farfli | 874acc16f365a2209b53a213508951922cc04f096dc54ab34abcd78a6165e699

General

Target
2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_coinminer_elex_wannacry.exe
Size 250KB
Sample261110-bmdnxaca36
SHA256 874acc16f365a2209b53a213508951922cc04f096dc54ab34abcd78a6165e699
MD5 fd2be6a792716b3dfc2eac6680bc1c7f
SHA1 6837f1004099001a9a536a8c43c207b9a2b02ad5
SHA512 c0695b8dc2596daa231615798f4cffdb1b8c7a6c4d5b7795b33566f17cfce02e86adbfa9c975d7b5d75e4550cb9b924aabd07c5e41db598ccb56411445741e2b
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLO4:9PwTNCl+zGp60B
TLSH
T13B448C1233E84869E5EA3E32CEB6A630D7FAE9759C33D66F13D4420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion 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 4 IoCs

resource	yara_rule
behavioral2/memory/4072-11-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4072-12-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4072-14-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4072-17-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/4072-11-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4072-12-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4072-14-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4072-17-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/files/0x000d000000019cb7-1.dat	UPX
behavioral2/files/0x000300000001a331-8.dat	UPX
behavioral2/memory/4072-11-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4072-12-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4072-14-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4072-17-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
4048	dizpg.exe

Executes dropped EXE 2 IoCs

pid	Process
4048	dizpg.exe
4072	cklbxw.exe

Loads dropped DLL 1 IoCs

pid	Process
4072	cklbxw.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-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\upgtvevve\\cklbxw.exe \"c:\\Program Files\\upgtvevve\\cklbxw.dll\",Group"	cklbxw.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)	\??\s:	cklbxw.exe
File opened (read-only)	\??\x:	cklbxw.exe
File opened (read-only)	\??\y:	cklbxw.exe
File opened (read-only)	\??\k:	cklbxw.exe
File opened (read-only)	\??\t:	cklbxw.exe
File opened (read-only)	\??\u:	cklbxw.exe
File opened (read-only)	\??\o:	cklbxw.exe
File opened (read-only)	\??\p:	cklbxw.exe
File opened (read-only)	\??\g:	cklbxw.exe
File opened (read-only)	\??\h:	cklbxw.exe
File opened (read-only)	\??\i:	cklbxw.exe
File opened (read-only)	\??\m:	cklbxw.exe
File opened (read-only)	\??\n:	cklbxw.exe
File opened (read-only)	\??\v:	cklbxw.exe
File opened (read-only)	\??\a:	cklbxw.exe
File opened (read-only)	\??\b:	cklbxw.exe
File opened (read-only)	\??\q:	cklbxw.exe
File opened (read-only)	\??\w:	cklbxw.exe
File opened (read-only)	\??\z:	cklbxw.exe
File opened (read-only)	\??\d:	cklbxw.exe
File opened (read-only)	\??\j:	cklbxw.exe
File opened (read-only)	\??\l:	cklbxw.exe
File opened (read-only)	\??\r:	cklbxw.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	cklbxw.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000300000001a331-8.dat	upx
behavioral2/memory/4072-11-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4072-12-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4072-14-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4072-17-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\upgtvevve	dizpg.exe
File created	\??\c:\Program Files\upgtvevve\cklbxw.dll	dizpg.exe
File created	\??\c:\Program Files\upgtvevve\cklbxw.exe	dizpg.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
3220	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	cklbxw.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	cklbxw.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	cklbxw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_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	dizpg.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
3220	cmd.exe
4008	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	cklbxw.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	cklbxw.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4008	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4072	cklbxw.exe
4072	cklbxw.exe
4072	cklbxw.exe
4072	cklbxw.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4072	cklbxw.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4288	2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_coinminer_elex_wannacry.exe
4048	dizpg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4288 wrote to memory of 3220	4288	2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_coinminer_elex_wannacry.exe	88
PID 3220 wrote to memory of 4008	3220	cmd.exe	90
PID 3220 wrote to memory of 4048	3220	cmd.exe	91
PID 4048 wrote to memory of 4072	4048	dizpg.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dizpg.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_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:3220
- - 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:4008
- - C:\Users\Admin\AppData\Local\Temp\dizpg.exe
    C:\Users\Admin\AppData\Local\Temp\\dizpg.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_fd2be6a792716b3dfc2eac6680bc1c7f_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:4048
  - - \??\c:\Program Files\upgtvevve\cklbxw.exe
      "c:\Program Files\upgtvevve\cklbxw.exe" "c:\Program Files\upgtvevve\cklbxw.dll",Group C:\Users\Admin\AppData\Local\Temp\dizpg.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:4072

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Pre-OS Boot

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

2

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

cklbxw.exe

Path C:\Program Files\upgtvevve\cklbxw.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

dizpg.exe

Path C:\Users\Admin\AppData\Local\Temp\dizpg.exe
Size 250KB
SHA256 4cdadcd680be9ce63395770f5c5c7905fe579ad475f99239df171ae425e04fc3
MD5 71710e8ba9ebe95cd2700f580e1e8ef4
SHA1 fa6697ad0ecfc32e62c0c2448b64385a922ffa62
SHA512 300bb079abc6463db3f1fe4918e87224b990bca8b80dd61e16d6cfe6a580d53d61719b8e153da0b79096a15bf1e531bab981d4a3b06d0c221c637c581ff969a0
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLO1:9PwTNCl+zGp60s
TLSH
T1FA448C1233E84869E5EA3E32CEB6A630D7FAE9759C33D66F13D4420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cklbxw.dll

Path \??\c:\Program Files\upgtvevve\cklbxw.dll
Size 97KB
SHA256 2cc0f6ff3a16155dbeedde1c7807b938499aec15195ca38c7ebda1f1ebef6cf5
MD5 dde1700dfb0042d06472b4ee0c7b3c1a
SHA1 aeff8401da8a58e13042352f76f2351186b0cc58
SHA512 c3495b91939904f36fc4ddca40dcda25f2fce71132447bf618bde0f209d5627cf68039a2ec244e2f85eb229d8f0c838964962005dceefd68a902cbfb56d61dac
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbG2:5pG6Sg9txRk/SS6bG2
TLSH
T16BA301F6290D7DD6CB39483AD6528E35F629EE348C589F887ECE7C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4072-11-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4072-12-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4072-14-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4072-17-0x0000000010000000-0x0000000010038000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads