Analysis
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max time kernel
58s -
max time network
60s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
29/12/2022, 02:23
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
b13cf366b7409d4576ac1cb54e7975c2
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SHA1
597a42c37218cdd389119146eaaa88be79cbcf03
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SHA256
b04baa3e52d19b9dd594df416a02ae2be363293734d4b99904d69e2fb07ffe42
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SHA512
9d8767dd62e3f3964bf3b0a6a307b4cca7cc055adff62258cc43e5088e0960b1ef766f7c7bb1287e81ec3f98219d48af12622c70d6e73c9b198783118cfeea99
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SSDEEP
49152:AiyvIhX3HLWVT8hj+fAmSVf6K6qkbDDTr1Nw:AijLWVohj+fAmSZ6n/nPM
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1756 is-HKASK.tmp 1472 SplitFiles123.exe 1456 aTweQp.exe -
Loads dropped DLL 10 IoCs
pid Process 1204 file.exe 1756 is-HKASK.tmp 1756 is-HKASK.tmp 1756 is-HKASK.tmp 1756 is-HKASK.tmp 1472 SplitFiles123.exe 1472 SplitFiles123.exe 1472 SplitFiles123.exe 1456 aTweQp.exe 1456 aTweQp.exe -
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 opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-HKASK.tmp File created C:\Program Files (x86)\Split Files\is-3NCBM.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-APEF6.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-0CEIT.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\is-NO3SE.tmp is-HKASK.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe is-HKASK.tmp File created C:\Program Files (x86)\Split Files\is-MC3EJ.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-8MDC1.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-PQVOH.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\is-08RIA.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\is-IKPRA.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-1CPMF.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-3BH34.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-AGL4P.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-DEUS2.tmp is-HKASK.tmp File created C:\Program Files (x86)\Split Files\language\is-8M5JA.tmp is-HKASK.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 1088 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1472 SplitFiles123.exe 1472 SplitFiles123.exe 1472 SplitFiles123.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1088 taskkill.exe Token: SeRestorePrivilege 1756 is-HKASK.tmp Token: SeBackupPrivilege 1756 is-HKASK.tmp -
Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1204 wrote to memory of 1756 1204 file.exe 28 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1756 wrote to memory of 1472 1756 is-HKASK.tmp 29 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 1456 1472 SplitFiles123.exe 30 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 1472 wrote to memory of 268 1472 SplitFiles123.exe 33 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35 PID 268 wrote to memory of 1088 268 cmd.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Users\Admin\AppData\Local\Temp\is-TJINS.tmp\is-HKASK.tmp"C:\Users\Admin\AppData\Local\Temp\is-TJINS.tmp\is-HKASK.tmp" /SL4 $80022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1606958 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Program Files (x86)\Split Files\SplitFiles123.exe"C:\Program Files (x86)\Split Files\SplitFiles123.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\aTweQp.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1456
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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:268 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles123.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1088
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.1MB
MD5fa53155e4d60651618154ba13892b254
SHA115d77714a88aa339d0a895183a528d907b7697ba
SHA25689192fec4b9c3b6ad775fb0013ad8b578d6b900a6203fcacfa1e5cace480ff67
SHA512b698e978902adefe689969e6477917de8ac8d53b6db3b0868ab3c354e3b2fb488d1214eb95c8aaa9df13a3cec7b3c3e207e559268976a7878e41c69002ecc10d
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Filesize
3.1MB
MD5fa53155e4d60651618154ba13892b254
SHA115d77714a88aa339d0a895183a528d907b7697ba
SHA25689192fec4b9c3b6ad775fb0013ad8b578d6b900a6203fcacfa1e5cace480ff67
SHA512b698e978902adefe689969e6477917de8ac8d53b6db3b0868ab3c354e3b2fb488d1214eb95c8aaa9df13a3cec7b3c3e207e559268976a7878e41c69002ecc10d
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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
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Filesize
3.1MB
MD5fa53155e4d60651618154ba13892b254
SHA115d77714a88aa339d0a895183a528d907b7697ba
SHA25689192fec4b9c3b6ad775fb0013ad8b578d6b900a6203fcacfa1e5cace480ff67
SHA512b698e978902adefe689969e6477917de8ac8d53b6db3b0868ab3c354e3b2fb488d1214eb95c8aaa9df13a3cec7b3c3e207e559268976a7878e41c69002ecc10d
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Filesize
3.1MB
MD5fa53155e4d60651618154ba13892b254
SHA115d77714a88aa339d0a895183a528d907b7697ba
SHA25689192fec4b9c3b6ad775fb0013ad8b578d6b900a6203fcacfa1e5cace480ff67
SHA512b698e978902adefe689969e6477917de8ac8d53b6db3b0868ab3c354e3b2fb488d1214eb95c8aaa9df13a3cec7b3c3e207e559268976a7878e41c69002ecc10d
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Filesize
3.1MB
MD5fa53155e4d60651618154ba13892b254
SHA115d77714a88aa339d0a895183a528d907b7697ba
SHA25689192fec4b9c3b6ad775fb0013ad8b578d6b900a6203fcacfa1e5cace480ff67
SHA512b698e978902adefe689969e6477917de8ac8d53b6db3b0868ab3c354e3b2fb488d1214eb95c8aaa9df13a3cec7b3c3e207e559268976a7878e41c69002ecc10d
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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
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c