Analysis
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max time kernel
91s -
max time network
146s -
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 13:31
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
1.1MB
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MD5
c9dd85832b7628afe723dfe27b352b7a
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SHA1
acc0bc6db748bbb126a59894510c6069324d3243
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SHA256
afe6e94ed84c442357f5f1edf24d716adde5dadf4d5b0ccc36b4820817f36a08
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SHA512
3ee7f40c26478c917d8d3569c767babc71276c9de1efc7f2bb24a6ccb5d23d59e463b709fb71a0bcb240746610cfc2376809aa11b520cd2c396e090c56251371
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SSDEEP
24576:R20WZI7ad3mflZ3M3Ud4+sErgaELK/y1q4NSkl5l/Hld:R2d3mflZ3aUEgCl5V
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.exe3uhY21.exepid process 448 file.tmp 4144 KitFiles136.exe 4124 3uhY21.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 448 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-ILFG4.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-RN1IC.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\language\is-HQD7D.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-U7LJH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-PP7GC.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-9OR9N.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-CCA7B.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-687FG.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-RHK92.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\is-LLQMA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-LV3KE.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-KFFNS.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-SMQBH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3TA75.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 3516 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4144 KitFiles136.exe 4144 KitFiles136.exe 4144 KitFiles136.exe 4144 KitFiles136.exe 4144 KitFiles136.exe 4144 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3516 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4824 wrote to memory of 448 4824 file.exe file.tmp PID 4824 wrote to memory of 448 4824 file.exe file.tmp PID 4824 wrote to memory of 448 4824 file.exe file.tmp PID 448 wrote to memory of 4144 448 file.tmp KitFiles136.exe PID 448 wrote to memory of 4144 448 file.tmp KitFiles136.exe PID 448 wrote to memory of 4144 448 file.tmp KitFiles136.exe PID 4144 wrote to memory of 4124 4144 KitFiles136.exe 3uhY21.exe PID 4144 wrote to memory of 4124 4144 KitFiles136.exe 3uhY21.exe PID 4144 wrote to memory of 4124 4144 KitFiles136.exe 3uhY21.exe PID 4144 wrote to memory of 720 4144 KitFiles136.exe cmd.exe PID 4144 wrote to memory of 720 4144 KitFiles136.exe cmd.exe PID 4144 wrote to memory of 720 4144 KitFiles136.exe cmd.exe PID 720 wrote to memory of 3516 720 cmd.exe taskkill.exe PID 720 wrote to memory of 3516 720 cmd.exe taskkill.exe PID 720 wrote to memory of 3516 720 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:4824 -
C:\Users\Admin\AppData\Local\Temp\is-VN9UM.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-VN9UM.tmp\file.tmp" /SL5="$1001D4,880373,51712,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:448 -
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:4144 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\3uhY21.exe4⤵
- Executes dropped EXE
PID:4124 -
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:720 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3516
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5b4b477b27a335424d0600df37d5379ff
SHA1840161d5f949704768d9ffe25e8440f16ce23fa7
SHA25665e5bd487dfaa93f51802f408c5afef647ff76a596957f32ee7d67157482a039
SHA512dc56eb5dfc0a04ce6ef55c818fa5534f6706e1ae2dd1eeb8e0cef71bad1f475e09f3b7c1831b8f5ab61e288774c27290ef0855fac667d903ea4319d514d6a35a
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Filesize
1.6MB
MD5b4b477b27a335424d0600df37d5379ff
SHA1840161d5f949704768d9ffe25e8440f16ce23fa7
SHA25665e5bd487dfaa93f51802f408c5afef647ff76a596957f32ee7d67157482a039
SHA512dc56eb5dfc0a04ce6ef55c818fa5534f6706e1ae2dd1eeb8e0cef71bad1f475e09f3b7c1831b8f5ab61e288774c27290ef0855fac667d903ea4319d514d6a35a
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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