farfli | cccb0b640d766bdf3a9d9a96609a7a0244707494ea4fdb1cddfadd188243a125

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/07/2026, 03:59

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General

Target
2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe
Size 310KB
Sample260721-ej9hysfx3v
SHA256 cccb0b640d766bdf3a9d9a96609a7a0244707494ea4fdb1cddfadd188243a125
MD5 974ea7a424702e8d05d2f4d51bcce3ee
SHA1 8977ea2f11675da8e5a7b17701ca3a65a5a721da
SHA512 345d5732c494f49020beaa0810954ab84de4283e832a49864749eef083250c594e95bc4242b40f8e241f0545400c7edba473f45b36cd5f7ab725aa5083bf16db
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOk:ywLcCmuErglr73aAD+9
TLSH
T1B764F142D511CF47FC2FCAB6823E1E355317AE553B205693D3C8BA1F65B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 7 IoCs

resource	yara_rule
behavioral2/memory/3232-11-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-13-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3232-21-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/3232-11-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-13-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3232-21-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4112-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/4112-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x000b00000001b88f-3.dat	UPX
behavioral2/memory/5628-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
7	3232	rundll32.exe
9	3232	rundll32.exe
10	3232	rundll32.exe
11	3232	rundll32.exe
12	3232	rundll32.exe
14	3232	rundll32.exe
16	3232	rundll32.exe
17	3232	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5628	frphqs.exe

Executes dropped EXE 1 IoCs

pid	Process
5628	frphqs.exe

Loads dropped DLL 1 IoCs

pid	Process
3232	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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\rxdmmna\\saslu.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4112-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/4112-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x000b00000001b88f-3.dat	upx
behavioral2/memory/5628-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\rxdmmna	frphqs.exe
File created	\??\c:\Program Files\rxdmmna\saslu.dll	frphqs.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3244	cmd.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	2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	frphqs.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
3244	cmd.exe
3432	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
3432	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3232	rundll32.exe
3232	rundll32.exe
3232	rundll32.exe
3232	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3232	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4112	2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe
5628	frphqs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4112 wrote to memory of 3244	4112	2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe	89
PID 3244 wrote to memory of 3432	3244	cmd.exe	91
PID 3244 wrote to memory of 5628	3244	cmd.exe	92
PID 5628 wrote to memory of 3232	5628	frphqs.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4112
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\frphqs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3244
- - 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:3432
- - C:\Users\Admin\AppData\Local\Temp\frphqs.exe
    C:\Users\Admin\AppData\Local\Temp\\frphqs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-21_974ea7a424702e8d05d2f4d51bcce3ee_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:5628
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\rxdmmna\saslu.dll",GetProc C:\Users\Admin\AppData\Local\Temp\frphqs.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:3232

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

frphqs.exe

Path C:\Users\Admin\AppData\Local\Temp\frphqs.exe
Size 310KB
SHA256 52c8a05a3ce9f435a0d2005292fda7fd6ce5ee2afa4d89ea87a8464e57aaa181
MD5 183f50c6b8ca655d05974acdcbe64e0c
SHA1 621e949c8989bdc054889ed2e16dbff4e95c5763
SHA512 0784da1614473fe5b05968c5410d4099339a859cc111ef184227fab8ac81e25df881a6b0591b51474635452945fbb0703ea9af0f44063441fe3be68f5d51c84c
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOX:ywLcCmuErglr73aAD+o
TLSH
T1AE64F142D511CF47FC2FCAB6823E1E355317AE553B205693D3C8BA1F65B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

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saslu.dll

Path \??\c:\Program Files\rxdmmna\saslu.dll
Size 218KB
SHA256 99a592e2d8abec9083fd90609578caf469dbaa916d529fd42417a1165a592bd6
MD5 520b1dd168eb51af58f456b6f8e4b867
SHA1 026c0c6b7ae2c1341189ca7ffe32094301269247
SHA512 c71e4183f166f2febdd157358c91cd334a75526a0ef88fbfcbc2b790706953d771852d2076b607daf75729013dc637ae3bcdf8622c845c0937624c8c62119149
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauyty:pnNwDTi3swddDiROXII
TLSH
T11E24128BCF983873C5223379597911A0B9725290AFA1530DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3232-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-10-0x0000000002790000-0x0000000002791000-memory.dmp

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memory/3232-11-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-13-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-16-0x0000000002790000-0x0000000002791000-memory.dmp

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memory/3232-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3232-21-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4112-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4112-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/5628-6-0x0000000000400000-0x0000000000483000-memory.dmp

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