f53982a4b61c992b33fc08a6a3749a624405748630af61371e675f499df60b5d

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/08/2026, 04:21

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General

Target
2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe
Size 592KB
Sample260807-eyp3vsfq41
SHA256 f53982a4b61c992b33fc08a6a3749a624405748630af61371e675f499df60b5d
MD5 809f0194cddad1b9d29be537a8d7189f
SHA1 f79c898ae86976fde986974e8e06b2e465a14337
SHA512 042a6a4e7b302c00449c687cbad7485a3e5f2ad608759c1dca00df218fc60a71212ebdd21766e10d4e8ae99b62606b83621577b444c2dfe16566cc71c13a74e5
SSDEEP 6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+lAz8:aqzw2wsEDbZ67fpLyUB/5qLlH
TLSH
T184D4AD13B2E48865E1A22A72CC7667F0DEF5BED4D935861F5F803A0D2933E00A6157A7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit discovery execution persistence spyware stealer upx

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/1856-12-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1856-11-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1856-14-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1856-16-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1856-19-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2280-0-0x0000000000400000-0x000000000048B000-memory.dmp	UPX
behavioral2/memory/2280-2-0x0000000000400000-0x000000000048B000-memory.dmp	UPX
behavioral2/files/0x000600000001b85f-3.dat	UPX
behavioral2/memory/4348-7-0x0000000000400000-0x000000000048B000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4348	dtnmaq.exe

Executes dropped EXE 2 IoCs

pid	Process
4348	dtnmaq.exe
1856	cmvynwl.exe

Loads dropped DLL 1 IoCs

pid	Process
1856	cmvynwl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\dtfd = "c:\\Program Files\\tfoaa\\cmvynwl.exe \"c:\\Program Files\\tfoaa\\cmvynwl.dll\",DoAddToFavDlg"	cmvynwl.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\x:	cmvynwl.exe
File opened (read-only)	\??\z:	cmvynwl.exe
File opened (read-only)	\??\a:	cmvynwl.exe
File opened (read-only)	\??\k:	cmvynwl.exe
File opened (read-only)	\??\q:	cmvynwl.exe
File opened (read-only)	\??\t:	cmvynwl.exe
File opened (read-only)	\??\i:	cmvynwl.exe
File opened (read-only)	\??\j:	cmvynwl.exe
File opened (read-only)	\??\u:	cmvynwl.exe
File opened (read-only)	\??\d:	cmvynwl.exe
File opened (read-only)	\??\g:	cmvynwl.exe
File opened (read-only)	\??\m:	cmvynwl.exe
File opened (read-only)	\??\o:	cmvynwl.exe
File opened (read-only)	\??\p:	cmvynwl.exe
File opened (read-only)	\??\r:	cmvynwl.exe
File opened (read-only)	\??\s:	cmvynwl.exe
File opened (read-only)	\??\y:	cmvynwl.exe
File opened (read-only)	\??\b:	cmvynwl.exe
File opened (read-only)	\??\h:	cmvynwl.exe
File opened (read-only)	\??\l:	cmvynwl.exe
File opened (read-only)	\??\n:	cmvynwl.exe
File opened (read-only)	\??\v:	cmvynwl.exe
File opened (read-only)	\??\w:	cmvynwl.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	cmvynwl.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2280-0-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/memory/2280-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/files/0x000600000001b85f-3.dat	upx
behavioral2/memory/4348-7-0x0000000000400000-0x000000000048B000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\tfoaa	dtnmaq.exe
File created	\??\c:\Program Files\tfoaa\cmvynwl.dll	dtnmaq.exe
File created	\??\c:\Program Files\tfoaa\cmvynwl.exe	dtnmaq.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5496	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dtnmaq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmvynwl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5496	cmd.exe
3328	PING.EXE

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3328	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1856	cmvynwl.exe
1856	cmvynwl.exe
1856	cmvynwl.exe
1856	cmvynwl.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1856	cmvynwl.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2280	2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe
4348	dtnmaq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 5496	2280	2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe	89
PID 5496 wrote to memory of 3328	5496	cmd.exe	91
PID 5496 wrote to memory of 4348	5496	cmd.exe	92
PID 4348 wrote to memory of 1856	4348	dtnmaq.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dtnmaq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5496
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3328
- - C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
    C:\Users\Admin\AppData\Local\Temp\\dtnmaq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_809f0194cddad1b9d29be537a8d7189f_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4348
  - - \??\c:\Program Files\tfoaa\cmvynwl.exe
      "c:\Program Files\tfoaa\cmvynwl.exe" "c:\Program Files\tfoaa\cmvynwl.dll",DoAddToFavDlg C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1856

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

cmvynwl.exe

Path C:\Program Files\tfoaa\cmvynwl.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

dtnmaq.exe

Path C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
Size 592KB
SHA256 23e74093d06b51e9fd1b4ca25c8b715b9862b0186fe5efeb25f038087b42dcb9
MD5 61857efab9138a2c4e0da8c3c4796a45
SHA1 0fac1e1b3a89e0c1135c63807a7a6bcf6e9147bd
SHA512 a4ca98c5b92a724fb3854dab130ce6951aa1fa513a86d80dd8bcfdde3626ab38ee13437ff98f3f9290d15727d7e22f1055fe7c8722e25fad1ee1342a9f6673f6
SSDEEP 6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+lAz9:aqzw2wsEDbZ67fpLyUB/5qLlQ
TLSH
T181D4AD13B2E48865E1A22A72CC7667F0DEF5BED4D935861F5F803A0D2933E00A6157A7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cmvynwl.dll

Path \??\c:\Program Files\tfoaa\cmvynwl.dll
Size 171KB
SHA256 875b5869b23a96fdd382866ebaa2a9d99133d48aacd451dbddb52e595c77fb3e
MD5 e6912d8eabb567759f880981cdbd407d
SHA1 fbe682024b4e62c3a725812ba2707549f0f8dae7
SHA512 1adc20f113a6c646afbed5b8bd41802ee459b39dbb1687b4d973b18e839a54500cd223a1156d4152038daa1f190daf8e4e385f7f6023aa81cbde6b2784b21a47
SSDEEP 3072:R2Iz9CI8mUOtDDPwLkBLXLDFkKmvzXBpLHYmmO1QezRd7UcPa1xMjM7Y:Rjz9X8mXGUXVPmr9mOzRd7UcPKoMk
TLSH
T1460412B0F3F98759F0A716770831597CC97639826329237FC2889A6EAC5442FF18D764
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1856-10-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/1856-13-0x0000000002C80000-0x0000000002C82000-memory.dmp

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memory/1856-12-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/1856-11-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/1856-14-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/1856-16-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/1856-19-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/2280-2-0x0000000000400000-0x000000000048B000-memory.dmp

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memory/2280-0-0x0000000000400000-0x000000000048B000-memory.dmp

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memory/4348-7-0x0000000000400000-0x000000000048B000-memory.dmp

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