Analysis
- max time kernel
151s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
31/01/2024, 04:39
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
837792f925aca842eba981ebc7aff9a1.dll
Resource
win7-20231215-en
9 signatures
150 seconds
General
- Target 837792f925aca842eba981ebc7aff9a1.dll
- Size 2.2MB
- Sample240131-e99awabgc7
- SHA256 3806ec3c6ae591fb47c6b48f5dbfaf45d7500d6efb12c07311ecdc5e9c9d514d
- MD5 837792f925aca842eba981ebc7aff9a1
- SHA1 527e5a2d67f6422ae44a5276ae6cf67f7e597823
- SHA512 a4b0865d290225b514fd4b711ae83d5f659b19edf1fd2409920054ef706eb580e2d2a816ba34ceaa5778d1c43bce7149575b736e8828de9c942906800512c90f
- SSDEEP 12288:eVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:DfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
-
resource yara_rule behavioral2/memory/3480-4-0x0000000001350000-0x0000000001351000-memory.dmp dridex_stager_shellcode - Executes dropped EXE 3 IoCs
pid Process 4832 quickassist.exe 4408 MusNotificationUx.exe 1008 isoburn.exe - Loads dropped DLL 3 IoCs
pid Process 4832 quickassist.exe 4408 MusNotificationUx.exe 1008 isoburn.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gdfgjdhwrlpouj = "C:\\Users\\Admin\\AppData\\Roaming\\MICROS~1\\Windows\\STARTM~1\\Programs\\ADMINI~1\\H9db\\MUSNOT~1.EXE" Process not Found -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA quickassist.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA MusNotificationUx.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA isoburn.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3904 regsvr32.exe 3904 regsvr32.exe 3904 regsvr32.exe 3904 regsvr32.exe 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found 3480 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3480 wrote to memory of 656 3480 Process not Found 84 PID 3480 wrote to memory of 656 3480 Process not Found 84 PID 3480 wrote to memory of 4832 3480 Process not Found 85 PID 3480 wrote to memory of 4832 3480 Process not Found 85 PID 3480 wrote to memory of 4224 3480 Process not Found 86 PID 3480 wrote to memory of 4224 3480 Process not Found 86 PID 3480 wrote to memory of 4408 3480 Process not Found 87 PID 3480 wrote to memory of 4408 3480 Process not Found 87 PID 3480 wrote to memory of 2316 3480 Process not Found 88 PID 3480 wrote to memory of 2316 3480 Process not Found 88 PID 3480 wrote to memory of 1008 3480 Process not Found 89 PID 3480 wrote to memory of 1008 3480 Process not Found 89 - 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\837792f925aca842eba981ebc7aff9a1.dll1⤵
- Suspicious behavior: EnumeratesProcesses
PID:3904
-
C:\Windows\system32\quickassist.exeC:\Windows\system32\quickassist.exe1⤵PID:656
-
C:\Users\Admin\AppData\Local\4cnzpoY\quickassist.exeC:\Users\Admin\AppData\Local\4cnzpoY\quickassist.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4832
-
C:\Windows\system32\MusNotificationUx.exeC:\Windows\system32\MusNotificationUx.exe1⤵PID:4224
-
C:\Users\Admin\AppData\Local\3J8wl4c\MusNotificationUx.exeC:\Users\Admin\AppData\Local\3J8wl4c\MusNotificationUx.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:4408
-
C:\Windows\system32\isoburn.exeC:\Windows\system32\isoburn.exe1⤵PID:2316
-
C:\Users\Admin\AppData\Local\3ZobJ\isoburn.exeC:\Users\Admin\AppData\Local\3ZobJ\isoburn.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1008
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\3J8wl4c\MusNotificationUx.exe
- Size 615KB
- SHA256 405c2df9a36d7cfb5c8382c96f04792eb88c11a6cfa36b1d2ec3e0bec8d17361
- MD5 869a214114a81712199f3de5d69d9aad
- SHA1 be973e4188eff0d53fdf0e9360106e8ad946d89f
- SHA512 befcdeb8de6e68b9ee0bacd4cbc80f7393a0213d4039b239c98585e0cd5db1755c75559a62372374cbfb7132b6a7973ea9e6a31952e0e0ba007079c56e6d9012
- SSDEEP 6144:o1MI7SGguvfU/9QHnFw+RLmJBJd2J/prtGCLsoZ0akzq8/QfCn/+zOlAwS1u1V1/:oSYguEgwCQBJd291tGC56mO9F7Pk
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\3J8wl4c\XmlLite.dll
- Size 2.2MB
- SHA256 98cfdffaf902883364b3a625be4506ff6256507583b02fba5fc03071b775f517
- MD5 dd3443ca746d2de4ad3fb6c39214650b
- SHA1 b09b644b86a0ab18eaaaf942fdcb8b3f159baac5
- SHA512 6830ea76c35d5ccacc7de010244be71c8c76cea870ddb15990b036d9fb1b980d5ab719e331e2512faeacdde30868b4e44f88c47b4c6ecadc3a38f98b4c618c4e
- SSDEEP 12288:fVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:WfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\3ZobJ\UxTheme.dll
- Size 2.2MB
- SHA256 86f8d6993e9a48698cd8cc161b443172a2ed10aef2608b0f1ccdf53f2c18f544
- MD5 eb00165aadcb47d6bee4a5d9dc587744
- SHA1 3691011d5cb6bddc6f9a7f4d2e274b30fcb829ad
- SHA512 c3699499943108e72e10f021b289c2d20d411c88f7ddfad4d01a2d85f8cc507c2cc914d1e28a761174cb0b34c57bbf958f2e1438c2c55d1d20732cdcf19194bc
- SSDEEP 12288:BVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:wfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\3ZobJ\isoburn.exe
- Size 119KB
- SHA256 9478c095afe212bce91d2de1a3c3647109f2d54e46b9bf70843e839324458567
- MD5 68078583d028a4873399ae7f25f64bad
- SHA1 a3c928fe57856a10aed7fee17670627fe663e6fe
- SHA512 25503a47c53fe83eeb56726b5a5eec5cb01bc783e866306f92242a7a8cbafa20a3209217e0f4561febfec78d2f64f1725727a6b2d3ee6da512618984d0bb0bc1
- SSDEEP 1536:eB/+hfSIh08Xx11iEG84z0mfTxC962iwCy/3ArWtEMJOyy5CkPAbeHZrQqf:BhXx/9mfVC960ZFJi5XEeHd3
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\4cnzpoY\UxTheme.dll
- Size 2.2MB
- SHA256 d42eb85ce48c35c3da642ea90ca87df59c7986ce45c09c475303af8d9ed0a11f
- MD5 ed5bf30ce05e3cff7854bf9ffaca08f5
- SHA1 f5daaa1b33a039c224500c083bf8146eba59e97d
- SHA512 ff75b84b15328b5f5eb693c3fb0e75d673096701584aeb024f7302d2c02c675a97259911d92c5f0b3a0d2b0a16a14fb2c65261928402e41b0ebbe8502716f05c
- SSDEEP 12288:xVI0W/TtlPLfJCm3WIYxJ9yK5IQ9PElOlidGAWilgm5Qq0nB6wtt4AenZ1:AfP7fWsK5z9A+WGAW+V5SB6Ct4bnb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\4cnzpoY\quickassist.exe
- Size 665KB
- SHA256 c1e8fda00da574e8759ba262d76b6edc1d5f4a80620730ef0be7527e0d803db2
- MD5 d1216f9b9a64fd943539cc2b0ddfa439
- SHA1 6fad9aeb7780bdfd88a9a5a73b35b3e843605e6c
- SHA512 c5fd7d81d1d478056fcbed0ba887ce551832f0104e7c31753c3c8760b4d63f38324f74e996684042acc8f9682fce8a8c85172741a868257e87d5e0f988c4e567
- SSDEEP 12288:CA6YhjHK46sZdBAb1WVX2kPKSBATq7cX5PsTGWS:CA6YhzlKb+2kSSBATmcXlsT
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Btpzaqnqvnv.lnk
- Size 1KB
- SHA256 74005608bb7afc7bbdd14824ea760fd2282855943f740147c3b1263a8332fb9e
- MD5 f1f71ccfe60d089abd759eb656643c89
- SHA1 fb2aeecbf68609fa06fd80c529b72003d7a4a798
- SHA512 ee55544874138a3ff3a5b594d2ab3f639b730b87eab4ffa61412ffea2ef5f0a61576b09173eb5fdd4f29f488e45c17cfcbee4a4cc719bd485685dda77c188d4f
- MD5 SHA1 SHA512