Resubmissions
12-01-2023 15:53
230112-tbnc3sge84 1012-01-2023 14:09
230112-rf9e1agb96 1012-01-2023 13:47
230112-q3jmesgb68 10Analysis
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max time kernel
90s -
max time network
92s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
12-01-2023 14:09
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
1.5MB
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MD5
83c0aa4ff5b51fc32781a39e2ec2c6ea
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SHA1
bbace8228607fcbc07c36f39bbb1e2c844f50068
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SHA256
ac286eb0952202037306a127334f67323550fc3d276d689c81e6a4ee66752d8c
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SHA512
cb5f4a75cb3802dc022c4888ef90cd7f4d3deeafc0bdba868bf2c78eba173d736c03ce6ebc0d65b4cd6d633fd476764d24b5df58481dfb6fda49b8d91dd5108e
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SSDEEP
24576:220Sx+I9oRYe+qPJZHHXFutH84tYI694pQQgXC75ld1qSVpk:228Q3no91AH8YYx9UQgd1qapk
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
Processes:
file.tmpMitFiles138.exesv7o7Jn.exepid process 4840 file.tmp 4928 MitFiles138.exe 420 sv7o7Jn.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
MitFiles138.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation MitFiles138.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4840 file.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 17 IoCs
Processes:
file.tmpdescription ioc process File created C:\Program Files (x86)\Mit Files\is-C5NK0.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-CBDV1.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-4OLOH.tmp file.tmp File created C:\Program Files (x86)\Mit Files\is-56P5H.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-63L14.tmp file.tmp File created C:\Program Files (x86)\Mit Files\is-VB7HN.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-Q0I2R.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-07JT5.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-HD74U.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-6730H.tmp file.tmp File opened for modification C:\Program Files (x86)\Mit Files\unins000.dat file.tmp File created C:\Program Files (x86)\Mit Files\unins000.dat file.tmp File created C:\Program Files (x86)\Mit Files\is-7QA2U.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-4428T.tmp file.tmp File opened for modification C:\Program Files (x86)\Mit Files\MitFiles138.exe file.tmp File created C:\Program Files (x86)\Mit Files\is-2NNMJ.tmp file.tmp File created C:\Program Files (x86)\Mit Files\language\is-K1215.tmp file.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
Processes:
taskkill.exepid process 3936 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
MitFiles138.exepid process 4928 MitFiles138.exe 4928 MitFiles138.exe 4928 MitFiles138.exe 4928 MitFiles138.exe 4928 MitFiles138.exe 4928 MitFiles138.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3936 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpMitFiles138.execmd.exedescription pid process target process PID 1208 wrote to memory of 4840 1208 file.exe file.tmp PID 1208 wrote to memory of 4840 1208 file.exe file.tmp PID 1208 wrote to memory of 4840 1208 file.exe file.tmp PID 4840 wrote to memory of 4928 4840 file.tmp MitFiles138.exe PID 4840 wrote to memory of 4928 4840 file.tmp MitFiles138.exe PID 4840 wrote to memory of 4928 4840 file.tmp MitFiles138.exe PID 4928 wrote to memory of 420 4928 MitFiles138.exe sv7o7Jn.exe PID 4928 wrote to memory of 420 4928 MitFiles138.exe sv7o7Jn.exe PID 4928 wrote to memory of 420 4928 MitFiles138.exe sv7o7Jn.exe PID 4928 wrote to memory of 3276 4928 MitFiles138.exe cmd.exe PID 4928 wrote to memory of 3276 4928 MitFiles138.exe cmd.exe PID 4928 wrote to memory of 3276 4928 MitFiles138.exe cmd.exe PID 3276 wrote to memory of 3936 3276 cmd.exe taskkill.exe PID 3276 wrote to memory of 3936 3276 cmd.exe taskkill.exe PID 3276 wrote to memory of 3936 3276 cmd.exe taskkill.exe
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
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C:\Users\Admin\AppData\Local\Temp\is-O7KSM.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-O7KSM.tmp\file.tmp" /SL5="$A0068,1335001,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Mit Files\MitFiles138.exe"C:\Program Files (x86)\Mit Files\MitFiles138.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sv7o7Jn.exe
- Executes dropped EXE
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /im "MitFiles138.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Program Files (x86)\Mit Files\MitFiles138.exeFilesize
1.8MB
MD580fc0514c83b5e26c06d05b2fbd7ac44
SHA141967041535a536b9f2a2960ace668ce115d17db
SHA2562ed6d9435d0e13540cd4f64a3675546391f9910874108a0935e1421cb964d241
SHA512abe834c319883b0ef5a1cd8408a58402c862e2214005ed7821eb9f17c5fc97e4d61abd674de19f384bd93c902404f9a18af38706d5f589094533f7fe2460e318
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C:\Program Files (x86)\Mit Files\MitFiles138.exeFilesize
1.8MB
MD580fc0514c83b5e26c06d05b2fbd7ac44
SHA141967041535a536b9f2a2960ace668ce115d17db
SHA2562ed6d9435d0e13540cd4f64a3675546391f9910874108a0935e1421cb964d241
SHA512abe834c319883b0ef5a1cd8408a58402c862e2214005ed7821eb9f17c5fc97e4d61abd674de19f384bd93c902404f9a18af38706d5f589094533f7fe2460e318
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C:\Users\Admin\AppData\Local\Temp\is-GL9AR.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-O7KSM.tmp\file.tmpFilesize
695KB
MD5415533bb40980951c966665cff9e2fe7
SHA1fce396c8fa01876dd008f22c8be9a9b706f4aaec
SHA256f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734
SHA5123a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae
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C:\Users\Admin\AppData\Local\Temp\is-O7KSM.tmp\file.tmpFilesize
695KB
MD5415533bb40980951c966665cff9e2fe7
SHA1fce396c8fa01876dd008f22c8be9a9b706f4aaec
SHA256f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734
SHA5123a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae
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C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sv7o7Jn.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\sv7o7Jn.exeFilesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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memory/420-144-0x0000000000000000-mapping.dmp
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memory/1208-155-0x0000000000400000-0x000000000047D000-memory.dmpFilesize
500KB
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memory/1208-142-0x0000000000400000-0x000000000047D000-memory.dmpFilesize
500KB
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memory/1208-132-0x0000000000400000-0x000000000047D000-memory.dmpFilesize
500KB
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memory/3276-152-0x0000000000000000-mapping.dmp
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memory/3936-153-0x0000000000000000-mapping.dmp
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memory/4840-134-0x0000000000000000-mapping.dmp
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memory/4928-143-0x0000000000400000-0x00000000013C2000-memory.dmpFilesize
15.8MB
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memory/4928-151-0x0000000000400000-0x00000000013C2000-memory.dmpFilesize
15.8MB
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memory/4928-147-0x0000000010000000-0x000000001001B000-memory.dmpFilesize
108KB
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memory/4928-141-0x0000000000400000-0x00000000013C2000-memory.dmpFilesize
15.8MB
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memory/4928-154-0x0000000000400000-0x00000000013C2000-memory.dmpFilesize
15.8MB
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memory/4928-138-0x0000000000000000-mapping.dmp