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Analysis
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max time kernel
106s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
24/11/2022, 06:16
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
1.2MB
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MD5
7910ef0cad74a4788d4bcc5ce2b88cfe
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SHA1
6e51548e807f1e610894921e0f8138eed80e889d
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SHA256
075000db5058368563101bf4d30e34518ed45898bb2b335189ce03c8b251aa18
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SHA512
2ac43adfb325e75f28e33ff9564871736c092469222e181bc8c37d24644dcebf2cd3e6f0f47e25f113b4b834a1af985e708a306a2973c54cb8bc767b91b74325
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SSDEEP
24576:tizOnNUT/YG98JCaFprBwERrre8LOagN3gZIY7eCLxYiu:GOnkmAaFFBbt5TgNQNeViu
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1760 is-HUJTQ.tmp 3896 PrintFolders.exe 1384 iPjNt9Cbx93.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 1760 is-HUJTQ.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-6H81I.tmp is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\is-86791.tmp is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\is-NMKR0.tmp is-HUJTQ.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-HUJTQ.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\is-33OA8.tmp is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\is-CRAOU.tmp is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-HUJTQ.tmp File created C:\Program Files (x86)\PrintFolders\is-3OBRL.tmp is-HUJTQ.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 4456 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3896 PrintFolders.exe 3896 PrintFolders.exe 3896 PrintFolders.exe 3896 PrintFolders.exe 3896 PrintFolders.exe 3896 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4456 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2224 wrote to memory of 1760 2224 file.exe 83 PID 2224 wrote to memory of 1760 2224 file.exe 83 PID 2224 wrote to memory of 1760 2224 file.exe 83 PID 1760 wrote to memory of 3896 1760 is-HUJTQ.tmp 84 PID 1760 wrote to memory of 3896 1760 is-HUJTQ.tmp 84 PID 1760 wrote to memory of 3896 1760 is-HUJTQ.tmp 84 PID 3896 wrote to memory of 1384 3896 PrintFolders.exe 85 PID 3896 wrote to memory of 1384 3896 PrintFolders.exe 85 PID 3896 wrote to memory of 1384 3896 PrintFolders.exe 85 PID 3896 wrote to memory of 2636 3896 PrintFolders.exe 94 PID 3896 wrote to memory of 2636 3896 PrintFolders.exe 94 PID 3896 wrote to memory of 2636 3896 PrintFolders.exe 94 PID 2636 wrote to memory of 4456 2636 cmd.exe 96 PID 2636 wrote to memory of 4456 2636 cmd.exe 96 PID 2636 wrote to memory of 4456 2636 cmd.exe 96
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:2224 -
C:\Users\Admin\AppData\Local\Temp\is-ER46I.tmp\is-HUJTQ.tmp"C:\Users\Admin\AppData\Local\Temp\is-ER46I.tmp\is-HUJTQ.tmp" /SL4 $901C2 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1038542 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1760 -
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:3896 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\iPjNt9Cbx93.exe
- Executes dropped EXE
PID:1384
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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:2636 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4456
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.4MB
MD568cd661547ebcb7282e5ccddc05048f8
SHA18feb6bf7e84980aabbfde51c867d3293d9dfe9ae
SHA25658f34cb3f0744edd1aa102ff719ba7f7e967b053f4b0b9eb58736cfca66da920
SHA5122cbb8ec3a961afb369b3b6454e3b7e016658336d3af49048bc0c55b876e13f000065dd637a925831bab83b90485f51070bb0f60d700a58bfe8284f9de6547e02
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Filesize
1.4MB
MD568cd661547ebcb7282e5ccddc05048f8
SHA18feb6bf7e84980aabbfde51c867d3293d9dfe9ae
SHA25658f34cb3f0744edd1aa102ff719ba7f7e967b053f4b0b9eb58736cfca66da920
SHA5122cbb8ec3a961afb369b3b6454e3b7e016658336d3af49048bc0c55b876e13f000065dd637a925831bab83b90485f51070bb0f60d700a58bfe8284f9de6547e02
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Filesize
643KB
MD585b94e72c3f2d2b5464e2aaf3c9e242a
SHA1ce7ccae5f50a990d059d59292d4a332979e162ba
SHA2561441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
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Filesize
643KB
MD585b94e72c3f2d2b5464e2aaf3c9e242a
SHA1ce7ccae5f50a990d059d59292d4a332979e162ba
SHA2561441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
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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