44593f2948e2800c83e9d21abb9759e206ea94385ee5c0ddc9dc6a3e4d09273d

Analysis

max time kernel
60s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2022, 12:37

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General

Target
4d58a9940e17460a7de4ec920298179d.exe
Size 197KB
Sample221012-ptf99sdebr
SHA256 44593f2948e2800c83e9d21abb9759e206ea94385ee5c0ddc9dc6a3e4d09273d
MD5 4d58a9940e17460a7de4ec920298179d
SHA1 37079474544d1bf9c19118853651d3239fc09946
SHA512 e44576bcf22042e1eb3be16cefdd6a144c8c6cd3bc8daa02c0d76299b24a1900cf5801a61db7155caef9e1ebf2e9a5ca108acf87f44155c24413073e1a8222c5
SSDEEP 3072:XrtHTIN7WXsrbiUSAY4pf7JCIaxIJlShDGbm/5uDGWqB2l7nXkP0N:XZzXcrjztp7JliNum/5eX1N
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

collection discovery spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
11	4616	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
4616	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\12.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\10.0\Outlook\Profiles\Outlook	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\11.0\Outlook\Profiles\Outlook	rundll32.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3444	4616	WerFault.exe	85

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4616	rundll32.exe
4616	rundll32.exe
4616	rundll32.exe
4616	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 4616	4396	4d58a9940e17460a7de4ec920298179d.exe	85
PID 4396 wrote to memory of 4616	4396	4d58a9940e17460a7de4ec920298179d.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\4d58a9940e17460a7de4ec920298179d.exe
"C:\Users\Admin\AppData\Local\Temp\4d58a9940e17460a7de4ec920298179d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Windows\system32\rundll32.exe
  "C:\Users\Admin\AppData\Roaming\nsis_unse570177.dll",PrintUIEntry |5CQkOhiAAAA|1TKr5GsMwYD|67sDqg8OAAl|xYmwxC0TNSO|1k8B3tZkgiyf2sAZQByAG4XAP9sADMAMgAuAOVkHwBs8|AtBUEAMOsAYiMAdz8AZAAx|iMAegBXAFgATfsARi0CWUiD7Cj|6AQCAABIg8T|KMPMzMxMiUT|JBhIiVQkEEjviUwkCFkBSItEvyQwSIkEJH0BOP1IawAISMdEJBD2LQHrDn0BEEiDwHUBiwEQfQFASDmSAPtzJZsDiwwkSAN|yEiLwUiLTKcB|VR3AAPRSIvKit8JiAjrwWIFZUjviwQlYPPwM8lI|4tQGEg70XQ2|0iDwiBIiwJI|zvCdCpmg3hI|xh1GkyLQFBmv0GDOGt0Bw0RS|t1CA0QeBAudAX|SIsA69VIi0j6+QDBZgBAU1VWV|9BVEFVQVZBV|5ZAWaBOU1aTYv|+EyL8kiL2Q|7hfzz8ExjSTxB|4E8CVBFAAAPe4XqNQGLhAmI8|D|hcBIjTwBD4S91jUBg7wJjC0BD|uEx|PwRItnIET|i18ci3ckRIv|TxhMA+FMA9n|SAPxM8lFhcn3D4Sk8|BNi8RB|4sQRTPSSAPT|4oChMB0HUHB38oND77A9gABRPsD0LsRdexBgfr|qvwNfHQOg8H|AUmDwARBO8n|c2nrxovBD7f|DE5FiyyLTAPf63RYM+2mEHRR90GLFL0A0zPJiv8CTIvC6w|ByfbEEQPI4RABQYoA|tEQ7TPAM|ZBO|MMttwQogCDxgGD||gIcu7rCkiL|8tB|9VJiQT3+4PF4BDEBDtvGPtyr2IBQV9BXkF|XUFcX15dWy8X30iB7GABYACL6f|oZv7||0iFwLcPhJlxIEyNqwGLvicQyDP|6Jt5II3|XwRMjUVCM9K|i8v|VCRofCBMX4vgD4RscSBFpBDvM8CL040gSIl86yQgoiBwfCBIi|DnD4RMcSCiIFBIjf9WCESNR0BIjfuMJIERSIvY6Hxd|XogjVZI2iAQ3iHtzPPw6GfrIESLBqeNVwg9IKIgWMYhideEJICDEt3z8IsOHtYgWImMJG0RAzCNIPvoMesgTItdOovdrCkySIucFjJMif9kJDhEjWdsSfc77EiGIDBMiVxugAGEJNyDEYaO4yH63yDwrBNIi9Po5+38ATCKnHMySI2E|nMyQYDzIUmLzPdEMBigAoPpAXX384G8czIhUmV4v3VKi4Qk9B4xlPsk+PPwA8JIO+j|cjVBO9R2MET|jUlASSvUQbjpAJQAoiBAxiL4dBd5RLQwvjFIjVNsjSDfTSvE6GyAMEiL|c6iIHhIhf90FPlMjDAXMUiNTCRA+7oD8|D|10iBxAxwIV0kAAA=
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Accesses Microsoft Outlook profiles
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - outlook_office_path
  - outlook_win_path
  PID:4616
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 4616 -s 300
    3⤵
    - Program crash
    PID:3444

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 472 -p 4616 -ip 4616
1⤵
PID:2524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

nsis_unse570177.dll

Path C:\Users\Admin\AppData\Roaming\nsis_unse570177.dll
Size 58KB
SHA256 92a7c3296a561fb39798f821173e69d1feff44ff3a84caa4c6bb890945e79488
MD5 664e46926466a2d4c9b87540f4853c39
SHA1 b172d1c2bde331770b0a944fcf6a9e2d75ded66b
SHA512 1490ee65220c71a9f445df4b0f34d0c7bd3ece2e58253cfa3194d34e813843e0f71ea7bce0f0ae562a620334fdf3589262ca2f3209414936aa28a365db64ff03
SSDEEP 768:aEyyCgsO1b32pU6Lwt3MVZwvze59kzs51oP6nVbKXYuhCCsycF9Lh0:agj1b2PMFE5ys51oPaVbK5G9Lh0
MD5 SHA1 SHA512 SSDEEP

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nsis_unse570177.dll

Path C:\Users\Admin\AppData\Roaming\nsis_unse570177.dll
Size 58KB
SHA256 92a7c3296a561fb39798f821173e69d1feff44ff3a84caa4c6bb890945e79488
MD5 664e46926466a2d4c9b87540f4853c39
SHA1 b172d1c2bde331770b0a944fcf6a9e2d75ded66b
SHA512 1490ee65220c71a9f445df4b0f34d0c7bd3ece2e58253cfa3194d34e813843e0f71ea7bce0f0ae562a620334fdf3589262ca2f3209414936aa28a365db64ff03
SSDEEP 768:aEyyCgsO1b32pU6Lwt3MVZwvze59kzs51oP6nVbKXYuhCCsycF9Lh0:agj1b2PMFE5ys51oPaVbK5G9Lh0
MD5 SHA1 SHA512 SSDEEP

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memory/4396-132-0x0000000002180000-0x000000000219A000-memory.dmp

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memory/4396-133-0x00000000021E0000-0x00000000021FD000-memory.dmp

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memory/4396-139-0x00000000021E0000-0x00000000021FD000-memory.dmp

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memory/4616-137-0x000002471E530000-0x000002471E537000-memory.dmp

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memory/4616-138-0x00007FF46B880000-0x00007FF46B973000-memory.dmp

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memory/4616-140-0x00007FF46B880000-0x00007FF46B973000-memory.dmp

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memory/4616-141-0x0000000010000000-0x0000000010013000-memory.dmp

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