farfli | ffaa3bb135d21c58ff82944c35f2b23a99ff6f920416f609a4c7994010862785

Analysis

max time kernel
148s
max time network
139s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
17/08/2026, 19:08

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General

Target
2026-08-17_6355c21a4a383671d026304ee4e2708e_coinminer_elex_wannacry.exe
Size 298KB
Sample260817-xtds5sgl3v
SHA256 ffaa3bb135d21c58ff82944c35f2b23a99ff6f920416f609a4c7994010862785
MD5 6355c21a4a383671d026304ee4e2708e
SHA1 7ee451b2c2b761e624c4f08a47ccdad002f6e306
SHA512 597fe95549820e80d61001feb9765fa49e9dd6c68d3291c0e2c8a2d6856f2eb9fb38fe6133c48b9b26cabe870fec5f321be8ff5561d9ae6bf908271ad07ede4b
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T1FE540282E501DF17EC2FC7B6813E5E291217AF621B705597D3C0B91E26B3682B63A0DD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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 7 IoCs

resource	yara_rule
behavioral2/memory/476-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/476-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/476-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/476-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1316-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/1316-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x000d000000019cb1-3.dat	UPX
behavioral2/memory/1756-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
7	476	rundll32.exe
9	476	rundll32.exe
10	476	rundll32.exe
11	476	rundll32.exe
13	476	rundll32.exe
14	476	rundll32.exe
16	476	rundll32.exe
17	476	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1756	ebxvrhmg.exe

Executes dropped EXE 1 IoCs

pid	Process
1756	ebxvrhmg.exe

Loads dropped DLL 1 IoCs

pid	Process
476	rundll32.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-1-5-21-3986082593-3624157295-3514260330-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ewzeejy\\bdryij.dll\",GetProc"	rundll32.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)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.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	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1316-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/1316-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x000d000000019cb1-3.dat	upx
behavioral2/memory/1756-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ewzeejy	ebxvrhmg.exe
File created	\??\c:\Program Files\ewzeejy\bdryij.dll	ebxvrhmg.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
5388	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	2026-08-17_6355c21a4a383671d026304ee4e2708e_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ebxvrhmg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
1740	PING.EXE
5388	cmd.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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1740	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
476	rundll32.exe
476	rundll32.exe
476	rundll32.exe
476	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	476	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1316	2026-08-17_6355c21a4a383671d026304ee4e2708e_coinminer_elex_wannacry.exe
1756	ebxvrhmg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 5388	1316	2026-08-17_6355c21a4a383671d026304ee4e2708e_coinminer_elex_wannacry.exe	89
PID 5388 wrote to memory of 1740	5388	cmd.exe	91
PID 5388 wrote to memory of 1756	5388	cmd.exe	92
PID 1756 wrote to memory of 476	1756	ebxvrhmg.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-17_6355c21a4a383671d026304ee4e2708e_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-17_6355c21a4a383671d026304ee4e2708e_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ebxvrhmg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-17_6355c21a4a383671d026304ee4e2708e_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:5388
- - 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:1740
- - C:\Users\Admin\AppData\Local\Temp\ebxvrhmg.exe
    C:\Users\Admin\AppData\Local\Temp\\ebxvrhmg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-17_6355c21a4a383671d026304ee4e2708e_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:1756
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\ewzeejy\bdryij.dll",GetProc C:\Users\Admin\AppData\Local\Temp\ebxvrhmg.exe
      4⤵
      Badlisted process makes network request
      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:476

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

ebxvrhmg.exe

Path C:\Users\Admin\AppData\Local\Temp\ebxvrhmg.exe
Size 298KB
SHA256 98a2fd3fde0cec11feeb97f9c322ae17d7b14c40149de8729795538a44f5adaa
MD5 a30175b21bc2ca30e40d4c0d0dfc7dbe
SHA1 a0b7f3c65aca85516ee81f3094292afe0f043bcb
SHA512 abda78f5071007f3453a95549bf171193c7d29765c020e0edbbf9bde403e167c91e77e5fea3b7767187d0378444811f3bccad42c7a0a14c72fd3284123621233
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOA:ywLcCmuErglr73aAD+l
TLSH
T15A540282E501DF17EC2FC7B6813E5E291217AF621B705593D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bdryij.dll

Path \??\c:\Program Files\ewzeejy\bdryij.dll
Size 218KB
SHA256 1f58077f6e2b36dc4fc599ac232c33742913ab795c883cf172f82977f04a10c4
MD5 21f515a9be6fa5984b3fc6b6452c9a86
SHA1 0f528d0408304794ed439ada505153d8e0c09dbf
SHA512 3c34cab2b1eb2d1d3573002dd584fdc0bef965cba9941d3f49414adc10450d7c440332a975c0707f9bad1b0c6ea31e61de20fa4c88954f19a1caa0f56784c522
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytl:pnNwDTi3swddDiROXI7
TLSH
T17A241287CF983873C5223379597951A0B9725290AFA1930DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/476-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-14-0x0000000001290000-0x0000000001291000-memory.dmp

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memory/476-17-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/476-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1316-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/1316-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/1756-6-0x0000000000400000-0x0000000000483000-memory.dmp

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