farfli | c49ac40b2b2c0ac67af1886e81adef631385beafc609e9ce9b460174ccc9dda9

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
15/04/2026, 14:34

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General

Target
2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
Size 245KB
Sample260415-rxstkscs5s
SHA256 c49ac40b2b2c0ac67af1886e81adef631385beafc609e9ce9b460174ccc9dda9
MD5 1e9497102afc99a5f55533ae816d66af
SHA1 52c483bf4327f75c28457b4fef7c307a42ef8acf
SHA512 f42f03b40f964f02cdc55d9593b540371e86a8d925baa7a3984b2f3086a74912fc574c82bc0733428cbce0ba9327126808160dd31fafccf671a7b702ce0a57f3
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycY:qtatPE5Txvev1zQBgexOdw6rpI9Fsd9
TLSH
T11D348C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F0794420D4E36904CB15366
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 2 IoCs

resource	yara_rule
behavioral1/memory/5560-15-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral1/memory/5560-19-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/5560-15-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5560-19-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 8 IoCs

resource	yara_rule
behavioral1/memory/5424-0-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral1/memory/5424-2-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral1/files/0x000900000001e6ca-4.dat	UPX
behavioral1/memory/64-10-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral1/files/0x000c000000023759-11.dat	UPX
behavioral1/memory/5560-14-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral1/memory/5560-15-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral1/memory/5560-19-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
64	geblmsm.exe

Executes dropped EXE 2 IoCs

pid	Process
64	geblmsm.exe
5560	zzespo.exe

Loads dropped DLL 1 IoCs

pid	Process
5560	zzespo.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-1-5-21-721190819-434563495-2007910846-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\hirzboh\\zzespo.exe \"c:\\Program Files\\hirzboh\\zzespo.dll\",Group"	zzespo.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)	\??\l:	zzespo.exe
File opened (read-only)	\??\o:	zzespo.exe
File opened (read-only)	\??\p:	zzespo.exe
File opened (read-only)	\??\s:	zzespo.exe
File opened (read-only)	\??\t:	zzespo.exe
File opened (read-only)	\??\u:	zzespo.exe
File opened (read-only)	\??\a:	zzespo.exe
File opened (read-only)	\??\g:	zzespo.exe
File opened (read-only)	\??\h:	zzespo.exe
File opened (read-only)	\??\i:	zzespo.exe
File opened (read-only)	\??\m:	zzespo.exe
File opened (read-only)	\??\n:	zzespo.exe
File opened (read-only)	\??\r:	zzespo.exe
File opened (read-only)	\??\v:	zzespo.exe
File opened (read-only)	\??\w:	zzespo.exe
File opened (read-only)	\??\x:	zzespo.exe
File opened (read-only)	\??\y:	zzespo.exe
File opened (read-only)	\??\z:	zzespo.exe
File opened (read-only)	\??\b:	zzespo.exe
File opened (read-only)	\??\e:	zzespo.exe
File opened (read-only)	\??\j:	zzespo.exe
File opened (read-only)	\??\k:	zzespo.exe
File opened (read-only)	\??\q:	zzespo.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	zzespo.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c000000023759-11.dat	upx
behavioral1/memory/5560-14-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral1/memory/5560-15-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral1/memory/5560-19-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\hirzboh	geblmsm.exe
File created	\??\c:\Program Files\hirzboh\zzespo.dll	geblmsm.exe
File created	\??\c:\Program Files\hirzboh\zzespo.exe	geblmsm.exe
File opened for modification	\??\c:\Program Files\hirzboh\zzespo.exe	geblmsm.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	2026-04-15_1e9497102afc99a5f55533ae816d66af_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	geblmsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zzespo.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
868	cmd.exe
2720	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	zzespo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zzespo.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2720	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5560	zzespo.exe
5560	zzespo.exe
5560	zzespo.exe
5560	zzespo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5560	zzespo.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5424	2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
64	geblmsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5424 wrote to memory of 868	5424	2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe	86
PID 868 wrote to memory of 2720	868	cmd.exe	88
PID 868 wrote to memory of 64	868	cmd.exe	89
PID 64 wrote to memory of 5560	64	geblmsm.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5424
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\geblmsm.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:868
- - 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:2720
- - C:\Users\Admin\AppData\Local\Temp\geblmsm.exe
    C:\Users\Admin\AppData\Local\Temp\\geblmsm.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_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:64
  - - \??\c:\Program Files\hirzboh\zzespo.exe
      "c:\Program Files\hirzboh\zzespo.exe" "c:\Program Files\hirzboh\zzespo.dll",Group C:\Users\Admin\AppData\Local\Temp\geblmsm.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:5560

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Replay Monitor

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Downloads

zzespo.exe

Path C:\Program Files\hirzboh\zzespo.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

geblmsm.exe

Path C:\Users\Admin\AppData\Local\Temp\geblmsm.exe
Size 245KB
SHA256 1a5653014c4f1aaa637ea9aa1020f98ce70936483ff609f8a762a73864209071
MD5 77f9934dc9be5371cf417be2385807fb
SHA1 bc573f7b3a098535f8850addefdd002c9e33131c
SHA512 0f6f28cddf62b3f72a7687a517faaa6d587ca4232f653ec562766cc4e8cd99d6d70039d337023ca8cd985f60d83fe01f22ed23c0ad575234f7728939bc7ec03c
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycY:qtatPE5Txvev1zQBgexOdw6rpI9Fsd9p
TLSH
T137348C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F0794420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zzespo.dll

Path \??\c:\Program Files\hirzboh\zzespo.dll
Size 97KB
SHA256 b3101f3ba7f40127bd46c6743ace24da200ce6a7bc72a3d5c7b6bd2b0271d699
MD5 7b1fbdf850a955570f16754cb0aaa3c0
SHA1 270a59aa9be5d5f4b4690d53c284116bfb99e2f6
SHA512 ccf28db6c0b5daae67c3745265b80b51b098d365a066b0038bffd99ecd35d46f3a6a4e63da418be5116e79b9f444add4308bb8e8577295ef716de3d4b5b0c678
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbGR:5pG6Sg9txRk/SS6bGR
TLSH
T1D8A301FA290D7DD6CB354839D6528E35FA29EE348C589F887ECE6C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/64-10-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/5424-0-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/5424-2-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/5560-14-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5560-15-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5560-19-0x0000000010000000-0x0000000010038000-memory.dmp

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