farfli | 1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827

Analysis

max time kernel
150s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
20/08/2026, 09:30

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General

Target
1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe
Size 198KB
Sample260820-lgrzfstdpf
SHA256 1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827
MD5 be7f565822b1e52bf781e92c9996d529
SHA1 b8685335087ed5cb180135b0860766de8a5c393f
SHA512 ee30b9c12c5a4cc57412d9a0613f87ac43c987b857d4d2f68ef5f8b7b538d34f6067ed371f1e31a23dbc3d4825ca618aa7023f00b495a3344c9c5867108f5010
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
TLSH
T159141200DBA461E8D498607B0AC3B321FBF29ACDEB735BF152D6D13B9F51F162859890
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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 3 IoCs

resource	yara_rule
behavioral2/memory/3076-15-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3076-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3076-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
800	tmwau.exe

Executes dropped EXE 2 IoCs

pid	Process
800	tmwau.exe
3076	irk.exe

Loads dropped DLL 1 IoCs

pid	Process
3076	irk.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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\lapbir\\irk.exe \"c:\\Program Files\\lapbir\\irkim.dll\",Compliance"	irk.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)	\??\x:	irk.exe
File opened (read-only)	\??\z:	irk.exe
File opened (read-only)	\??\b:	irk.exe
File opened (read-only)	\??\d:	irk.exe
File opened (read-only)	\??\r:	irk.exe
File opened (read-only)	\??\s:	irk.exe
File opened (read-only)	\??\y:	irk.exe
File opened (read-only)	\??\g:	irk.exe
File opened (read-only)	\??\h:	irk.exe
File opened (read-only)	\??\i:	irk.exe
File opened (read-only)	\??\k:	irk.exe
File opened (read-only)	\??\m:	irk.exe
File opened (read-only)	\??\o:	irk.exe
File opened (read-only)	\??\t:	irk.exe
File opened (read-only)	\??\u:	irk.exe
File opened (read-only)	\??\a:	irk.exe
File opened (read-only)	\??\j:	irk.exe
File opened (read-only)	\??\l:	irk.exe
File opened (read-only)	\??\n:	irk.exe
File opened (read-only)	\??\v:	irk.exe
File opened (read-only)	\??\w:	irk.exe
File opened (read-only)	\??\p:	irk.exe
File opened (read-only)	\??\q:	irk.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	irk.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\lapbir\irkim.dll	tmwau.exe
File created	\??\c:\Program Files\lapbir\irk.exe	tmwau.exe
File opened for modification	\??\c:\Program Files\lapbir	tmwau.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
1840	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmwau.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	irk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
1840	cmd.exe
2920	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	irk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	irk.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2920	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3076	irk.exe
3076	irk.exe
3076	irk.exe
3076	irk.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3076	irk.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2884	1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe
800	tmwau.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 1840	2884	1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe	89
PID 1840 wrote to memory of 2920	1840	cmd.exe	91
PID 1840 wrote to memory of 800	1840	cmd.exe	92
PID 800 wrote to memory of 3076	800	tmwau.exe	93

C:\Users\Admin\AppData\Local\Temp\1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe
"C:\Users\Admin\AppData\Local\Temp\1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tmwau.exe "C:\Users\Admin\AppData\Local\Temp\1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.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:1840
- - 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:2920
- - C:\Users\Admin\AppData\Local\Temp\tmwau.exe
    C:\Users\Admin\AppData\Local\Temp\\tmwau.exe "C:\Users\Admin\AppData\Local\Temp\1012e5195d5ef600de5c36f356fd6081cdb1e0052a9ebabb8bdfec9e85d37827.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:800
  - - \??\c:\Program Files\lapbir\irk.exe
      "c:\Program Files\lapbir\irk.exe" "c:\Program Files\lapbir\irkim.dll",Compliance C:\Users\Admin\AppData\Local\Temp\tmwau.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:3076

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

irk.exe

Path C:\Program Files\lapbir\irk.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

tmwau.exe

Path C:\Users\Admin\AppData\Local\Temp\tmwau.exe
Size 198KB
SHA256 837cc02c75f0a2765eabbcfef4ad49ec95dfe09649977f364f3a855c76b2a2dd
MD5 e5c0e0559898bb30db58f4752aa2d677
SHA1 cfa1ef9cd90976ee6da6d8e9161b15d031a25377
SHA512 3f8f7bd5d11c25277a9179aeedb1bb5b208f5364bef26c27c2dbebd22455b6f6e42b174717b51e007842c924ea91e1a1dbf1aa334a8fe6c934373003bd4c367f
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTI:X2vnSwjaOcADw9cUeCOfm
TLSH
T1E8141200DBA465E8D498607B0AC3B321FBF29ACDEB735BF152D6D13B9F51F162859880
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

irkim.dll

Path \??\c:\Program Files\lapbir\irkim.dll
Size 141KB
SHA256 b0a06e2bc174146ae244b915490cd4398dd8d0ad7568f48cce88b14e8a2b6dfc
MD5 a5a3704fe657aa5916507a84490031da
SHA1 65d95c86eeecde99af612923966f747592b9a871
SHA512 5b3ac23d83821990270bad612c754bb79585f6ca889fa67f97aa164339a9693120dc6945b679f469f25ef239b9c0fcf009052fc72c64e1d7d7253b095919a95a
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4ls:RGMmfToTJY6zpSyvkGSn1tls
TLSH
T15CE312E0E3A7C4B6C265573187937DF3162CF4346B18072EED62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/800-7-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/800-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/800-11-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2884-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2884-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2884-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2884-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3076-14-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3076-15-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3076-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3076-22-0x0000000010000000-0x000000001004E000-memory.dmp

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