624a79f6676f30dacde483787ee4e8addd55a66309c56005c202701063e6c3eb

Analysis

max time kernel
133s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2023, 19:09

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General

Target
85d07649652d200314947bb98e09ebc0.exe
Size 3.6MB
Sample230123-xts8tseh63
SHA256 624a79f6676f30dacde483787ee4e8addd55a66309c56005c202701063e6c3eb
MD5 85d07649652d200314947bb98e09ebc0
SHA1 e94f6c61bf41d563f0cea1d9185ea6940a3a5265
SHA512 159da32216a2b84ee57f5c556f74482b9c52824d48fed0c861a7efa2638f73173448aadf05496f6a6833e126a610af6dfab9d62fa7b4803cec58617883d6fb70
SSDEEP 98304:xGMg9NJcjivuYINSaXSVnj5XlYR2r/JB:oM03cjiSXCn1Xltr
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
11	2504	rundll32.exe
12	2504	rundll32.exe
17	2504	rundll32.exe
19	2504	rundll32.exe
27	2504	rundll32.exe
40	2504	rundll32.exe
42	2504	rundll32.exe
45	2504	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	rundll32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2504 set thread context of 4884	2504	rundll32.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1544	5088	WerFault.exe	80

Checks processor information in registry 2 TTPs 26 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	rundll32.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4884	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 2504	5088	85d07649652d200314947bb98e09ebc0.exe	85
PID 5088 wrote to memory of 2504	5088	85d07649652d200314947bb98e09ebc0.exe	85
PID 5088 wrote to memory of 2504	5088	85d07649652d200314947bb98e09ebc0.exe	85
PID 2504 wrote to memory of 4884	2504	rundll32.exe	91
PID 2504 wrote to memory of 4884	2504	rundll32.exe	91
PID 2504 wrote to memory of 4884	2504	rundll32.exe	91

C:\Users\Admin\AppData\Local\Temp\85d07649652d200314947bb98e09ebc0.exe
"C:\Users\Admin\AppData\Local\Temp\85d07649652d200314947bb98e09ebc0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll,start
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Checks processor information in registry
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 30693
    3⤵
    - Modifies registry class
    - Suspicious use of FindShellTrayWindow
    PID:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 480
  2⤵
  - Program crash
  PID:1544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5088 -ip 5088
1⤵
PID:1536

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Qdwywhepeywaes.dll

Path C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
Size 4.3MB
SHA256 31a24ed64746d3f1ff18f42d3723a7e429095f5a696b4744d0a13ae5431b89ca
MD5 8e3cb0c4bf0de0d7384602660d5f2978
SHA1 cb6d52c6de56935c11674a9acf52eba17a77dc80
SHA512 129c943e50f45e9cc2befc925e69f8feff8b3f1bddea699bb2c04a8701f08ed9be5fde1715dda48a7ab31aedfefd0cc986f08acf8c707e17ca42522656f55cb4
SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF5T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
MD5 SHA1 SHA512 SSDEEP

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Qdwywhepeywaes.dll

Path C:\Users\Admin\AppData\Local\Temp\Qdwywhepeywaes.dll
Size 4.3MB
SHA256 31a24ed64746d3f1ff18f42d3723a7e429095f5a696b4744d0a13ae5431b89ca
MD5 8e3cb0c4bf0de0d7384602660d5f2978
SHA1 cb6d52c6de56935c11674a9acf52eba17a77dc80
SHA512 129c943e50f45e9cc2befc925e69f8feff8b3f1bddea699bb2c04a8701f08ed9be5fde1715dda48a7ab31aedfefd0cc986f08acf8c707e17ca42522656f55cb4
SSDEEP 49152:nOiVRvonSIVka8sgtmaSXe4khacDvsOUh7BaSZ9TrK/R1gVGtF5T8xr:OiVKnPmaWtmaSXe4khjA8/R1gYt
MD5 SHA1 SHA512 SSDEEP

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memory/2504-144-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/2504-143-0x0000000003870000-0x00000000043E6000-memory.dmp

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memory/2504-156-0x0000000003870000-0x00000000043E6000-memory.dmp

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memory/2504-151-0x0000000004469000-0x000000000446B000-memory.dmp

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memory/2504-138-0x0000000000400000-0x0000000000850000-memory.dmp

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memory/2504-149-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/2504-140-0x0000000000400000-0x0000000000850000-memory.dmp

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memory/2504-146-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/2504-145-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/2504-142-0x0000000003870000-0x00000000043E6000-memory.dmp

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memory/2504-148-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/2504-141-0x0000000003870000-0x00000000043E6000-memory.dmp

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memory/2504-147-0x00000000043F0000-0x0000000004530000-memory.dmp

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memory/4884-152-0x0000014C82870000-0x0000014C829B0000-memory.dmp

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memory/4884-153-0x0000014C82870000-0x0000014C829B0000-memory.dmp

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memory/4884-154-0x0000000000590000-0x000000000082D000-memory.dmp

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memory/4884-155-0x0000014C829E0000-0x0000014C82C8F000-memory.dmp

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memory/5088-132-0x0000000004D35000-0x00000000050B7000-memory.dmp

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memory/5088-139-0x0000000000400000-0x0000000002F0A000-memory.dmp

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memory/5088-133-0x00000000050C0000-0x00000000055A2000-memory.dmp

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memory/5088-134-0x0000000000400000-0x0000000002F0A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads