Analysis
- max time kernel
152s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
06/03/2024, 00:40
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
b61298b4b340f3a57d4e1216722c7e2d.dll
Resource
win7-20240221-en
9 signatures
150 seconds
General
- Target b61298b4b340f3a57d4e1216722c7e2d.dll
- Size 1.7MB
- Sample240306-a1fvrafb84
- SHA256 116b610affb1898e95f6a58cc4da374a05a0188c4bdf6e4feaab6e97154ec983
- MD5 b61298b4b340f3a57d4e1216722c7e2d
- SHA1 41e4a62b6ff04a1d05a0bf665a5429c4eab2ee95
- SHA512 43418ffd5ebd2998c86bc0b429dab542d224d4fa5906ab7d7321e49dfc7b2d91a5e958b9905577def9d83f93fbf85abcb92757530480b7b612314dd000480de7
- SSDEEP 12288:SVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:PfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3320-4-0x0000000002650000-0x0000000002651000-memory.dmp dridex_stager_shellcode - Drops startup file 3 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LA97 Process not Found File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LA97\WTSAPI32.dll Process not Found File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LA97\MDMAppInstaller.exe Process not Found - Executes dropped EXE 3 IoCs
pid Process 536 dccw.exe 4340 dpapimig.exe 2440 MDMAppInstaller.exe - Loads dropped DLL 3 IoCs
pid Process 536 dccw.exe 4340 dpapimig.exe 2440 MDMAppInstaller.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gvuuxctctfhbiie = "C:\\Users\\Admin\\AppData\\Roaming\\Sun\\Java\\7enVagt5N\\dpapimig.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MDMAppInstaller.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dccw.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dpapimig.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 392 rundll32.exe 392 rundll32.exe 392 rundll32.exe 392 rundll32.exe 392 rundll32.exe 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found 3320 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3320 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3320 wrote to memory of 1384 3320 Process not Found 95 PID 3320 wrote to memory of 1384 3320 Process not Found 95 PID 3320 wrote to memory of 536 3320 Process not Found 96 PID 3320 wrote to memory of 536 3320 Process not Found 96 PID 3320 wrote to memory of 3376 3320 Process not Found 99 PID 3320 wrote to memory of 3376 3320 Process not Found 99 PID 3320 wrote to memory of 4340 3320 Process not Found 100 PID 3320 wrote to memory of 4340 3320 Process not Found 100 PID 3320 wrote to memory of 556 3320 Process not Found 101 PID 3320 wrote to memory of 556 3320 Process not Found 101 PID 3320 wrote to memory of 2440 3320 Process not Found 102 PID 3320 wrote to memory of 2440 3320 Process not Found 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
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b61298b4b340f3a57d4e1216722c7e2d.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:392
-
C:\Windows\system32\dccw.exeC:\Windows\system32\dccw.exe1⤵PID:1384
-
C:\Users\Admin\AppData\Local\3mb\dccw.exeC:\Users\Admin\AppData\Local\3mb\dccw.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:536
-
C:\Windows\system32\dpapimig.exeC:\Windows\system32\dpapimig.exe1⤵PID:3376
-
C:\Users\Admin\AppData\Local\157\dpapimig.exeC:\Users\Admin\AppData\Local\157\dpapimig.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4340
-
C:\Windows\system32\MDMAppInstaller.exeC:\Windows\system32\MDMAppInstaller.exe1⤵PID:556
-
C:\Users\Admin\AppData\Local\R9ESWB0\MDMAppInstaller.exeC:\Users\Admin\AppData\Local\R9ESWB0\MDMAppInstaller.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2440
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\157\DUI70.dll
- Size 2.0MB
- SHA256 8bd1de244ef6fd7e4a059f5cb972a13bef1f8e7c2fd81ae97058f04b74a64191
- MD5 dcda6bc5d47432a2be8abbec07eec248
- SHA1 46e82801bba85c2cf47883a5efc4b05adc89b777
- SHA512 15578f1c9d9829d76d6bd0c3d690d40129a91cb0b51c4b3721c4f67823d44f17666d27edfa0c214ad2170bb1ab0d13ef26c435d6a7bf6f04dcb7333385f64ac9
- SSDEEP 12288:WVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1erQ6:LfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\157\dpapimig.exe
- Size 76KB
- SHA256 a8147d08b82609c72d588a0a604cd3c1f2076befcc719d282c7cbd6525ae89eb
- MD5 b6d6477a0c90a81624c6a8548026b4d0
- SHA1 e6eac6941d27f76bbd306c2938c0a962dbf1ced1
- SHA512 72ec8b79e3438f0f981129a323ad39db84df7dd14a796a820bdbc74ea8fa13eee843d1ea030a0c1caeda2e2d69952f14a821a73825b38dd9415047aca597b1fe
- SSDEEP 1536:5Thpc5GR/Zhp00l3uU1HIED1fCbWpygzU:VhaKh+SJj16bE
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\3mb\dccw.exe
- Size 101KB
- SHA256 f7f3300b78148a34f6a35796c777a832b638b6d3193e11f4a37f45d4c6dfa845
- MD5 cb9374911bf5237179785c739a322c0f
- SHA1 3f4d3dd3d58c9f19dfbb414ded16969ebd9f74b9
- SHA512 9d47521538148b1823c0a17baa86ddf932f06f46d5d8b63fa87b2cc220fb98ce3f933e32d771222937bb8e41c88030839d489d1cd78b062bffeb2980dc6864be
- SSDEEP 1536:KCuqiEgeGHVfsbusCrUEGC4NffprtWSDPJJGGJpezQZkr/kbPftwiapzsf:KFqCeCCvcpkxfrHYt2twzpzsf
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\3mb\mscms.dll
- Size 1.7MB
- SHA256 6e15d41bf8115f713b8b8508be2bd8de7c36611745b8fd1a4cf1f17f592ec4c9
- MD5 0290a4c824bf1be0cb23b54505be17aa
- SHA1 a3c6d3f139366b70039c2a5e88e563e8e81d1b4d
- SHA512 accb70d6ed0d9e79851dbea06901aaf8e08018ea171b757dadff5e72c8352a37d0a1dc29897e322421de92b46186b4cd29de338774f52534a45878ab120a3eab
- SSDEEP 12288:5VI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:4fP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\R9ESWB0\MDMAppInstaller.exe
- Size 151KB
- SHA256 dc821931f63117962e2266acd3266e86bf8116d4a14b3adbebfade1d40b84766
- MD5 30e978cc6830b04f1e7ed285cccaa746
- SHA1 e915147c17e113c676c635e2102bbff90fb7aa52
- SHA512 331923fa479f71c4c80b0e86ea238628666f95b6cf61cf4d741ae4a27ea2b8c636864dfac543d14599b4873f3b2ab397d07c4e4c17aca3f3b4e5871e24e50214
- SSDEEP 3072:2D0r76jm3Ke1lVJFgJBylnzV7hxzu3dOC7sftn:2D0r76jm3n1lVJFUKZ7b63dOCwft
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\R9ESWB0\WTSAPI32.dll
- Size 1.7MB
- SHA256 b6aab987aab9f08b4985713dede47240c3a7975efef740d4d3a39b9d8f2bf122
- MD5 39e393406ae10fee90434cffafd40929
- SHA1 302613f3f200f9b681ddf8950392a0a1528390a7
- SHA512 2432edf5ebc3099c60706828c7bca8da89db69102cfa0c80f6e7aaf7b6ca9f4ca87a2d9053a5e25580108b57aa31f4445ca43747615ea69bb28aaaef74867430
- SSDEEP 12288:rVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:qfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Vuzdvithyifjda.lnk
- Size 1KB
- SHA256 4fc8519303e2632f1ad980f2592f0bb833bc63b1f98aee3b02909d244b53ea51
- MD5 1e65df3d86aea62af5240269e0cdf089
- SHA1 3a2c6f5ff7c171c0cf0ed751154b1f412dba1dd6
- SHA512 7c71b9814cde28a4e96d80628a3717f8b123833c8484d68984b7a23dbf7805af3ed88d2d8f1fe4b4f492e905b8bd8ea36b27d9d8f8aba84063994ce3e5660f60
- MD5 SHA1 SHA512