Analysis
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max time kernel
89s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29/12/2022, 08:39
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
1.9MB
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MD5
9fbb43df1a78855ac47a37d5c4f7c379
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SHA1
e5338d88ca19e5ab3c1cc37f553296582920e99c
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SHA256
cb918082da7baa66df0ea914cad745f2be2f51774c18130f1752962a8ddce024
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SHA512
5017b318822ca80545599e08be01bf23b5366d7aeebbf48fb88b2f88d3042f6e8670184efa00c463abd8efbb4812ac18b69f1dea20b1bad58e8f4208e3f2def8
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SSDEEP
24576:SpnisF6lyrTjlj/CcqcJJWiS19XbWrqtr6+UOevmuBGE9g+V7hnK66m6wTp38:QidlglJpS1R7COevmMga7AUNM
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2752 is-N3QCD.tmp 2200 SplitFiles124.exe 3328 qSZrzW6Pk8R.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation SplitFiles124.exe -
Loads dropped DLL 1 IoCs
pid Process 2752 is-N3QCD.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-BJOQI.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-DVV3F.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-B0UJJ.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\is-1VAKT.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-MK487.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\is-LCRUJ.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-UC7UQ.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-3HQI7.tmp is-N3QCD.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles124.exe is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-K6746.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\is-BE5T1.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-UAIDI.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\language\is-0UCGB.tmp is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\is-ETMGU.tmp is-N3QCD.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-N3QCD.tmp File created C:\Program Files (x86)\Split Files\is-QUQDV.tmp is-N3QCD.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 4244 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2200 SplitFiles124.exe 2200 SplitFiles124.exe 2200 SplitFiles124.exe 2200 SplitFiles124.exe 2200 SplitFiles124.exe 2200 SplitFiles124.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4244 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4628 wrote to memory of 2752 4628 file.exe 82 PID 4628 wrote to memory of 2752 4628 file.exe 82 PID 4628 wrote to memory of 2752 4628 file.exe 82 PID 2752 wrote to memory of 2200 2752 is-N3QCD.tmp 83 PID 2752 wrote to memory of 2200 2752 is-N3QCD.tmp 83 PID 2752 wrote to memory of 2200 2752 is-N3QCD.tmp 83 PID 2200 wrote to memory of 3328 2200 SplitFiles124.exe 84 PID 2200 wrote to memory of 3328 2200 SplitFiles124.exe 84 PID 2200 wrote to memory of 3328 2200 SplitFiles124.exe 84 PID 2200 wrote to memory of 2272 2200 SplitFiles124.exe 92 PID 2200 wrote to memory of 2272 2200 SplitFiles124.exe 92 PID 2200 wrote to memory of 2272 2200 SplitFiles124.exe 92 PID 2272 wrote to memory of 4244 2272 cmd.exe 94 PID 2272 wrote to memory of 4244 2272 cmd.exe 94 PID 2272 wrote to memory of 4244 2272 cmd.exe 94
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:4628 -
C:\Users\Admin\AppData\Local\Temp\is-TV886.tmp\is-N3QCD.tmp"C:\Users\Admin\AppData\Local\Temp\is-TV886.tmp\is-N3QCD.tmp" /SL4 $D0062 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1778809 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Program Files (x86)\Split Files\SplitFiles124.exe"C:\Program Files (x86)\Split Files\SplitFiles124.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2200 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\qSZrzW6Pk8R.exe4⤵
- Executes dropped EXE
PID:3328
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles124.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles124.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:2272 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles124.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4244
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.3MB
MD5131a98dec8503f2cf89f6a84281e7055
SHA10c84432021bd8eb3152158d8dfef5d48be2ebafc
SHA2567147fe48be21df1d030962afbd1e04e80ecc08f6c4977b8d2ac6146cf18055a5
SHA5121242275add0fe5d334f3dcb0c31b4c97cb9a43879bb5fa309d07c823ba41de5af50640cc5f6c92d09d3f880534bfb19994a8d31d881d805e9f4da0a562989be8
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Filesize
3.3MB
MD5131a98dec8503f2cf89f6a84281e7055
SHA10c84432021bd8eb3152158d8dfef5d48be2ebafc
SHA2567147fe48be21df1d030962afbd1e04e80ecc08f6c4977b8d2ac6146cf18055a5
SHA5121242275add0fe5d334f3dcb0c31b4c97cb9a43879bb5fa309d07c823ba41de5af50640cc5f6c92d09d3f880534bfb19994a8d31d881d805e9f4da0a562989be8
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
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Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c