Analysis
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max time kernel
163s -
max time network
177s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
30/11/2022, 18:32
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
2.1MB
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MD5
4cc35a2fc3f9694cc307abc4d9272555
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SHA1
46c999720887c476da02264baf53c8270765e2db
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SHA256
113819847de16fc122a5f16efe077489ee1fc94b787e8f51cf25222aec03fb1c
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SHA512
72826df8a4f5d3dfc7a5750eb235e79e8415cdbf9880d41cf6f5bd822f9fa1405b0acf78fb0c0025948ed87c2bc3c76019fb21a7dd28427cf7622ebd410f0073
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SSDEEP
49152:sRvk18cUneL5TVx959j6tydLNL9MB+v9l0masyZyREt/l4Y/g1vAG5cyf:sRA8La5TV/59j6tyds29WmWZyREt95gx
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1520 is-KOU11.tmp 2384 PrintFolders.exe 1544 gJgiRpfZ.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 1520 is-KOU11.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-V5ENQ.tmp is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\is-S46E8.tmp is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\is-N0S3L.tmp is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\is-8CC91.tmp is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\is-NKO75.tmp is-KOU11.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-KOU11.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-KOU11.tmp File created C:\Program Files (x86)\PrintFolders\is-SEU46.tmp is-KOU11.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 4844 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2384 PrintFolders.exe 2384 PrintFolders.exe 2384 PrintFolders.exe 2384 PrintFolders.exe 2384 PrintFolders.exe 2384 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2384 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4844 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4052 wrote to memory of 1520 4052 file.exe 80 PID 4052 wrote to memory of 1520 4052 file.exe 80 PID 4052 wrote to memory of 1520 4052 file.exe 80 PID 1520 wrote to memory of 2384 1520 is-KOU11.tmp 81 PID 1520 wrote to memory of 2384 1520 is-KOU11.tmp 81 PID 1520 wrote to memory of 2384 1520 is-KOU11.tmp 81 PID 2384 wrote to memory of 1544 2384 PrintFolders.exe 83 PID 2384 wrote to memory of 1544 2384 PrintFolders.exe 83 PID 2384 wrote to memory of 1544 2384 PrintFolders.exe 83 PID 2384 wrote to memory of 376 2384 PrintFolders.exe 87 PID 2384 wrote to memory of 376 2384 PrintFolders.exe 87 PID 2384 wrote to memory of 376 2384 PrintFolders.exe 87 PID 376 wrote to memory of 4844 376 cmd.exe 89 PID 376 wrote to memory of 4844 376 cmd.exe 89 PID 376 wrote to memory of 4844 376 cmd.exe 89
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:4052 -
C:\Users\Admin\AppData\Local\Temp\is-P4V42.tmp\is-KOU11.tmp"C:\Users\Admin\AppData\Local\Temp\is-P4V42.tmp\is-KOU11.tmp" /SL4 $B01EE "C:\Users\Admin\AppData\Local\Temp\file.exe" 1914659 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1520 -
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:2384 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\gJgiRpfZ.exe4⤵
- Executes dropped EXE
PID:1544
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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:376 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4844
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD524c198e463eb68a925b440fb96e12393
SHA1c2aec0f33a2bf38561bc2c15928cd2da9d60df98
SHA2561d6889618b8b7493edc887c8b8bd7754b6c116fcd61d5b3a26471183af3f824b
SHA5126e16e09fbaa6f820d4cc397e15978aff2e6946f1d8190b31d2588521086d1a542be04a37c232eb9f861b59d28504bcca4117192f46bc3ad4d298a21b37f1be4a
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Filesize
3.1MB
MD524c198e463eb68a925b440fb96e12393
SHA1c2aec0f33a2bf38561bc2c15928cd2da9d60df98
SHA2561d6889618b8b7493edc887c8b8bd7754b6c116fcd61d5b3a26471183af3f824b
SHA5126e16e09fbaa6f820d4cc397e15978aff2e6946f1d8190b31d2588521086d1a542be04a37c232eb9f861b59d28504bcca4117192f46bc3ad4d298a21b37f1be4a
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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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
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c