Analysis
- max time kernel
150s - max time network
120s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system - submitted
13/02/2024, 12:16
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
99677e47abb74a2bbed3fafc0a218608.dll
Resource
win7-20231215-en
9 signatures
150 seconds
General
- Target 99677e47abb74a2bbed3fafc0a218608.dll
- Size 2.9MB
- Sample240213-pfppgsaf49
- SHA256 796a138db0ea810d2a55aa52b67e343e2746d2b4cd07ad653d8d3ac06b214224
- MD5 99677e47abb74a2bbed3fafc0a218608
- SHA1 353c1d5b5181a3b85906f32606bf75a32bfbd834
- SHA512 2cc85e5cf35b2dd6dbbbd45df74aabb0db154cc3bd58d0dd35273f1144820e5853f8447dbe7885d17ce00dca3da7d350da62b51340da39a43a67d4140356606c
- SSDEEP 12288:iVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:/fP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3392-4-0x0000000002840000-0x0000000002841000-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\vk1FB6Vy Process not Found File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vk1FB6Vy\DUser.dll Process not Found File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vk1FB6Vy\EaseOfAccessDialog.exe Process not Found - Executes dropped EXE 3 IoCs
pid Process 4196 EaseOfAccessDialog.exe 4212 rdpshell.exe 5004 MDMAppInstaller.exe - Loads dropped DLL 3 IoCs
pid Process 4196 EaseOfAccessDialog.exe 4212 rdpshell.exe 5004 MDMAppInstaller.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Tgnmvdx = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\SystemCertificates\\My\\Certificates\\wu3ennDC\\rdpshell.exe" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA EaseOfAccessDialog.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rdpshell.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MDMAppInstaller.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4384 regsvr32.exe 4384 regsvr32.exe 4384 regsvr32.exe 4384 regsvr32.exe 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found 3392 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3392 wrote to memory of 3156 3392 Process not Found 88 PID 3392 wrote to memory of 3156 3392 Process not Found 88 PID 3392 wrote to memory of 4196 3392 Process not Found 89 PID 3392 wrote to memory of 4196 3392 Process not Found 89 PID 3392 wrote to memory of 2920 3392 Process not Found 90 PID 3392 wrote to memory of 2920 3392 Process not Found 90 PID 3392 wrote to memory of 4212 3392 Process not Found 91 PID 3392 wrote to memory of 4212 3392 Process not Found 91 PID 3392 wrote to memory of 2348 3392 Process not Found 92 PID 3392 wrote to memory of 2348 3392 Process not Found 92 PID 3392 wrote to memory of 5004 3392 Process not Found 93 PID 3392 wrote to memory of 5004 3392 Process not Found 93 - 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\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\99677e47abb74a2bbed3fafc0a218608.dll1⤵
- Suspicious behavior: EnumeratesProcesses
PID:4384
-
C:\Windows\system32\EaseOfAccessDialog.exeC:\Windows\system32\EaseOfAccessDialog.exe1⤵PID:3156
-
C:\Users\Admin\AppData\Local\Hml\EaseOfAccessDialog.exeC:\Users\Admin\AppData\Local\Hml\EaseOfAccessDialog.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4196
-
C:\Windows\system32\rdpshell.exeC:\Windows\system32\rdpshell.exe1⤵PID:2920
-
C:\Users\Admin\AppData\Local\xGox\rdpshell.exeC:\Users\Admin\AppData\Local\xGox\rdpshell.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4212
-
C:\Windows\system32\MDMAppInstaller.exeC:\Windows\system32\MDMAppInstaller.exe1⤵PID:2348
-
C:\Users\Admin\AppData\Local\gOJmGOr\MDMAppInstaller.exeC:\Users\Admin\AppData\Local\gOJmGOr\MDMAppInstaller.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:5004
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Hml\DUser.dll
- Size 2.9MB
- SHA256 636a26ef4ad989f43e4f97f02831f6f100c1cb73fd46a01ea0fcc00584a08a7b
- MD5 f8303b48431e385d5d0cf4e0c21aa415
- SHA1 3155a66b741999cd181f5d1ee4a8e76944482422
- SHA512 5a44f7fe6beaa0131f3a688efcc13e33764c642ba2c8b5439c7370374a4a93923cb3b8e25b19a8628321c18f846f33681f184baf1e91490fbfe208e15ee0ac4f
- SSDEEP 12288:vVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:GfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Hml\EaseOfAccessDialog.exe
- Size 123KB
- SHA256 0b1731562413eaa972b373cd7388c644a3059940ce67eb89668e4073f3e068dc
- MD5 e75ee992c1041341f709a517c8723c87
- SHA1 471021260055eac0021f0abffa2d0ba77a2f380e
- SHA512 48c3a8531df6bcc5077367cdf32af104c94cf7701118a85e8beabba2e9c4f511ae14e47b6d1b57d11a2bc1e8b4f6d5bacae27a8d16fcd09a8f9e0018f5a6370a
- SSDEEP 1536:5Nooa5AB8mYEephUdi7cW6itnm5OrwCSiQDWWWwHDxdfUKI/Ibmf3IjCP1Hjbefi:5diAy2R8mgU3JHV95T6AjYHjyi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\gOJmGOr\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\gOJmGOr\WTSAPI32.dll
- Size 2.9MB
- SHA256 34bc74df173f695726db0d93039941c4fcf8048729b4a48153d701b7b6554389
- MD5 75d1f3ab09f45c6ac2a4feaf64efc49b
- SHA1 a8ba714a953d45fab0aa241fea87a1ff4bcb1ae6
- SHA512 8bb4123f5e0f5a8b5d6a84a982f7f5d2b4679a90a66c6dba0257e9552f901792caf180386ca76a76944ea6390e0da37664bb6b7c846a52999989f668a595603a
- SSDEEP 12288:5VI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:4fP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\xGox\dwmapi.dll
- Size 2.9MB
- SHA256 94fd9ddbbd017ed4c5b26d0950de37722595069442c060437db05d014c5bbaaa
- MD5 7cab5b4ad61c149ca886f98184927b96
- SHA1 f075b22dc34b850ee3453df0c4465885c874cd81
- SHA512 9ed7ba3fd516517044724b9e407c78ea1cf4a9a569a6f12e86775e4180d8fd05edfe7bf21564ac2baf08096db051dac2d48c33da64c0287de829570ac8bb5e59
- SSDEEP 12288:3VI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:+fP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\xGox\rdpshell.exe
- Size 468KB
- SHA256 da6c395a2018d3439ad580a19e6a1ca5ff29ef9074411ee9f9f1b0a6365dfebd
- MD5 428066713f225bb8431340fa670671d4
- SHA1 47f6878ff33317c3fc09c494df729a463bda174c
- SHA512 292aad2762ae4dc519c69411aa114a29894f60ffac103813db4946f2fac4f5a166f66523c421529d6847c0882d8ab467392ee8da1e3a4fca0d6d4e6ebda5b737
- SSDEEP 12288:oh2pMO8Jc53jHw3TRi7SBirofNIcUW0/K:ohbO8JlTRs0i0fNx0/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Aqwbkkvq.lnk
- Size 1KB
- SHA256 23d6ac1285aa8c469e437b5c534e2db6f73b0dcb47e3448c5d7c30984a1c96de
- MD5 eb6390eb9675745d392d109255c09ced
- SHA1 955ada1e53ab5b4d8554410a004f24f648061533
- SHA512 ef5e932a89da4ae23953326aebd9ec3cd7db5b533b7171458d865bdae97df5935c185c18b55aff0848648cf5a1fe128886693502c0d1fa73e59af832ae592bb9
- MD5 SHA1 SHA512