Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
08-10-2024 22:58
Static task
static1
Behavioral task
behavioral1
Sample
26bbaf5330243120bd7cb98592b723f7_JaffaCakes118.js
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
26bbaf5330243120bd7cb98592b723f7_JaffaCakes118.js
Resource
win10v2004-20241007-en
General
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Target
26bbaf5330243120bd7cb98592b723f7_JaffaCakes118.js
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Size
703KB
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MD5
26bbaf5330243120bd7cb98592b723f7
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SHA1
fa166312e25b3c45bf2d1afe85fe60ea02967b94
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SHA256
3fa3afdac631ebaa1b985f68a8022cde39b60be1e7b02e2cdfbcbf3e73d74472
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SHA512
bf04db80e0ee3e8b3ec07bb78a11c7e7616a89c02379d0714679ed29eee7ed7351637be8244d27292b28583cbbab868c51847776eb05810e9782116c367b3934
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SSDEEP
6144:SZTwdqO2MV4EhguLGNBNFH6YiKxqiias1LaUOXnnS93rDFngKHcoJgnAMdjurqG7:3
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
wscript.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation wscript.exe -
Drops startup file 1 IoCs
Processes:
java.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yjsomzhicp.txt java.exe -
Loads dropped DLL 2 IoCs
Processes:
java.exejava.exepid Process 760 java.exe 2884 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
java.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yjsomzhicp = "\"C:\\Users\\Admin\\AppData\\Roaming\\yjsomzhicp.txt\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yjsomzhicp = "\"C:\\Users\\Admin\\AppData\\Roaming\\yjsomzhicp.txt\"" java.exe -
Command and Scripting Interpreter: JavaScript 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of WriteProcessMemory 10 IoCs
Processes:
wscript.exejavaw.exejava.execmd.exedescription pid Process procid_target PID 2884 wrote to memory of 2808 2884 wscript.exe 83 PID 2884 wrote to memory of 2808 2884 wscript.exe 83 PID 2808 wrote to memory of 760 2808 javaw.exe 88 PID 2808 wrote to memory of 760 2808 javaw.exe 88 PID 760 wrote to memory of 3420 760 java.exe 90 PID 760 wrote to memory of 3420 760 java.exe 90 PID 760 wrote to memory of 2884 760 java.exe 91 PID 760 wrote to memory of 2884 760 java.exe 91 PID 3420 wrote to memory of 636 3420 cmd.exe 94 PID 3420 wrote to memory of 636 3420 cmd.exe 94 -
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:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\26bbaf5330243120bd7cb98592b723f7_JaffaCakes118.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2884 -
C:\Program Files\Java\jre-1.8\bin\javaw.exe"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\yjsomzhicp.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\yjsomzhicp.txt"3⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:760 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\yjsomzhicp.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:3420 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\yjsomzhicp.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:636
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C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\yjsomzhicp.txt"4⤵
- Loads dropped DLL
PID:2884
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1JavaScript
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
46B
MD5dbe95a27aa7e0307b636b5ac7e310ec6
SHA1f62aaa9e7814960c225cdef7b975cc7efe54f8d5
SHA25600a63fe7b5c54999810880fe0018c31d66da6baeb9a767468516242edc1f5129
SHA512e1877d82dabb4131be7dfc764d25c6005193fe8edca96fb2cd8e2b51d09aa834b66e0c6f8ed8304a2e58b2fd66dd43670229cfee89a37737b86afeb9e2e85196
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3442511616-637977696-3186306149-1000\83aa4cc77f591dfc2374580bbd95f6ba_5ab270f5-f3a9-47d1-97d7-bbd50acf9955
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
88KB
MD5b17f8717fb9e59f8a215e3dcbb6ddaba
SHA12ddc1536f65be6d984c5911621b742c393c26421
SHA256c0c0bb0c40b9313224a780256303c0e08a0b037de2c0964907b66a73a0ff80c9
SHA5122424e46efc68d238b044e20943a0b8c536dc31fa5d0319fbd3d31367f84d55812622eca47ab7742e5f889ddfe01514f00558388530380beb515fbf0ffab70258
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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