Analysis
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max time kernel
199s -
max time network
211s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 21:40
Static task
static1
Behavioral task
behavioral1
Sample
fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe
Resource
win7-20220901-en
General
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Target
fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe
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Size
2.1MB
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MD5
9ef745b31616853ef3713c9a5d2a8dc9
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SHA1
2cab0a3d069540f2303540bcca74b695f8261498
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SHA256
fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63
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SHA512
41a150ff1955bc480655eaccc4a8191648ffea7705e254aa013e13d7eaf4dd9c0c66eba2077ac54f341c70e83f89b0f82b01dcc885913d11dd40d083b0d8f8a3
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SSDEEP
49152:cOTM9xckTjSTMq6ihYIB7F3KLsQAG5cy6:cr9xnVPfIB7sXcy6
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 176 is-J28TL.tmp 3448 PrintFolders.exe 3512 Iihoe.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 176 is-J28TL.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-115NH.tmp is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\is-6EVOH.tmp is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\is-H6DLI.tmp is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\is-54VKQ.tmp is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\is-TRIHR.tmp is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\is-8SBLK.tmp is-J28TL.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-J28TL.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-J28TL.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-J28TL.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
pid Process 2176 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3448 PrintFolders.exe 3448 PrintFolders.exe 3448 PrintFolders.exe 3448 PrintFolders.exe 3448 PrintFolders.exe 3448 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3448 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2176 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 3784 wrote to memory of 176 3784 fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe 85 PID 3784 wrote to memory of 176 3784 fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe 85 PID 3784 wrote to memory of 176 3784 fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe 85 PID 176 wrote to memory of 3448 176 is-J28TL.tmp 86 PID 176 wrote to memory of 3448 176 is-J28TL.tmp 86 PID 176 wrote to memory of 3448 176 is-J28TL.tmp 86 PID 3448 wrote to memory of 3512 3448 PrintFolders.exe 87 PID 3448 wrote to memory of 3512 3448 PrintFolders.exe 87 PID 3448 wrote to memory of 3512 3448 PrintFolders.exe 87 PID 3448 wrote to memory of 4136 3448 PrintFolders.exe 101 PID 3448 wrote to memory of 4136 3448 PrintFolders.exe 101 PID 3448 wrote to memory of 4136 3448 PrintFolders.exe 101 PID 4136 wrote to memory of 2176 4136 cmd.exe 103 PID 4136 wrote to memory of 2176 4136 cmd.exe 103 PID 4136 wrote to memory of 2176 4136 cmd.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe"C:\Users\Admin\AppData\Local\Temp\fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3784 -
C:\Users\Admin\AppData\Local\Temp\is-911GO.tmp\is-J28TL.tmp"C:\Users\Admin\AppData\Local\Temp\is-911GO.tmp\is-J28TL.tmp" /SL4 $A0068 "C:\Users\Admin\AppData\Local\Temp\fd0582c14332762492487fb3a1129a50cc7ab8f2f84a089c91c298f65d027c63.exe" 1923866 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:176 -
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3448 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\Iihoe.exe4⤵
- Executes dropped EXE
PID:3512
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2176
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD54f1d5dd457f536c9b9b5657cca74fab9
SHA1245630de3ea81359ad35a5147f2dc26c24a99f44
SHA256111454367de70507aaa12cb4921c48a19535ccf8512dcfd8ded652e5f3512d00
SHA5127218f9add47f8ca3a99b5eb603d883535196c239509cdfd91aa25b8ad76185749eb43ce20ac30d9b9977136cf37fc68d31d25a05503313cb57d109b911f226fa
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Filesize
3.2MB
MD54f1d5dd457f536c9b9b5657cca74fab9
SHA1245630de3ea81359ad35a5147f2dc26c24a99f44
SHA256111454367de70507aaa12cb4921c48a19535ccf8512dcfd8ded652e5f3512d00
SHA5127218f9add47f8ca3a99b5eb603d883535196c239509cdfd91aa25b8ad76185749eb43ce20ac30d9b9977136cf37fc68d31d25a05503313cb57d109b911f226fa
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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
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c