37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/11/2024, 06:56

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General

Target
37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe
Size 200KB
Sample241110-hqf2rsscle
SHA256 37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367
MD5 6b3fd571f7102703e8bf3e8fc7351ec5
SHA1 2bc35373ad5cb2d0884c5d48d0930f5c86d902c7
SHA512 c4338e57ff5f7eb310e6cd04735d8aee6a4dda09faf173830359da6980b176a3a7e57a64622676b30587d0a2ad6609aaf3fca3c48b1667f20a83ec34b597d15d
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
1380	admlv.exe

Executes dropped EXE 2 IoCs

pid	Process
1380	admlv.exe
3620	mkqtssbi.exe

Loads dropped DLL 1 IoCs

pid	Process
3620	mkqtssbi.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\jvvnesjlr\\mkqtssbi.exe \"c:\\Program Files\\jvvnesjlr\\mkqtssbi.dll\",Compliance"	mkqtssbi.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)	\??\y:	mkqtssbi.exe
File opened (read-only)	\??\b:	mkqtssbi.exe
File opened (read-only)	\??\r:	mkqtssbi.exe
File opened (read-only)	\??\n:	mkqtssbi.exe
File opened (read-only)	\??\u:	mkqtssbi.exe
File opened (read-only)	\??\w:	mkqtssbi.exe
File opened (read-only)	\??\z:	mkqtssbi.exe
File opened (read-only)	\??\i:	mkqtssbi.exe
File opened (read-only)	\??\m:	mkqtssbi.exe
File opened (read-only)	\??\j:	mkqtssbi.exe
File opened (read-only)	\??\k:	mkqtssbi.exe
File opened (read-only)	\??\o:	mkqtssbi.exe
File opened (read-only)	\??\p:	mkqtssbi.exe
File opened (read-only)	\??\s:	mkqtssbi.exe
File opened (read-only)	\??\e:	mkqtssbi.exe
File opened (read-only)	\??\h:	mkqtssbi.exe
File opened (read-only)	\??\l:	mkqtssbi.exe
File opened (read-only)	\??\q:	mkqtssbi.exe
File opened (read-only)	\??\t:	mkqtssbi.exe
File opened (read-only)	\??\v:	mkqtssbi.exe
File opened (read-only)	\??\x:	mkqtssbi.exe
File opened (read-only)	\??\a:	mkqtssbi.exe
File opened (read-only)	\??\g:	mkqtssbi.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	mkqtssbi.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\jvvnesjlr	admlv.exe
File created	\??\c:\Program Files\jvvnesjlr\mkqtssbi.dll	admlv.exe
File created	\??\c:\Program Files\jvvnesjlr\mkqtssbi.exe	admlv.exe
File opened for modification	\??\c:\Program Files\jvvnesjlr\mkqtssbi.exe	admlv.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	admlv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mkqtssbi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
2816	cmd.exe
1920	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	mkqtssbi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mkqtssbi.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1920	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3620	mkqtssbi.exe
3620	mkqtssbi.exe
3620	mkqtssbi.exe
3620	mkqtssbi.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	mkqtssbi.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3420	37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe
1380	admlv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 2816	3420	37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe	87
PID 3420 wrote to memory of 2816	3420	37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe	87
PID 3420 wrote to memory of 2816	3420	37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe	87
PID 2816 wrote to memory of 1920	2816	cmd.exe	89
PID 2816 wrote to memory of 1920	2816	cmd.exe	89
PID 2816 wrote to memory of 1920	2816	cmd.exe	89
PID 2816 wrote to memory of 1380	2816	cmd.exe	91
PID 2816 wrote to memory of 1380	2816	cmd.exe	91
PID 2816 wrote to memory of 1380	2816	cmd.exe	91
PID 1380 wrote to memory of 3620	1380	admlv.exe	92
PID 1380 wrote to memory of 3620	1380	admlv.exe	92
PID 1380 wrote to memory of 3620	1380	admlv.exe	92

C:\Users\Admin\AppData\Local\Temp\37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe
"C:\Users\Admin\AppData\Local\Temp\37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\admlv.exe "C:\Users\Admin\AppData\Local\Temp\37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2816
- - 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:1920
- - C:\Users\Admin\AppData\Local\Temp\admlv.exe
    C:\Users\Admin\AppData\Local\Temp\\admlv.exe "C:\Users\Admin\AppData\Local\Temp\37b74466cc60151788acdf47661d7a4974672e93186bda1a1590ba7282c03367.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:1380
  - - \??\c:\Program Files\jvvnesjlr\mkqtssbi.exe
      "c:\Program Files\jvvnesjlr\mkqtssbi.exe" "c:\Program Files\jvvnesjlr\mkqtssbi.dll",Compliance C:\Users\Admin\AppData\Local\Temp\admlv.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:3620

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

mkqtssbi.exe

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

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admlv.exe

Path C:\Users\Admin\AppData\Local\Temp\admlv.exe
Size 200KB
SHA256 71b2f9d7bd652b3cc1a44a312e12a2e3825bf03d43c037d080260a07dd7c8fc0
MD5 77cb082d36bf82e93862bb9c3886fdfb
SHA1 c0d3fc4258aada9d7bba1479ce00adc1b51eb734
SHA512 1ec663246eb6f14d50287caa3c9b6782320ab61dc008d02fa11dbab6107b00a00c9102cf0daadd5bb6a6117877acfb1d7135f645ee20ec5d2d28c94c46152234
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTu:X2vnSwjaOcADw9cUeCOfY
MD5 SHA1 SHA512 SSDEEP

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mkqtssbi.dll

Path \??\c:\Program Files\jvvnesjlr\mkqtssbi.dll
Size 141KB
SHA256 b0745a93ef2169cb120b5e9a4e29fb078d275b92ff8777422eb0dffaa163cb8e
MD5 c6e091fcaad5aa3ee6a341706b1eb7f6
SHA1 4f2029835aa1dbe5fd55195f1e43a4ca2d0fac9b
SHA512 a0ec123d6a8126d9bacfeb506ad48bb164ba9590b95ca8e0725bea5dc308a0496c545f8e833c3997228505b609c4547912ffa5388bb185af62b0b529952cde9f
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lI:RGMmfToTJY6zpSyvkGSn1tlI
MD5 SHA1 SHA512 SSDEEP

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memory/1380-10-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1380-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1380-16-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3420-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3420-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3420-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3420-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3620-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3620-21-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3620-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3620-26-0x0000000010000000-0x000000001004E000-memory.dmp

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