Analysis
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max time kernel
90s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 15:47
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
1.1MB
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MD5
d69a180ab14a9e4686e6445a1ca9542f
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SHA1
a34dfa60d247a275ef91c8c3428bb4177929df3c
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SHA256
f085017e5b6f0d18d377628461b1d00160a117f48bcc85efac1c4355633c0ed1
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SHA512
ad44ad9577c206a77c1b70b5476a6555970fb001f595037f357f8f69e2ddb829a7d63ab28d7feb46fd6df3b8f03b0307a21387eaed3e8a83fc855686848a9a8f
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SSDEEP
24576:R20gPvLa1pe9zaisAPTQzSnlQswQSvhCJoTFHYxerSkl5l/Hld:R2pLaXKP8sPwn5BWgnl5V
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
Processes:
file.tmpKitFiles136.exezV2rlXcsAK.exepid process 4784 file.tmp 5056 KitFiles136.exe 4932 zV2rlXcsAK.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KitFiles136.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4784 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)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-648V6.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2UGUF.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5OEEU.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FCFHA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2HENI.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-TQNQ9.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3C6F3.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-7E60J.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-6BI22.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-ULHUF.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-5V9DH.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe file.tmp File created C:\Program Files (x86)\Split Files\language\is-HNFAA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-SDTC6.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-FN34A.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat 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 3576 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 5056 KitFiles136.exe 5056 KitFiles136.exe 5056 KitFiles136.exe 5056 KitFiles136.exe 5056 KitFiles136.exe 5056 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3576 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2016 wrote to memory of 4784 2016 file.exe file.tmp PID 2016 wrote to memory of 4784 2016 file.exe file.tmp PID 2016 wrote to memory of 4784 2016 file.exe file.tmp PID 4784 wrote to memory of 5056 4784 file.tmp KitFiles136.exe PID 4784 wrote to memory of 5056 4784 file.tmp KitFiles136.exe PID 4784 wrote to memory of 5056 4784 file.tmp KitFiles136.exe PID 5056 wrote to memory of 4932 5056 KitFiles136.exe zV2rlXcsAK.exe PID 5056 wrote to memory of 4932 5056 KitFiles136.exe zV2rlXcsAK.exe PID 5056 wrote to memory of 4932 5056 KitFiles136.exe zV2rlXcsAK.exe PID 5056 wrote to memory of 4208 5056 KitFiles136.exe cmd.exe PID 5056 wrote to memory of 4208 5056 KitFiles136.exe cmd.exe PID 5056 wrote to memory of 4208 5056 KitFiles136.exe cmd.exe PID 4208 wrote to memory of 3576 4208 cmd.exe taskkill.exe PID 4208 wrote to memory of 3576 4208 cmd.exe taskkill.exe PID 4208 wrote to memory of 3576 4208 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
PID:2016 -
C:\Users\Admin\AppData\Local\Temp\is-67SUF.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-67SUF.tmp\file.tmp" /SL5="$701B2,873290,51712,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
PID:4784 -
C:\Program Files (x86)\Split Files\KitFiles136.exe"C:\Program Files (x86)\Split Files\KitFiles136.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5056 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\zV2rlXcsAK.exe4⤵
- Executes dropped EXE
PID:4932 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "KitFiles136.exe" /f & erase "C:\Program Files (x86)\Split Files\KitFiles136.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:4208 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3576
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5e2f386bc84224dc702a784aa70d05cf2
SHA10986e802181a614e62b94b37f1ec00390b5ae046
SHA2562d80cc67d719fd39f686bd1f7700449871e21e54d10cdf3ad5f7083f76449a03
SHA512448676c979d747f4297f4f9353bf32f64dc7952b6cb0c21ccc2d15f12a99f7870acb47d3fad0afec4ee0d35107e09785d0f50ea4119670b6f157358a7367eb1c
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Filesize
1.6MB
MD5e2f386bc84224dc702a784aa70d05cf2
SHA10986e802181a614e62b94b37f1ec00390b5ae046
SHA2562d80cc67d719fd39f686bd1f7700449871e21e54d10cdf3ad5f7083f76449a03
SHA512448676c979d747f4297f4f9353bf32f64dc7952b6cb0c21ccc2d15f12a99f7870acb47d3fad0afec4ee0d35107e09785d0f50ea4119670b6f157358a7367eb1c
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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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