Analysis
-
max time kernel
185s -
max time network
194s -
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, 21:32
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
-
Target
file.exe
-
Size
3.4MB
-
MD5
3c4f62e575eee7954b28d9195a1867b4
-
SHA1
74fe05ba5b7767e2df691cd5d8a8528cc860e724
-
SHA256
8e4d60fbedd0fda50ffe79d2ad1831790d0258d2d421acb942100e40d2ae0253
-
SHA512
ed52afab1bde2fb7f4a59578e1a35ce56ad69a36cddb7c9eaad78a7aa1f9da563037252c507da711398e06e0bf6736401a833bc2b0f2a25c7bd2d4f7cefedd3f
-
SSDEEP
98304:IX3/na2FU1sDpkVZwEUtBmuJsWTftRozfJ2PAEqSldBv/yFXcy5:4fDcsDuwqRdU9qikFXcy5
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
-
Executes dropped EXE 3 IoCs
pid Process 1508 is-5R3S5.tmp 2172 PrintFolders.exe 2072 YPCYJgx.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 1508 is-5R3S5.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops file in Program Files directory 9 IoCs
description ioc Process File created C:\Program Files (x86)\PrintFolders\is-AH0M6.tmp is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\is-SESQE.tmp is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\is-KLSQT.tmp is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\is-8C7D7.tmp is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\is-PLLC0.tmp is-5R3S5.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-5R3S5.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-5R3S5.tmp File created C:\Program Files (x86)\PrintFolders\is-9AM99.tmp is-5R3S5.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Kills process with taskkill 1 IoCs
pid Process 3724 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2172 PrintFolders.exe 2172 PrintFolders.exe 2172 PrintFolders.exe 2172 PrintFolders.exe 2172 PrintFolders.exe 2172 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2172 PrintFolders.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1260 wrote to memory of 1508 1260 file.exe 83 PID 1260 wrote to memory of 1508 1260 file.exe 83 PID 1260 wrote to memory of 1508 1260 file.exe 83 PID 1508 wrote to memory of 2172 1508 is-5R3S5.tmp 84 PID 1508 wrote to memory of 2172 1508 is-5R3S5.tmp 84 PID 1508 wrote to memory of 2172 1508 is-5R3S5.tmp 84 PID 2172 wrote to memory of 2072 2172 PrintFolders.exe 88 PID 2172 wrote to memory of 2072 2172 PrintFolders.exe 88 PID 2172 wrote to memory of 2072 2172 PrintFolders.exe 88 PID 2172 wrote to memory of 3844 2172 PrintFolders.exe 98 PID 2172 wrote to memory of 3844 2172 PrintFolders.exe 98 PID 2172 wrote to memory of 3844 2172 PrintFolders.exe 98 PID 3844 wrote to memory of 3724 3844 cmd.exe 100 PID 3844 wrote to memory of 3724 3844 cmd.exe 100 PID 3844 wrote to memory of 3724 3844 cmd.exe 100
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1260 -
C:\Users\Admin\AppData\Local\Temp\is-EH8UP.tmp\is-5R3S5.tmp"C:\Users\Admin\AppData\Local\Temp\is-EH8UP.tmp\is-5R3S5.tmp" /SL4 $B006A "C:\Users\Admin\AppData\Local\Temp\file.exe" 3357242 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1508 -
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:2172 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\YPCYJgx.exe4⤵
- Executes dropped EXE
PID:2072
-
-
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:3844 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
PID:3724
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
5.7MB
MD5ecceb829154188a97f9625df68cfc8d0
SHA1adb21f5449a8d71afb255210c5d6667eb7a1b7ef
SHA25691771072ff61e5506b51f936e7889eb75be62dc9fe0df56f7d33b458084108cf
SHA51270d7065686e80e97260b35d318c6a67661fd84aa7bddc7d8d73c20253b8d0ab92ae393030dbcb6f7cc87ba6151164004da8ccdb439e7a42cf9595f6c9d32956b
-
Filesize
5.7MB
MD5ecceb829154188a97f9625df68cfc8d0
SHA1adb21f5449a8d71afb255210c5d6667eb7a1b7ef
SHA25691771072ff61e5506b51f936e7889eb75be62dc9fe0df56f7d33b458084108cf
SHA51270d7065686e80e97260b35d318c6a67661fd84aa7bddc7d8d73c20253b8d0ab92ae393030dbcb6f7cc87ba6151164004da8ccdb439e7a42cf9595f6c9d32956b
-
Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
-
Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c