Analysis
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max time kernel
80s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 12:32
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
11472da9785d550e04d131459080900c
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SHA1
f9717e1844a36d6814ace57bbdfd9aeda1eeae91
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SHA256
b3b43ce90f09ee6f34d9e2959859039b6bca67ba757b9a256e02a9eff4312734
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SHA512
eb428b3f220992c65831a35074954ab517e2a21e060eaf88ce8d473f7d6d92a281ae67471abcdcedec9023d880979b99c384c19b75bc7d07eb781b2af76dda77
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SSDEEP
24576:R205JZPM27yNbAtLqFdoN/JcDIIKK2M4RTSNGPoMGcfhSkl5l/Hld:R2oMLJAtydoNW2XRhoMll5V
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.exeAEFKvvi0f9M.exepid process 552 file.tmp 4944 KitFiles136.exe 1324 AEFKvvi0f9M.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 552 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\language\is-8J47R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-U2J0C.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HOUSL.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-JUAN3.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-58ER6.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FDILU.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-88HJU.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\language\is-I4H6E.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat 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-O6DQ5.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-6P0GU.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-SGCVK.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-TA5L8.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-JT0KH.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-8I7QI.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 880 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 880 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2400 wrote to memory of 552 2400 file.exe file.tmp PID 2400 wrote to memory of 552 2400 file.exe file.tmp PID 2400 wrote to memory of 552 2400 file.exe file.tmp PID 552 wrote to memory of 4944 552 file.tmp KitFiles136.exe PID 552 wrote to memory of 4944 552 file.tmp KitFiles136.exe PID 552 wrote to memory of 4944 552 file.tmp KitFiles136.exe PID 4944 wrote to memory of 1324 4944 KitFiles136.exe AEFKvvi0f9M.exe PID 4944 wrote to memory of 1324 4944 KitFiles136.exe AEFKvvi0f9M.exe PID 4944 wrote to memory of 1324 4944 KitFiles136.exe AEFKvvi0f9M.exe PID 4944 wrote to memory of 3704 4944 KitFiles136.exe cmd.exe PID 4944 wrote to memory of 3704 4944 KitFiles136.exe cmd.exe PID 4944 wrote to memory of 3704 4944 KitFiles136.exe cmd.exe PID 3704 wrote to memory of 880 3704 cmd.exe taskkill.exe PID 3704 wrote to memory of 880 3704 cmd.exe taskkill.exe PID 3704 wrote to memory of 880 3704 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:2400 -
C:\Users\Admin\AppData\Local\Temp\is-0G7DN.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-0G7DN.tmp\file.tmp" /SL5="$80062,1050211,51712,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:552 -
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:4944 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\AEFKvvi0f9M.exe4⤵
- Executes dropped EXE
PID:1324 -
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:3704 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:880
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5598874109ca131fb4b7fea9b182f221a
SHA1d4387271cdd226c5baa306e442d01dce2c0fd050
SHA256cd5da3f0962ed6b3d0dbbeb04c9796710159928754741ea60f89742b185720f2
SHA512ec6520a51af4a367302636a4577ea1093d7e34a9e3cb5091270a91eda6f9c85f4175e443371bab308eb4f14365d9a513ef0ffa6493e81a7fcce0b7d2768d4ea1
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Filesize
1.8MB
MD5598874109ca131fb4b7fea9b182f221a
SHA1d4387271cdd226c5baa306e442d01dce2c0fd050
SHA256cd5da3f0962ed6b3d0dbbeb04c9796710159928754741ea60f89742b185720f2
SHA512ec6520a51af4a367302636a4577ea1093d7e34a9e3cb5091270a91eda6f9c85f4175e443371bab308eb4f14365d9a513ef0ffa6493e81a7fcce0b7d2768d4ea1
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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