farfli | 8d15d6808e2bc10b794700631283ad07c852d4303f2544f466f06cd71275c196

Analysis

max time kernel
149s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/06/2026, 03:43

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General

Target
2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe
Size 222KB
Sample260602-eaexzsev9j
SHA256 8d15d6808e2bc10b794700631283ad07c852d4303f2544f466f06cd71275c196
MD5 755601f044f9381bd068eb2dce1e3973
SHA1 ed8f889f217d6fbc1021247dda5143aac2a11d4c
SHA512 9cb87881e0a54a1c3ba8db219d6855e7ac3c70fe983b14f7576f9aebb26986714ccb9a1d5c83e8dcc81e9683ea939fd52b14e688aff69bf579d76566802f1857
SSDEEP 6144:LMPTxAnyi9awI2WXyZPbwdpLr7FQXSzK:4PTPjnCCdpO
TLSH
T1D724E011D6D2C1D9D07247F68E3BC539CC1AAE261F0865C332563B6AA475EE0AF7102F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor bootkit discovery farfli persistence spyware stealer vmprotect

Malware Config

Signatures

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

Detects Farfli Backdoor 5 IoCs

resource	yara_rule
behavioral2/memory/2352-12-0x0000000010000000-0x0000000010037000-memory.dmp	family_farfli
behavioral2/memory/2352-11-0x0000000010000000-0x0000000010037000-memory.dmp	family_farfli
behavioral2/memory/2352-13-0x0000000010000000-0x0000000010037000-memory.dmp	family_farfli
behavioral2/memory/2352-15-0x0000000010000000-0x0000000010037000-memory.dmp	family_farfli
behavioral2/memory/2352-16-0x0000000010000000-0x0000000010037000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/2352-12-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2352-11-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2352-13-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2352-15-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2352-16-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

Detects executables packed with VMProtect. 11 IoCs

resource	yara_rule
behavioral2/memory/4388-0-0x0000000000400000-0x0000000000432000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4388-2-0x0000000000400000-0x0000000000432000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/files/0x002b00000002b224-4.dat	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/1492-7-0x0000000000400000-0x0000000000432000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/files/0x001a00000002b554-8.dat	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-10-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-12-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-11-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-13-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-15-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2352-16-0x0000000010000000-0x0000000010037000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	2352	rundll32.exe
3	2352	rundll32.exe
4	2352	rundll32.exe
5	2352	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x001a00000002b554-8.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
1492	qfkuewd.exe

Executes dropped EXE 1 IoCs

pid	Process
1492	qfkuewd.exe

Loads dropped DLL 1 IoCs

pid	Process
2352	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

VMProtect packed file 7 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/files/0x001a00000002b554-8.dat	vmprotect
behavioral2/memory/2352-10-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect
behavioral2/memory/2352-12-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect
behavioral2/memory/2352-11-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect
behavioral2/memory/2352-13-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect
behavioral2/memory/2352-15-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect
behavioral2/memory/2352-16-0x0000000010000000-0x0000000010037000-memory.dmp	vmprotect

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:\\ypscjfs\\olxot.loo\",Exit"	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	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	2026-06-02_755601f044f9381bd068eb2dce1e3973_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	qfkuewd.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
3340	cmd.exe
400	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
400	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe
2352	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4388	2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe
1492	qfkuewd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 3340	4388	2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe	82
PID 3340 wrote to memory of 400	3340	cmd.exe	84
PID 3340 wrote to memory of 1492	3340	cmd.exe	85
PID 1492 wrote to memory of 2352	1492	qfkuewd.exe	86

C:\Users\Admin\AppData\Local\Temp\2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qfkuewd.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3340
- - 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:400
- - C:\Users\Admin\AppData\Local\Temp\qfkuewd.exe
    C:\Users\Admin\AppData\Local\Temp\\qfkuewd.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-02_755601f044f9381bd068eb2dce1e3973_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1492
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ypscjfs\olxot.loo",Exit C:\Users\Admin\AppData\Local\Temp\qfkuewd.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:2352

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

qfkuewd.exe

Path C:\Users\Admin\AppData\Local\Temp\qfkuewd.exe
Size 223KB
SHA256 99b32f4a2f79288b6f291cce2f6b489b097bb81adaa6787c2f6b742f66ca1592
MD5 0de8423e37cdb64146bdb1be6e577fbe
SHA1 215ff885e4eef915827c29edc080b8f5a9f2d15d
SHA512 159915ca273853e63c30a6caa22a87e254c4893ee2a6a22caa882b316ca0142fd4fbac92b6124ef6470607c14ce9e060e70aae93b15817e1d17dc279b4a2d77a
SSDEEP 6144:LMPTxAnyi9awI2WXyZPbwdpLr7FQXSzKU:4PTPjnCCdpOi
TLSH
T10F24E010D692C1D9D07247F68E3BC539CC1AAE261F0865C333567B6AA875EE0AF7112F
MD5 SHA1 SHA512 SSDEEP TLSH

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olxot.loo

Path \??\c:\ypscjfs\olxot.loo
Size 128KB
SHA256 8fe1d9492012107c64090e2bbed51ca84f46f0828bd95b18326f776e694e3bcb
MD5 64597ebd5759f1c96d9c89ba91e6b9ae
SHA1 22b5c32c02e7d98384b5d364d4e88805a988e58a
SHA512 88cf508773b316acafafc5882dd6a50f895a4f444cfa0ef25781c0c5bbd8eba69e38b777460e66ee2cb25e6c61b699b0120788e00b2a0018bc02d07d644d076f
SSDEEP 3072:zjxNhLqeuecFnbG2BSyxqmImnttHdJOrGdnyANCfIc4wL:3xNhPlEnq2BSy4/mnTHdJOrg18l
TLSH
T1B9D301153654C57FC4FB5231C4A9DA3A8B723CA7E1264A8A71DC8E6F3D5900D8F423AC
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1492-7-0x0000000000400000-0x0000000000432000-memory.dmp

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memory/2352-10-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/2352-12-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/2352-11-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/2352-13-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/2352-15-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/2352-16-0x0000000010000000-0x0000000010037000-memory.dmp

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memory/4388-0-0x0000000000400000-0x0000000000432000-memory.dmp

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memory/4388-2-0x0000000000400000-0x0000000000432000-memory.dmp

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