Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
05/03/2024, 21:33
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
b4021f10d2e2215d8af36f1bf63f20febedd4913c247b74cdc757bb6cc68330d.dll
Resource
win7-20240220-en
10 signatures
150 seconds
General
- Target b4021f10d2e2215d8af36f1bf63f20febedd4913c247b74cdc757bb6cc68330d.dll
- Size 740KB
- Sample240305-1egs2aaa2t
- SHA256 b4021f10d2e2215d8af36f1bf63f20febedd4913c247b74cdc757bb6cc68330d
- MD5 d1d98f137a2aa729e1dbdabeb20e5862
- SHA1 447f75d0691db1ca0e56b76fd80951b03b479007
- SHA512 335bb52b81d7a27dcd0edc24a2715e9c7d414c35a67144166eb896008244d290aef5c66edbd84da9c12bc9f7ab68209cb59759a69914a5195144cabfc8d9e63f
- SSDEEP 12288:bBim9Tnts08FbKuPcA8NAc1l/XkGaZKoRQIpRX2/0Ak2ng/Zi66wNdufAdN:V/nts0Q9K/0ooRQIxAk2wi0N/
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3460-3-0x0000000001530000-0x0000000001531000-memory.dmp dridex_stager_shellcode -
resource yara_rule behavioral2/memory/980-0-0x00007FFA8C590000-0x00007FFA8C649000-memory.dmp dridex_payload behavioral2/memory/3460-22-0x0000000140000000-0x00000001400B9000-memory.dmp dridex_payload behavioral2/memory/3460-30-0x0000000140000000-0x00000001400B9000-memory.dmp dridex_payload behavioral2/memory/3460-41-0x0000000140000000-0x00000001400B9000-memory.dmp dridex_payload behavioral2/memory/980-44-0x00007FFA8C590000-0x00007FFA8C649000-memory.dmp dridex_payload behavioral2/memory/456-51-0x00007FFA7D720000-0x00007FFA7D81F000-memory.dmp dridex_payload behavioral2/memory/456-56-0x00007FFA7D720000-0x00007FFA7D81F000-memory.dmp dridex_payload behavioral2/memory/848-67-0x00007FFA7D650000-0x00007FFA7D70A000-memory.dmp dridex_payload behavioral2/memory/848-72-0x00007FFA7D650000-0x00007FFA7D70A000-memory.dmp dridex_payload behavioral2/memory/3436-83-0x00007FFA7D310000-0x00007FFA7D40F000-memory.dmp dridex_payload behavioral2/memory/3436-88-0x00007FFA7D310000-0x00007FFA7D40F000-memory.dmp dridex_payload - Executes dropped EXE 3 IoCs
pid Process 456 CameraSettingsUIHost.exe 848 upfc.exe 3436 SystemSettingsAdminFlows.exe - Loads dropped DLL 3 IoCs
pid Process 456 CameraSettingsUIHost.exe 848 upfc.exe 3436 SystemSettingsAdminFlows.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ymojgrwdyxau = "C:\\Users\\Admin\\AppData\\Roaming\\MICROS~1\\Windows\\STARTM~1\\Programs\\MAINTE~1\\7zwK\\upfc.exe" Process not Found -
description ioc Process 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 CameraSettingsUIHost.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA upfc.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA SystemSettingsAdminFlows.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 980 rundll32.exe 980 rundll32.exe 980 rundll32.exe 980 rundll32.exe 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found 3460 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3460 wrote to memory of 1556 3460 Process not Found 100 PID 3460 wrote to memory of 1556 3460 Process not Found 100 PID 3460 wrote to memory of 456 3460 Process not Found 101 PID 3460 wrote to memory of 456 3460 Process not Found 101 PID 3460 wrote to memory of 4804 3460 Process not Found 102 PID 3460 wrote to memory of 4804 3460 Process not Found 102 PID 3460 wrote to memory of 848 3460 Process not Found 103 PID 3460 wrote to memory of 848 3460 Process not Found 103 PID 3460 wrote to memory of 3992 3460 Process not Found 104 PID 3460 wrote to memory of 3992 3460 Process not Found 104 PID 3460 wrote to memory of 3436 3460 Process not Found 105 PID 3460 wrote to memory of 3436 3460 Process not Found 105 - 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\b4021f10d2e2215d8af36f1bf63f20febedd4913c247b74cdc757bb6cc68330d.dll,#11⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:980
-
C:\Windows\system32\CameraSettingsUIHost.exeC:\Windows\system32\CameraSettingsUIHost.exe1⤵PID:1556
-
C:\Users\Admin\AppData\Local\uESba\CameraSettingsUIHost.exeC:\Users\Admin\AppData\Local\uESba\CameraSettingsUIHost.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:456
-
C:\Windows\system32\upfc.exeC:\Windows\system32\upfc.exe1⤵PID:4804
-
C:\Users\Admin\AppData\Local\Vr1hURUxg\upfc.exeC:\Users\Admin\AppData\Local\Vr1hURUxg\upfc.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:848
-
C:\Windows\system32\SystemSettingsAdminFlows.exeC:\Windows\system32\SystemSettingsAdminFlows.exe1⤵PID:3992
-
C:\Users\Admin\AppData\Local\IfIU\SystemSettingsAdminFlows.exeC:\Users\Admin\AppData\Local\IfIU\SystemSettingsAdminFlows.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3436
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\IfIU\DUI70.dll
- Size 1020KB
- SHA256 0caac72bd67ce5faaa6542083b37513f51f4c24c83725d9dfd39837a7af5be4b
- MD5 fdffae501fdd9e39d7793d2d3b890f43
- SHA1 b6aaedee0f79177679298b610d3e542a72034ddc
- SHA512 7f65e6646dbec6fe2274943811325e032efc863947a0643ff4cc23856b110f09edb2cb4eb74720099006f8c1f15d1d46f9e205ba54ca506c9bd361e54f30b41f
- SSDEEP 12288:QBim9Tnts08FbKuPcA8NAc1l/XkGaZKoRQIpRX2/0Ak2ng/Zi66wNdufAdN2S:8/nts0Q9K/0ooRQIxAk2wi0N/e
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\IfIU\SystemSettingsAdminFlows.exe
- Size 506KB
- SHA256 a7a2e7122d27308df37b7ab718ef3ac239e4216669f51331e34e205f59fb0aec
- MD5 50adb2c7c145c729b9de8b7cf967dd24
- SHA1 a31757f08da6f95156777c1132b6d5f1db3d8f30
- SHA512 715b4c93e79e896da1cf86cf4455a84cba1aeac34b6fd72d2afdf203a2034f6f8fac1d6501f0dd277a17bd1d7ab73ddd1887e01a99f2d26f39efeb94d0aac9b0
- SSDEEP 6144:fxxh4fHokz0y8rh7eF+RN6cJX+VuCeDAHigkiDRns7gElPVMMHjtyV:fT1kgyqh7qIEcl+8N8CYRs7FvjtyV
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Vr1hURUxg\XmlLite.dll
- Size 744KB
- SHA256 2eebdb8185767fce5eecca06c4ab1d89ad8a504baf48268e98cf44a0d24533a3
- MD5 b69b06b1addb93f4b1b6b3ef3d10b3b8
- SHA1 7f450f5eea8aec9ff2e2fe784654802ffca6ab89
- SHA512 5af0e9bb759ddb345cd683f7bce279d5fc88f01db8e5ca40e1d7e918ed76f4b2350c32aa96fc9e1d03523faf5ca37908d1acd5f07c28a3bb3587ce71789c0fb8
- SSDEEP 12288:sBim9Tnts08FbKuPcA8NAc1l/XkGaZKoRQIpRX2/0Ak2ng/Zi66wNdufAdN:I/nts0Q9K/0ooRQIxAk2wi0N/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Vr1hURUxg\upfc.exe
- Size 118KB
- SHA256 ee44fe14df89c4e5eaf8398f8fb4823fd910c5a94d913653d6b9e831254f6cc2
- MD5 299ea296575ccb9d2c1a779062535d5c
- SHA1 2497169c13b0ba46a6be8a1fe493b250094079b7
- SHA512 02fc2b25167ebd7dfcc7b8aa74613e7004fdf33dfccccba6c3427434cca981c2eb50f4a801969b3a40c495a9bb0eac8176f4f2ec9091916cf3509a7f909b30fa
- SSDEEP 1536:0sV1GX6P47JxjWuNbQiun8PNO2zwI6guA78E8DdassZ7jyjbkVNLP+u66fvc+PPw:/V1GqPWxjWuKiYXdunyvkDzx66fvhP4
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\uESba\CameraSettingsUIHost.exe
- Size 31KB
- SHA256 3bf20bc5a208dfa1ea26a042fd0010b1268dcfedc94ed775f11890bc1d95e717
- MD5 9e98636523a653c7a648f37be229cf69
- SHA1 bd4da030e7cf4d55b7c644dfacd26b152e6a14c4
- SHA512 41966166e2ddfe40e6f4e6da26bc490775caac9997465c6dd94ba6a664d3a797ffc2aa5684c95702e8657e5cea62a46a75aee3e7d5e07a47dcaaa5c4da565e78
- SSDEEP 768:F4NyG1NyUhMnQOoJa7lrL8/9ulr6wD1PmwV:IydShg8/9uJPmwV
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\uESba\DUI70.dll
- Size 1020KB
- SHA256 ae9c21d08599eec88bdf87cd8e18c37de17ea96ba97fdea62f1f4830bd6cbc9d
- MD5 f852770838055bb0a0bf1f933640f0e7
- SHA1 b84e45d54bce46729eaf12c701443486804f68a5
- SHA512 44c98d5f50d1eb377f085e21f9bfe9117142d8ea13319681b984338fa52d97bbf320d0452bb4a02c69c174c53920db7c12f93a99574d21d2a94a5edfe70573d5
- SSDEEP 12288:QBim9Tnts08FbKuPcA8NAc1l/XkGaZKoRQIpRX2/0Ak2ng/Zi66wNdufAdNIAS:8/nts0Q9K/0ooRQIxAk2wi0N/AA
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Bgoltaavvu.lnk
- Size 1KB
- SHA256 bad2df5c8ced9790518fba251cde75a121ebde448946514d33c6261a4b3ffc94
- MD5 99e586275a4a777a18fb0c7b1bf015ea
- SHA1 90d3b1783ef1e0b32b95bbe02bdfaa5eb067e4e4
- SHA512 0ad9553f36d05e18b486a98576c861cb6a9532c14340164fd3e1aed9249208ea5808eb32a99cf3e5a52e2e0f757104d96cc4ef06e77e64432d648b6f3727bed6
- MD5 SHA1 SHA512