Analysis
- max time kernel
58s - max time network
62s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system - submitted
08/12/2022, 09:24
Static task
static1
Behavioral task
behavioral1
Sample
b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe
Resource
win7-20220901-en
10 signatures
150 seconds
General
- Target b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe
- Size 3.8MB
- Sample221208-lda7jahe55
- SHA256 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4
- MD5 5e4448a5847ad2577f6b4a6145c48b98
- SHA1 0c3438cf104bb5b8fc7b72a518be80bdfb0e8bba
- SHA512 1581df426881440f95e51e2c7f449f6ad4c37a53e7ebdf9048c5e9f16d0c128aa7daa4343b4fa4390d1e91457da675067a16f208f277aa2e1b4f086660a3ded2
- SSDEEP 98304:2pluRCsO7nDzCCeP2hChoWcFjeQNF06xE6fh+COFp3:zAzmtcFjeQNOmRu5
- 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 1272 is-58BUP.tmp 1072 PrintFolders.exe 1548 IRxWSODN3F.exe - Loads dropped DLL 10 IoCs
pid Process 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 1272 is-58BUP.tmp 1272 is-58BUP.tmp 1272 is-58BUP.tmp 1272 is-58BUP.tmp 1072 PrintFolders.exe 1072 PrintFolders.exe 1072 PrintFolders.exe 1548 IRxWSODN3F.exe 1548 IRxWSODN3F.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 9 IoCs
description ioc Process File created C:\Program Files (x86)\PrintFolders\is-4LQAE.tmp is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\is-HEN97.tmp is-58BUP.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-58BUP.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\is-L250O.tmp is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\is-QMOBL.tmp is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\is-8PIDJ.tmp is-58BUP.tmp File created C:\Program Files (x86)\PrintFolders\is-47QBL.tmp is-58BUP.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 976 taskkill.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1072 PrintFolders.exe 1072 PrintFolders.exe 1072 PrintFolders.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 976 taskkill.exe Token: SeRestorePrivilege 1272 is-58BUP.tmp Token: SeBackupPrivilege 1272 is-58BUP.tmp - Suspicious use of WriteProcessMemory 35 IoCs
description pid Process procid_target PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1632 wrote to memory of 1272 1632 b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe 28 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1272 wrote to memory of 1072 1272 is-58BUP.tmp 29 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1548 1072 PrintFolders.exe 30 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1072 wrote to memory of 1736 1072 PrintFolders.exe 33 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35 PID 1736 wrote to memory of 976 1736 cmd.exe 35
Processes
-
C:\Users\Admin\AppData\Local\Temp\b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe"C:\Users\Admin\AppData\Local\Temp\b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1632 -
C:\Users\Admin\AppData\Local\Temp\is-S2BQ1.tmp\is-58BUP.tmp"C:\Users\Admin\AppData\Local\Temp\is-S2BQ1.tmp\is-58BUP.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\b7738538bb63f96968f57448382e1fa813dc521f0396c56ce2a4e568933292c4.exe" 3695798 962562⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1272 -
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1072 -
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IRxWSODN3F.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1548
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:976
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
- Size 6.3MB
- SHA256 eb821783b9469fce0bea286bd4caa7f60d31dc6e7f7623f23c562da49866676f
- MD5 36650c1cd7ced15ddfa798a1c47b09dc
- SHA1 7893873711dfd2589c39ae10cc9414cafb54f95b
- SHA512 ad63dca4096633be17c2c5a8bc69bb111fdc051413ab9fe439af61ee834c0f5f013c62d079482e1f55c53533b15ec565b745f45b7a0b30cd25abcc76833a4a21
- SSDEEP 98304:Qxwjd75PniyBESMqpRobg9XMBzFOxKcYknrmNo4:Qxe75FEnho4
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
- Size 6.3MB
- SHA256 eb821783b9469fce0bea286bd4caa7f60d31dc6e7f7623f23c562da49866676f
- MD5 36650c1cd7ced15ddfa798a1c47b09dc
- SHA1 7893873711dfd2589c39ae10cc9414cafb54f95b
- SHA512 ad63dca4096633be17c2c5a8bc69bb111fdc051413ab9fe439af61ee834c0f5f013c62d079482e1f55c53533b15ec565b745f45b7a0b30cd25abcc76833a4a21
- SSDEEP 98304:Qxwjd75PniyBESMqpRobg9XMBzFOxKcYknrmNo4:Qxe75FEnho4
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-S2BQ1.tmp\is-58BUP.tmp
- Size 687KB
- SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
- MD5 075f33da1ee1e9c480243cac029b3c3e
- SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
- SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
- SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\is-S2BQ1.tmp\is-58BUP.tmp
- Size 687KB
- SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
- MD5 075f33da1ee1e9c480243cac029b3c3e
- SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
- SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
- SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IRxWSODN3F.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}\IRxWSODN3F.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)\PrintFolders\PrintFolders.exe
- Size 6.3MB
- SHA256 eb821783b9469fce0bea286bd4caa7f60d31dc6e7f7623f23c562da49866676f
- MD5 36650c1cd7ced15ddfa798a1c47b09dc
- SHA1 7893873711dfd2589c39ae10cc9414cafb54f95b
- SHA512 ad63dca4096633be17c2c5a8bc69bb111fdc051413ab9fe439af61ee834c0f5f013c62d079482e1f55c53533b15ec565b745f45b7a0b30cd25abcc76833a4a21
- SSDEEP 98304:Qxwjd75PniyBESMqpRobg9XMBzFOxKcYknrmNo4:Qxe75FEnho4
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\PrintFolders\PrintFolders.exe
- Size 6.3MB
- SHA256 eb821783b9469fce0bea286bd4caa7f60d31dc6e7f7623f23c562da49866676f
- MD5 36650c1cd7ced15ddfa798a1c47b09dc
- SHA1 7893873711dfd2589c39ae10cc9414cafb54f95b
- SHA512 ad63dca4096633be17c2c5a8bc69bb111fdc051413ab9fe439af61ee834c0f5f013c62d079482e1f55c53533b15ec565b745f45b7a0b30cd25abcc76833a4a21
- SSDEEP 98304:Qxwjd75PniyBESMqpRobg9XMBzFOxKcYknrmNo4:Qxe75FEnho4
- MD5 SHA1 SHA512 SSDEEP
- Path \Program Files (x86)\PrintFolders\PrintFolders.exe
- Size 6.3MB
- SHA256 eb821783b9469fce0bea286bd4caa7f60d31dc6e7f7623f23c562da49866676f
- MD5 36650c1cd7ced15ddfa798a1c47b09dc
- SHA1 7893873711dfd2589c39ae10cc9414cafb54f95b
- SHA512 ad63dca4096633be17c2c5a8bc69bb111fdc051413ab9fe439af61ee834c0f5f013c62d079482e1f55c53533b15ec565b745f45b7a0b30cd25abcc76833a4a21
- SSDEEP 98304:Qxwjd75PniyBESMqpRobg9XMBzFOxKcYknrmNo4:Qxe75FEnho4
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-S2BQ1.tmp\is-58BUP.tmp
- Size 687KB
- SHA256 cec47d181cf1dad856463fc237ead179ffa5ab1f2aeeec442a99ee83c7db5cb2
- MD5 075f33da1ee1e9c480243cac029b3c3e
- SHA1 496cba41dd1b8878f7e10c3affb293231ca97ed3
- SHA512 3c90572fa0151a9c1d557109f995f2093b9a043808675bd6ff6fd543bf364d826be04d0dfd60062670e4e8edb8f7b24f8bbd5a5f056c3f628aacf2175c3fe8db
- SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv6jfxOM:y5NoqWolrP837JzHvA6yknyWFxvwxOM
- MD5 SHA1 SHA512 SSDEEP
- Path \Users\Admin\AppData\Local\Temp\is-TCUAD.tmp\_iscrypt.dll
- Size 2KB
- SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
- MD5 a69559718ab506675e907fe49deb71e9
- SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
- SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
- MD5 SHA1 SHA512
- Path \Users\Admin\AppData\Local\Temp\is-TCUAD.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-TCUAD.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}\IRxWSODN3F.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}\IRxWSODN3F.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}\IRxWSODN3F.exe
- Size 72KB
- SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
- MD5 3fb36cb0b7172e5298d2992d42984d06
- SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
- SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
- SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
- MD5 SHA1 SHA512 SSDEEP