12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb

Analysis

max time kernel
89s
max time network
162s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
24-11-2022 19:07

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General

Target

12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe
Size

1017KB
MD5

1bd9fb4ade498938e6432d6c5d1e23a5
SHA1

909ecec41f837a402ee4ef43d8b9f6b06a5a8aaf
SHA256

12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb
SHA512

ea02ab5ec0bdeaba4e897e5e1e50ccf27ab392ac859348cdf1caaaf90c7c10f1e99cdd01317f36479cb600b9fe2189f34b59afc822071ec4c7ea989f8f99cda5
SSDEEP

24576:K/J3qfaq1RXzqGA+PF6ZbOQVIZc77oReV2U6JjgtA1/lGaee:K/Ja54TS6ZyQKk7cJjJJlGa

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

6 3724 rundll32.exe
8 3724 rundll32.exe
9 3724 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

3724 rundll32.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 3724 set thread context of 3784 3724 rundll32.exe rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
6	3724	rundll32.exe
8	3724	rundll32.exe
9	3724	rundll32.exe

pid	process
3724	rundll32.exe

description	pid	process	target process
PID 3724 set thread context of 3784	3724	rundll32.exe	rundll32.exe

Checks processor information in registry 2 TTPs 22 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Previous Update Revision	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor	rundll32.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information	rundll32.exe

Modifies registry class 24 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 50003100000000000000000010004c6f63616c003c0009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004c006f00630061006c00000014000000	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\NodeSlot = "1"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f44471a0359723fa74489c55595fe6b30ee0000	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 820074001c0043465346160031000000000000000000100041707044617461000000741a595e96dfd3488d671733bcee28bac5cdfadf9f6756418947c5c76bc0b67f400009000400efbe00000000000000002e00000000000000000000000000000000000000000000000000000000004100700070004400610074006100000042000000	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4e00310000000000785517a1100054656d7000003a0009000400efbe0c55a789785517a12e00000000000000000000000000000000000000000000000000d2311701540065006d007000000014000000	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = ffffffff	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

rundll32.exe

pid process

3784 rundll32.exe

pid	process
3784	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exerundll32.exe

description	pid	process	target process
PID 2132 wrote to memory of 3724	2132	12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe	rundll32.exe
PID 2132 wrote to memory of 3724	2132	12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe	rundll32.exe
PID 2132 wrote to memory of 3724	2132	12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe	rundll32.exe
PID 3724 wrote to memory of 3784	3724	rundll32.exe	rundll32.exe
PID 3724 wrote to memory of 3784	3724	rundll32.exe	rundll32.exe
PID 3724 wrote to memory of 3784	3724	rundll32.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe
"C:\Users\Admin\AppData\Local\Temp\12b8b5bfde4092b4248accc682098222420ee6a0b6dfe89eb268f7fcf8cf00fb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2132

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Tdryuqayh.tmp",Worhdhqfpryr
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3724

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 20164
3⤵
- Modifies registry class
- Suspicious use of FindShellTrayWindow
PID:3784

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4016

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Tdryuqayh.tmp
Filesize
767KB

MD5
d8ca174a8f3f0c225429e1be1cb6d304

SHA1
0f2e738b1a35b6072e1d23894468e45fa7dee750

SHA256
3d63ad175a34e4c89ea6eca4a1161bb5dd514a5e58302707edc03473eb1f656e

SHA512
dbf999a9f0399b3cbf93484f2e665e3beb4de369dacf4678c7b7b3ff06f45c42879c544c2404d85b88fe3aaacf117a1e28ecb68ee7ea2553b736bad03619e527

Download Submit
\Users\Admin\AppData\Local\Temp\Tdryuqayh.tmp
Filesize
767KB

MD5
d8ca174a8f3f0c225429e1be1cb6d304

SHA1
0f2e738b1a35b6072e1d23894468e45fa7dee750

SHA256
3d63ad175a34e4c89ea6eca4a1161bb5dd514a5e58302707edc03473eb1f656e

SHA512
dbf999a9f0399b3cbf93484f2e665e3beb4de369dacf4678c7b7b3ff06f45c42879c544c2404d85b88fe3aaacf117a1e28ecb68ee7ea2553b736bad03619e527

Download Submit
memory/2132-157-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-144-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-122-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-123-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-124-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-125-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-126-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-127-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-128-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-129-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-130-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-131-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-132-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-133-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-134-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-135-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-136-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-137-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-139-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-138-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-140-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-141-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-143-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-160-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-145-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-161-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-147-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-149-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-148-0x00000000024E0000-0x00000000025C7000-memory.dmp

Filesize
924KB

Download
memory/2132-150-0x0000000002640000-0x0000000002760000-memory.dmp

Filesize
1.1MB

Download
memory/2132-151-0x0000000000400000-0x000000000071B000-memory.dmp

Filesize
3.1MB

Download
memory/2132-152-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-153-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-154-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-155-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-156-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-120-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-158-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-121-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-159-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-146-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-162-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-163-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-164-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/2132-168-0x00000000024E0000-0x00000000025C7000-memory.dmp

Filesize
924KB

Download
memory/2132-170-0x0000000000400000-0x000000000071B000-memory.dmp

Filesize
3.1MB

Download
memory/2132-193-0x0000000000400000-0x000000000071B000-memory.dmp

Filesize
3.1MB

Download
memory/3724-282-0x0000000008179000-0x000000000817B000-memory.dmp

Filesize
8KB

Download
memory/3724-182-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-167-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-169-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-171-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-172-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-173-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-174-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-175-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-176-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-177-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-178-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-179-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-180-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-181-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-166-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-183-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-184-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-165-0x0000000000000000-mapping.dmp

Download
memory/3724-186-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-187-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-188-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-189-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-190-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3724-268-0x0000000007580000-0x00000000080F9000-memory.dmp

Filesize
11.5MB

Download
memory/3724-285-0x0000000007580000-0x00000000080F9000-memory.dmp

Filesize
11.5MB

Download
memory/3724-185-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3784-283-0x0000000000EF0000-0x000000000119B000-memory.dmp

Filesize
2.7MB

Download
memory/3784-284-0x0000017EB8190000-0x0000017EB844C000-memory.dmp

Filesize
2.7MB

Download
memory/3784-277-0x00007FF65BD05FD0-mapping.dmp

Download