Analysis
- max time kernel
150s - max time network
123s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system - submitted
02/05/2024, 19:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
16d6aa1d5a78eaf9b428c0f58378d22f0e8b7d4c142b79bbe23af421729ac6f4.dll
Resource
win7-20240419-en
10 signatures
150 seconds
General
- Target 16d6aa1d5a78eaf9b428c0f58378d22f0e8b7d4c142b79bbe23af421729ac6f4.dll
- Size 1.1MB
- Sample240502-xqteesea7z
- SHA256 16d6aa1d5a78eaf9b428c0f58378d22f0e8b7d4c142b79bbe23af421729ac6f4
- MD5 b5e9f0586fa3e97288af7596e2ace391
- SHA1 23a84f4a15621389ec1137c51a07244dffefde9a
- SHA512 2a06ed8b46dc05a2a5076da2237a103a80d1d4f9ce56bc25dd939dc9695568789d7f825a291024b66c3092cfbe46b32ff5e4e385e292f4ddbb6449440d279b4d
- SSDEEP 12288:H38uea4w46+K1FZPfxyMs2SRXTajPomqkpyrJXy6mfvHELWUbxdewWRa7CkhkgjS:X8uea4w467D5/0ypyFYELW8xFZmMXJZ
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3456-3-0x0000000002870000-0x0000000002871000-memory.dmp dridex_stager_shellcode -
resource yara_rule behavioral2/memory/3400-0-0x0000000140000000-0x000000014010E000-memory.dmp dridex_payload behavioral2/memory/3456-50-0x0000000140000000-0x000000014010E000-memory.dmp dridex_payload behavioral2/memory/3456-39-0x0000000140000000-0x000000014010E000-memory.dmp dridex_payload behavioral2/memory/3400-53-0x0000000140000000-0x000000014010E000-memory.dmp dridex_payload behavioral2/memory/4204-60-0x0000000140000000-0x000000014010F000-memory.dmp dridex_payload behavioral2/memory/4204-65-0x0000000140000000-0x000000014010F000-memory.dmp dridex_payload behavioral2/memory/3116-79-0x0000000140000000-0x000000014010F000-memory.dmp dridex_payload behavioral2/memory/4520-92-0x0000000140000000-0x0000000140154000-memory.dmp dridex_payload behavioral2/memory/4520-97-0x0000000140000000-0x0000000140154000-memory.dmp dridex_payload - Executes dropped EXE 3 IoCs
pid Process 4204 dccw.exe 3116 mblctr.exe 4520 wlrmdr.exe - Loads dropped DLL 3 IoCs
pid Process 4204 dccw.exe 3116 mblctr.exe 4520 wlrmdr.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ramyketlbwvbqf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SystemCertificates\\My\\Pe8rZkz4kYx\\mblctr.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA wlrmdr.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 mblctr.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Process not Found Key created \REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Process not Found - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3400 rundll32.exe 3400 rundll32.exe 3400 rundll32.exe 3400 rundll32.exe 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found 3456 Process not Found - Suspicious use of AdjustPrivilegeToken 8 IoCs
description pid Process Token: SeShutdownPrivilege 3456 Process not Found Token: SeCreatePagefilePrivilege 3456 Process not Found Token: SeShutdownPrivilege 3456 Process not Found Token: SeCreatePagefilePrivilege 3456 Process not Found Token: SeShutdownPrivilege 3456 Process not Found Token: SeCreatePagefilePrivilege 3456 Process not Found Token: SeShutdownPrivilege 3456 Process not Found Token: SeCreatePagefilePrivilege 3456 Process not Found - Suspicious use of UnmapMainImage 1 IoCs
pid Process 3456 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3456 wrote to memory of 3464 3456 Process not Found 96 PID 3456 wrote to memory of 3464 3456 Process not Found 96 PID 3456 wrote to memory of 4204 3456 Process not Found 97 PID 3456 wrote to memory of 4204 3456 Process not Found 97 PID 3456 wrote to memory of 5036 3456 Process not Found 98 PID 3456 wrote to memory of 5036 3456 Process not Found 98 PID 3456 wrote to memory of 3116 3456 Process not Found 99 PID 3456 wrote to memory of 3116 3456 Process not Found 99 PID 3456 wrote to memory of 2248 3456 Process not Found 100 PID 3456 wrote to memory of 2248 3456 Process not Found 100 PID 3456 wrote to memory of 4520 3456 Process not Found 101 PID 3456 wrote to memory of 4520 3456 Process not Found 101 - 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\16d6aa1d5a78eaf9b428c0f58378d22f0e8b7d4c142b79bbe23af421729ac6f4.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:3400
-
C:\Windows\system32\dccw.exeC:\Windows\system32\dccw.exe1⤵PID:3464
-
C:\Users\Admin\AppData\Local\aoQt\dccw.exeC:\Users\Admin\AppData\Local\aoQt\dccw.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4204
-
C:\Windows\system32\mblctr.exeC:\Windows\system32\mblctr.exe1⤵PID:5036
-
C:\Users\Admin\AppData\Local\B3r\mblctr.exeC:\Users\Admin\AppData\Local\B3r\mblctr.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3116
-
C:\Windows\system32\wlrmdr.exeC:\Windows\system32\wlrmdr.exe1⤵PID:2248
-
C:\Users\Admin\AppData\Local\8w3iAx7\wlrmdr.exeC:\Users\Admin\AppData\Local\8w3iAx7\wlrmdr.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4520
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\8w3iAx7\DUI70.dll
- Size 1.3MB
- SHA256 8651bc19c8758d01db444932a5b77e5731e7a7ca40262330a02c43a44be90ddf
- MD5 eaf324bdbd322f6a3fc06f39bee0cc35
- SHA1 0d98935bca3e8f3643a4128128c28b1c3fae6eb8
- SHA512 ae1efe604054e2dd6cb0c0fb8edbe688581fe85652c3136df9fdb129c04a870bb205a1f8568d3791fa8e38a559a1e2466c1254859a198552b0024a4f0cc7b78d
- SSDEEP 24576:78uea4w467D5/0ypyFYELW8xFZmMXJZwf:hXyFYELpT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\8w3iAx7\wlrmdr.exe
- Size 66KB
- SHA256 2fda95aafb2e9284c730bf912b93f60a75b151941adc14445ed1e056140325b1
- MD5 ef9bba7a637a11b224a90bf90a8943ac
- SHA1 4747ec6efd2d41e049159249c2d888189bb33d1d
- SHA512 4c1fdb8e4bf25546a2a33c95268593746f5ae2666ce36c6d9ba5833357f13720c4722231224e82308af8c156485a2c86ffd97e3093717a28d1300d3787ef1831
- SSDEEP 1536:n4nL90P0RrGKB8zRUe6kqThzgyf8svqr9PxDt8erP/:2L90P0R2zRqtzhru9ZDt8er
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\B3r\WTSAPI32.dll
- Size 1.1MB
- SHA256 1aed220ddccf5e790c6ab1feedee54152363ab923795923e5aa099bbe3950ab0
- MD5 a76e7fe0f370b926082bc7a204e2bf20
- SHA1 5f703ffcaa5921ab297de431c0cfb0691dabe8a8
- SHA512 193e5f458e5a2a467ba0104e6276231803f95b6385e175fd170f11957b54f709178fa18000428faaee6cf370905b0d99fb73e2a6605f0cb909f901e60310acc4
- SSDEEP 12288:a38uea4w46+K1FZPfxyMs2SRXTajPomqkpyrJXy6mfvHELWUbxdewWRa7CkhkgjS:Y8uea4w467D5/0ypyFYELW8xFZmMXJZ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\B3r\mblctr.exe
- Size 790KB
- SHA256 3baa1dc0756ebb0c2c70a31be7147863d8d8ba056c1aa7f979307f8790d1ff69
- MD5 d3db14eabb2679e08020bcd0c96fa9f6
- SHA1 578dca7aad29409634064579d269e61e1f07d9dd
- SHA512 14dc895ae458ff0ca13d9c27aa5b4cfc906d338603d43389bb5f4429be593a587818855d1fe938f9ebebf46467fb0c1ab28247e8f9f5357098e8b822ecd8fffe
- SSDEEP 12288:H9lIZoE0OrRvgBRWasky51qviizQBODAKylkm5ZUxXrc5Zh5ZG5Ze:Hsf0GaR3y5kRzAKcjY8poA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\aoQt\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\aoQt\dxva2.dll
- Size 1.1MB
- SHA256 d3933aa68fe010b563cc2685ccf1ac9953a14677f89bcfbecf709badd535e2d9
- MD5 7f1cf9b4bc0aba86e4477bdfe9cc0a8d
- SHA1 a7fce7dc0b85b8e443a6903007dc53f0f9f2b60c
- SHA512 591bb2f662a671e8b1180f0d279e91ed1885d1518e06bf4013efacefd093595aa0e667b0654136d0a87958dd867465705e77ec50ed3e0058d14d6bc0e7cb3d82
- SSDEEP 12288:q38uea4w46+K1FZPfxyMs2SRXTajPomqkpyrJXy6mfvHELWUbxdewWRa7Ckhkgj5:I8uea4w467D5/0ypyFYELW8xFZmMXJZ
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Ehesgegqlj.lnk
- Size 1KB
- SHA256 4d259adbc912bd1cdbc99d1812e7e9d8b6dd5934e77439c6f0a7b5addf37f3f4
- MD5 711bc80f651438eeb1ddbfdf6a99c136
- SHA1 c81f64d1a0aa2b3dd9ec5e1cc3c158b11672a715
- SHA512 ec1eff31547a7978d5bf9a65da256519e4b07653e37c91268c4091c524c537d08e7f9a6db9acf09acc609c13c770132507b1134b3a88dd7da00d1d29f074860c
- MD5 SHA1 SHA512