1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16/10/2024, 07:26

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General

Target
1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe
Size 200KB
Sample241016-h9xtmaygre
SHA256 1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa
MD5 9399e89fba20e77c27134c5b71f973d7
SHA1 d7a531758ebad78d4bbab21e26171d383b0fdf9c
SHA512 423ccafc9e4814c4a68e98f46200889681f7ae34f9b1330be7ac94697717104ecb5f6032fc12317d20fe5092862acc236bcdf3e13c0c5c4fb5abf4bea810a959
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1464	gntxo.exe

Executes dropped EXE 2 IoCs

pid	Process
1464	gntxo.exe
4600	fzz.exe

Loads dropped DLL 1 IoCs

pid	Process
4600	fzz.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\iazte\\fzz.exe \"c:\\Program Files\\iazte\\fzzks.dll\",Compliance"	fzz.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)	\??\k:	fzz.exe
File opened (read-only)	\??\l:	fzz.exe
File opened (read-only)	\??\m:	fzz.exe
File opened (read-only)	\??\o:	fzz.exe
File opened (read-only)	\??\u:	fzz.exe
File opened (read-only)	\??\w:	fzz.exe
File opened (read-only)	\??\a:	fzz.exe
File opened (read-only)	\??\i:	fzz.exe
File opened (read-only)	\??\x:	fzz.exe
File opened (read-only)	\??\t:	fzz.exe
File opened (read-only)	\??\e:	fzz.exe
File opened (read-only)	\??\p:	fzz.exe
File opened (read-only)	\??\n:	fzz.exe
File opened (read-only)	\??\q:	fzz.exe
File opened (read-only)	\??\r:	fzz.exe
File opened (read-only)	\??\s:	fzz.exe
File opened (read-only)	\??\v:	fzz.exe
File opened (read-only)	\??\y:	fzz.exe
File opened (read-only)	\??\h:	fzz.exe
File opened (read-only)	\??\j:	fzz.exe
File opened (read-only)	\??\z:	fzz.exe
File opened (read-only)	\??\b:	fzz.exe
File opened (read-only)	\??\g:	fzz.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	fzz.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\iazte	gntxo.exe
File created	\??\c:\Program Files\iazte\fzzks.dll	gntxo.exe
File created	\??\c:\Program Files\iazte\fzz.exe	gntxo.exe
File opened for modification	\??\c:\Program Files\iazte\fzz.exe	gntxo.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	1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.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	gntxo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fzz.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
2264	cmd.exe
2132	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	fzz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fzz.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2132	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4600	fzz.exe
4600	fzz.exe
4600	fzz.exe
4600	fzz.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4600	fzz.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2744	1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe
1464	gntxo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2264	2744	1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe	85
PID 2744 wrote to memory of 2264	2744	1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe	85
PID 2744 wrote to memory of 2264	2744	1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe	85
PID 2264 wrote to memory of 2132	2264	cmd.exe	88
PID 2264 wrote to memory of 2132	2264	cmd.exe	88
PID 2264 wrote to memory of 2132	2264	cmd.exe	88
PID 2264 wrote to memory of 1464	2264	cmd.exe	90
PID 2264 wrote to memory of 1464	2264	cmd.exe	90
PID 2264 wrote to memory of 1464	2264	cmd.exe	90
PID 1464 wrote to memory of 4600	1464	gntxo.exe	91
PID 1464 wrote to memory of 4600	1464	gntxo.exe	91
PID 1464 wrote to memory of 4600	1464	gntxo.exe	91

C:\Users\Admin\AppData\Local\Temp\1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe
"C:\Users\Admin\AppData\Local\Temp\1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gntxo.exe "C:\Users\Admin\AppData\Local\Temp\1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2264
- - 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:2132
- - C:\Users\Admin\AppData\Local\Temp\gntxo.exe
    C:\Users\Admin\AppData\Local\Temp\\gntxo.exe "C:\Users\Admin\AppData\Local\Temp\1384273a3b88067667cab0af1838a240e915cb75d45b546a41e131738aeb1baa.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:1464
  - - \??\c:\Program Files\iazte\fzz.exe
      "c:\Program Files\iazte\fzz.exe" "c:\Program Files\iazte\fzzks.dll",Compliance C:\Users\Admin\AppData\Local\Temp\gntxo.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:4600

Network

MITRE ATT&CK Enterprise v15

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

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Downloads

fzz.exe

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

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gntxo.exe

Path C:\Users\Admin\AppData\Local\Temp\gntxo.exe
Size 201KB
SHA256 574b80a927ca82b615c57df4bf7b78d906cbb84566bd1450d47fce2ba94ddcd6
MD5 1f6a6ff64e4533a2ba18fc35d23386cf
SHA1 14d79f131ccb01d82bbf2ecf80d143259203a9ec
SHA512 06133272172b3b66ef40b400f7f82e4a6cd8f02e1f45970b47676a6a19e688add7755593cececac6059ae05d128aef18102ae6635c65067f50bdc5bed07eb44e
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT+:X2vnSwjaOcADw9cUeCOfU
MD5 SHA1 SHA512 SSDEEP

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fzzks.dll

Path \??\c:\Program Files\iazte\fzzks.dll
Size 141KB
SHA256 17d6fb1d7e6abe486a6d1c5ab42373e166ec989f635b456632d6c0050b0edc3e
MD5 cbcfacc47717e36b6f0727d38ddf1f99
SHA1 8e17afacae3ca854ad30b249846268f48061a82d
SHA512 61352094e47b6133da3ae2a4abefe8fede6d48eeb27508938528d3ee35263369a45cd579cc9320ff70d4cf5ee50952b5c82c6ebfe1d883836f94006bc3ea6493
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lm:RGMmfToTJY6zpSyvkGSn1tlm
MD5 SHA1 SHA512 SSDEEP

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memory/1464-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1464-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1464-15-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2744-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2744-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2744-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2744-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4600-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4600-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4600-21-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4600-24-0x0000000010000000-0x000000001004E000-memory.dmp

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