Analysis
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max time kernel
91s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23/12/2022, 04:46
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
30b508f6dc027146294323c38340b91d
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SHA1
1e2f8e8b0c6c9d5ed099427a84d82fc2f324f991
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SHA256
1ff8b741bce38a81972a86ecf7fc78de5b577ff5a936b1d25c170cb91f13566f
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SHA512
08ba4a0849ebc2ea0c0281cb6c543526a4d5aa73d25c654290a6cf85e257ddeade69585c349dc81044c7100a01e10c568562e61bb94c9c3035c18463e0dd5d16
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SSDEEP
49152:HiW6qYXzQDuUeSbTgFfhKfag8moMG82B+DWP7p3t:Hh6qszQ26kFJKft8P62GGdt
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4920 is-5G0NQ.tmp 4248 SplitFiles118.exe 3656 zanyPyC3AB.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation SplitFiles118.exe -
Loads dropped DLL 1 IoCs
pid Process 4920 is-5G0NQ.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-BABUU.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-2UMFK.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-DKFLQ.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\is-UFA48.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\is-HTIVJ.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-UG95U.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-RFKQT.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\is-2D6S0.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\is-RJ0V5.tmp is-5G0NQ.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\is-JK59F.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-HAN0U.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-GEHHD.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-J45AR.tmp is-5G0NQ.tmp File created C:\Program Files (x86)\Split Files\language\is-F1EH0.tmp is-5G0NQ.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe is-5G0NQ.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 4032 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4248 SplitFiles118.exe 4248 SplitFiles118.exe 4248 SplitFiles118.exe 4248 SplitFiles118.exe 4248 SplitFiles118.exe 4248 SplitFiles118.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4032 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4800 wrote to memory of 4920 4800 file.exe 82 PID 4800 wrote to memory of 4920 4800 file.exe 82 PID 4800 wrote to memory of 4920 4800 file.exe 82 PID 4920 wrote to memory of 4248 4920 is-5G0NQ.tmp 83 PID 4920 wrote to memory of 4248 4920 is-5G0NQ.tmp 83 PID 4920 wrote to memory of 4248 4920 is-5G0NQ.tmp 83 PID 4248 wrote to memory of 3656 4248 SplitFiles118.exe 84 PID 4248 wrote to memory of 3656 4248 SplitFiles118.exe 84 PID 4248 wrote to memory of 3656 4248 SplitFiles118.exe 84 PID 4248 wrote to memory of 3844 4248 SplitFiles118.exe 87 PID 4248 wrote to memory of 3844 4248 SplitFiles118.exe 87 PID 4248 wrote to memory of 3844 4248 SplitFiles118.exe 87 PID 3844 wrote to memory of 4032 3844 cmd.exe 89 PID 3844 wrote to memory of 4032 3844 cmd.exe 89 PID 3844 wrote to memory of 4032 3844 cmd.exe 89
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:4800 -
C:\Users\Admin\AppData\Local\Temp\is-OENP9.tmp\is-5G0NQ.tmp"C:\Users\Admin\AppData\Local\Temp\is-OENP9.tmp\is-5G0NQ.tmp" /SL4 $E005E "C:\Users\Admin\AppData\Local\Temp\file.exe" 1634438 1331202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Program Files (x86)\Split Files\SplitFiles118.exe"C:\Program Files (x86)\Split Files\SplitFiles118.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4248 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\zanyPyC3AB.exe4⤵
- Executes dropped EXE
PID:3656
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles118.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles118.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:3844 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles118.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4032
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD5b9cce0a605099922a9476d79a103da9c
SHA19f4d5407f75c9ebd244f2512d2ad75315dc3973d
SHA25621013d3b90555ba60649d94bea22d2695db94135f03a272807eb0ec6cbf9d0d6
SHA5129592e967549823cacbe73f977fb99509bc71c0cd1b7bdc760f26836e444599a45554c274ee2326c6d20696652e694903c8e014b8cab000ef0d8fd52b7f5de793
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Filesize
3.1MB
MD5b9cce0a605099922a9476d79a103da9c
SHA19f4d5407f75c9ebd244f2512d2ad75315dc3973d
SHA25621013d3b90555ba60649d94bea22d2695db94135f03a272807eb0ec6cbf9d0d6
SHA5129592e967549823cacbe73f977fb99509bc71c0cd1b7bdc760f26836e444599a45554c274ee2326c6d20696652e694903c8e014b8cab000ef0d8fd52b7f5de793
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c