Analysis
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max time kernel
91s -
max time network
139s -
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 16:03
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
1.2MB
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MD5
8ddbbbdc4bb2a436e141718181e66aa7
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SHA1
308bbd45c46532d7209acf50878fb15e04be19bb
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SHA256
fca7aefe9bef061a66884ffd31aaa1757378dd55d0f7eb68fcb8205e85e3a4ec
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SHA512
91c0c516c66eeeba06a2f49524bd4e39111ba5401141ee29f74a7f522c63f4abb6bf3a44b1ca8d936d413eee4187a90831b8cb816b4073dfc688c2abaa1fab1a
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SSDEEP
24576:R20r/P0qq18NrwDF580IbuXmObCE/e6ORVD355WA0Skl5l/Hld:R2O0qAkooQXjbCkhOvV57yl5V
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.exe4KbkXl1WrTusRf.exepid process 5072 file.tmp 5036 KitFiles136.exe 2116 4KbkXl1WrTusRf.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 5072 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 opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe file.tmp File created C:\Program Files (x86)\Split Files\is-MIKGQ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-LB31E.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-DGIRT.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-ME09N.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-94HTH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BHRO1.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-627Q1.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-LK04N.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-N88VP.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-KL6BD.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-QVQRD.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-GRJ9R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-6PH76.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-63DQ4.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 3696 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 5036 KitFiles136.exe 5036 KitFiles136.exe 5036 KitFiles136.exe 5036 KitFiles136.exe 5036 KitFiles136.exe 5036 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3696 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4304 wrote to memory of 5072 4304 file.exe file.tmp PID 4304 wrote to memory of 5072 4304 file.exe file.tmp PID 4304 wrote to memory of 5072 4304 file.exe file.tmp PID 5072 wrote to memory of 5036 5072 file.tmp KitFiles136.exe PID 5072 wrote to memory of 5036 5072 file.tmp KitFiles136.exe PID 5072 wrote to memory of 5036 5072 file.tmp KitFiles136.exe PID 5036 wrote to memory of 2116 5036 KitFiles136.exe 4KbkXl1WrTusRf.exe PID 5036 wrote to memory of 2116 5036 KitFiles136.exe 4KbkXl1WrTusRf.exe PID 5036 wrote to memory of 2116 5036 KitFiles136.exe 4KbkXl1WrTusRf.exe PID 5036 wrote to memory of 2064 5036 KitFiles136.exe cmd.exe PID 5036 wrote to memory of 2064 5036 KitFiles136.exe cmd.exe PID 5036 wrote to memory of 2064 5036 KitFiles136.exe cmd.exe PID 2064 wrote to memory of 3696 2064 cmd.exe taskkill.exe PID 2064 wrote to memory of 3696 2064 cmd.exe taskkill.exe PID 2064 wrote to memory of 3696 2064 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:4304 -
C:\Users\Admin\AppData\Local\Temp\is-JEVNN.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-JEVNN.tmp\file.tmp" /SL5="$90042,1025902,51712,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:5072 -
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:5036 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\4KbkXl1WrTusRf.exe4⤵
- Executes dropped EXE
PID:2116 -
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:2064 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3696
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5db6af62a7cb5ef7aff50d51bdc9e20d2
SHA1a0fedd7ddcece6c5cafcdc5985c23df7ccc15a1f
SHA256f5116271f20c5003f613a0ccb39738b93bddaf49ee3a48ccc785da3d5d62dc6b
SHA512ec462e0bbf337ce19b6c4a5151500a7848c2d188be193d3d2b801cfc6d5f855f044b81547320341fb19f15761a55606b05c1d1e1b99e0c218f6f23397bb199b1
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Filesize
1.8MB
MD5db6af62a7cb5ef7aff50d51bdc9e20d2
SHA1a0fedd7ddcece6c5cafcdc5985c23df7ccc15a1f
SHA256f5116271f20c5003f613a0ccb39738b93bddaf49ee3a48ccc785da3d5d62dc6b
SHA512ec462e0bbf337ce19b6c4a5151500a7848c2d188be193d3d2b801cfc6d5f855f044b81547320341fb19f15761a55606b05c1d1e1b99e0c218f6f23397bb199b1
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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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
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c