farfli | 834d7648d29f9f2def98b7512e69afa00aaffe2ea053a82f8cc2872a37b2b124

General

Target
2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe
Size 364KB
Sample260523-t2k1msgv2w
SHA256 834d7648d29f9f2def98b7512e69afa00aaffe2ea053a82f8cc2872a37b2b124
MD5 b2c80528cdcf0e7ea8ed7a9c600784af
SHA1 318e2a61d4d07e84611e43e7d4d8dd0690638493
SHA512 ca13fe67fbcc2695c1a20a1b5b5b8ef3d0e97fe08b2b5f8e60a35dbce56d50e1ec644d6906f6981be25eacc2a92cc8a04d2d9ee022e39917994e73d7c41b3ed4
SSDEEP 6144:XO1ehJTKCz6udyYsf8Be8k/7g/Qnqj2aZQLdkm51bfWY627bCK64Nrr:GeHTp+o7Ve57g/VDZ6km51bfWYhC
TLSH
T14E84DF6275D7C8A2C5C67532CDA6E6B0E3E9CF58C871A97B07BC3ACC3E35500931A265
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 3 IoCs

resource	yara_rule
behavioral2/memory/3340-11-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli
behavioral2/memory/3340-9-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli
behavioral2/memory/3340-12-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3340-11-0x0000000010000000-0x0000000010086000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3340-9-0x0000000010000000-0x0000000010086000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3340-12-0x0000000010000000-0x0000000010086000-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	3340	rundll32.exe
2	3340	rundll32.exe
4	3340	rundll32.exe
5	3340	rundll32.exe
6	3340	rundll32.exe
7	3340	rundll32.exe
8	3340	rundll32.exe
12	3340	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5992	xexdd.exe

Executes dropped EXE 1 IoCs

pid	Process
5992	xexdd.exe

Loads dropped DLL 1 IoCs

pid	Process
3340	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-1-5-21-1768642833-2142038154-4041560723-1000\Software\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\qrajw\\icgie.dll\",method"	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)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\qrajw	xexdd.exe
File created	\??\c:\Program Files\qrajw\icgie.dll	xexdd.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xexdd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.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
3636	cmd.exe
5272	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
5272	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3340	rundll32.exe
3340	rundll32.exe
3340	rundll32.exe
3340	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3340	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5100	2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe
5992	xexdd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 3636	5100	2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe	80
PID 3636 wrote to memory of 5272	3636	cmd.exe	82
PID 3636 wrote to memory of 5992	3636	cmd.exe	83
PID 5992 wrote to memory of 3340	5992	xexdd.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xexdd.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3636
- - 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:5272
- - C:\Users\Admin\AppData\Local\Temp\xexdd.exe
    C:\Users\Admin\AppData\Local\Temp\\xexdd.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_b2c80528cdcf0e7ea8ed7a9c600784af_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:5992
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\qrajw\icgie.dll",method C:\Users\Admin\AppData\Local\Temp\xexdd.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:3340

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

xexdd.exe

Path C:\Users\Admin\AppData\Local\Temp\xexdd.exe
Size 365KB
SHA256 20849898974e2589dffffdda14b556f82a132cb82915215658d88542a107fdd0
MD5 ebe4799deca102384f90348c8c58f04d
SHA1 e3f1b4f8ff32096cba7419c2069db354370c7b79
SHA512 56a3989348228bcb1f91fde04a5c77e625bcc024cce736c2b15a3a5c211b7d2b5d23bc099c8fdff447c97fe904872f36fd7fe6efcb171dbebeb0f3f614a804b7
SSDEEP 6144:XO1ehJTKCz6udyYsf8Be8k/7g/Qnqj2aZQLdkm51bfWY627bCK64Nrr0:GeHTp+o7Ve57g/VDZ6km51bfWYhCd
TLSH
T1E384D06275D7C8A2C5C67532CDA6E6B0E3E9CF58C871AA7B07BC3ACC3E355009316265
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

icgie.dll

Path \??\c:\Program Files\qrajw\icgie.dll
Size 236KB
SHA256 9e275d5ab6e1d3978edd7d1d05ad8ad6a7fc9ce37ff238e0362e1e25bf6b80bf
MD5 2af916fdaa931f8f6e721e85ceb5aca8
SHA1 9fb4510dc8dc2644c8d6706a6397ed7915efd559
SHA512 d1636c1538d0517b4de2d248240c6f56e17ba89c68c184cc48ff973162c454b1668bc4f55ea4196c5abd11e58da4a652492268d2f55c6d4f42a3e76124769410
SSDEEP 6144:5AR605YiF3+ZSip01kUQ0dUxYPDTYlMYjHWUCI:52m83Fm01kbqPDU3j2UCI
TLSH
T1CB3412511AFC0CFAF4A39BB91C51944DB3304C113BAC5E9E998DAF0DA997848723E727
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3340-11-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/3340-9-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/3340-12-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/5100-0-0x0000000000400000-0x000000000045A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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