Analysis
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max time kernel
114s -
max time network
132s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 06:18
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
4f9d28076523bae441a0df53c41a1be2
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SHA1
29b9aa07e9e49e63436c666a4a1bc512d978c9ec
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SHA256
16abcb87b5b04dbbdf3d3b4b26c2372fed244e618871e38972d2b71670e96477
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SHA512
4d3086b2a35aa09c20d607c440bf0302865788f89f24d8a209362eab5f896222de1a5fad42027407be84569e7ada8e659ad42dc3f7c230bfc9615fd54bf88629
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SSDEEP
98304:sQniT46n8wxsKe/v4AnqD1WjmfnFfmITCWfLXcyr:9iTZ8nKeH4AnYcjanMIeWfLXcyr
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4840 is-NCIOQ.tmp 1032 PrintFolders.exe 4472 XTBFLJLTJ.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 4840 is-NCIOQ.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\unins000.dat is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-RBUCM.tmp is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-SLKUS.tmp is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-7TE02.tmp is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-A6S56.tmp is-NCIOQ.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-RI0B7.tmp is-NCIOQ.tmp File created C:\Program Files (x86)\PrintFolders\is-0R6M3.tmp is-NCIOQ.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-NCIOQ.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 2496 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1032 PrintFolders.exe 1032 PrintFolders.exe 1032 PrintFolders.exe 1032 PrintFolders.exe 1032 PrintFolders.exe 1032 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2496 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1504 wrote to memory of 4840 1504 file.exe 80 PID 1504 wrote to memory of 4840 1504 file.exe 80 PID 1504 wrote to memory of 4840 1504 file.exe 80 PID 4840 wrote to memory of 1032 4840 is-NCIOQ.tmp 81 PID 4840 wrote to memory of 1032 4840 is-NCIOQ.tmp 81 PID 4840 wrote to memory of 1032 4840 is-NCIOQ.tmp 81 PID 1032 wrote to memory of 4472 1032 PrintFolders.exe 82 PID 1032 wrote to memory of 4472 1032 PrintFolders.exe 82 PID 1032 wrote to memory of 4472 1032 PrintFolders.exe 82 PID 1032 wrote to memory of 3820 1032 PrintFolders.exe 89 PID 1032 wrote to memory of 3820 1032 PrintFolders.exe 89 PID 1032 wrote to memory of 3820 1032 PrintFolders.exe 89 PID 3820 wrote to memory of 2496 3820 cmd.exe 91 PID 3820 wrote to memory of 2496 3820 cmd.exe 91 PID 3820 wrote to memory of 2496 3820 cmd.exe 91
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:1504 -
C:\Users\Admin\AppData\Local\Temp\is-7SGBS.tmp\is-NCIOQ.tmp"C:\Users\Admin\AppData\Local\Temp\is-7SGBS.tmp\is-NCIOQ.tmp" /SL4 $1201C8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3324874 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4840 -
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:1032 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\XTBFLJLTJ.exe4⤵
- Executes dropped EXE
PID:4472
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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:3820 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2496
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.8MB
MD532c99c82eac89d46fb0228419b1055ca
SHA1cb26d2383dcfb9cc396605684e5fda77751226e9
SHA256d3552df9ec71a9f00e59b961dcd2570ff5f3d315119abd0b23cbf9b857caa139
SHA5128455306efcecea72d80906a7b4390b95acb6e582e0ba7c04e6338817f84744e2dd66fd26c25a42c8f0f0e9430b65b431f71928eca8aa91c1c7882ec7ca9d961e
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Filesize
5.8MB
MD532c99c82eac89d46fb0228419b1055ca
SHA1cb26d2383dcfb9cc396605684e5fda77751226e9
SHA256d3552df9ec71a9f00e59b961dcd2570ff5f3d315119abd0b23cbf9b857caa139
SHA5128455306efcecea72d80906a7b4390b95acb6e582e0ba7c04e6338817f84744e2dd66fd26c25a42c8f0f0e9430b65b431f71928eca8aa91c1c7882ec7ca9d961e
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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