Analysis
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max time kernel
90s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
22/12/2022, 23:01
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
1.8MB
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MD5
a0417afa0eb971b5bba15c903eb18f6a
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SHA1
5d301a73273de3062c7dcfeef21918d8251c430a
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SHA256
9308529c99cfbfd1bc26649ffb60be0afef232bef3d9bc38c10175cb313ea656
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SHA512
68c57ee5f46eff68cd2ab7345e5b1740b3bd9e43a4386f2ed34976b1a78146e0f5d0905e3a81a57c622b298272116e867fcde2b97f3b02e04f7aa3d2c87c83c6
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SSDEEP
49152:7bk7PIvM4mUsQdBrjPYImk6L64MJ4WP7p3c:7b1vlsQHH1aL6rJ4Gdc
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4904 is-P0VR9.tmp 908 SplitFiles117.exe 2116 dhHY6bEU0Fc3U.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation SplitFiles117.exe -
Loads dropped DLL 1 IoCs
pid Process 4904 is-P0VR9.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-7INS7.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-79OFH.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-NVK2D.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\is-KL0RV.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\is-N7TLJ.tmp is-P0VR9.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-H18F4.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\is-K2MKP.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\is-DSLS9.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-AUDQM.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-HNHUI.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-R39R2.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-2LN4J.tmp is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\language\is-MVOS4.tmp is-P0VR9.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-P0VR9.tmp File created C:\Program Files (x86)\Split Files\is-4BN41.tmp is-P0VR9.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 2632 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 908 SplitFiles117.exe 908 SplitFiles117.exe 908 SplitFiles117.exe 908 SplitFiles117.exe 908 SplitFiles117.exe 908 SplitFiles117.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2632 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4848 wrote to memory of 4904 4848 file.exe 80 PID 4848 wrote to memory of 4904 4848 file.exe 80 PID 4848 wrote to memory of 4904 4848 file.exe 80 PID 4904 wrote to memory of 908 4904 is-P0VR9.tmp 81 PID 4904 wrote to memory of 908 4904 is-P0VR9.tmp 81 PID 4904 wrote to memory of 908 4904 is-P0VR9.tmp 81 PID 908 wrote to memory of 2116 908 SplitFiles117.exe 82 PID 908 wrote to memory of 2116 908 SplitFiles117.exe 82 PID 908 wrote to memory of 2116 908 SplitFiles117.exe 82 PID 908 wrote to memory of 4800 908 SplitFiles117.exe 90 PID 908 wrote to memory of 4800 908 SplitFiles117.exe 90 PID 908 wrote to memory of 4800 908 SplitFiles117.exe 90 PID 4800 wrote to memory of 2632 4800 cmd.exe 92 PID 4800 wrote to memory of 2632 4800 cmd.exe 92 PID 4800 wrote to memory of 2632 4800 cmd.exe 92
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:4848 -
C:\Users\Admin\AppData\Local\Temp\is-H5NB4.tmp\is-P0VR9.tmp"C:\Users\Admin\AppData\Local\Temp\is-H5NB4.tmp\is-P0VR9.tmp" /SL4 $1301D8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1597580 1331202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4904 -
C:\Program Files (x86)\Split Files\SplitFiles117.exe"C:\Program Files (x86)\Split Files\SplitFiles117.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:908 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\dhHY6bEU0Fc3U.exe4⤵
- Executes dropped EXE
PID:2116
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles117.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles117.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:4800 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles117.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2632
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD5ccd2157469135c7550e82aaceb2f5e6f
SHA1db9a294729ce21c42b88eb18285f44bc82f12016
SHA256d4db1a221235823281d032f160a85008d0936e0463a3e76cbc7a69c7ff947387
SHA512d54e320bd5dcf1bfc78a8d571ceb5a8976284c2eb55386da2692b138597adecf536db39bb1be3bfb24e2f3caeb6f001263507883e02135630b3399370fab3aac
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Filesize
3.2MB
MD5ccd2157469135c7550e82aaceb2f5e6f
SHA1db9a294729ce21c42b88eb18285f44bc82f12016
SHA256d4db1a221235823281d032f160a85008d0936e0463a3e76cbc7a69c7ff947387
SHA512d54e320bd5dcf1bfc78a8d571ceb5a8976284c2eb55386da2692b138597adecf536db39bb1be3bfb24e2f3caeb6f001263507883e02135630b3399370fab3aac
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
723KB
MD57fd7ec3d32ed2a377fa18e8931475b2e
SHA130b386da1750701f78cbf65550f32661d8a4175f
SHA2560290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334
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Filesize
723KB
MD57fd7ec3d32ed2a377fa18e8931475b2e
SHA130b386da1750701f78cbf65550f32661d8a4175f
SHA2560290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c