Analysis
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max time kernel
91s -
max time network
149s -
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 08:17
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
2fdbf35191bb51ed7bc1b1190501bdc9
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SHA1
7f3b096bc5efa85aa9f1bd4dfa6b8406cf6645cf
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SHA256
75f6ff4d2801c2175f944360cc0fc4ff77806e4e0e2459c135d7c03e34b28b2b
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SHA512
7059a8cf35d909e7459f75c0bab535408baff282d9641e926af47a07f1a530fec4707f104248932bd0c22f5a003bcbe10747d8ade7249fc31111ecf4337e4a61
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SSDEEP
24576:R20Aa8DYurCnddZx/D+A/RI7Lo81qeRbtSkl5l/Hld:R2JYurCnnZxayqogqal5V
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.exevc1rZaHfTLOm.exepid process 1664 file.tmp 4652 KitFiles136.exe 4900 vc1rZaHfTLOm.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 1664 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\is-DVEL4.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HUUP8.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-QJ73M.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-PAOE2.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\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-KBN14.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-TJ0S7.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-47MP0.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-2RL5G.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-ITU80.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-IL6VC.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-DFJHR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-AUPAC.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-Q70IA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5TI18.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 4532 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4652 KitFiles136.exe 4652 KitFiles136.exe 4652 KitFiles136.exe 4652 KitFiles136.exe 4652 KitFiles136.exe 4652 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4532 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4084 wrote to memory of 1664 4084 file.exe file.tmp PID 4084 wrote to memory of 1664 4084 file.exe file.tmp PID 4084 wrote to memory of 1664 4084 file.exe file.tmp PID 1664 wrote to memory of 4652 1664 file.tmp KitFiles136.exe PID 1664 wrote to memory of 4652 1664 file.tmp KitFiles136.exe PID 1664 wrote to memory of 4652 1664 file.tmp KitFiles136.exe PID 4652 wrote to memory of 4900 4652 KitFiles136.exe vc1rZaHfTLOm.exe PID 4652 wrote to memory of 4900 4652 KitFiles136.exe vc1rZaHfTLOm.exe PID 4652 wrote to memory of 4900 4652 KitFiles136.exe vc1rZaHfTLOm.exe PID 4652 wrote to memory of 1640 4652 KitFiles136.exe cmd.exe PID 4652 wrote to memory of 1640 4652 KitFiles136.exe cmd.exe PID 4652 wrote to memory of 1640 4652 KitFiles136.exe cmd.exe PID 1640 wrote to memory of 4532 1640 cmd.exe taskkill.exe PID 1640 wrote to memory of 4532 1640 cmd.exe taskkill.exe PID 1640 wrote to memory of 4532 1640 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:4084 -
C:\Users\Admin\AppData\Local\Temp\is-8T8RB.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-8T8RB.tmp\file.tmp" /SL5="$E0056,870528,51712,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:1664 -
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:4652 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\vc1rZaHfTLOm.exe4⤵
- Executes dropped EXE
PID:4900 -
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:1640 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4532
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5c144ed7c92e90db39c5aa36855d4d392
SHA1169bdb599dea8f9525537bab0430e63fdb844aa8
SHA2563750765c0d4895d857da0496832b6234962cbcfb7275d7adedbdd0e3dda42424
SHA51243d5755c20fd4d949d9f05b1b40164dc269e13033300d05b0aaac94327c08800233108e019cc18d3fa79bd2e65f52fe8dd418b1693dab3b0a40c950e36789fa1
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Filesize
1.6MB
MD5c144ed7c92e90db39c5aa36855d4d392
SHA1169bdb599dea8f9525537bab0430e63fdb844aa8
SHA2563750765c0d4895d857da0496832b6234962cbcfb7275d7adedbdd0e3dda42424
SHA51243d5755c20fd4d949d9f05b1b40164dc269e13033300d05b0aaac94327c08800233108e019cc18d3fa79bd2e65f52fe8dd418b1693dab3b0a40c950e36789fa1
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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