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Analysis
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max time kernel
72s -
max time network
73s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
19/06/2022, 20:46
Static task
static1
Behavioral task
behavioral1
Sample
d946c183fd128b4acf88d83ee89d79d3.exe
Resource
win7-20220414-en
General
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Target
d946c183fd128b4acf88d83ee89d79d3.exe
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Size
772KB
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MD5
d946c183fd128b4acf88d83ee89d79d3
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SHA1
6f35da72f339c7101e93a7adada27d24902db598
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SHA256
529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474
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SHA512
793727b08b92df108144308a7ac798e55ba35742308db18466cce6caa564b6c1cb5b0fece2850511450f69e497df1dba49a9cb3a0ff17b4f9cc27e05ef2fcd62
Malware Config
Extracted
arkei
Default
Extracted
recordbreaker
http://136.244.65.99/
http://140.82.52.55/
Signatures
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RecordBreaker
RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.
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suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
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suricata: ET MALWARE Generic Stealer Config Download Request
suricata: ET MALWARE Generic Stealer Config Download Request
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suricata: ET MALWARE Recordbreaker Stealer CnC Checkin
suricata: ET MALWARE Recordbreaker Stealer CnC Checkin
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suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
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suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
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Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
pid Process 280 fcvtee.exe 1108 fcvtee.exe -
Loads dropped DLL 7 IoCs
pid Process 1640 d946c183fd128b4acf88d83ee89d79d3.exe 1640 d946c183fd128b4acf88d83ee89d79d3.exe 1108 fcvtee.exe 1108 fcvtee.exe 952 d946c183fd128b4acf88d83ee89d79d3.exe 952 d946c183fd128b4acf88d83ee89d79d3.exe 952 d946c183fd128b4acf88d83ee89d79d3.exe -
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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 280 set thread context of 1108 280 fcvtee.exe 29 PID 1640 set thread context of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 fcvtee.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString fcvtee.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1536 timeout.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 280 fcvtee.exe 1640 d946c183fd128b4acf88d83ee89d79d3.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1640 d946c183fd128b4acf88d83ee89d79d3.exe 280 fcvtee.exe -
Suspicious use of WriteProcessMemory 22 IoCs
description pid Process procid_target PID 1640 wrote to memory of 280 1640 d946c183fd128b4acf88d83ee89d79d3.exe 27 PID 1640 wrote to memory of 280 1640 d946c183fd128b4acf88d83ee89d79d3.exe 27 PID 1640 wrote to memory of 280 1640 d946c183fd128b4acf88d83ee89d79d3.exe 27 PID 1640 wrote to memory of 280 1640 d946c183fd128b4acf88d83ee89d79d3.exe 27 PID 280 wrote to memory of 1108 280 fcvtee.exe 29 PID 280 wrote to memory of 1108 280 fcvtee.exe 29 PID 280 wrote to memory of 1108 280 fcvtee.exe 29 PID 280 wrote to memory of 1108 280 fcvtee.exe 29 PID 280 wrote to memory of 1108 280 fcvtee.exe 29 PID 1640 wrote to memory of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 PID 1640 wrote to memory of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 PID 1640 wrote to memory of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 PID 1640 wrote to memory of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 PID 1640 wrote to memory of 952 1640 d946c183fd128b4acf88d83ee89d79d3.exe 28 PID 1108 wrote to memory of 1864 1108 fcvtee.exe 33 PID 1108 wrote to memory of 1864 1108 fcvtee.exe 33 PID 1108 wrote to memory of 1864 1108 fcvtee.exe 33 PID 1108 wrote to memory of 1864 1108 fcvtee.exe 33 PID 1864 wrote to memory of 1536 1864 cmd.exe 35 PID 1864 wrote to memory of 1536 1864 cmd.exe 35 PID 1864 wrote to memory of 1536 1864 cmd.exe 35 PID 1864 wrote to memory of 1536 1864 cmd.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1640 -
C:\Users\Admin\AppData\Roaming\fcvtee.exe"C:\Users\Admin\AppData\Roaming\fcvtee.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:280 -
C:\Users\Admin\AppData\Roaming\fcvtee.exe"C:\Users\Admin\AppData\Roaming\fcvtee.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Roaming\fcvtee.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\timeout.exetimeout /t 55⤵
- Delays execution with timeout.exe
PID:1536
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C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"2⤵
- Loads dropped DLL
PID:952
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
392KB
MD532ab5685131d8bcfa172bf165adf9338
SHA15e3b167bc66a15c246a8f29f7b634cbe52731319
SHA2562a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e
SHA512c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437
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Filesize
392KB
MD532ab5685131d8bcfa172bf165adf9338
SHA15e3b167bc66a15c246a8f29f7b634cbe52731319
SHA2562a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e
SHA512c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437
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Filesize
392KB
MD532ab5685131d8bcfa172bf165adf9338
SHA15e3b167bc66a15c246a8f29f7b634cbe52731319
SHA2562a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e
SHA512c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437
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Filesize
133KB
MD58f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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Filesize
1.2MB
MD5bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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Filesize
612KB
MD5f07d9977430e762b563eaadc2b94bbfa
SHA1da0a05b2b8d269fb73558dfcf0ed5c167f6d3877
SHA2564191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862
SHA5126afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf
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Filesize
1.9MB
MD5f67d08e8c02574cbc2f1122c53bfb976
SHA16522992957e7e4d074947cad63189f308a80fcf2
SHA256c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e
SHA5122e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5
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Filesize
1.0MB
MD5dbf4f8dcefb8056dc6bae4b67ff810ce
SHA1bbac1dd8a07c6069415c04b62747d794736d0689
SHA25647b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68
SHA512b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1
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Filesize
392KB
MD532ab5685131d8bcfa172bf165adf9338
SHA15e3b167bc66a15c246a8f29f7b634cbe52731319
SHA2562a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e
SHA512c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437
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Filesize
392KB
MD532ab5685131d8bcfa172bf165adf9338
SHA15e3b167bc66a15c246a8f29f7b634cbe52731319
SHA2562a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e
SHA512c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437