Analysis
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max time kernel
90s -
max time network
151s -
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 05:01
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
daa70640bad86f9a8eb315bc3e7c0872
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SHA1
43e7d96be86be2494300d465b01ead8c1806b9d1
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SHA256
cb14ed74f51dae04b34468d28d57d9a88b74f142b7934a59336ae9971db82f5c
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SHA512
1e0c89c324ef433f7bc3243c20b7fd0cdebade99365d16d956da7072614a523ecf8541000377d693865f9b36dc0e8ccb5e08d07bf7ac140c2bb2822dd1b381f8
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SSDEEP
24576:R20/oc6lEg7LgL6P/OvnRB5qesMnsigBD1KdPpQrHHkSkl5l/Hld:R22aN/S7sMsi6D1KdqCl5V
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.exeRLLVf2CmqE.exepid process 3012 file.tmp 4616 KitFiles136.exe 2312 RLLVf2CmqE.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 3012 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-QJ1OE.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-F2D7J.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-EQTRM.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-T00RK.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-E3TBP.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FQ8KJ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-O5MAB.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BTRCP.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-VL63S.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-LDJKT.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-0KBIT.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-TDO9K.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-G0CBR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-8KUJM.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 4732 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4616 KitFiles136.exe 4616 KitFiles136.exe 4616 KitFiles136.exe 4616 KitFiles136.exe 4616 KitFiles136.exe 4616 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4732 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 3796 wrote to memory of 3012 3796 file.exe file.tmp PID 3796 wrote to memory of 3012 3796 file.exe file.tmp PID 3796 wrote to memory of 3012 3796 file.exe file.tmp PID 3012 wrote to memory of 4616 3012 file.tmp KitFiles136.exe PID 3012 wrote to memory of 4616 3012 file.tmp KitFiles136.exe PID 3012 wrote to memory of 4616 3012 file.tmp KitFiles136.exe PID 4616 wrote to memory of 2312 4616 KitFiles136.exe RLLVf2CmqE.exe PID 4616 wrote to memory of 2312 4616 KitFiles136.exe RLLVf2CmqE.exe PID 4616 wrote to memory of 2312 4616 KitFiles136.exe RLLVf2CmqE.exe PID 4616 wrote to memory of 3208 4616 KitFiles136.exe cmd.exe PID 4616 wrote to memory of 3208 4616 KitFiles136.exe cmd.exe PID 4616 wrote to memory of 3208 4616 KitFiles136.exe cmd.exe PID 3208 wrote to memory of 4732 3208 cmd.exe taskkill.exe PID 3208 wrote to memory of 4732 3208 cmd.exe taskkill.exe PID 3208 wrote to memory of 4732 3208 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:3796 -
C:\Users\Admin\AppData\Local\Temp\is-1RC6F.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-1RC6F.tmp\file.tmp" /SL5="$D005E,901067,51712,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:3012 -
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:4616 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\RLLVf2CmqE.exe4⤵
- Executes dropped EXE
PID:2312 -
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:3208 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4732
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD57e3daafd4f69b0cf6f67982dd572eef1
SHA1017f38dc5184cf8caf78384504c0e4397e196c39
SHA256fe8fb821bfe1cc740b10dc384229090458502c2252cef51eb4f8f54e4059f9af
SHA5127cd38d8999594621d8e1d018142493a5e01570e3692f7671e1d22a8c77dda47bbd52a3425db3c1a8d2757d8ec5bd00414bb19230b7391e64c44fe54247254ae2
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Filesize
1.6MB
MD57e3daafd4f69b0cf6f67982dd572eef1
SHA1017f38dc5184cf8caf78384504c0e4397e196c39
SHA256fe8fb821bfe1cc740b10dc384229090458502c2252cef51eb4f8f54e4059f9af
SHA5127cd38d8999594621d8e1d018142493a5e01570e3692f7671e1d22a8c77dda47bbd52a3425db3c1a8d2757d8ec5bd00414bb19230b7391e64c44fe54247254ae2
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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