c074614b6c4b9b8d57b7b3d1f9c6bc9ab1a863a82eaec8018ebbc2f668ba740c

Analysis

max time kernel
117s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11/11/2024, 02:50

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General

Target
cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe
Size 198KB
Sample241111-dblaqa1djp
SHA256 c074614b6c4b9b8d57b7b3d1f9c6bc9ab1a863a82eaec8018ebbc2f668ba740c
MD5 ed44493906874d89a7dd3011c170ff8e
SHA1 88d6f463784a13c9acb53dcfd22d3d4b61a191e6
SHA512 acda102822d94a6bd6a2dd033131e43d4b4120f45db1b10a28e096111e206cb4bc9d5d0dec0e137debb92a42a2f7f81579100eb0b48e5d65027d61259794aae9
SSDEEP 6144:nzsCZskoSfxsTxt3YeWH8k+p+Nj8DmX3+j9:zsCZsSGrYdcb88DlZ
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1268	sbcvtur.exe

Executes dropped EXE 2 IoCs

pid	Process
1268	sbcvtur.exe
4968	lcu.exe

Loads dropped DLL 1 IoCs

pid	Process
4968	lcu.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\flate = "c:\\Program Files\\bgebb\\lcu.exe \"c:\\Program Files\\bgebb\\lcuik.dll\",inflate"	lcu.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)	\??\b:	lcu.exe
File opened (read-only)	\??\k:	lcu.exe
File opened (read-only)	\??\t:	lcu.exe
File opened (read-only)	\??\y:	lcu.exe
File opened (read-only)	\??\r:	lcu.exe
File opened (read-only)	\??\w:	lcu.exe
File opened (read-only)	\??\a:	lcu.exe
File opened (read-only)	\??\g:	lcu.exe
File opened (read-only)	\??\h:	lcu.exe
File opened (read-only)	\??\j:	lcu.exe
File opened (read-only)	\??\v:	lcu.exe
File opened (read-only)	\??\z:	lcu.exe
File opened (read-only)	\??\e:	lcu.exe
File opened (read-only)	\??\o:	lcu.exe
File opened (read-only)	\??\q:	lcu.exe
File opened (read-only)	\??\s:	lcu.exe
File opened (read-only)	\??\p:	lcu.exe
File opened (read-only)	\??\u:	lcu.exe
File opened (read-only)	\??\x:	lcu.exe
File opened (read-only)	\??\i:	lcu.exe
File opened (read-only)	\??\l:	lcu.exe
File opened (read-only)	\??\m:	lcu.exe
File opened (read-only)	\??\n:	lcu.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	lcu.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4568-1-0x0000000000400000-0x000000000046D024-memory.dmp	upx
behavioral2/files/0x000c000000023b3e-3.dat	upx
behavioral2/files/0x0002000000022ab7-12.dat	upx
behavioral2/memory/4968-13-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/1268-9-0x0000000000400000-0x000000000046D024-memory.dmp	upx
behavioral2/memory/4968-14-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4968-16-0x0000000010000000-0x000000001004B000-memory.dmp	upx
behavioral2/memory/4968-18-0x0000000010000000-0x000000001004B000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bgebb\lcu.exe	sbcvtur.exe
File opened for modification	\??\c:\Program Files\bgebb	sbcvtur.exe
File created	\??\c:\Program Files\bgebb\lcuik.dll	sbcvtur.exe
File created	\??\c:\Program Files\bgebb\lcu.exe	sbcvtur.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	cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.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	sbcvtur.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lcu.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
4424	cmd.exe
864	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	lcu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	lcu.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
864	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4968	lcu.exe
4968	lcu.exe
4968	lcu.exe
4968	lcu.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	lcu.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4568	cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe
1268	sbcvtur.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4568 wrote to memory of 4424	4568	cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe	85
PID 4568 wrote to memory of 4424	4568	cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe	85
PID 4568 wrote to memory of 4424	4568	cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe	85
PID 4424 wrote to memory of 864	4424	cmd.exe	87
PID 4424 wrote to memory of 864	4424	cmd.exe	87
PID 4424 wrote to memory of 864	4424	cmd.exe	87
PID 4424 wrote to memory of 1268	4424	cmd.exe	89
PID 4424 wrote to memory of 1268	4424	cmd.exe	89
PID 4424 wrote to memory of 1268	4424	cmd.exe	89
PID 1268 wrote to memory of 4968	1268	sbcvtur.exe	91
PID 1268 wrote to memory of 4968	1268	sbcvtur.exe	91
PID 1268 wrote to memory of 4968	1268	sbcvtur.exe	91

C:\Users\Admin\AppData\Local\Temp\cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe
"C:\Users\Admin\AppData\Local\Temp\cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\sbcvtur.exe "C:\Users\Admin\AppData\Local\Temp\cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4424
- - 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:864
- - C:\Users\Admin\AppData\Local\Temp\sbcvtur.exe
    C:\Users\Admin\AppData\Local\Temp\\sbcvtur.exe "C:\Users\Admin\AppData\Local\Temp\cd8923ad6a90add8289ad126f42bea4a84e330d165ceb527e3d3a7c5735ca4faN.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:1268
  - - \??\c:\Program Files\bgebb\lcu.exe
      "c:\Program Files\bgebb\lcu.exe" "c:\Program Files\bgebb\lcuik.dll",inflate C:\Users\Admin\AppData\Local\Temp\sbcvtur.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:4968

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

Replay Monitor

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Downloads

lcu.exe

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

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lcuik.dll

Path C:\Program Files\bgebb\lcuik.dll
Size 134KB
SHA256 7fea15fabb5cd2f4aa4b36c0b322c28bcd299ba1112c8a91a08fc626e6f64f01
MD5 ad25c6165f44bcc34cab6e596d747f76
SHA1 4a836f6d0694ede0277e0506c483fe73ada3b15f
SHA512 c6ae7e26a3e091aaab6b91d389050bce7e2a3c0dd6994094c113659b3f5e560421a59c1b9950d0d3e8ef3b20179f5dc2b9e45db755c3f82482a42ff39a8836c3
SSDEEP 3072:Mz9IOfAdv1qacKNQTtP0KuYjbi7Gp0N9DLA:MzOOfAdv1XaPduYjbEfA
MD5 SHA1 SHA512 SSDEEP

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sbcvtur.exe

Path C:\Users\Admin\AppData\Local\Temp\sbcvtur.exe
Size 198KB
SHA256 6549a8cc619ad4be995e500241932392c59c1638c528422a72a22a1f012a3b37
MD5 f690940339bcbea9f3fb047f28f4ef94
SHA1 0ff2a644f6eb4d2a5bd70f46f0035cd0a969bea6
SHA512 192ca73bf4940aaa84ce6a973d8c9cb094e433dd58349633a982e135bbba5ea2063c6dfd5dce5cad28d107ef52a9a1c5d9020c733ed6c8ec971f4a1654039531
SSDEEP 6144:nzsCZskoSfxsTxt3YeWH8k+p+Nj8DmX3+jG:zsCZsSGrYdcb88Dl6
MD5 SHA1 SHA512 SSDEEP

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memory/1268-9-0x0000000000400000-0x000000000046D024-memory.dmp

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memory/4568-1-0x0000000000400000-0x000000000046D024-memory.dmp

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memory/4968-13-0x0000000010000000-0x000000001004B000-memory.dmp

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memory/4968-14-0x0000000010000000-0x000000001004B000-memory.dmp

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memory/4968-16-0x0000000010000000-0x000000001004B000-memory.dmp

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memory/4968-18-0x0000000010000000-0x000000001004B000-memory.dmp

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