farfli | 2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 07:23

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General

Target
2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.exe
Size 230KB
Sample261014-h8bj1a1thy
SHA256 2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642
MD5 d00c8ad782dce96029bdd07e57c6e8a9
SHA1 d1557ffaa1e45ad7177c296ec4809dd449348a31
SHA512 f71df72c7166b4f0a2fd477b07aa502a1040318198276f0f35c7d7960489036de3c775158ea5678c107550147bd764f067830f365916a0d1cb8e286d1f8a9566
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf
TLSH
T1DF340200DBB2E5E8D448247A07879310EBF1DDDE7B73677143D5E22FAB41F1AA4AA190
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

107.163.241.193:6520
http://107.163.241.181:16300/
http://107.163.241.182:12354/login.php

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 4 IoCs

resource	yara_rule
behavioral2/memory/3528-14-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3528-15-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3528-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3528-20-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
4616	zumps.exe

Executes dropped EXE 2 IoCs

pid	Process
4616	zumps.exe
3528	kvn.exe

Loads dropped DLL 1 IoCs

pid	Process
3528	kvn.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-1-5-21-2304238888-3968896904-642854331-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\eznna\\kvn.exe \"c:\\Program Files\\eznna\\nimjrbmu.dll\",Compliance"	kvn.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)	\??\z:	kvn.exe
File opened (read-only)	\??\a:	kvn.exe
File opened (read-only)	\??\d:	kvn.exe
File opened (read-only)	\??\i:	kvn.exe
File opened (read-only)	\??\j:	kvn.exe
File opened (read-only)	\??\p:	kvn.exe
File opened (read-only)	\??\q:	kvn.exe
File opened (read-only)	\??\v:	kvn.exe
File opened (read-only)	\??\h:	kvn.exe
File opened (read-only)	\??\k:	kvn.exe
File opened (read-only)	\??\o:	kvn.exe
File opened (read-only)	\??\r:	kvn.exe
File opened (read-only)	\??\u:	kvn.exe
File opened (read-only)	\??\w:	kvn.exe
File opened (read-only)	\??\y:	kvn.exe
File opened (read-only)	\??\l:	kvn.exe
File opened (read-only)	\??\m:	kvn.exe
File opened (read-only)	\??\s:	kvn.exe
File opened (read-only)	\??\t:	kvn.exe
File opened (read-only)	\??\x:	kvn.exe
File opened (read-only)	\??\b:	kvn.exe
File opened (read-only)	\??\g:	kvn.exe
File opened (read-only)	\??\n:	kvn.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	kvn.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\eznna	zumps.exe
File created	\??\c:\Program Files\eznna\nimjrbmu.dll	zumps.exe
File created	\??\c:\Program Files\eznna\kvn.exe	zumps.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
4104	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	kvn.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	kvn.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	zumps.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.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
4104	cmd.exe
4872	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	kvn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kvn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4872	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3528	kvn.exe
3528	kvn.exe
3528	kvn.exe
3528	kvn.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3528	kvn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4228	2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.exe
4616	zumps.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4228 wrote to memory of 4104	4228	2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.exe	89
PID 4104 wrote to memory of 4872	4104	cmd.exe	91
PID 4104 wrote to memory of 4616	4104	cmd.exe	92
PID 4616 wrote to memory of 3528	4616	zumps.exe	93

C:\Users\Admin\AppData\Local\Temp\2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.exe
"C:\Users\Admin\AppData\Local\Temp\2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4228
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zumps.exe "C:\Users\Admin\AppData\Local\Temp\2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.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:4104
- - 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:4872
- - C:\Users\Admin\AppData\Local\Temp\zumps.exe
    C:\Users\Admin\AppData\Local\Temp\\zumps.exe "C:\Users\Admin\AppData\Local\Temp\2b3bdca877d4ab7ad77928c91c13b57e3f8247104beaa77146e0e761db2e4642.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:4616
  - - \??\c:\Program Files\eznna\kvn.exe
      "c:\Program Files\eznna\kvn.exe" "c:\Program Files\eznna\nimjrbmu.dll",Compliance C:\Users\Admin\AppData\Local\Temp\zumps.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3528

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

Indicator Removal

T1070

File Deletion

T1070.004

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

kvn.exe

Path C:\Program Files\eznna\kvn.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

zumps.exe

Path C:\Users\Admin\AppData\Local\Temp\zumps.exe
Size 231KB
SHA256 eeb6b0ea1869b9fb1a82fc3b586ae1e3cb785ea1cad9c5acb1c26472f481399a
MD5 0f7dae753824062fed532a060785cb6c
SHA1 8180f09f0089442abfbffb87c885624af25dde2f
SHA512 b9bb01e37faced54dd4ab59bd96eada9396f12002443b69a36ee426f17f84adaea67019881e7fdbe495b9583189fe9a56c6090d9e26437c90aa5699b290ffe1b
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf
TLSH
T14D340200DBB2E5E8D448247A07879310EBF1DDDE7B73677143D5E22FAB41F1AA4AA190
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

nimjrbmu.dll

Path \??\c:\Program Files\eznna\nimjrbmu.dll
Size 141KB
SHA256 05f41dfa242e959428cea09d988092387653da96c1f2463e9c069ae4f7499b01
MD5 21891decd40adc0b67ab9e39f7b5690a
SHA1 6c9770f6eee59e6666fafe6f39800d51f626f068
SHA512 594813880e048949229e61427af27c55e49f96a1723e3d8bad89c649bab20b26cf296cc330cb28d4c725113b8b76cc1bfbd6e2da7dd580b06bdee0ac8e650b74
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lQ:RGMmfToTJY6zpSyvkGSn1tlQ
TLSH
T123E312E0F377C4B6C2655B3183937DF3162CF5346B18072EED62A32769394C84A9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3528-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3528-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3528-15-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3528-14-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4228-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4228-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4228-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4228-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4616-11-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4616-7-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4616-8-0x0000000000400000-0x000000000044901D-memory.dmp

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