Analysis
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max time kernel
148s -
max time network
152s -
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, 07:16
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
3.5MB
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MD5
9491925d3ccecbec0ef7f0dafdf2391f
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SHA1
a2dc9d906a40175ad299316254c4ed45191cc752
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SHA256
ce7f8acbe181eef131aa586babe5b173279752dee598c758600f81d04ca53eb5
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SHA512
4b7b9d645b59cde6cb1d5ed5fe23fc4180130f0ce52e9c38312a1498cd4c3c017caa78fe8b283b557ec7db15d8b9ce7ce024b8db5d612538912b8afbe0919751
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SSDEEP
98304:Av+pYUiLW9hmXrzsH4bTaGhNK51zgoaGbXcyD:fYUiLw4XsHyaGh851zgoJbXcyD
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3796 is-40N6P.tmp 3472 PrintFolders.exe 2196 QKeFLSv0ls2IB.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 3796 is-40N6P.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-IK169.tmp is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\is-CVNOC.tmp is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\is-GL0GF.tmp is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\is-P9C5N.tmp is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\is-C1JV4.tmp is-40N6P.tmp File created C:\Program Files (x86)\PrintFolders\is-B41U2.tmp is-40N6P.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-40N6P.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-40N6P.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 2420 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3472 PrintFolders.exe 3472 PrintFolders.exe 3472 PrintFolders.exe 3472 PrintFolders.exe 3472 PrintFolders.exe 3472 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3472 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2420 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4964 wrote to memory of 3796 4964 file.exe 79 PID 4964 wrote to memory of 3796 4964 file.exe 79 PID 4964 wrote to memory of 3796 4964 file.exe 79 PID 3796 wrote to memory of 3472 3796 is-40N6P.tmp 80 PID 3796 wrote to memory of 3472 3796 is-40N6P.tmp 80 PID 3796 wrote to memory of 3472 3796 is-40N6P.tmp 80 PID 3472 wrote to memory of 2196 3472 PrintFolders.exe 81 PID 3472 wrote to memory of 2196 3472 PrintFolders.exe 81 PID 3472 wrote to memory of 2196 3472 PrintFolders.exe 81 PID 3472 wrote to memory of 2588 3472 PrintFolders.exe 83 PID 3472 wrote to memory of 2588 3472 PrintFolders.exe 83 PID 3472 wrote to memory of 2588 3472 PrintFolders.exe 83 PID 2588 wrote to memory of 2420 2588 cmd.exe 85 PID 2588 wrote to memory of 2420 2588 cmd.exe 85 PID 2588 wrote to memory of 2420 2588 cmd.exe 85
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:4964 -
C:\Users\Admin\AppData\Local\Temp\is-QKI4Q.tmp\is-40N6P.tmp"C:\Users\Admin\AppData\Local\Temp\is-QKI4Q.tmp\is-40N6P.tmp" /SL4 $B006E "C:\Users\Admin\AppData\Local\Temp\file.exe" 3394633 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3796 -
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:3472 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\QKeFLSv0ls2IB.exe4⤵
- Executes dropped EXE
PID:2196
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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:2588 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2420
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.8MB
MD5547ccd0ce6e805e84c75092f98a28693
SHA143ae162b8a938386e0590dd9d22a904e43b2e695
SHA2569eb49c73920979bb0136687df16840db02b2f62915a182569d5da75c9ab1cb3a
SHA512569ad25f3b99cddb8102176fab7f6d9bfc9ff0e71517bf44cf6d883d0af0704975150f9f3c5d6a9e42dfdaf497e575dc9f142bdd63b52f3e90217d2be611b6a0
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Filesize
5.8MB
MD5547ccd0ce6e805e84c75092f98a28693
SHA143ae162b8a938386e0590dd9d22a904e43b2e695
SHA2569eb49c73920979bb0136687df16840db02b2f62915a182569d5da75c9ab1cb3a
SHA512569ad25f3b99cddb8102176fab7f6d9bfc9ff0e71517bf44cf6d883d0af0704975150f9f3c5d6a9e42dfdaf497e575dc9f142bdd63b52f3e90217d2be611b6a0
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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