Analysis
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max time kernel
167s -
max time network
186s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 04:02
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
3.4MB
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MD5
c49a576495040b18d27862da45f5000a
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SHA1
f26b1c69d80b87d77b0bbca2e36217f4dbb2f877
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SHA256
316a5510faefd6e239e568c4939dad3f229bcc1aa91fbd39076f6014f4cbcea8
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SHA512
b00fc6efab9823eae7bec7c676a5d05265fd7a0af4bd743708e8a74d391684ae4f7aacd9357d360e46bae686dfbcfc4562af3b2de8f11461bbcd30eae41f0b01
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SSDEEP
98304:IZCuoFGuHONeWPYN4Bdv91wi+2dnY6UScWGIV062jOSIXcyQ:kCuopuNeWY8F1wDooSc1Iq62jOvXcyQ
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3904 is-8TRTG.tmp 5096 PrintFolders.exe 5052 IL4Bwy7.exe -
Loads dropped DLL 1 IoCs
pid Process 3904 is-8TRTG.tmp -
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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Drops file in Program Files directory 9 IoCs
description ioc Process File created C:\Program Files (x86)\PrintFolders\is-LIHA0.tmp is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\is-7LPQ4.tmp is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\is-1QTK0.tmp is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\is-PDN3L.tmp is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\is-LTIRK.tmp is-8TRTG.tmp File created C:\Program Files (x86)\PrintFolders\is-FVUP6.tmp is-8TRTG.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-8TRTG.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-8TRTG.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 5096 PrintFolders.exe 5096 PrintFolders.exe 5096 PrintFolders.exe 5096 PrintFolders.exe 5096 PrintFolders.exe 5096 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 5096 PrintFolders.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 728 wrote to memory of 3904 728 file.exe 79 PID 728 wrote to memory of 3904 728 file.exe 79 PID 728 wrote to memory of 3904 728 file.exe 79 PID 3904 wrote to memory of 5096 3904 is-8TRTG.tmp 81 PID 3904 wrote to memory of 5096 3904 is-8TRTG.tmp 81 PID 3904 wrote to memory of 5096 3904 is-8TRTG.tmp 81 PID 5096 wrote to memory of 5052 5096 PrintFolders.exe 82 PID 5096 wrote to memory of 5052 5096 PrintFolders.exe 82 PID 5096 wrote to memory of 5052 5096 PrintFolders.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:728 -
C:\Users\Admin\AppData\Local\Temp\is-9VO7O.tmp\is-8TRTG.tmp"C:\Users\Admin\AppData\Local\Temp\is-9VO7O.tmp\is-8TRTG.tmp" /SL4 $8005A "C:\Users\Admin\AppData\Local\Temp\file.exe" 3367985 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3904 -
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:5096 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\IL4Bwy7.exe4⤵
- Executes dropped EXE
PID:5052
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
5.8MB
MD5a07392b552114f6a6751e2263af7d3e4
SHA189397318bfc85f6d4f0e74ae2e54ff4ea798d6c7
SHA25653209af830e53207e79196cd35c7fb75d6728cba09df12f1d081c3615d1196c4
SHA51210f2345d0ebafde22b2b69686efcb135178bef872f51f59f98afa22d2de783ede8397ca8d8523d1e0994bcd9636ffcbe12a21b3f2c2352c525a873ac15027885
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Filesize
5.8MB
MD5a07392b552114f6a6751e2263af7d3e4
SHA189397318bfc85f6d4f0e74ae2e54ff4ea798d6c7
SHA25653209af830e53207e79196cd35c7fb75d6728cba09df12f1d081c3615d1196c4
SHA51210f2345d0ebafde22b2b69686efcb135178bef872f51f59f98afa22d2de783ede8397ca8d8523d1e0994bcd9636ffcbe12a21b3f2c2352c525a873ac15027885
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
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Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c