Analysis
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max time kernel
143s -
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
28/12/2022, 22:37
Static task
static1
Behavioral task
behavioral1
Sample
ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe
Resource
win7-20220812-en
General
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Target
ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe
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Size
2.0MB
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MD5
04b5c13adff9d4c71efc6e3269e60c13
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SHA1
6ca843c819bc8a5a768fa5b4baef7b499f1fd804
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SHA256
ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c
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SHA512
cc6432eac80c8259868ae4d55eca54c059881772d34e0d27c3b6a1ab7a2779a53af72bfbcad6362ade7a5703f3d649ac315b4b76d09f1ad0a2ef60d503bc6d4e
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SSDEEP
49152:CivLILOPeMBijq1C0heGjQE96YFqQ7/d0rfpHjUDXKa:Civ8jvjWC0ZUi1IG1YfVc
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4012 is-6P3CT.tmp 3356 SplitFiles123.exe 4976 faYAwiFC.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation SplitFiles123.exe -
Loads dropped DLL 1 IoCs
pid Process 4012 is-6P3CT.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
description ioc Process File created C:\Program Files (x86)\Split Files\language\is-65RD6.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\is-APKEQ.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-0UO1K.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-NBTCP.tmp is-6P3CT.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\is-AK3EG.tmp is-6P3CT.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-OUFG8.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-7426Q.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\is-7GDMI.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-N196Q.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-2T06O.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-60E2K.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\language\is-S872C.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\is-V3Q89.tmp is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-6P3CT.tmp File created C:\Program Files (x86)\Split Files\is-3P1TM.tmp is-6P3CT.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
pid Process 4744 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3356 SplitFiles123.exe 3356 SplitFiles123.exe 3356 SplitFiles123.exe 3356 SplitFiles123.exe 3356 SplitFiles123.exe 3356 SplitFiles123.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4744 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2220 wrote to memory of 4012 2220 ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe 80 PID 2220 wrote to memory of 4012 2220 ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe 80 PID 2220 wrote to memory of 4012 2220 ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe 80 PID 4012 wrote to memory of 3356 4012 is-6P3CT.tmp 81 PID 4012 wrote to memory of 3356 4012 is-6P3CT.tmp 81 PID 4012 wrote to memory of 3356 4012 is-6P3CT.tmp 81 PID 3356 wrote to memory of 4976 3356 SplitFiles123.exe 82 PID 3356 wrote to memory of 4976 3356 SplitFiles123.exe 82 PID 3356 wrote to memory of 4976 3356 SplitFiles123.exe 82 PID 3356 wrote to memory of 1548 3356 SplitFiles123.exe 84 PID 3356 wrote to memory of 1548 3356 SplitFiles123.exe 84 PID 3356 wrote to memory of 1548 3356 SplitFiles123.exe 84 PID 1548 wrote to memory of 4744 1548 cmd.exe 86 PID 1548 wrote to memory of 4744 1548 cmd.exe 86 PID 1548 wrote to memory of 4744 1548 cmd.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe"C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp"C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp" /SL4 $601D0 "C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe" 1776585 2176002⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4012 -
C:\Program Files (x86)\Split Files\SplitFiles123.exe"C:\Program Files (x86)\Split Files\SplitFiles123.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3356 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe4⤵
- Executes dropped EXE
PID:4976
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles123.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles123.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles123.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4744
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD5455efa18f18449a418965184fcde9904
SHA1c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA2563019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA5129b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a
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Filesize
3.2MB
MD5455efa18f18449a418965184fcde9904
SHA1c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA2563019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA5129b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a
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Filesize
806KB
MD54f3db9263ab998737f14cfb0cc7da686
SHA11f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA51260d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d
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Filesize
806KB
MD54f3db9263ab998737f14cfb0cc7da686
SHA11f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA51260d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d
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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