farfli | a929585fd23979b360508e79adb35254a2994f68ac4901c0ed6cc1e028c08797

Analysis

max time kernel
148s
max time network
139s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 10:37

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General

Target
2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_elex_wannacry.exe
Size 404KB
Sample261014-mn9zaaff57
SHA256 a929585fd23979b360508e79adb35254a2994f68ac4901c0ed6cc1e028c08797
MD5 dd67e2ba72b7bc57ede0abda61e10e47
SHA1 65ca9fe0de6ac5509b024164effe5fb0381729e7
SHA512 8367447a2eb1a9340ac100b68e988cc14116f7200385c00c05211a98f1d5047cce227a798e744cdcb6f54173e90b426686a46b1b6a37bbe962cb62dbbb5ea9a4
SSDEEP 6144:JtecHBTSpjVfs3mCL17O/cvARZZWcStoWwABr8iXpXxr2kDQH/9M:nHBTwjBqbYkvqZMcV7i32ie
TLSH
T11494CF2332C0C8B7C1D17373FEE6AA72E3F5C2A85D356A7753EA014D1E2744C92562A9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer upx

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 5 IoCs

resource	yara_rule
behavioral2/memory/1104-13-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral2/memory/1104-11-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral2/memory/1104-16-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral2/memory/1104-18-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral2/memory/1104-21-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/1104-13-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1104-11-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1104-16-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1104-18-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1104-21-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
1216	jhuzvx.exe

Executes dropped EXE 2 IoCs

pid	Process
1216	jhuzvx.exe
1104	olrypga.exe

Loads dropped DLL 1 IoCs

pid	Process
1104	olrypga.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-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\DESIME = "c:\\Program Files\\ypmnx\\olrypga.exe \"c:\\Program Files\\ypmnx\\olrypga.dll\",DoPrivacy"	olrypga.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)	\??\j:	olrypga.exe
File opened (read-only)	\??\k:	olrypga.exe
File opened (read-only)	\??\o:	olrypga.exe
File opened (read-only)	\??\p:	olrypga.exe
File opened (read-only)	\??\r:	olrypga.exe
File opened (read-only)	\??\w:	olrypga.exe
File opened (read-only)	\??\n:	olrypga.exe
File opened (read-only)	\??\t:	olrypga.exe
File opened (read-only)	\??\y:	olrypga.exe
File opened (read-only)	\??\a:	olrypga.exe
File opened (read-only)	\??\l:	olrypga.exe
File opened (read-only)	\??\m:	olrypga.exe
File opened (read-only)	\??\u:	olrypga.exe
File opened (read-only)	\??\v:	olrypga.exe
File opened (read-only)	\??\x:	olrypga.exe
File opened (read-only)	\??\z:	olrypga.exe
File opened (read-only)	\??\b:	olrypga.exe
File opened (read-only)	\??\d:	olrypga.exe
File opened (read-only)	\??\h:	olrypga.exe
File opened (read-only)	\??\q:	olrypga.exe
File opened (read-only)	\??\s:	olrypga.exe
File opened (read-only)	\??\g:	olrypga.exe
File opened (read-only)	\??\i:	olrypga.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	olrypga.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/624-0-0x0000000000400000-0x0000000000499000-memory.dmp	upx
behavioral2/memory/624-2-0x0000000000400000-0x0000000000499000-memory.dmp	upx
behavioral2/files/0x000d00000001b892-3.dat	upx
behavioral2/memory/1216-7-0x0000000000400000-0x0000000000499000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ypmnx	jhuzvx.exe
File created	\??\c:\Program Files\ypmnx\olrypga.dll	jhuzvx.exe
File created	\??\c:\Program Files\ypmnx\olrypga.exe	jhuzvx.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
4376	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 1 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	olrypga.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	2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jhuzvx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	olrypga.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
4376	cmd.exe
4976	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	olrypga.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	olrypga.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4976	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1104	olrypga.exe
1104	olrypga.exe
1104	olrypga.exe
1104	olrypga.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	olrypga.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
624	2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_elex_wannacry.exe
1216	jhuzvx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 4376	624	2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_elex_wannacry.exe	89
PID 4376 wrote to memory of 4976	4376	cmd.exe	91
PID 4376 wrote to memory of 1216	4376	cmd.exe	92
PID 1216 wrote to memory of 1104	1216	jhuzvx.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jhuzvx.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_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:4376
- - 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:4976
- - C:\Users\Admin\AppData\Local\Temp\jhuzvx.exe
    C:\Users\Admin\AppData\Local\Temp\\jhuzvx.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-14_dd67e2ba72b7bc57ede0abda61e10e47_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:1216
  - - \??\c:\Program Files\ypmnx\olrypga.exe
      "c:\Program Files\ypmnx\olrypga.exe" "c:\Program Files\ypmnx\olrypga.dll",DoPrivacy C:\Users\Admin\AppData\Local\Temp\jhuzvx.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1104

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

Indicator Removal

T1070

File Deletion

T1070.004

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

olrypga.exe

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

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jhuzvx.exe

Path C:\Users\Admin\AppData\Local\Temp\jhuzvx.exe
Size 404KB
SHA256 18ecf26865b6e1ba05b1faf65a1e6df5675dd4d1369ccffd51a9dcbb5d926934
MD5 c87f1a28a41b48666517574bef54c725
SHA1 2e2fb7da370e9f271b624d602d319e5bcb474ed0
SHA512 cb03138c57bdc77e7d56cc6ffb57fafee316489a58bc46f0b6d46e12596313fd366b589d26b17831318cd305a7e0dfa227dc30f35fecc4945a91b67f7f5038da
SSDEEP 6144:JtecHBTSpjVfs3mCL17O/cvARZZWcStoWwABr8iXpXxr2kDQH/9M:nHBTwjBqbYkvqZMcV7i32ie
TLSH
T14B94CF2332C0C8B7C1D17373FEE6AA72E3F5C2A85D356A7753EA014D1E2744C92562A9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

olrypga.dll

Path \??\c:\Program Files\ypmnx\olrypga.dll
Size 219KB
SHA256 ae1116c44d09063304fb77f2592e6c0960667fd45fb1ffa6f2d8bbac7bd12bde
MD5 d6bcadf685f7228a956482804038aec4
SHA1 703e237345210dde43734399cb90997b1dcce75a
SHA512 d2aa09f56cb592d289de3c201257f3c5cf1252205b91ccc2a6c201e419ffe4284d650c9f5852f9646573482192b7f16205e67bdd4ccc774336ecd3e4f58eb960
SSDEEP 6144:XxDink0qeQKc/A8MNfnX2p2KL5aI3iMK5:XAk9uNfnX2p2Q5aIx2
TLSH
T1A52413C4FF52EFCEE8610AF03B4FA2A9DF71586BC48202C114EE58535A65EA3F695701
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/624-2-0x0000000000400000-0x0000000000499000-memory.dmp

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memory/624-0-0x0000000000400000-0x0000000000499000-memory.dmp

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memory/1104-10-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1104-15-0x0000000002C50000-0x0000000002C51000-memory.dmp

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memory/1104-13-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1104-11-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1104-16-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1104-18-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1104-21-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1216-7-0x0000000000400000-0x0000000000499000-memory.dmp

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