101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9

Analysis

max time kernel
142s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 18:48

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General

Target

101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe
Size

74KB
MD5

97603d02d3cf4b6b98dc12c1da54d3ba
SHA1

48ddccdf864162a8bdec566c96a2925413e83266
SHA256

101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9
SHA512

89bf825c94fdfc197cccef041335d58bbf085a1882656121206b0fa9e2a664738468e16b7a282b776d9e790cdf0daefd68490dc93dfe136fc4cede82c766103f
SSDEEP

1536:6LxJJlguY/NbvWU2VkWlVvtlqDyKJR40AEEog:cc/R+U23vtlPR0pA

Score

9^/10

bootkit persistence spyware stealer upx

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/3116-15-0x0000000010000000-0x0000000010024000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3116-17-0x0000000010000000-0x0000000010024000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3116-19-0x0000000010000000-0x0000000010024000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3116-20-0x0000000010000000-0x0000000010024000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 8 IoCs

resource	yara_rule
behavioral2/memory/1460-7-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral2/memory/1460-11-0x0000000000400000-0x0000000000417000-memory.dmp	UPX
behavioral2/files/0x000400000002296c-12.dat	UPX
behavioral2/memory/3116-14-0x0000000010000000-0x0000000010024000-memory.dmp	UPX
behavioral2/memory/3116-15-0x0000000010000000-0x0000000010024000-memory.dmp	UPX
behavioral2/memory/3116-17-0x0000000010000000-0x0000000010024000-memory.dmp	UPX
behavioral2/memory/3116-19-0x0000000010000000-0x0000000010024000-memory.dmp	UPX
behavioral2/memory/3116-20-0x0000000010000000-0x0000000010024000-memory.dmp	UPX

Blocklisted process makes network request 8 IoCs

flow	pid	Process
23	3116	rundll32.exe
34	3116	rundll32.exe
35	3116	rundll32.exe
36	3116	rundll32.exe
47	3116	rundll32.exe
48	3116	rundll32.exe
57	3116	rundll32.exe
70	3116	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000400000002296c-12.dat	acprotect

Deletes itself 1 IoCs

pid	Process
1460	izllu.exe

Executes dropped EXE 1 IoCs

pid	Process
1460	izllu.exe

Loads dropped DLL 1 IoCs

pid	Process
3116	rundll32.exe

Reads user/profile data of web browsers 2 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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000400000002296c-12.dat	upx
behavioral2/memory/3116-14-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3116-15-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3116-17-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3116-19-0x0000000010000000-0x0000000010024000-memory.dmp	upx
behavioral2/memory/3116-20-0x0000000010000000-0x0000000010024000-memory.dmp	upx

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ekgdb\\vbpkk.dll\",init"	rundll32.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.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	rundll32.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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4480	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3116	rundll32.exe
3116	rundll32.exe
3116	rundll32.exe
3116	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3116	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3492	101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe
1460	izllu.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 4872	3492	101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe	82
PID 3492 wrote to memory of 4872	3492	101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe	82
PID 3492 wrote to memory of 4872	3492	101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe	82
PID 4872 wrote to memory of 4480	4872	cmd.exe	85
PID 4872 wrote to memory of 4480	4872	cmd.exe	85
PID 4872 wrote to memory of 4480	4872	cmd.exe	85
PID 4872 wrote to memory of 1460	4872	cmd.exe	88
PID 4872 wrote to memory of 1460	4872	cmd.exe	88
PID 4872 wrote to memory of 1460	4872	cmd.exe	88
PID 1460 wrote to memory of 3116	1460	izllu.exe	89
PID 1460 wrote to memory of 3116	1460	izllu.exe	89
PID 1460 wrote to memory of 3116	1460	izllu.exe	89

C:\Users\Admin\AppData\Local\Temp\101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe
"C:\Users\Admin\AppData\Local\Temp\101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\izllu.exe "C:\Users\Admin\AppData\Local\Temp\101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:4480
- - \??\c:\izllu.exe
    c:\izllu.exe "C:\Users\Admin\AppData\Local\Temp\101c584643000fd6297e44ae4146ae61519202a6d1995c34336932587891b7e9.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1460
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ekgdb\vbpkk.dll",init c:\izllu.exe
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3116

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\izllu.exe

Filesize
74KB

MD5
832d5c3bbfdc32e68d64c6ea09d1ee86

SHA1
1639c59647fda0d5763ede147d2238083d8d9075

SHA256
20de843206156b8b770f16c111291143f3535404aa10e552961ed54b7d102174

SHA512
7c457076dc1b8110b17d1594be6825d4346fed4e0c8631068039fb61658e3f04411f2911c4e9f502fbba47973b45e9bb0b4f4b19127e57635adc92ae8e25a987

Download Submit
\??\c:\ekgdb\vbpkk.dll

Filesize
46KB

MD5
42fe886bcb6460f7c2a46e21ecac5da6

SHA1
7d9a1c9fe17121cf61444da965f29e974a95ede2

SHA256
b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e

SHA512
3d1a7dc1d9ca8a4376302ba20df584ad59b98e0d3b18b06b22d7f5a455833ce124e412fc1922a3b704dcbafa31987cda3115c9a71dd6299683502cebae33567c

Download Submit
memory/1460-11-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1460-8-0x00000000008F0000-0x00000000008F2000-memory.dmp

Filesize
8KB

Download
memory/1460-7-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3116-14-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/3116-15-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/3116-17-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/3116-19-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/3116-20-0x0000000010000000-0x0000000010024000-memory.dmp

Filesize
144KB

Download
memory/3492-3-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3492-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3492-1-0x00000000005E0000-0x00000000005E2000-memory.dmp

Filesize
8KB

Download