farfli | 7dc4188a1e953b89314c359f5057302cae17b61248c8c083ee7554367e3ca8b8

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/07/2026, 22:52

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General

Target
2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe
Size 295KB
Sample260702-2tpb4af18s
SHA256 7dc4188a1e953b89314c359f5057302cae17b61248c8c083ee7554367e3ca8b8
MD5 46ff5149a4d829d7ba23ebc4d09103cb
SHA1 5b76366599c509048754a0ab367ad2fda9444687
SHA512 b51182752d3df3f6cf0c759c9c86803efa14e6fc771c77c4c52f8f83e02f5493abc991599047ff4b59aea8e0b6b10e22c5d3f648f626a6b3c9c4035e9cd544cb
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOg:ywLcCmuErglr73aAD+z
TLSH
T143540282E501DF07EC3FC7B6813E5E291217AF621B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 6 IoCs

resource	yara_rule
behavioral1/memory/3812-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/3812-14-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/3812-16-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/3812-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/3812-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/3812-21-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 6 IoCs

resource	yara_rule
behavioral1/memory/3812-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3812-14-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3812-16-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3812-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3812-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3812-21-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2100-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral1/memory/2100-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral1/files/0x00070000000238c4-4.dat	UPX
behavioral1/memory/2436-7-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
5	3812	rundll32.exe
16	3812	rundll32.exe
17	3812	rundll32.exe
18	3812	rundll32.exe
35	3812	rundll32.exe
36	3812	rundll32.exe
39	3812	rundll32.exe
45	3812	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2436	ahkxsxggw.exe

Executes dropped EXE 1 IoCs

pid	Process
2436	ahkxsxggw.exe

Loads dropped DLL 1 IoCs

pid	Process
3812	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-1-5-21-668679576-120646659-2289335452-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\czfsd\\jmhuvdoj.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)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	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
behavioral1/memory/2100-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2100-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/files/0x00070000000238c4-4.dat	upx
behavioral1/memory/2436-7-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\czfsd	ahkxsxggw.exe
File created	\??\c:\Program Files\czfsd\jmhuvdoj.dll	ahkxsxggw.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	ahkxsxggw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_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
4896	cmd.exe
3408	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	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
3408	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3812	rundll32.exe
3812	rundll32.exe
3812	rundll32.exe
3812	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3812	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2100	2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe
2436	ahkxsxggw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 4896	2100	2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe	85
PID 4896 wrote to memory of 3408	4896	cmd.exe	87
PID 4896 wrote to memory of 2436	4896	cmd.exe	88
PID 2436 wrote to memory of 3812	2436	ahkxsxggw.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ahkxsxggw.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4896
- - 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:3408
- - C:\Users\Admin\AppData\Local\Temp\ahkxsxggw.exe
    C:\Users\Admin\AppData\Local\Temp\\ahkxsxggw.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_46ff5149a4d829d7ba23ebc4d09103cb_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:2436
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\czfsd\jmhuvdoj.dll",GetProc C:\Users\Admin\AppData\Local\Temp\ahkxsxggw.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:3812

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

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Downloads

ahkxsxggw.exe

Path C:\Users\Admin\AppData\Local\Temp\ahkxsxggw.exe
Size 295KB
SHA256 3ecd3face1bdd6e824e8952517ec48bf279e3a633a0d917c1b81cc6c5c00796d
MD5 6fbf605aa4aafd25c06b6d7536f16273
SHA1 8cecee56409fc5832603dca245b007e2873c8482
SHA512 a023809034fe9accc5a84e6c8a18fc1ad0bc63f20362e7620295a5a1b407e83754ad78859ce95126531c86f1f2e805374540a85a0886f22a43342347aac822b1
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO+:ywLcCmuErglr73aAD+R
TLSH
T1BC540282E501DF07EC2FC7B6813E5E251217AF622B705597D3C4B91E26B3682B63E0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

jmhuvdoj.dll

Path \??\c:\Program Files\czfsd\jmhuvdoj.dll
Size 218KB
SHA256 681828a2cce5824a56fe5be803689a63a30a07fdccf04e851ae6fa72e1409799
MD5 77a38dd7d2c6892b601857338f566c9c
SHA1 de504569ea294e4c4fe07bac4b439a60597f3db0
SHA512 b59eee64b3793077c0a6aad197e53f6902c4d51fb7fdc288329b256670b9f2b93028322929f84bf6cc16d0d9b064415c409b2ad88b5a4d328dae19d2cb7957bc
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytN:pnNwDTi3swddDiROXI7
TLSH
T1A224124BCF983873C5223379597951A0B9325290AFA1530DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2100-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/2100-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/2436-7-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/3812-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-11-0x0000000001570000-0x0000000001571000-memory.dmp

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memory/3812-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-14-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-16-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-17-0x0000000001570000-0x0000000001571000-memory.dmp

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memory/3812-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3812-21-0x0000000010000000-0x0000000010058000-memory.dmp

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