496c103db9fe25e45c8a15292847a9f4dc384d51d882f77097a789ae206ccdfd

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
21/04/2026, 09:45

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General

Target
2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe
Size 586KB
Sample260421-lrbefsct3r
SHA256 496c103db9fe25e45c8a15292847a9f4dc384d51d882f77097a789ae206ccdfd
MD5 436da7b48e9679cf172f061e0da63561
SHA1 4b09719f2e409810250559de8fe792ab8b28ea44
SHA512 a2326e46201319ae11b38f7de37c91f3a4efbda72740188de06e12068add9ec589a3df2068e3e95fd3cb13d75cf7af6f8fb1cf06e5bf46a56a9f1a8b2805e659
SSDEEP 6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+lA6:aqzw2wsEDbZ67fpLyUB/5qLlX
TLSH
T103D4AD13B2E4C855E1A22A32CC7667B0DEF5BED4D9358A1F5F843A0D2933E00A7157A7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/3952-15-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3952-16-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3952-19-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3952-23-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3952-27-0x0000000010000000-0x0000000010052000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4868-0-0x0000000000400000-0x000000000048B000-memory.dmp	UPX
behavioral2/memory/4868-2-0x0000000000400000-0x000000000048B000-memory.dmp	UPX
behavioral2/files/0x001d00000002b22a-4.dat	UPX
behavioral2/memory/4724-6-0x0000000000400000-0x000000000048B000-memory.dmp	UPX
behavioral2/memory/4724-11-0x0000000000400000-0x000000000048B000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4724	gcamhzb.exe

Executes dropped EXE 2 IoCs

pid	Process
4724	gcamhzb.exe
3952	pnh.exe

Loads dropped DLL 1 IoCs

pid	Process
3952	pnh.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-1-5-21-3847269522-1618051987-1942096715-1000\Software\Microsoft\Windows\CurrentVersion\Run\dtfd = "c:\\Program Files\\nwmqa\\pnh.exe \"c:\\Program Files\\nwmqa\\pnhlc.dll\",DoAddToFavDlg"	pnh.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)	\??\a:	pnh.exe
File opened (read-only)	\??\g:	pnh.exe
File opened (read-only)	\??\i:	pnh.exe
File opened (read-only)	\??\z:	pnh.exe
File opened (read-only)	\??\b:	pnh.exe
File opened (read-only)	\??\e:	pnh.exe
File opened (read-only)	\??\k:	pnh.exe
File opened (read-only)	\??\l:	pnh.exe
File opened (read-only)	\??\n:	pnh.exe
File opened (read-only)	\??\o:	pnh.exe
File opened (read-only)	\??\r:	pnh.exe
File opened (read-only)	\??\u:	pnh.exe
File opened (read-only)	\??\h:	pnh.exe
File opened (read-only)	\??\j:	pnh.exe
File opened (read-only)	\??\m:	pnh.exe
File opened (read-only)	\??\p:	pnh.exe
File opened (read-only)	\??\q:	pnh.exe
File opened (read-only)	\??\s:	pnh.exe
File opened (read-only)	\??\w:	pnh.exe
File opened (read-only)	\??\y:	pnh.exe
File opened (read-only)	\??\t:	pnh.exe
File opened (read-only)	\??\v:	pnh.exe
File opened (read-only)	\??\x:	pnh.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	pnh.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4868-0-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/memory/4868-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/files/0x001d00000002b22a-4.dat	upx
behavioral2/memory/4724-6-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/memory/4724-11-0x0000000000400000-0x000000000048B000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\nwmqa	gcamhzb.exe
File created	\??\c:\Program Files\nwmqa\pnhlc.dll	gcamhzb.exe
File created	\??\c:\Program Files\nwmqa\pnh.exe	gcamhzb.exe
File opened for modification	\??\c:\Program Files\nwmqa\pnh.exe	gcamhzb.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gcamhzb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pnh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.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
5032	cmd.exe
3536	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	pnh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	pnh.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3536	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3952	pnh.exe
3952	pnh.exe
3952	pnh.exe
3952	pnh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3952	pnh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4868	2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe
4724	gcamhzb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 5032	4868	2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe	80
PID 5032 wrote to memory of 3536	5032	cmd.exe	82
PID 5032 wrote to memory of 4724	5032	cmd.exe	83
PID 4724 wrote to memory of 3952	4724	gcamhzb.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gcamhzb.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-21_436da7b48e9679cf172f061e0da63561_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5032
- - 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:3536
- - C:\Users\Admin\AppData\Local\Temp\gcamhzb.exe
    C:\Users\Admin\AppData\Local\Temp\\gcamhzb.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-21_436da7b48e9679cf172f061e0da63561_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:4724
  - - \??\c:\Program Files\nwmqa\pnh.exe
      "c:\Program Files\nwmqa\pnh.exe" "c:\Program Files\nwmqa\pnhlc.dll",DoAddToFavDlg C:\Users\Admin\AppData\Local\Temp\gcamhzb.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:3952

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Replay Monitor

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Downloads

pnh.exe

Path C:\Program Files\nwmqa\pnh.exe
Size 40KB
SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
MD5 22bb5bd901d8b25ac5b41edbb7d5053e
SHA1 8a935dd8d7e104fc553ff7e8b54a404f7b079334
SHA512 cc3fb68fd6791a08e4a7d1a8db8d07cfcc8c9b9dceec10b53f0cb7ee86473303a19be4f23e379f84c59e02d0568e7c066e21cd1300f6032dac4ba52f609f62e7
SSDEEP 768:C67uhQpPPp0nnqFk509FRdVcQX6N58hJYim1jLP3RRe:C67uhQpXp0nnqa5093jKNAmB3RR
TLSH
T10C134C02BE88C071DDA114B41A5DB337939DED604B1586D3593887EBAA2D3E39E343DE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

gcamhzb.exe

Path C:\Users\Admin\AppData\Local\Temp\gcamhzb.exe
Size 586KB
SHA256 a32a6fbfb59436d75a55b9f9aed5a094a3c1a7fc176c24fa81e572c6ffd0ee13
MD5 5b9cd43913ed9d576a065713fb2d7464
SHA1 5d843c0529529a0ca142646d4b778efb209d8c92
SHA512 1e7925477eecc6d1aef870d8dd1c43d8aa7b9d4c9e3d1220c726437efc79777c3fca85bfd4b4fb8ba7f4ef087b58851be4cfc6e525a65a219ef1693e89826e70
SSDEEP 6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+lA/:aqzw2wsEDbZ67fpLyUB/5qLlO
TLSH
T1AED4AD13B2E4C855E1A22A32CC7667B0DEF5BED4D9358A1F5F843A0D2933E00E6157A7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

pnhlc.dll

Path \??\c:\Program Files\nwmqa\pnhlc.dll
Size 171KB
SHA256 f3bf1eef0204103ffe758f5189b616b9362510766e7178b9f0ad4584e4345a26
MD5 6fed74c919aed1cf1b789bbd0740f4cb
SHA1 80d301eb87c7ff5eac6ccb2b51173e6465b6f70b
SHA512 0080b67395bec4cc4ba912a68324112b7855fd48328863b30cfb7ba1b42edb7c4a28f84b29722402406fbf3bdeb973e25c02dc8bcadcb87543fcc219596fc2c1
SSDEEP 3072:R2Iz9CI8mUOtDDPwLkBLXLDFkKmvzXBpLHYmmO1QezRd7UcPa1xMjM7Q:Rjz9X8mXGUXVPmr9mOzRd7UcPKoM0
TLSH
T14D0412B0F3F98B59F0A716770831597CC97639826329237FC2886A6EAC5442FF18D764
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3952-20-0x00000000013B0000-0x00000000013B6000-memory.dmp

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memory/3952-27-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/3952-23-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/3952-19-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/3952-15-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/3952-18-0x0000000001390000-0x0000000001392000-memory.dmp

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memory/3952-17-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/3952-16-0x0000000010000000-0x0000000010052000-memory.dmp

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memory/4724-6-0x0000000000400000-0x000000000048B000-memory.dmp

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memory/4724-11-0x0000000000400000-0x000000000048B000-memory.dmp

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memory/4868-0-0x0000000000400000-0x000000000048B000-memory.dmp

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memory/4868-2-0x0000000000400000-0x000000000048B000-memory.dmp

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