Analysis
- max time kernel
56s - max time network
57s - platform
windows7_x64 - resource
win7-20221111-en - resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system - submitted
20/12/2022, 22:16
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
10 signatures
150 seconds
General
- Target file.exe
- Size 1.7MB
- Sample221220-16sdvaec71
- SHA256 9f3e1f6afe99894ebd4357c047746462f6e8040e263bfb480ddfd363a28a61b6
- MD5 8f5040c5faa79969aed7f6e5b993f135
- SHA1 d746576bb7ef05943061d5fcc3793859e80bd847
- SHA512 e11d5d9e9e07b4867d3d14427d0f3d602ba318c8998ca2926f9b24b9dd4878cc722859449efd40c8feb274c992250ef82c75ab2dbc4ef5cd1f3a4c467d3f8f1e
- SSDEEP 49152:i4iaIxohoePZ5U9L8zg494cD6DNYeX99B87wMO9S0XNeViq:inaI7eBu9dNcDD+9oI2iq
- 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 1640 is-8B4V7.tmp 1356 SplitFiles.exe 1508 LKwCHYAy76Wt.exe - Loads dropped DLL 10 IoCs
pid Process 1820 file.exe 1640 is-8B4V7.tmp 1640 is-8B4V7.tmp 1640 is-8B4V7.tmp 1640 is-8B4V7.tmp 1356 SplitFiles.exe 1356 SplitFiles.exe 1356 SplitFiles.exe 1508 LKwCHYAy76Wt.exe 1508 LKwCHYAy76Wt.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\is-E43PH.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\is-PC88T.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-DFI3F.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\is-IT9LD.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\is-VB8GC.tmp is-8B4V7.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-64B3R.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-8F7FB.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-FHAAU.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-FMOM4.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-M28KA.tmp is-8B4V7.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles.exe is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\is-T69C6.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-NL8UB.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-4RFO5.tmp is-8B4V7.tmp File created C:\Program Files (x86)\Split Files\language\is-3R9AE.tmp is-8B4V7.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 1872 taskkill.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1356 SplitFiles.exe 1356 SplitFiles.exe 1356 SplitFiles.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1872 taskkill.exe Token: SeRestorePrivilege 1640 is-8B4V7.tmp Token: SeBackupPrivilege 1640 is-8B4V7.tmp - Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1820 wrote to memory of 1640 1820 file.exe 28 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1640 wrote to memory of 1356 1640 is-8B4V7.tmp 29 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1508 1356 SplitFiles.exe 30 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1356 wrote to memory of 1144 1356 SplitFiles.exe 33 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 cmd.exe 35 PID 1144 wrote to memory of 1872 1144 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:1820 -
C:\Users\Admin\AppData\Local\Temp\is-JRS6N.tmp\is-8B4V7.tmp"C:\Users\Admin\AppData\Local\Temp\is-JRS6N.tmp\is-8B4V7.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1522595 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640 -
C:\Program Files (x86)\Split Files\SplitFiles.exe"C:\Program Files (x86)\Split Files\SplitFiles.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1356 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LKwCHYAy76Wt.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1508
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1144 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1872
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\Split Files\SplitFiles.exe
- Size 3.0MB
- SHA256 4d15811afd4daf87dd4e4f747b73a0aa82e3773caf8b9402f09c594922749bae
- MD5 d1a08176c120db2d6c398301194720c3
- SHA1 75c0001ebbca59b4f225366c7c445566d2ea431b
- SHA512 c8fcea6452d5c7d2064af494631f5d7cd668e5e876636008d865ac8b38a4bec1e2db6e873e28c9ee8a2355c44d68c255b633e68e0dd181bc9f9eba558fc87ecd
- SSDEEP 49152:GvTX/xgvTX/bvTXGovTX4XvTXdvTXFvTX9xvTXpGVK3MmWezhCEuuGH+D/Tt3UMy:sxa0hDGVKOaBqeDLt3UMfHmZ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files (x86)\Split Files\SplitFiles.exe
- Size 3.0MB
- SHA256 4d15811afd4daf87dd4e4f747b73a0aa82e3773caf8b9402f09c594922749bae
- MD5 d1a08176c120db2d6c398301194720c3
- SHA1 75c0001ebbca59b4f225366c7c445566d2ea431b
- SHA512 c8fcea6452d5c7d2064af494631f5d7cd668e5e876636008d865ac8b38a4bec1e2db6e873e28c9ee8a2355c44d68c255b633e68e0dd181bc9f9eba558fc87ecd
- SSDEEP 49152:GvTX/xgvTX/bvTXGovTX4XvTXdvTXFvTX9xvTXpGVK3MmWezhCEuuGH+D/Tt3UMy:sxa0hDGVKOaBqeDLt3UMfHmZ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-JRS6N.tmp\is-8B4V7.tmp
- Size 643KB
- SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
- MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
- SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
- SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
- SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-JRS6N.tmp\is-8B4V7.tmp
- Size 643KB
- SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
- MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
- SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
- SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
- SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\LKwCHYAy76Wt.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}\LKwCHYAy76Wt.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\SplitFiles.exe
- Size 3.0MB
- SHA256 4d15811afd4daf87dd4e4f747b73a0aa82e3773caf8b9402f09c594922749bae
- MD5 d1a08176c120db2d6c398301194720c3
- SHA1 75c0001ebbca59b4f225366c7c445566d2ea431b
- SHA512 c8fcea6452d5c7d2064af494631f5d7cd668e5e876636008d865ac8b38a4bec1e2db6e873e28c9ee8a2355c44d68c255b633e68e0dd181bc9f9eba558fc87ecd
- SSDEEP 49152:GvTX/xgvTX/bvTXGovTX4XvTXdvTXFvTX9xvTXpGVK3MmWezhCEuuGH+D/Tt3UMy:sxa0hDGVKOaBqeDLt3UMfHmZ
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles.exe
- Size 3.0MB
- SHA256 4d15811afd4daf87dd4e4f747b73a0aa82e3773caf8b9402f09c594922749bae
- MD5 d1a08176c120db2d6c398301194720c3
- SHA1 75c0001ebbca59b4f225366c7c445566d2ea431b
- SHA512 c8fcea6452d5c7d2064af494631f5d7cd668e5e876636008d865ac8b38a4bec1e2db6e873e28c9ee8a2355c44d68c255b633e68e0dd181bc9f9eba558fc87ecd
- SSDEEP 49152:GvTX/xgvTX/bvTXGovTX4XvTXdvTXFvTX9xvTXpGVK3MmWezhCEuuGH+D/Tt3UMy:sxa0hDGVKOaBqeDLt3UMfHmZ
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\Split Files\SplitFiles.exe
- Size 3.0MB
- SHA256 4d15811afd4daf87dd4e4f747b73a0aa82e3773caf8b9402f09c594922749bae
- MD5 d1a08176c120db2d6c398301194720c3
- SHA1 75c0001ebbca59b4f225366c7c445566d2ea431b
- SHA512 c8fcea6452d5c7d2064af494631f5d7cd668e5e876636008d865ac8b38a4bec1e2db6e873e28c9ee8a2355c44d68c255b633e68e0dd181bc9f9eba558fc87ecd
- SSDEEP 49152:GvTX/xgvTX/bvTXGovTX4XvTXdvTXFvTX9xvTXpGVK3MmWezhCEuuGH+D/Tt3UMy:sxa0hDGVKOaBqeDLt3UMfHmZ
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-JRS6N.tmp\is-8B4V7.tmp
- Size 643KB
- SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
- MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
- SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
- SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880
- SSDEEP 12288:Oh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvJxO0:05NoqWolrP837JzHvA6yknyWFxvJxO0
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-OB3NT.tmp\_iscrypt.dll
- Size 2KB
- SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
- MD5 a69559718ab506675e907fe49deb71e9
- SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
- SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
- MD5 SHA1 SHA512
- Path \Users\Admin\AppData\Local\Temp\is-OB3NT.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-OB3NT.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}\LKwCHYAy76Wt.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}\LKwCHYAy76Wt.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}\LKwCHYAy76Wt.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP