Analysis
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max time kernel
138s -
max time network
141s -
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, 09:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
1.8MB
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MD5
bdd80f7b1916c332adbc099640f3d4b3
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SHA1
cae328ab6d092a273f456865b369e08fc80fc015
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SHA256
0f1e70105d264da121d1617114a5231e868a9743b0d32d66eb9258ff63a6b746
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SHA512
ad77dd6351cf8df0638541dcb429eed0295d01275f9d8f67d2f7c36409e5daeb4c54b36636baa9dcde119e3f57f1101fc8edb9b7c3c9986c5912a5f30ad199cc
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SSDEEP
49152:giJZzsD14HDgH1Sy0kqRsIcO7Cq+Uqy3mmsNs:giJBsDOHkH8lRs+CqzlFh
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1248 is-QGS7N.tmp 4512 SplitFiles124.exe 3256 4kru0lUyDbMR4.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation SplitFiles124.exe -
Loads dropped DLL 1 IoCs
pid Process 1248 is-QGS7N.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-KI9VO.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-KBRGM.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\is-5UTLM.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-CLO9D.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-UDEDK.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-716MN.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-QNH58.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-94I3D.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\is-9608O.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\is-LCS6V.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-UM3G8.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\is-PN4VQ.tmp is-QGS7N.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-QGS7N.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles124.exe is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\is-0E8BH.tmp is-QGS7N.tmp File created C:\Program Files (x86)\Split Files\language\is-QOVL8.tmp is-QGS7N.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 780 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4512 SplitFiles124.exe 4512 SplitFiles124.exe 4512 SplitFiles124.exe 4512 SplitFiles124.exe 4512 SplitFiles124.exe 4512 SplitFiles124.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 780 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 5000 wrote to memory of 1248 5000 file.exe 83 PID 5000 wrote to memory of 1248 5000 file.exe 83 PID 5000 wrote to memory of 1248 5000 file.exe 83 PID 1248 wrote to memory of 4512 1248 is-QGS7N.tmp 84 PID 1248 wrote to memory of 4512 1248 is-QGS7N.tmp 84 PID 1248 wrote to memory of 4512 1248 is-QGS7N.tmp 84 PID 4512 wrote to memory of 3256 4512 SplitFiles124.exe 85 PID 4512 wrote to memory of 3256 4512 SplitFiles124.exe 85 PID 4512 wrote to memory of 3256 4512 SplitFiles124.exe 85 PID 4512 wrote to memory of 3592 4512 SplitFiles124.exe 93 PID 4512 wrote to memory of 3592 4512 SplitFiles124.exe 93 PID 4512 wrote to memory of 3592 4512 SplitFiles124.exe 93 PID 3592 wrote to memory of 780 3592 cmd.exe 95 PID 3592 wrote to memory of 780 3592 cmd.exe 95 PID 3592 wrote to memory of 780 3592 cmd.exe 95
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:5000 -
C:\Users\Admin\AppData\Local\Temp\is-6M0CN.tmp\is-QGS7N.tmp"C:\Users\Admin\AppData\Local\Temp\is-6M0CN.tmp\is-QGS7N.tmp" /SL4 $70116 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1600030 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1248 -
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:4512 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\4kru0lUyDbMR4.exe4⤵
- Executes dropped EXE
PID:3256
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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:3592 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles124.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:780
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD5d63e027b01ffe607932e779310a03ba5
SHA1cd9f74759ff2b00a51c6bc1a0f9edb0a6090156a
SHA256b3be39f5577639279e92ccde2a9e056f220daef2316e4fcfaf196117fec9819c
SHA5122d6042eca03ad719f89d250cb853fcba924c56aca24fada727bc9a52028f1b8ce5e1e2e1886295e12d8484518e72ba0e06e0d1936edc7d00841d52e76140f0bb
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Filesize
3.1MB
MD5d63e027b01ffe607932e779310a03ba5
SHA1cd9f74759ff2b00a51c6bc1a0f9edb0a6090156a
SHA256b3be39f5577639279e92ccde2a9e056f220daef2316e4fcfaf196117fec9819c
SHA5122d6042eca03ad719f89d250cb853fcba924c56aca24fada727bc9a52028f1b8ce5e1e2e1886295e12d8484518e72ba0e06e0d1936edc7d00841d52e76140f0bb
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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
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