Analysis
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max time kernel
146s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
28/03/2023, 14:03
Static task
static1
Behavioral task
behavioral1
Sample
1991KLI.jar
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
1991KLI.jar
Resource
win10v2004-20230220-en
General
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Target
1991KLI.jar
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Size
184KB
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MD5
6ac278a78a0e5ce73ebb9a87e07142cf
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SHA1
8bf808f6368397af37ed00bcb4ae2818f21b891f
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SHA256
f0c11d41addcfee21da8c2abfd557be8dedee50e51da47b9a8a314bda7ff6a56
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SHA512
a5f86ead030b0107e7677430c22e5bf089812947cf96c689b8fbecb8109b6260a2103c5a4707629b9054228d77bd53b22f4bdadababd0fbf51d8ac55356620b3
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SSDEEP
3072:bBuguWF0v3FlzdAYJi7MYT1SEaON9BF3cYD1JqaVeqbZAgvj3kCQ+8hwOIhZYbZP:ggJF0v3FlzdDS8ET9BF3cWRVeqdAgvo5
Malware Config
Signatures
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1991KLI.jar java.exe -
Loads dropped DLL 2 IoCs
pid Process 2784 java.exe 3832 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1991KLI = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\1991KLI.jar\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1991KLI = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\1991KLI.jar\"" java.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 56 ip-api.com -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4216 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 4120 WMIC.exe Token: SeSecurityPrivilege 4120 WMIC.exe Token: SeTakeOwnershipPrivilege 4120 WMIC.exe Token: SeLoadDriverPrivilege 4120 WMIC.exe Token: SeSystemProfilePrivilege 4120 WMIC.exe Token: SeSystemtimePrivilege 4120 WMIC.exe Token: SeProfSingleProcessPrivilege 4120 WMIC.exe Token: SeIncBasePriorityPrivilege 4120 WMIC.exe Token: SeCreatePagefilePrivilege 4120 WMIC.exe Token: SeBackupPrivilege 4120 WMIC.exe Token: SeRestorePrivilege 4120 WMIC.exe Token: SeShutdownPrivilege 4120 WMIC.exe Token: SeDebugPrivilege 4120 WMIC.exe Token: SeSystemEnvironmentPrivilege 4120 WMIC.exe Token: SeRemoteShutdownPrivilege 4120 WMIC.exe Token: SeUndockPrivilege 4120 WMIC.exe Token: SeManageVolumePrivilege 4120 WMIC.exe Token: 33 4120 WMIC.exe Token: 34 4120 WMIC.exe Token: 35 4120 WMIC.exe Token: 36 4120 WMIC.exe Token: SeIncreaseQuotaPrivilege 4120 WMIC.exe Token: SeSecurityPrivilege 4120 WMIC.exe Token: SeTakeOwnershipPrivilege 4120 WMIC.exe Token: SeLoadDriverPrivilege 4120 WMIC.exe Token: SeSystemProfilePrivilege 4120 WMIC.exe Token: SeSystemtimePrivilege 4120 WMIC.exe Token: SeProfSingleProcessPrivilege 4120 WMIC.exe Token: SeIncBasePriorityPrivilege 4120 WMIC.exe Token: SeCreatePagefilePrivilege 4120 WMIC.exe Token: SeBackupPrivilege 4120 WMIC.exe Token: SeRestorePrivilege 4120 WMIC.exe Token: SeShutdownPrivilege 4120 WMIC.exe Token: SeDebugPrivilege 4120 WMIC.exe Token: SeSystemEnvironmentPrivilege 4120 WMIC.exe Token: SeRemoteShutdownPrivilege 4120 WMIC.exe Token: SeUndockPrivilege 4120 WMIC.exe Token: SeManageVolumePrivilege 4120 WMIC.exe Token: 33 4120 WMIC.exe Token: 34 4120 WMIC.exe Token: 35 4120 WMIC.exe Token: 36 4120 WMIC.exe Token: SeIncreaseQuotaPrivilege 1148 WMIC.exe Token: SeSecurityPrivilege 1148 WMIC.exe Token: SeTakeOwnershipPrivilege 1148 WMIC.exe Token: SeLoadDriverPrivilege 1148 WMIC.exe Token: SeSystemProfilePrivilege 1148 WMIC.exe Token: SeSystemtimePrivilege 1148 WMIC.exe Token: SeProfSingleProcessPrivilege 1148 WMIC.exe Token: SeIncBasePriorityPrivilege 1148 WMIC.exe Token: SeCreatePagefilePrivilege 1148 WMIC.exe Token: SeBackupPrivilege 1148 WMIC.exe Token: SeRestorePrivilege 1148 WMIC.exe Token: SeShutdownPrivilege 1148 WMIC.exe Token: SeDebugPrivilege 1148 WMIC.exe Token: SeSystemEnvironmentPrivilege 1148 WMIC.exe Token: SeRemoteShutdownPrivilege 1148 WMIC.exe Token: SeUndockPrivilege 1148 WMIC.exe Token: SeManageVolumePrivilege 1148 WMIC.exe Token: 33 1148 WMIC.exe Token: 34 1148 WMIC.exe Token: 35 1148 WMIC.exe Token: 36 1148 WMIC.exe Token: SeIncreaseQuotaPrivilege 1148 WMIC.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 3384 wrote to memory of 2784 3384 java.exe 88 PID 3384 wrote to memory of 2784 3384 java.exe 88 PID 2784 wrote to memory of 1284 2784 java.exe 92 PID 2784 wrote to memory of 1284 2784 java.exe 92 PID 2784 wrote to memory of 3832 2784 java.exe 93 PID 2784 wrote to memory of 3832 2784 java.exe 93 PID 1284 wrote to memory of 4216 1284 cmd.exe 96 PID 1284 wrote to memory of 4216 1284 cmd.exe 96 PID 3832 wrote to memory of 3868 3832 java.exe 97 PID 3832 wrote to memory of 3868 3832 java.exe 97 PID 3868 wrote to memory of 4120 3868 cmd.exe 99 PID 3868 wrote to memory of 4120 3868 cmd.exe 99 PID 3832 wrote to memory of 2844 3832 java.exe 100 PID 3832 wrote to memory of 2844 3832 java.exe 100 PID 2844 wrote to memory of 1148 2844 cmd.exe 102 PID 2844 wrote to memory of 1148 2844 cmd.exe 102 PID 3832 wrote to memory of 2792 3832 java.exe 103 PID 3832 wrote to memory of 2792 3832 java.exe 103 PID 2792 wrote to memory of 2668 2792 cmd.exe 105 PID 2792 wrote to memory of 2668 2792 cmd.exe 105 PID 3832 wrote to memory of 3516 3832 java.exe 106 PID 3832 wrote to memory of 3516 3832 java.exe 106 PID 3516 wrote to memory of 1852 3516 cmd.exe 108 PID 3516 wrote to memory of 1852 3516 cmd.exe 108 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\ProgramData\Oracle\Java\javapath\java.exejava -jar C:\Users\Admin\AppData\Local\Temp\1991KLI.jar1⤵
- Suspicious use of WriteProcessMemory
PID:3384 -
C:\Program Files\Java\jre1.8.0_66\bin\java.exe"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\1991KLI.jar"2⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\1991KLI.jar"3⤵
- Suspicious use of WriteProcessMemory
PID:1284 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\1991KLI.jar"4⤵
- Creates scheduled task(s)
PID:4216
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C:\Program Files\Java\jre1.8.0_66\bin\java.exe"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\1991KLI.jar"3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:3868 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list5⤵
- Suspicious use of AdjustPrivilegeToken
PID:4120
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list5⤵
- Suspicious use of AdjustPrivilegeToken
PID:1148
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:2792 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list5⤵PID:2668
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:3516 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list5⤵PID:1852
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
50B
MD534c6e7451b8ae96d55760e719f6677ba
SHA1497fb5a8cbd536106bd865d09fc6dcb77b65aa8d
SHA256dfcc076930cab1dcdfbdfd3ecb83dae6796c9edfc0b919d03836c94f2bde05e7
SHA5122c691b9db497e01b2feba7347501137bcf5274b6d02c03002d52b797d7be68daf55ecb66f503f5d17b1fb803788f1678c9c4bbc29b243b8bb5f0007dbfa620d6
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Filesize
50B
MD5c5ad746ece1dd50343e81cf0fd2a8010
SHA19c360c2e9caa1d0c16e63044834a6c35a2e8d4b0
SHA256433f074c39bf8532d534e963b685163600dc5ed3672a7ec016c7f42c86052d62
SHA512e820bb9c64bb601da705a896b2ab84aa181b76acf58a983c03602cabff42c8d5a0823b1882b016837b80cbfa085fd117eff277b5359a69860801dec3c3d78c04
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Filesize
184KB
MD56ac278a78a0e5ce73ebb9a87e07142cf
SHA18bf808f6368397af37ed00bcb4ae2818f21b891f
SHA256f0c11d41addcfee21da8c2abfd557be8dedee50e51da47b9a8a314bda7ff6a56
SHA512a5f86ead030b0107e7677430c22e5bf089812947cf96c689b8fbecb8109b6260a2103c5a4707629b9054228d77bd53b22f4bdadababd0fbf51d8ac55356620b3
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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Filesize
184KB
MD56ac278a78a0e5ce73ebb9a87e07142cf
SHA18bf808f6368397af37ed00bcb4ae2818f21b891f
SHA256f0c11d41addcfee21da8c2abfd557be8dedee50e51da47b9a8a314bda7ff6a56
SHA512a5f86ead030b0107e7677430c22e5bf089812947cf96c689b8fbecb8109b6260a2103c5a4707629b9054228d77bd53b22f4bdadababd0fbf51d8ac55356620b3
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Filesize
184KB
MD56ac278a78a0e5ce73ebb9a87e07142cf
SHA18bf808f6368397af37ed00bcb4ae2818f21b891f
SHA256f0c11d41addcfee21da8c2abfd557be8dedee50e51da47b9a8a314bda7ff6a56
SHA512a5f86ead030b0107e7677430c22e5bf089812947cf96c689b8fbecb8109b6260a2103c5a4707629b9054228d77bd53b22f4bdadababd0fbf51d8ac55356620b3
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1529757233-3489015626-3409890339-1000\83aa4cc77f591dfc2374580bbd95f6ba_2007c659-eb65-4631-bf41-16f7650120a3
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
1.4MB
MD5acfb5b5fd9ee10bf69497792fd469f85
SHA10e0845217c4907822403912ad6828d8e0b256208
SHA256b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
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Filesize
2.6MB
MD52f4a99c2758e72ee2b59a73586a2322f
SHA1af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA25624d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
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Filesize
4.1MB
MD5b33387e15ab150a7bf560abdc73c3bec
SHA166b8075784131f578ef893fd7674273f709b9a4c
SHA2562eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA51225cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
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Filesize
772KB
MD5e1aa38a1e78a76a6de73efae136cdb3a
SHA1c463da71871f780b2e2e5dba115d43953b537daf
SHA2562ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d
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Filesize
1.4MB
MD5acfb5b5fd9ee10bf69497792fd469f85
SHA10e0845217c4907822403912ad6828d8e0b256208
SHA256b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
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Filesize
2.6MB
MD52f4a99c2758e72ee2b59a73586a2322f
SHA1af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA25624d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
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Filesize
4.1MB
MD5b33387e15ab150a7bf560abdc73c3bec
SHA166b8075784131f578ef893fd7674273f709b9a4c
SHA2562eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA51225cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
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Filesize
772KB
MD5e1aa38a1e78a76a6de73efae136cdb3a
SHA1c463da71871f780b2e2e5dba115d43953b537daf
SHA2562ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d