaaa37fb4f2edfc8efc3994871087dedb
SHA2562d168ab31836a08d8ca00aab9685f040aac4052a7f10fbbf0c28e9f880a79dd3
SHA512ec665d7a20f27b2a0fe2475883009c6d34615cc2046d096de447ef57bcac9da0ae842be0556f5736f42d9c1c601fb8629896a2444990e508f7c573165088ab32
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Filesize
715KB
MD5340af83514a525c50ffbbf8475ed62b7
SHA1e2f382ae75afe7df8a323320bbb2aafa1ff6e407
SHA256fb298e9a90476b4698def395a8ee1974c1cee3959b658662c730da915caea417
SHA5128236aab579456ef4614ddd5fbfe72d0b0b26617c43a9cd53c3de56d3ac052eee8ca7d70749aaca0692855ecd4fd5f1460ac0b1dd30481dee519b910755c1cc2d
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Filesize
715KB
MD5718bb9564980029a2e3341093a4bb082
SHA18953d96e47b65c2c70f2bcc3d9e2e7c55d41ee61
SHA256ad7b5314ef00ce846ae2c91a32dd1c1f2b4905cf182005e251ad6d4af66cc977
SHA5123f22961d108271dc098ae2c75d217991da38c18a587b44abd74da853ea26d171ca1a507c3200f3b7c2a8175bfff5a8b968a551a4804082064dc6f2ef98b5432d
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Filesize
710KB
MD566fd0e1999023d23c9f8e3cd7a92af77
SHA1e0e61df319ddbc7c9d425612295f825c47888658
SHA256bdbadcf6f408c6d223974d52a69413aebe1d50ac7eaeacefa2beb2f7321355d0
SHA512b8924cdf53eb5589820a16890fa7abdca20dfc3ca44063d3fdaef484f506419dbf9cd660bc80e8dfe7b7eba7d9db8fe0046accc1fca8d3faf70dedfa1ee0e68f
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Filesize
394KB
MD524da30cbb5f0fe4939862880e72cc32c
SHA19132497736f52dae62b79be1677c05e32a7ba2ab
SHA256a11a4228f8485db2f90466651f6cab07245a8ff5b3448636ab0abc4d618a4a1f
SHA512332a57e8f0e8d7f82044f90388afd7509768ecb3f657c6be12d1f51ec1c66b8886c30d4b4a42d3a64c3e0d8b76d7cc86a1ac3b92713a68a62c12fdae6a77d6c2
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Filesize
3KB
MD5b133a676d139032a27de3d9619e70091
SHA11248aa89938a13640252a79113930ede2f26f1fa
SHA256ae2b6236d3eeb4822835714ae9444e5dcd21bc60f7a909f2962c43bc743c7b15
SHA512c6b99e13d854ce7a6874497473614ee4bd81c490802783db1349ab851cd80d1dc06df8c1f6e434aba873a5bbf6125cc64104709064e19a9dc1c66dcde3f898f5
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Filesize
27KB
MD546d08e3a55f007c523ac64dce6dcf478
SHA162edf88697e98d43f32090a2197bead7e7244245
SHA2565b15b1fc32713447c3fbc952a0fb02f1fd78c6f9ac69087bdb240625b0282614
SHA512b1f42e70c0ba866a9ed34eb531dbcbae1a659d7349c1e1a14b18b9e23d8cbd302d8509c6d3a28bc7509dd92e83bcb400201fb5d5a70f613421d81fe649d02e42