Analysis
- 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
27/12/2022, 20:05
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
10 signatures
150 seconds
General
- Target file.exe
- Size 2.1MB
- Sample221227-yttp2agb74
- SHA256 1fc6719e79f1e929351af9397ede4c124f43e789ec3a4f23d2ae3e6ded4ab24d
- MD5 707c4dbc17c8fc7c1d1f4b1dd0bf6e61
- SHA1 2b36193e6ac7d561d503004d8dde21556f6b58b4
- SHA512 5440c609f95730b45b87be4a9a3847c9fed4682db9c86bf4cfe73b830a902234de32c0ff402c9a14a205e9439b65ba5eb7c521a222a96d41eeaece736636e30d
- SSDEEP 49152:2iPqfGMBznOox/y9DBvp+xG6s1w0/AfB5KHAul/4cy:2iif5Oo9y9Dzh1rEBwHFk
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Family
-
nymaim
C2
-
45.139.105.171
-
85.31.46.167
Signatures
- Executes dropped EXE 3 IoCs
pid Process 2004 is-2T5F5.tmp 1176 SplitFiles122.exe 680 tbU3Y.exe - Loads dropped DLL 10 IoCs
pid Process 2008 file.exe 2004 is-2T5F5.tmp 2004 is-2T5F5.tmp 2004 is-2T5F5.tmp 2004 is-2T5F5.tmp 1176 SplitFiles122.exe 1176 SplitFiles122.exe 1176 SplitFiles122.exe 680 tbU3Y.exe 680 tbU3Y.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 17 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Split Files\SplitFiles122.exe is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-JNPQA.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-819IJ.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-BRQCF.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-0LCK3.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\is-PC6PE.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-2T5F5.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\is-LASIO.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-8KHUP.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-9TQA9.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-58QE1.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-R1IK3.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\is-UA9T2.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\language\is-4SQDF.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\is-QOCGB.tmp is-2T5F5.tmp File created C:\Program Files (x86)\Split Files\is-1RVG5.tmp is-2T5F5.tmp - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Kills process with taskkill 1 IoCs
pid Process 1644 taskkill.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1176 SplitFiles122.exe 1176 SplitFiles122.exe 1176 SplitFiles122.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1644 taskkill.exe Token: SeRestorePrivilege 2004 is-2T5F5.tmp Token: SeBackupPrivilege 2004 is-2T5F5.tmp - Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2008 wrote to memory of 2004 2008 file.exe 28 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 2004 wrote to memory of 1176 2004 is-2T5F5.tmp 29 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 680 1176 SplitFiles122.exe 30 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 1176 wrote to memory of 820 1176 SplitFiles122.exe 33 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35 PID 820 wrote to memory of 1644 820 cmd.exe 35
Processes
-
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:2008 -
C:\Users\Admin\AppData\Local\Temp\is-S34P0.tmp\is-2T5F5.tmp"C:\Users\Admin\AppData\Local\Temp\is-S34P0.tmp\is-2T5F5.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1903628 1817602⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004 -
C:\Program Files (x86)\Split Files\SplitFiles122.exe"C:\Program Files (x86)\Split Files\SplitFiles122.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:680
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles122.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles122.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:820 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles122.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1644
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\Split Files\SplitFiles122.exe
- Size 3.4MB
- SHA256 58c9a5ac9285a52a14f9acb4fd26f3f0c67ce0c96043abaddab6f7cd51cd1850
- MD5 956ae9b19607b359ceb25dbc6a05a734
- SHA1 4f55f821ff3d5bb1ea1bcf1060203960d33a004c
- SHA512 07eddcb1d0026509b51dc3f265950ad86f656872a3111d24c58c92f3a31f8efd0b3c3df155ec386c89101d9fa57e3c77e9d21087eefd03ad391bf3dbf0cd8c31
- SSDEEP 98304:yD9wYo9HhEAUfMfG4FPvpfzNAs7YT6j+s:yD9Ro9Hh7UVORas
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files (x86)\Split Files\SplitFiles122.exe
- Size 3.4MB
- SHA256 58c9a5ac9285a52a14f9acb4fd26f3f0c67ce0c96043abaddab6f7cd51cd1850
- MD5 956ae9b19607b359ceb25dbc6a05a734
- SHA1 4f55f821ff3d5bb1ea1bcf1060203960d33a004c
- SHA512 07eddcb1d0026509b51dc3f265950ad86f656872a3111d24c58c92f3a31f8efd0b3c3df155ec386c89101d9fa57e3c77e9d21087eefd03ad391bf3dbf0cd8c31
- SSDEEP 98304:yD9wYo9HhEAUfMfG4FPvpfzNAs7YT6j+s:yD9Ro9Hh7UVORas
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-S34P0.tmp\is-2T5F5.tmp
- Size 771KB
- SHA256 4ed952a9e264f273b731350e776a4428a2d84a31f3287587f6c74b232b4b5808
- MD5 1d2b717acbb855c26277c671c91bf0d8
- SHA1 068a69f8ba021451b1796334dca33d5de53d7a05
- SHA512 fb93c58c4c4b10a638e40bf6d668e89e52ce4df4d0d350f2cd6132b713082df7a8c22a135f931e462b2238934f2c254d7d7f4925f75e817ac225914de6727a3e
- SSDEEP 24576:Hmt2bfrP437QzH/A6A7E7dVPez6hfBxO4:HRrP437QzH/A6AY7dVPeqfv/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-S34P0.tmp\is-2T5F5.tmp
- Size 771KB
- SHA256 4ed952a9e264f273b731350e776a4428a2d84a31f3287587f6c74b232b4b5808
- MD5 1d2b717acbb855c26277c671c91bf0d8
- SHA1 068a69f8ba021451b1796334dca33d5de53d7a05
- SHA512 fb93c58c4c4b10a638e40bf6d668e89e52ce4df4d0d350f2cd6132b713082df7a8c22a135f931e462b2238934f2c254d7d7f4925f75e817ac225914de6727a3e
- SSDEEP 24576:Hmt2bfrP437QzH/A6A7E7dVPez6hfBxO4:HRrP437QzH/A6AY7dVPeqfv/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles122.exe
- Size 3.4MB
- SHA256 58c9a5ac9285a52a14f9acb4fd26f3f0c67ce0c96043abaddab6f7cd51cd1850
- MD5 956ae9b19607b359ceb25dbc6a05a734
- SHA1 4f55f821ff3d5bb1ea1bcf1060203960d33a004c
- SHA512 07eddcb1d0026509b51dc3f265950ad86f656872a3111d24c58c92f3a31f8efd0b3c3df155ec386c89101d9fa57e3c77e9d21087eefd03ad391bf3dbf0cd8c31
- SSDEEP 98304:yD9wYo9HhEAUfMfG4FPvpfzNAs7YT6j+s:yD9Ro9Hh7UVORas
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles122.exe
- Size 3.4MB
- SHA256 58c9a5ac9285a52a14f9acb4fd26f3f0c67ce0c96043abaddab6f7cd51cd1850
- MD5 956ae9b19607b359ceb25dbc6a05a734
- SHA1 4f55f821ff3d5bb1ea1bcf1060203960d33a004c
- SHA512 07eddcb1d0026509b51dc3f265950ad86f656872a3111d24c58c92f3a31f8efd0b3c3df155ec386c89101d9fa57e3c77e9d21087eefd03ad391bf3dbf0cd8c31
- SSDEEP 98304:yD9wYo9HhEAUfMfG4FPvpfzNAs7YT6j+s:yD9Ro9Hh7UVORas
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles122.exe
- Size 3.4MB
- SHA256 58c9a5ac9285a52a14f9acb4fd26f3f0c67ce0c96043abaddab6f7cd51cd1850
- MD5 956ae9b19607b359ceb25dbc6a05a734
- SHA1 4f55f821ff3d5bb1ea1bcf1060203960d33a004c
- SHA512 07eddcb1d0026509b51dc3f265950ad86f656872a3111d24c58c92f3a31f8efd0b3c3df155ec386c89101d9fa57e3c77e9d21087eefd03ad391bf3dbf0cd8c31
- SSDEEP 98304:yD9wYo9HhEAUfMfG4FPvpfzNAs7YT6j+s:yD9Ro9Hh7UVORas
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-LCL7C.tmp\_iscrypt.dll
- Size 2KB
- SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
- MD5 a69559718ab506675e907fe49deb71e9
- SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
- SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
- MD5 SHA1 SHA512
- Path \Users\Admin\AppData\Local\Temp\is-LCL7C.tmp\_isetup\_shfoldr.dll
- Size 22KB
- SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
- MD5 92dc6ef532fbb4a5c3201469a5b5eb63
- SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
- SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
- SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-LCL7C.tmp\_isetup\_shfoldr.dll
- Size 22KB
- SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
- MD5 92dc6ef532fbb4a5c3201469a5b5eb63
- SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
- SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
- SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-S34P0.tmp\is-2T5F5.tmp
- Size 771KB
- SHA256 4ed952a9e264f273b731350e776a4428a2d84a31f3287587f6c74b232b4b5808
- MD5 1d2b717acbb855c26277c671c91bf0d8
- SHA1 068a69f8ba021451b1796334dca33d5de53d7a05
- SHA512 fb93c58c4c4b10a638e40bf6d668e89e52ce4df4d0d350f2cd6132b713082df7a8c22a135f931e462b2238934f2c254d7d7f4925f75e817ac225914de6727a3e
- SSDEEP 24576:Hmt2bfrP437QzH/A6A7E7dVPez6hfBxO4:HRrP437QzH/A6AY7dVPeqfv/
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\tbU3Y.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP