Analysis
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max time kernel
100s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 23:46
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
ecfaa9552eae7dbe2d7a72ad600ecc77
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SHA1
830499846c5a2132351c171e0f9fa55bf09254f6
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SHA256
1b253c0e2be2b1a60983c8ae3af32ecd4f9f1d40575f405f9ca8e4c121970789
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SHA512
584d57d8c779cbf9f7b388d748a89dbc7befd7592c484b3f9cb425b234c4e9d1957749af4c53cf7e738e806d72c179f4f4a8da6e5e6f0d7890453b01a9cce661
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SSDEEP
98304:QGk5m/G2b4plP252il7/eXHa3w1b6CFG8gFJXcy2:94pkwil7/vw1bJsJXcy2
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4196 is-Q71BG.tmp 2504 PrintFolders.exe 4016 ms2FJtHf.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 4196 is-Q71BG.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-90SRG.tmp is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\is-HM0SI.tmp is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\is-EQIAQ.tmp is-Q71BG.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\is-H1KEC.tmp is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\is-2UV93.tmp is-Q71BG.tmp File created C:\Program Files (x86)\PrintFolders\is-2M5RV.tmp is-Q71BG.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-Q71BG.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 2100 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2504 PrintFolders.exe 2504 PrintFolders.exe 2504 PrintFolders.exe 2504 PrintFolders.exe 2504 PrintFolders.exe 2504 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2100 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4792 wrote to memory of 4196 4792 file.exe 81 PID 4792 wrote to memory of 4196 4792 file.exe 81 PID 4792 wrote to memory of 4196 4792 file.exe 81 PID 4196 wrote to memory of 2504 4196 is-Q71BG.tmp 82 PID 4196 wrote to memory of 2504 4196 is-Q71BG.tmp 82 PID 4196 wrote to memory of 2504 4196 is-Q71BG.tmp 82 PID 2504 wrote to memory of 4016 2504 PrintFolders.exe 83 PID 2504 wrote to memory of 4016 2504 PrintFolders.exe 83 PID 2504 wrote to memory of 4016 2504 PrintFolders.exe 83 PID 2504 wrote to memory of 1752 2504 PrintFolders.exe 88 PID 2504 wrote to memory of 1752 2504 PrintFolders.exe 88 PID 2504 wrote to memory of 1752 2504 PrintFolders.exe 88 PID 1752 wrote to memory of 2100 1752 cmd.exe 90 PID 1752 wrote to memory of 2100 1752 cmd.exe 90 PID 1752 wrote to memory of 2100 1752 cmd.exe 90
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:4792 -
C:\Users\Admin\AppData\Local\Temp\is-E46AT.tmp\is-Q71BG.tmp"C:\Users\Admin\AppData\Local\Temp\is-E46AT.tmp\is-Q71BG.tmp" /SL4 $D0042 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3381589 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4196 -
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 use of WriteProcessMemory
PID:2504 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\ms2FJtHf.exe4⤵
- Executes dropped EXE
PID:4016
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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:1752 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2100
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.7MB
MD50a9480b38f4b4fe337dc9a18d3210678
SHA1489c6514977d07a049ae22cfdbbf931f297a1ada
SHA25609a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92
SHA5121308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577
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Filesize
5.7MB
MD50a9480b38f4b4fe337dc9a18d3210678
SHA1489c6514977d07a049ae22cfdbbf931f297a1ada
SHA25609a076157e0bd772b9d74ea1111382b7f990afa2589db20cdb75493f58cccb92
SHA5121308015eced2ca9cfdbdae77339b5f129613fca726c379b4c087ce093f687670608b3f9f0ebe38ba3c6d3c079e406de1aa906a4be966f7553815e37de1754577
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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