Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
24-11-2022 19:31
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
1.2MB
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MD5
588d3553e92a37f1d0a0d8ce5a4f2f16
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SHA1
05a10895f582fc0c0aa48ab86cc071812e8bdd57
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SHA256
7bda6240ce9a5046aa330b33ea767f99ebc62548067947befcc86c4e38eeb82d
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SHA512
bf14f5505c4ecc51c14d06ac151981c757aee4c0b6a17f5484b1f17df62ae693b9a291d9136cf292122fe2930b53a4485bc3d2bbb3f4965d3b99068b1e4b8901
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SSDEEP
24576:dizpKE0QLLyoUs6APzBakxP1GNRCg/qZ3c+shW+lG/mgZIY7eCLxYif:2p+6u+6EMWgyZF0lSNeVif
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
Processes:
is-RL06S.tmpPrintFolders.exeyEpCVGKmhNoxI.exepid process 3288 is-RL06S.tmp 3904 PrintFolders.exe 4276 yEpCVGKmhNoxI.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
PrintFolders.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
Processes:
is-RL06S.tmppid process 3288 is-RL06S.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
Processes:
is-RL06S.tmpdescription ioc process File created C:\Program Files (x86)\PrintFolders\is-3657E.tmp is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\is-04UGA.tmp is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\is-MAQI0.tmp is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\is-7134M.tmp is-RL06S.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\is-IBGCT.tmp is-RL06S.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-RL06S.tmp File created C:\Program Files (x86)\PrintFolders\is-KADS8.tmp is-RL06S.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
Processes:
taskkill.exepid process 3032 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
PrintFolders.exepid process 3904 PrintFolders.exe 3904 PrintFolders.exe 3904 PrintFolders.exe 3904 PrintFolders.exe 3904 PrintFolders.exe 3904 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
PrintFolders.exepid process 3904 PrintFolders.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exeis-RL06S.tmpPrintFolders.execmd.exedescription pid process target process PID 4120 wrote to memory of 3288 4120 file.exe is-RL06S.tmp PID 4120 wrote to memory of 3288 4120 file.exe is-RL06S.tmp PID 4120 wrote to memory of 3288 4120 file.exe is-RL06S.tmp PID 3288 wrote to memory of 3904 3288 is-RL06S.tmp PrintFolders.exe PID 3288 wrote to memory of 3904 3288 is-RL06S.tmp PrintFolders.exe PID 3288 wrote to memory of 3904 3288 is-RL06S.tmp PrintFolders.exe PID 3904 wrote to memory of 4276 3904 PrintFolders.exe yEpCVGKmhNoxI.exe PID 3904 wrote to memory of 4276 3904 PrintFolders.exe yEpCVGKmhNoxI.exe PID 3904 wrote to memory of 4276 3904 PrintFolders.exe yEpCVGKmhNoxI.exe PID 3904 wrote to memory of 5092 3904 PrintFolders.exe cmd.exe PID 3904 wrote to memory of 5092 3904 PrintFolders.exe cmd.exe PID 3904 wrote to memory of 5092 3904 PrintFolders.exe cmd.exe PID 5092 wrote to memory of 3032 5092 cmd.exe taskkill.exe PID 5092 wrote to memory of 3032 5092 cmd.exe taskkill.exe PID 5092 wrote to memory of 3032 5092 cmd.exe taskkill.exe
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
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C:\Users\Admin\AppData\Local\Temp\is-HIQRH.tmp\is-RL06S.tmp"C:\Users\Admin\AppData\Local\Temp\is-HIQRH.tmp\is-RL06S.tmp" /SL4 $C0066 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1059867 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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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
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C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\yEpCVGKmhNoxI.exe
- Executes dropped EXE
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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
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files (x86)\PrintFolders\PrintFolders.exeFilesize
1.7MB
MD591af208739703c3d9bb08b3fbb8733ca
SHA15114bb0660ec29f942c9df10ef3e481b73af1a62
SHA2560b060d99b51beb3c4713e66c0f0c49d5e1c58676707d93576c530c57c90b0103
SHA512cfafab8211c3884f7794617c2733a4f6e431613d037f79f36d55781cc47a3dd6ddd63b117f3f23ee8a7c179fc81269f493219d881a8b69452ea67622064b4b72
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C:\Program Files (x86)\PrintFolders\PrintFolders.exeFilesize
1.7MB
MD591af208739703c3d9bb08b3fbb8733ca
SHA15114bb0660ec29f942c9df10ef3e481b73af1a62
SHA2560b060d99b51beb3c4713e66c0f0c49d5e1c58676707d93576c530c57c90b0103
SHA512cfafab8211c3884f7794617c2733a4f6e431613d037f79f36d55781cc47a3dd6ddd63b117f3f23ee8a7c179fc81269f493219d881a8b69452ea67622064b4b72
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C:\Users\Admin\AppData\Local\Temp\is-HIQRH.tmp\is-RL06S.tmpFilesize
643KB
MD585b94e72c3f2d2b5464e2aaf3c9e242a
SHA1ce7ccae5f50a990d059d59292d4a332979e162ba
SHA2561441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
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C:\Users\Admin\AppData\Local\Temp\is-HIQRH.tmp\is-RL06S.tmpFilesize
643KB
MD585b94e72c3f2d2b5464e2aaf3c9e242a
SHA1ce7ccae5f50a990d059d59292d4a332979e162ba
SHA2561441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
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C:\Users\Admin\AppData\Local\Temp\is-NBELC.tmp\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\yEpCVGKmhNoxI.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\yEpCVGKmhNoxI.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/3032-153-0x0000000000000000-mapping.dmp
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memory/3288-134-0x0000000000000000-mapping.dmp
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memory/3904-143-0x0000000000400000-0x00000000013B4000-memory.dmpFilesize
15.7MB
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memory/3904-142-0x0000000000400000-0x00000000013B4000-memory.dmpFilesize
15.7MB
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memory/3904-139-0x0000000000000000-mapping.dmp
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memory/3904-147-0x0000000000400000-0x00000000013B4000-memory.dmpFilesize
15.7MB
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memory/3904-148-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/3904-154-0x0000000000400000-0x00000000013B4000-memory.dmpFilesize
15.7MB
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memory/4120-132-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4120-137-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4120-155-0x0000000000400000-0x0000000000413000-memory.dmpFilesize
76KB
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memory/4276-144-0x0000000000000000-mapping.dmp
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memory/5092-152-0x0000000000000000-mapping.dmp