Analysis
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max time kernel
151s -
max time network
208s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 05:33
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
3.6MB
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MD5
c485563eee07d548691aa7cafbf6d07c
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SHA1
99cb61bf96e4235afa4d3725f4398066f4b391c7
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SHA256
1dbc2897673b769d86d13cd55f8e0f4f70f9b2f52954cb1fa167b641a91e073a
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SHA512
5071cae90fac352ef4283d279f6432899a1aff67eaa13a3c9f5c0267a3a81a082d8b2f7a0819e3a81a42760b3c03dd90c59515578e2613e50a602b21b6b6cfd0
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SSDEEP
98304:cDEp5htJpuf8Z+2YuO6FSioQqCpttrxyKx8lZvfyFXcyY:ekhJpDTYuG/zC/tIKAZnyFXcyY
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 216 is-DE5DF.tmp 3940 PrintFolders.exe 1352 ePW5Qu.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 216 is-DE5DF.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-GPBCB.tmp is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\is-1QBRM.tmp is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\is-7L09E.tmp is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\is-JTUIE.tmp is-DE5DF.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\is-1GOLK.tmp is-DE5DF.tmp File created C:\Program Files (x86)\PrintFolders\is-N2L76.tmp is-DE5DF.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-DE5DF.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 2584 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3940 PrintFolders.exe 3940 PrintFolders.exe 3940 PrintFolders.exe 3940 PrintFolders.exe 3940 PrintFolders.exe 3940 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3940 PrintFolders.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 3968 wrote to memory of 216 3968 file.exe 84 PID 3968 wrote to memory of 216 3968 file.exe 84 PID 3968 wrote to memory of 216 3968 file.exe 84 PID 216 wrote to memory of 3940 216 is-DE5DF.tmp 85 PID 216 wrote to memory of 3940 216 is-DE5DF.tmp 85 PID 216 wrote to memory of 3940 216 is-DE5DF.tmp 85 PID 3940 wrote to memory of 1352 3940 PrintFolders.exe 86 PID 3940 wrote to memory of 1352 3940 PrintFolders.exe 86 PID 3940 wrote to memory of 1352 3940 PrintFolders.exe 86 PID 3940 wrote to memory of 4720 3940 PrintFolders.exe 97 PID 3940 wrote to memory of 4720 3940 PrintFolders.exe 97 PID 3940 wrote to memory of 4720 3940 PrintFolders.exe 97 PID 4720 wrote to memory of 2584 4720 cmd.exe 99 PID 4720 wrote to memory of 2584 4720 cmd.exe 99 PID 4720 wrote to memory of 2584 4720 cmd.exe 99
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:3968 -
C:\Users\Admin\AppData\Local\Temp\is-87GM3.tmp\is-DE5DF.tmp"C:\Users\Admin\AppData\Local\Temp\is-87GM3.tmp\is-DE5DF.tmp" /SL4 $70116 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3562496 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:216 -
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:3940 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\ePW5Qu.exe4⤵
- Executes dropped EXE
PID:1352
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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:4720 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
PID:2584
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
6.0MB
MD58afd31f8e783d3cd871f87bfa4a3f695
SHA1f986d51f96efaddc9c464e3c588062c9e173c2e2
SHA256588bc48f3d39ca1a443fd3944b0b01937b31535b1dbd2ad9e8e111cdac0dbffa
SHA51227ee490f261d07fb1be4416112ac3e6659e2673efabad57b63228c3510816ee6001a26cc2b6c7f544d40fda00121ef166b1e0cbc3fec7902848179f84e331b96
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Filesize
6.0MB
MD58afd31f8e783d3cd871f87bfa4a3f695
SHA1f986d51f96efaddc9c464e3c588062c9e173c2e2
SHA256588bc48f3d39ca1a443fd3944b0b01937b31535b1dbd2ad9e8e111cdac0dbffa
SHA51227ee490f261d07fb1be4416112ac3e6659e2673efabad57b63228c3510816ee6001a26cc2b6c7f544d40fda00121ef166b1e0cbc3fec7902848179f84e331b96
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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