farfli | b4bd9227e8be4f9311de2a5584d3cd801275acb9f76fcf1dbbb85ca7ad4d64bb

Analysis

max time kernel
149s
max time network
38s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
31/05/2026, 06:55

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe
Size 158KB
Sample260531-hp2bbadt3m
SHA256 b4bd9227e8be4f9311de2a5584d3cd801275acb9f76fcf1dbbb85ca7ad4d64bb
MD5 ab960a2aa5394f15e6fc50909154f4fd
SHA1 876602c3e8054495455d31fb8810995f98abdacb
SHA512 55034d51373044d3e588b54024ac87578063ef850f163183a09cc693436e4dc7d22a0942ed34fd2f2c680f5c4fc06a325900363d1eb49c9a664d5c07617bff1c
SSDEEP 1536:fli0XaKn5gYkqDqgEeEHgUyQLrdcUcsA08IzYJzKsoVXOeqD7hi/x0rTE86mwYUJ:di0XaKncqY31L2WXb0E86mwYUiu9
TLSH
T13BF37C26E7E58542E3B28F7046E35B63AE71FC145AED8B4F7B40A75E4838B00ED19364
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

67.229.62.194:3201
http://67.229.62.197:805/index.php
http://67.229.62.198:803/

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli
Family: Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat

Detects Farfli Backdoor 5 IoCs

resource	yara_rule
behavioral2/memory/4672-14-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/4672-15-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/4672-13-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/4672-16-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/4672-18-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/4672-14-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4672-15-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4672-13-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4672-16-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4672-18-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	4672	rundll32.exe
2	4672	rundll32.exe
3	4672	rundll32.exe
4	4672	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x001a00000002b547-10.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
2668	idcmzqwgl.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	idcmzqwgl.exe

Loads dropped DLL 1 IoCs

pid	Process
4672	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-1-5-21-1679180529-4058988202-686829476-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\dtzunedfj\\iqzlrks.dll\",AbortProc"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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:	rundll32.exe
File opened (read-only)	\??\b:	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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3840	4672	WerFault.exe	87

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	2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_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	idcmzqwgl.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
2980	cmd.exe
3884	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3884	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4672	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2556	2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe
2668	idcmzqwgl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2980	2556	2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe	83
PID 2980 wrote to memory of 3884	2980	cmd.exe	85
PID 2980 wrote to memory of 2668	2980	cmd.exe	86
PID 2668 wrote to memory of 4672	2668	idcmzqwgl.exe	87

C:\Users\Admin\AppData\Local\Temp\2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\idcmzqwgl.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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:3884
- - \??\c:\idcmzqwgl.exe
    c:\idcmzqwgl.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-31_ab960a2aa5394f15e6fc50909154f4fd_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2668
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\dtzunedfj\iqzlrks.dll",AbortProc c:\idcmzqwgl.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
      Suspicious use of AdjustPrivilegeToken
      PID:4672
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4672 -s 1552
        5⤵
        Program crash
        
        PID:3840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4672 -ip 4672
1⤵
PID:4748

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

Loading Replay Monitor...

Downloads

idcmzqwgl.exe

Path C:\idcmzqwgl.exe
Size 158KB
SHA256 fbb965b9aa1cf44f808314c519aea87849e37ae96d1f954742f2384792c4150f
MD5 efb000fda3c38c9f3d18c4759a115e29
SHA1 2307fa2d702a7440f2b56c6f0fd643ec34b0ec82
SHA512 8e32258f5cd350a540b4d8a8bd03431d2461950b333bc03fb96751ed5d9b7caedcfec30a28aff9b2fc4de7fce26feffc7e9c7961627a6c37622cca45ac314520
SSDEEP 1536:fli0XaKn5gYkqDqgEeEHgUyQLrdcUcsA08IzYJzKsoVXOeqD7hi/x0rTE86mwYU4:di0XaKncqY31L2WXb0E86mwYUiuc
TLSH
T1DCF37C26E7E58542E3B24F7046E35B63AE71FC145AED8B4F7B40A75E8838B00ED19364
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

iqzlrks.dll

Path \??\c:\dtzunedfj\iqzlrks.dll
Size 87KB
SHA256 37ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03
MD5 a2c2137ff7abf6be6bcae4252c394a69
SHA1 07b402104df563f9486c2eef975fee70f65a5145
SHA512 5d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9
SSDEEP 1536:Z9f99U7uHXjIdqsxng0ZsiG4gYV82mwx86aY1Enb0jv4WDBT:bfTVHXEdqRYu2mwxB11EbiT1
TLSH
T10B93E08EBFD80A7FC6BF123244A7D636D2723C117B199D5231DE8E1F38561096B0A768
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2556-3-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/2556-1-0x0000000000405000-0x0000000000406000-memory.dmp

Download

memory/2556-0-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/2668-7-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/2668-9-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/4672-12-0x0000000010000000-0x0000000010036000-memory.dmp

Download

memory/4672-14-0x0000000010000000-0x0000000010036000-memory.dmp

Download

memory/4672-15-0x0000000010000000-0x0000000010036000-memory.dmp

Download

memory/4672-13-0x0000000010000000-0x0000000010036000-memory.dmp

Download

memory/4672-16-0x0000000010000000-0x0000000010036000-memory.dmp

Download

memory/4672-18-0x0000000010000000-0x0000000010036000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads