farfli | 58c5b1cdaba6c27143a4c64b01c865919543fc3d325cf1e33011c3a44eec0b3e

Analysis

max time kernel
148s
max time network
140s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/08/2026, 06:40

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General

Target
2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_coinminer_elex_wannacry.exe
Size 236KB
Sample260809-hfd5essejg
SHA256 58c5b1cdaba6c27143a4c64b01c865919543fc3d325cf1e33011c3a44eec0b3e
MD5 88f86a97918c295e3ca9d0b2c45f6065
SHA1 0510f993905a5ed10e0ed3049370f586d97cf5cf
SHA512 595d88f635ed22c9df754c187a842fec43d66d8b8a391f50f8b6dbb622d72756044f356e0fe86dc706d8e2aa697153f7a8e20003ac5ce76de6839e25804f965a
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T16334F18136A5CD77F0221B7D4D7B163A8537BE691B00B49BD3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

98.126.40.18:3204
http://98.126.40.19:805/index.php
http://98.126.40.20:803/

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 2 IoCs

resource	yara_rule
behavioral2/memory/2528-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/2528-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2528-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2528-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1656-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/1656-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000f000000016cb6-3.dat	UPX
behavioral2/memory/3492-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
3492	ifyryk.exe

Executes dropped EXE 2 IoCs

pid	Process
3492	ifyryk.exe
2528	yryqmb.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	yryqmb.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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\ikmdvy\\yryqmb.exe \"c:\\Program Files\\ikmdvy\\geeig.dll\",Interface"	yryqmb.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)	\??\d:	yryqmb.exe
File opened (read-only)	\??\h:	yryqmb.exe
File opened (read-only)	\??\k:	yryqmb.exe
File opened (read-only)	\??\l:	yryqmb.exe
File opened (read-only)	\??\m:	yryqmb.exe
File opened (read-only)	\??\p:	yryqmb.exe
File opened (read-only)	\??\q:	yryqmb.exe
File opened (read-only)	\??\r:	yryqmb.exe
File opened (read-only)	\??\i:	yryqmb.exe
File opened (read-only)	\??\s:	yryqmb.exe
File opened (read-only)	\??\t:	yryqmb.exe
File opened (read-only)	\??\u:	yryqmb.exe
File opened (read-only)	\??\v:	yryqmb.exe
File opened (read-only)	\??\w:	yryqmb.exe
File opened (read-only)	\??\y:	yryqmb.exe
File opened (read-only)	\??\b:	yryqmb.exe
File opened (read-only)	\??\g:	yryqmb.exe
File opened (read-only)	\??\a:	yryqmb.exe
File opened (read-only)	\??\j:	yryqmb.exe
File opened (read-only)	\??\n:	yryqmb.exe
File opened (read-only)	\??\o:	yryqmb.exe
File opened (read-only)	\??\x:	yryqmb.exe
File opened (read-only)	\??\z:	yryqmb.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	yryqmb.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ikmdvy\geeig.dll	ifyryk.exe
File created	\??\c:\Program Files\ikmdvy\yryqmb.exe	ifyryk.exe
File opened for modification	\??\c:\Program Files\ikmdvy	ifyryk.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
2984	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	yryqmb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_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	ifyryk.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
4968	PING.EXE
2984	cmd.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	yryqmb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	yryqmb.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4968	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2528	yryqmb.exe
2528	yryqmb.exe
2528	yryqmb.exe
2528	yryqmb.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	yryqmb.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1656	2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_coinminer_elex_wannacry.exe
3492	ifyryk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2984	1656	2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_coinminer_elex_wannacry.exe	91
PID 2984 wrote to memory of 4968	2984	cmd.exe	93
PID 2984 wrote to memory of 3492	2984	cmd.exe	94
PID 3492 wrote to memory of 2528	3492	ifyryk.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ifyryk.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_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:2984
- - 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:4968
- - C:\Users\Admin\AppData\Local\Temp\ifyryk.exe
    C:\Users\Admin\AppData\Local\Temp\\ifyryk.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_88f86a97918c295e3ca9d0b2c45f6065_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:3492
  - - \??\c:\Program Files\ikmdvy\yryqmb.exe
      "c:\Program Files\ikmdvy\yryqmb.exe" "c:\Program Files\ikmdvy\geeig.dll",Interface C:\Users\Admin\AppData\Local\Temp\ifyryk.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:2528

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

yryqmb.exe

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

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ifyryk.exe

Path C:\Users\Admin\AppData\Local\Temp\ifyryk.exe
Size 236KB
SHA256 89b5e856e7d5d85b79f977165c8ab895719070512c3cc12c43b4353caff68c7f
MD5 46c68c3130515aa0a27c684b16956dc8
SHA1 c9990892e1094ff400ac1d89f0619b8c34a4bb06
SHA512 acfd2c1db81f5546ef07b184b6d7c645339a4c5c3fa57ede003075b744dfdaac95bcccf9a27ed0d5577efc6d85357cd875276e2b341ba07a0ac72fcf86f19b63
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocm:tgmYA/nsYf8QdsINkZ6CQetFs
TLSH
T13934F18136A5CD77F0221BBD4D7B163A8536BE691B00B497D3C4ED4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

geeig.dll

Path \??\c:\Program Files\ikmdvy\geeig.dll
Size 168KB
SHA256 d8417cf077e9e14e6f8aca410aaf0250da315bc49f168f75a29989f2ab52ff7e
MD5 6c932cac40ed88e899dc24978af66e6f
SHA1 f929e1b6cae5a2d5cd6610baf522ca6975d940a9
SHA512 537ca7d721abb373eb1794908b78221473a4fc1e57788d553f8f7c6baec6965f1adcef58a2f0895eb8c906f8ad5a5cbf88f37fc28578e5c5d431ff86a193185d
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMS:SJ8T1xE3ocg9f2nfLnwYsxf2Z1
TLSH
T13EF312D3EFB649E0C4361BB07C53C10FB8620C6498725B5543D9BEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1656-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1656-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2528-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2528-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2528-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/3492-7-0x0000000000400000-0x0000000000468000-memory.dmp

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