ee5cd7f14bf98534291bdb1b34d1424bebb1fbc27e01915ff15e928dc9ea73f6

Resubmissions

24/10/2022, 15:23

221024-sszl1ahdgk10

21/09/2022, 10:27

21/09/2022, 09:50

21/09/2022, 09:48

21/09/2022, 08:03

Analysis

max time kernel
1755s
max time network
1564s
platform
windows10-2004_x64
resource
win10v2004-20220812-it
resource tags

arch:x64arch:x86image:win10v2004-20220812-itlocale:it-itos:windows10-2004-x64systemwindows
submitted
21/09/2022, 09:50

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General

Target
windll.exe
Size 1.8MB
Sample220921-lt5fbagab2
SHA256 ee5cd7f14bf98534291bdb1b34d1424bebb1fbc27e01915ff15e928dc9ea73f6
MD5 55f28c1e8bdf171d4db09a14543d4cb0
SHA1 cc004905a343dea0db7097184468dbe10ec59567
SHA512 d8ca745e0ce8ff95ef83e4b0357c900b3f98f6679fbd33b6d7682933512d4e9ea33304c3c215af09bd180c3177fb9347c88d35f0b3dc81b78efb248c7dd4d0df
SSDEEP 49152:Lqq3LdX/ec0RiA9p+F/ec0RiA9p+x/ec0RiA9p+X:LqMLl/R0UMG/R0UM8/R0UMc
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery spyware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	windll.exe

Loads dropped DLL 2 IoCs

pid	Process
4872	windll.exe
4872	windll.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 2FA software files, possible credential harvesting 2 TTPs
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4420 set thread context of 4872	4420	windll.exe	81

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

System Information Discovery
T1082

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	windll.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	windll.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
380	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4832	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4872	windll.exe
4872	windll.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4832	taskkill.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 4872	4420	windll.exe	81
PID 4420 wrote to memory of 4872	4420	windll.exe	81
PID 4420 wrote to memory of 4872	4420	windll.exe	81
PID 4420 wrote to memory of 4872	4420	windll.exe	81
PID 4420 wrote to memory of 4872	4420	windll.exe	81
PID 4872 wrote to memory of 3888	4872	windll.exe	86
PID 4872 wrote to memory of 3888	4872	windll.exe	86
PID 4872 wrote to memory of 3888	4872	windll.exe	86
PID 3888 wrote to memory of 4832	3888	cmd.exe	88
PID 3888 wrote to memory of 4832	3888	cmd.exe	88
PID 3888 wrote to memory of 4832	3888	cmd.exe	88
PID 3888 wrote to memory of 380	3888	cmd.exe	91
PID 3888 wrote to memory of 380	3888	cmd.exe	91
PID 3888 wrote to memory of 380	3888	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\windll.exe
"C:\Users\Admin\AppData\Local\Temp\windll.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Users\Admin\AppData\Local\Temp\windll.exe
  "C:\Users\Admin\AppData\Local\Temp\windll.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" \/c taskkill /im windll.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\windll.exe" & del C:\PrograData\*.dll & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3888
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /im windll.exe /f
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:4832
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 6
      4⤵
      Delays execution with timeout.exe
      PID:380

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4872-133-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/4872-134-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/4872-135-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/4872-136-0x0000000000400000-0x000000000045B000-memory.dmp

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memory/4872-137-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/4872-158-0x0000000000400000-0x000000000045B000-memory.dmp

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