farfli | 78c5ecff3ac62cc9a92ea9adc1b2b5e6d2a846ce706653b456805cb46f1ad70d

Analysis

max time kernel
149s
max time network
145s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/07/2026, 22:01

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General

Target
2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe
Size 84KB
Sample260705-1xp75abx4j
SHA256 78c5ecff3ac62cc9a92ea9adc1b2b5e6d2a846ce706653b456805cb46f1ad70d
MD5 b1a8586166349be4256811a909a597f6
SHA1 db0369553d718ebb1598b7b3f893c5e3fbb84803
SHA512 22d54194d07387e441c3c35c59cfe595f9b48212e4c3d28c4ade9938a119edbd34913eabf1f24c544da601129b3aec215c7138e2b8b86658620b178859ba0db6
SSDEEP 1536:m/14ZaKO/myxZmAijMcCwVVydoM1bKAQAH9M53e+iWtnSd:a14ZaKOTZSMcJVgDKxAH9MhtfSd
TLSH
T11C83CF232FBB0135DD449F711E6B2669E6F2BD36212082728B5CDD8DA93CE44DB0171C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral2/memory/6112-11-0x0000000010000000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/6112-13-0x0000000010000000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/6112-11-0x0000000010000000-0x0000000010021000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6112-13-0x0000000010000000-0x0000000010021000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
1	6112	rundll32.exe
2	6112	rundll32.exe
3	6112	rundll32.exe
4	6112	rundll32.exe
5	6112	rundll32.exe
6	6112	rundll32.exe
7	6112	rundll32.exe
8	6112	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4120	mohmy.exe

Executes dropped EXE 1 IoCs

pid	Process
4120	mohmy.exe

Loads dropped DLL 1 IoCs

pid	Process
6112	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-1-5-21-2900715619-172032027-1873877232-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\zhijy\\cqxuk.dll\",GetWindowClass"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	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

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-05_b1a8586166349be4256811a909a597f6_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	mohmy.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
5604	cmd.exe
3096	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3096	PING.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe
6112	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6112	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3700	2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe
4120	mohmy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 5604	3700	2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe	89
PID 5604 wrote to memory of 3096	5604	cmd.exe	91
PID 5604 wrote to memory of 4120	5604	cmd.exe	92
PID 4120 wrote to memory of 6112	4120	mohmy.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3700
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\mohmy.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5604
- - 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:3096
- - \??\c:\mohmy.exe
    c:\mohmy.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-05_b1a8586166349be4256811a909a597f6_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4120
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\zhijy\cqxuk.dll",GetWindowClass c:\mohmy.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:6112

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

mohmy.exe

Path \??\c:\mohmy.exe
Size 84KB
SHA256 7b6bd79a861d970c9a932a89f4e846a476cd830a72debd7e475cf6715854c096
MD5 810d50058fd906bdd2ea7cb3cce3bf65
SHA1 f434c062bc13320048ba2c760e4560a0937aeb61
SHA512 56968d130599a3e29395f5b95be3cf3f544bbb36c2b36f51db1299a04c5f5efdfb7232e865ab4eacad955af3a184303f9c21d12542fbd04a22b0910f43c8a510
SSDEEP 1536:m/14ZaKO/myxZmAijMcCwVVydoM1bKAQAH9M53e+iWtnSdy:a14ZaKOTZSMcJVgDKxAH9MhtfSdy
TLSH
T1C883CF232FBB0135DD449F711E6B2669E6F2BD36212082B28B5CDD8DA93CE44DB0171C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cqxuk.dll

Path \??\c:\zhijy\cqxuk.dll
Size 43KB
SHA256 0b747c32730f2ad29b44299054bc22f8075702b081e91edaaead528abca227d2
MD5 0164aeb78f4d2181e817a9a6b0ad22f1
SHA1 c56c6a743e48e8652707a34e4cddc1f645f140ea
SHA512 e69ad90790d8062a903954f7ea85cacd241113afaf0eb16098f473835cffcda6e1f9fa9844a8618cc297fffa2e6ff7d458f9ebb2ce3febf7ffd683ffd6ad44f5
SSDEEP 768:2DdBa8mqIOiSUZrBGhvQLq6UYiaKRsRMwwY2BjkTrXW/VJZ581swUqHhiQREQoJs:kwqnPUb+v0q6UY+sRMwwY2Jkal+1ZUqJ
TLSH
T19613F133EACCDFDFF8A05271C576D0FCD337AC2849669A0395A0219D9D60948B878F66
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3700-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3700-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4120-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/6112-9-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/6112-10-0x0000000000700000-0x0000000000702000-memory.dmp

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memory/6112-11-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/6112-13-0x0000000010000000-0x0000000010021000-memory.dmp

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