eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b

Analysis

max time kernel
141s
max time network
142s
platform
windows11-21h2_x64
resource
win11-20250610-en
resource tags

arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
submitted
02/07/2025, 03:11

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General

Target
eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe
Size 76KB
Sample250702-dprpnasls4
SHA256 eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b
MD5 205dcf3af3858874ba1296363bc7897a
SHA1 d3a187c105ba6712301a752a4eecba75a5327073
SHA512 b86ccd92c109f7eded8ebfbaa6a657c5c6833aa958a357f74a51969c71f34e788584f205056b712a26c74ebed69cccdd4b01be539568a29b7c412ac669d17977
SSDEEP 1536:5L5lxcQxgr9BcXzfGQz0/m4QdQiWC378JztYtfBpf4p7WtX4w:blSQxgr9eXzd4/mxKIm+t3JIw
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

aspackv2 bootkit discovery persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 14 IoCs

flow	pid	Process
1	468	rundll32.exe
2	468	rundll32.exe
3	468	rundll32.exe
4	468	rundll32.exe
5	468	rundll32.exe
6	468	rundll32.exe
7	468	rundll32.exe
8	468	rundll32.exe
9	468	rundll32.exe
10	468	rundll32.exe
11	468	rundll32.exe
14	468	rundll32.exe
15	468	rundll32.exe
16	468	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000600000002a6d9-5.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
2544	asootej.exe

Executes dropped EXE 1 IoCs

pid	Process
2544	asootej.exe

Loads dropped DLL 2 IoCs

pid	Process
468	rundll32.exe
3776	rundll32.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-1-5-21-2238466657-712128251-1221219315-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\pplrn\\qougrvzf.dll\",GetWindowClass"	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)	\??\w:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 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
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asootej.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
6044	cmd.exe
4692	PING.EXE
3496	cmd.exe
4432	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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery

T1018

pid	Process
4692	PING.EXE
4432	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
468	rundll32.exe
468	rundll32.exe
468	rundll32.exe
468	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	468	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5240	eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe
2544	asootej.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5240 wrote to memory of 6044	5240	eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe	78
PID 5240 wrote to memory of 6044	5240	eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe	78
PID 5240 wrote to memory of 6044	5240	eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe	78
PID 6044 wrote to memory of 4692	6044	cmd.exe	80
PID 6044 wrote to memory of 4692	6044	cmd.exe	80
PID 6044 wrote to memory of 4692	6044	cmd.exe	80
PID 6044 wrote to memory of 2544	6044	cmd.exe	81
PID 6044 wrote to memory of 2544	6044	cmd.exe	81
PID 6044 wrote to memory of 2544	6044	cmd.exe	81
PID 2544 wrote to memory of 468	2544	asootej.exe	82
PID 2544 wrote to memory of 468	2544	asootej.exe	82
PID 2544 wrote to memory of 468	2544	asootej.exe	82
PID 5864 wrote to memory of 3776	5864	cmd.exe	85
PID 5864 wrote to memory of 3776	5864	cmd.exe	85
PID 5864 wrote to memory of 3776	5864	cmd.exe	85
PID 3776 wrote to memory of 3496	3776	rundll32.exe	86
PID 3776 wrote to memory of 3496	3776	rundll32.exe	86
PID 3776 wrote to memory of 3496	3776	rundll32.exe	86
PID 3496 wrote to memory of 4432	3496	cmd.exe	88
PID 3496 wrote to memory of 4432	3496	cmd.exe	88
PID 3496 wrote to memory of 4432	3496	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe
"C:\Users\Admin\AppData\Local\Temp\eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5240
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\asootej.exe "C:\Users\Admin\AppData\Local\Temp\eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:6044
- - 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:4692
- - \??\c:\asootej.exe
    c:\asootej.exe "C:\Users\Admin\AppData\Local\Temp\eb3db7c6787b75ebf9c21b3a2d4f78734b106087b62248c423ef2e059aef518b.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2544
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\pplrn\qougrvzf.dll",GetWindowClass c:\asootej.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)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:468

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c c:\windows\SysWOW64\rundll32.exe "c:\pplrn\qougrvzf.dll",GetWindowClass
1⤵
- Suspicious use of WriteProcessMemory
PID:5864
- \??\c:\windows\SysWOW64\rundll32.exe
  c:\windows\SysWOW64\rundll32.exe "c:\pplrn\qougrvzf.dll",GetWindowClass
  2⤵
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3776
- - \??\c:\windows\SysWOW64\cmd.exe
    cmd.exe /c ping 127.0.0.1 -n 3&rd /s /q "c:\pplrn"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:3496
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 3
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4432

Network

MITRE ATT&CK Enterprise v16

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

asootej.exe

Path C:\asootej.exe
Size 76KB
SHA256 75b49202b7d7cc66083ac9c90aa60237149a8ac86a42dfc4fd594cbb1d870836
MD5 2916aa402fdab4d9051aa24178795602
SHA1 94a9279ddb98478f0ac97b70e14c5b290b998f5d
SHA512 9cf1928dd3ce9b36e40ea21ad9b9e580f378c0dff0eafe19d92a306f7e2c65371e1b12673e54be07970dbbfba4eb7c5e31e65ff6689dbe2e64d2fb1b2df79d4e
SSDEEP 1536:5L5lxcQxgr9BcXzfGQz0/m4QdQiWC378JztYtfBpf4p7WtX4h:blSQxgr9eXzd4/mxKIm+t3JIh
MD5 SHA1 SHA512 SSDEEP

Submit Download

qougrvzf.dll

Path \??\c:\pplrn\qougrvzf.dll
Size 46KB
SHA256 f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9
MD5 a3fd41430ddcaa55fde840788925406a
SHA1 dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2
SHA512 23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9
SSDEEP 768:2sUfnvxs6iLlhpfFPtnQf7kifD/v7yb9Bh7Cb0VQJojZC/xjTk:2sJT1qf4W/vub9nnV1jZC/xE
MD5 SHA1 SHA512 SSDEEP

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memory/468-13-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/468-16-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/2544-7-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/2544-10-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/3776-15-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/5240-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/5240-1-0x0000000000418000-0x0000000000419000-memory.dmp

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memory/5240-3-0x0000000000400000-0x000000000041A000-memory.dmp

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