farfli | c70e9961855a640bbce3e31baade1d8f47dc8a0bba8ba46d5cdd02a798939865

General

Target
2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_elex_wannacry.exe
Size 246KB
Sample260629-d6h4vact31
SHA256 c70e9961855a640bbce3e31baade1d8f47dc8a0bba8ba46d5cdd02a798939865
MD5 b6ad4579458fbff8108ddbcfed80fcbe
SHA1 c8bcaa0231dd5fc664a17f2124949aef16e9b52c
SHA512 903d1000db92ef5f41ae890dd915bf5944f9d4e20af99a476c66fb660fb015d04eba47b04d7f1334ee0b1542c2db718247ef83358bf7b5ab61dce749cf413596
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLO9:9PwTNCl+zGp60C
TLSH
T163347C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F1394420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 4 IoCs

resource	yara_rule
behavioral2/memory/5052-7-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5052-8-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5052-10-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5052-13-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/5052-7-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5052-8-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5052-10-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5052-13-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/files/0x000600000001b866-1.dat	UPX
behavioral2/files/0x000d00000001c639-5.dat	UPX
behavioral2/memory/5052-7-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5052-8-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5052-10-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5052-13-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1656	wriaycb.exe

Executes dropped EXE 2 IoCs

pid	Process
1656	wriaycb.exe
5052	iyjjesvmo.exe

Loads dropped DLL 1 IoCs

pid	Process
5052	iyjjesvmo.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-1-5-21-2289519114-2956110270-1748446682-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\hiesw\\iyjjesvmo.exe \"c:\\Program Files\\hiesw\\iyjjesvmo.dll\",Group"	iyjjesvmo.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)	\??\b:	iyjjesvmo.exe
File opened (read-only)	\??\h:	iyjjesvmo.exe
File opened (read-only)	\??\j:	iyjjesvmo.exe
File opened (read-only)	\??\k:	iyjjesvmo.exe
File opened (read-only)	\??\q:	iyjjesvmo.exe
File opened (read-only)	\??\t:	iyjjesvmo.exe
File opened (read-only)	\??\v:	iyjjesvmo.exe
File opened (read-only)	\??\x:	iyjjesvmo.exe
File opened (read-only)	\??\i:	iyjjesvmo.exe
File opened (read-only)	\??\m:	iyjjesvmo.exe
File opened (read-only)	\??\n:	iyjjesvmo.exe
File opened (read-only)	\??\p:	iyjjesvmo.exe
File opened (read-only)	\??\r:	iyjjesvmo.exe
File opened (read-only)	\??\g:	iyjjesvmo.exe
File opened (read-only)	\??\w:	iyjjesvmo.exe
File opened (read-only)	\??\z:	iyjjesvmo.exe
File opened (read-only)	\??\a:	iyjjesvmo.exe
File opened (read-only)	\??\d:	iyjjesvmo.exe
File opened (read-only)	\??\l:	iyjjesvmo.exe
File opened (read-only)	\??\o:	iyjjesvmo.exe
File opened (read-only)	\??\s:	iyjjesvmo.exe
File opened (read-only)	\??\u:	iyjjesvmo.exe
File opened (read-only)	\??\y:	iyjjesvmo.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	iyjjesvmo.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d00000001c639-5.dat	upx
behavioral2/memory/5052-7-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5052-8-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5052-10-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5052-13-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\hiesw	wriaycb.exe
File created	\??\c:\Program Files\hiesw\iyjjesvmo.dll	wriaycb.exe
File created	\??\c:\Program Files\hiesw\iyjjesvmo.exe	wriaycb.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	2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_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	wriaycb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iyjjesvmo.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
1336	cmd.exe
6048	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	iyjjesvmo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	iyjjesvmo.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
6048	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5052	iyjjesvmo.exe
5052	iyjjesvmo.exe
5052	iyjjesvmo.exe
5052	iyjjesvmo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5052	iyjjesvmo.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2556	2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_elex_wannacry.exe
1656	wriaycb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 1336	2556	2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_elex_wannacry.exe	89
PID 1336 wrote to memory of 6048	1336	cmd.exe	91
PID 1336 wrote to memory of 1656	1336	cmd.exe	92
PID 1656 wrote to memory of 5052	1656	wriaycb.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_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:\Users\Admin\AppData\Local\Temp\\wriaycb.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1336
- - 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:6048
- - C:\Users\Admin\AppData\Local\Temp\wriaycb.exe
    C:\Users\Admin\AppData\Local\Temp\\wriaycb.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-27_b6ad4579458fbff8108ddbcfed80fcbe_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:1656
  - - \??\c:\Program Files\hiesw\iyjjesvmo.exe
      "c:\Program Files\hiesw\iyjjesvmo.exe" "c:\Program Files\hiesw\iyjjesvmo.dll",Group C:\Users\Admin\AppData\Local\Temp\wriaycb.exe
      4⤵
      Executes dropped EXE
      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:5052

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

iyjjesvmo.exe

Path C:\Program Files\hiesw\iyjjesvmo.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wriaycb.exe

Path C:\Users\Admin\AppData\Local\Temp\wriaycb.exe
Size 246KB
SHA256 a583b6a22b5449309cd17becb74975650d6740c4d3a53c3b51efee8fb4a2aece
MD5 f49fd55d698566a4fe24bc3fcd025d37
SHA1 7f70c996dfc530d40120f96caec2e47fe71f244c
SHA512 83c17a61c463bcc88c418f8ee50c26211b25c32aeaf61a29d9e95ce8876a0ece4a9f7588a7f3566f80770da63129f61cfb7b3a2fbaa10985c0c135b3bf3c2005
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLO5:9PwTNCl+zGp60i
TLSH
T1EB347C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F1394420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

iyjjesvmo.dll

Path \??\c:\Program Files\hiesw\iyjjesvmo.dll
Size 97KB
SHA256 2904c4d63fa30354a49d875b2084cab23eda7c089cf7837f3dd783bd5a5ea299
MD5 105c22dfb062dd62c8efdc563ec7edc0
SHA1 c9b180245dfb8956844b5709fbdb33ee2fa477a6
SHA512 23bdeac81b722e44ccff2fec3bc16f2280802167db31e77e3849611f6dd923b331955496939ebb47d6a05c0ce955b1669f3edd5b8b64214d2e13f0bd99a01101
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbGE:5pG6Sg9txRk/SS6bGE
TLSH
T134A301FA290D7DD6CB354839D6528E35FA29EE348C589F887ECE6C13ACB8510E1641F1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5052-7-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5052-8-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5052-10-0x0000000010000000-0x0000000010038000-memory.dmp

Download

memory/5052-13-0x0000000010000000-0x0000000010038000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads