Analysis
- max time kernel
64s - max time network
67s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system - submitted
22/12/2022, 22:31
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
10 signatures
150 seconds
General
- Target file.exe
- Size 1.8MB
- Sample221222-2fc2xaaf2y
- SHA256 cfe33a88d906c64ae91117ab5437d5d28f718a211c2f4f3cf79317af241ec125
- MD5 f79379dd74200f24a5b29355c4a98780
- SHA1 4507a067f45674d621d48f1a655be32a1f6b24f4
- SHA512 bb9bdbf3f5aa49aec5740e9ac14d7c864ff09106bcc23633413d2ca90ae5ab0f1eb24c2c53604efaa006578f5c7b06629df1fef84d568d725530eb2c0f43b5df
- SSDEEP 49152:bfxxknvGzoKDXVZgmLPYnRd5DkOr7f8L7GrAuWP7p3r:bfxxkqoxnXf8L7sAuGdr
- 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 1528 is-RJAVR.tmp 2000 SplitFiles117.exe 1300 AMrtHpIgaySgif.exe - Loads dropped DLL 10 IoCs
pid Process 1512 file.exe 1528 is-RJAVR.tmp 1528 is-RJAVR.tmp 1528 is-RJAVR.tmp 1528 is-RJAVR.tmp 2000 SplitFiles117.exe 2000 SplitFiles117.exe 2000 SplitFiles117.exe 1300 AMrtHpIgaySgif.exe 1300 AMrtHpIgaySgif.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 created C:\Program Files (x86)\Split Files\language\is-SENMG.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\is-R8HAO.tmp is-RJAVR.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-RJAVR.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-2PFF0.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\is-I2PMK.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-OD2N1.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\is-7MQIP.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\is-FV11P.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-VVM54.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-BC4UO.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-MA2KV.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-K8B4L.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-H8U7G.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\language\is-RK87C.tmp is-RJAVR.tmp File created C:\Program Files (x86)\Split Files\is-K16UL.tmp is-RJAVR.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 1784 taskkill.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2000 SplitFiles117.exe 2000 SplitFiles117.exe 2000 SplitFiles117.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1784 taskkill.exe Token: SeRestorePrivilege 1528 is-RJAVR.tmp Token: SeBackupPrivilege 1528 is-RJAVR.tmp - Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1512 wrote to memory of 1528 1512 file.exe 27 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 1528 wrote to memory of 2000 1528 is-RJAVR.tmp 28 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1300 2000 SplitFiles117.exe 29 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 2000 wrote to memory of 1808 2000 SplitFiles117.exe 32 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34 PID 1808 wrote to memory of 1784 1808 cmd.exe 34
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:1512 -
C:\Users\Admin\AppData\Local\Temp\is-55L69.tmp\is-RJAVR.tmp"C:\Users\Admin\AppData\Local\Temp\is-55L69.tmp\is-RJAVR.tmp" /SL4 $6012A "C:\Users\Admin\AppData\Local\Temp\file.exe" 1597227 1331202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528 -
C:\Program Files (x86)\Split Files\SplitFiles117.exe"C:\Program Files (x86)\Split Files\SplitFiles117.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\AMrtHpIgaySgif.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1300
-
-
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:1808 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles117.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1784
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\Split Files\SplitFiles117.exe
- Size 3.2MB
- SHA256 2f2177ce33d1a4a1a9f5042d9159522af1e648b27100f114f2e79788c249de2c
- MD5 08b63e1bbc661a93fa2b3659d4c79c8b
- SHA1 4678baa789d5dbde2655e382f3f8ec178ad80208
- SHA512 309e982895fd301576f137f5ffdbe939bfb2782c34d11da0e44c229388f51b398afaa7f2b00e8f3c23e4654a6d6ad7829df3981429d965579fd6a9aa415ce6b1
- SSDEEP 98304:hYo1+LjqSDGZzctDQMyOZuJWW3htGYfCR:hYo1+LjqFLy
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files (x86)\Split Files\SplitFiles117.exe
- Size 3.2MB
- SHA256 2f2177ce33d1a4a1a9f5042d9159522af1e648b27100f114f2e79788c249de2c
- MD5 08b63e1bbc661a93fa2b3659d4c79c8b
- SHA1 4678baa789d5dbde2655e382f3f8ec178ad80208
- SHA512 309e982895fd301576f137f5ffdbe939bfb2782c34d11da0e44c229388f51b398afaa7f2b00e8f3c23e4654a6d6ad7829df3981429d965579fd6a9aa415ce6b1
- SSDEEP 98304:hYo1+LjqSDGZzctDQMyOZuJWW3htGYfCR:hYo1+LjqFLy
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-55L69.tmp\is-RJAVR.tmp
- Size 723KB
- SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
- MD5 7fd7ec3d32ed2a377fa18e8931475b2e
- SHA1 30b386da1750701f78cbf65550f32661d8a4175f
- SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334
- SSDEEP 12288:8h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvqewRixOp:O5NoqWolrP837JzHvA6yknyWFxvTwcxi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-55L69.tmp\is-RJAVR.tmp
- Size 723KB
- SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
- MD5 7fd7ec3d32ed2a377fa18e8931475b2e
- SHA1 30b386da1750701f78cbf65550f32661d8a4175f
- SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334
- SSDEEP 12288:8h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvqewRixOp:O5NoqWolrP837JzHvA6yknyWFxvTwcxi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\AMrtHpIgaySgif.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}\AMrtHpIgaySgif.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\SplitFiles117.exe
- Size 3.2MB
- SHA256 2f2177ce33d1a4a1a9f5042d9159522af1e648b27100f114f2e79788c249de2c
- MD5 08b63e1bbc661a93fa2b3659d4c79c8b
- SHA1 4678baa789d5dbde2655e382f3f8ec178ad80208
- SHA512 309e982895fd301576f137f5ffdbe939bfb2782c34d11da0e44c229388f51b398afaa7f2b00e8f3c23e4654a6d6ad7829df3981429d965579fd6a9aa415ce6b1
- SSDEEP 98304:hYo1+LjqSDGZzctDQMyOZuJWW3htGYfCR:hYo1+LjqFLy
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles117.exe
- Size 3.2MB
- SHA256 2f2177ce33d1a4a1a9f5042d9159522af1e648b27100f114f2e79788c249de2c
- MD5 08b63e1bbc661a93fa2b3659d4c79c8b
- SHA1 4678baa789d5dbde2655e382f3f8ec178ad80208
- SHA512 309e982895fd301576f137f5ffdbe939bfb2782c34d11da0e44c229388f51b398afaa7f2b00e8f3c23e4654a6d6ad7829df3981429d965579fd6a9aa415ce6b1
- SSDEEP 98304:hYo1+LjqSDGZzctDQMyOZuJWW3htGYfCR:hYo1+LjqFLy
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles117.exe
- Size 3.2MB
- SHA256 2f2177ce33d1a4a1a9f5042d9159522af1e648b27100f114f2e79788c249de2c
- MD5 08b63e1bbc661a93fa2b3659d4c79c8b
- SHA1 4678baa789d5dbde2655e382f3f8ec178ad80208
- SHA512 309e982895fd301576f137f5ffdbe939bfb2782c34d11da0e44c229388f51b398afaa7f2b00e8f3c23e4654a6d6ad7829df3981429d965579fd6a9aa415ce6b1
- SSDEEP 98304:hYo1+LjqSDGZzctDQMyOZuJWW3htGYfCR:hYo1+LjqFLy
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-55L69.tmp\is-RJAVR.tmp
- Size 723KB
- SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
- MD5 7fd7ec3d32ed2a377fa18e8931475b2e
- SHA1 30b386da1750701f78cbf65550f32661d8a4175f
- SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334
- SSDEEP 12288:8h5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvqewRixOp:O5NoqWolrP837JzHvA6yknyWFxvTwcxi
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-JQFI1.tmp\_iscrypt.dll
- Size 2KB
- SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
- MD5 a69559718ab506675e907fe49deb71e9
- SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
- SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
- MD5 SHA1 SHA512
- Path \Users\Admin\AppData\Local\Temp\is-JQFI1.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-JQFI1.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\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\AMrtHpIgaySgif.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}\AMrtHpIgaySgif.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}\AMrtHpIgaySgif.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP