Analysis
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max time kernel
147s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
15-06-2024 10:19
Static task
static1
Behavioral task
behavioral1
Sample
Remittancepdf.jar
Resource
win7-20240611-en
General
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Target
Remittancepdf.jar
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Size
432KB
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MD5
8ec9eb589dc78c7e0ad9c8155027a133
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SHA1
f4cc5469b945ce8f4c5d266375c28f97636479ff
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SHA256
97e67ac77d80d26af4897acff2a3f6075e0efe7997a67d8194e799006ed5efc9
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SHA512
0044e07c000634a043aae2b9f42df7f9f1d0dba2462207663c7f0e9e322cb732b19ab0e7f1fdd653b587c0ce19f5efc93fb7e630ff3477e5e98bcb652f723a1c
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SSDEEP
6144:VwhA+Jd+Z+qYYQJXELxEG1E3RjdZO8uk/VSADdEwyOygQc8axuk9:VwC+Jd+Q1hENLE3JdU8fsg5XQc8axf9
Malware Config
Signatures
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Drops startup file 1 IoCs
Processes:
java.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Remittancepdf.jar java.exe -
Loads dropped DLL 2 IoCs
Processes:
java.exejava.exepid Process 3312 java.exe 5024 java.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Creates scheduled task(s) 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:
java.exejava.execmd.exedescription pid Process procid_target PID 1864 wrote to memory of 3648 1864 java.exe 91 PID 1864 wrote to memory of 3648 1864 java.exe 91 PID 1864 wrote to memory of 3312 1864 java.exe 96 PID 1864 wrote to memory of 3312 1864 java.exe 96 PID 3312 wrote to memory of 3744 3312 java.exe 98 PID 3312 wrote to memory of 3744 3312 java.exe 98 PID 3312 wrote to memory of 5024 3312 java.exe 99 PID 3312 wrote to memory of 5024 3312 java.exe 99 PID 3744 wrote to memory of 3748 3744 cmd.exe 102 PID 3744 wrote to memory of 3748 3744 cmd.exe 102 -
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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exejava -jar C:\Users\Admin\AppData\Local\Temp\Remittancepdf.jar1⤵
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\system32\icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M2⤵
- Modifies file permissions
PID:3648
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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\Remittancepdf.jar"2⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3312 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittancepdf.jar"3⤵
- Suspicious use of WriteProcessMemory
PID:3744 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittancepdf.jar"4⤵
- Creates scheduled task(s)
PID:3748
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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\Remittancepdf.jar"3⤵
- Loads dropped DLL
PID:5024
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3852,i,7977653611488681184,6839495125838449898,262144 --variations-seed-version --mojo-platform-channel-handle=4084 /prefetch:81⤵PID:2444
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
46B
MD5571691a5b7dcb6527394bf1e6134b076
SHA1443d5242448051a5e32f7f8965028a3b1ad4ea90
SHA2561ff2c176d2dacc1e471476c1ac687f1074be7bfcdd8433e53154731409c3f622
SHA512131c617d9fafacba321aacf962fd4a6f0c6a6f9e8efc9032c3fc764e0da98daf94666c0616b0e606761d4577aae8048d09745ab7eadd4bbf3b983ef935ee33f5
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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-1-5-21-3665033694-1447845302-680750983-1000\83aa4cc77f591dfc2374580bbd95f6ba_0c2dbd8b-df2c-459b-9e3f-15002e1e55b7
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
432KB
MD58ec9eb589dc78c7e0ad9c8155027a133
SHA1f4cc5469b945ce8f4c5d266375c28f97636479ff
SHA25697e67ac77d80d26af4897acff2a3f6075e0efe7997a67d8194e799006ed5efc9
SHA5120044e07c000634a043aae2b9f42df7f9f1d0dba2462207663c7f0e9e322cb732b19ab0e7f1fdd653b587c0ce19f5efc93fb7e630ff3477e5e98bcb652f723a1c
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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