30091faafd62ea7ba9868db2ee575dab98fd126a78d39590f57ea7b38b20d966

Resubmissions

21-09-2024 02:25

240921-cwhvna1bmc 10

20-09-2024 21:59

240920-1wjzqa1amp 10

Analysis

max time kernel
357s
max time network
366s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 02:25

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General

Target

chrome_100_percent.pak
Size

150KB
MD5

b1bccf31fa5710207026d373edd96161
SHA1

ae7bb0c083aea838df1d78d61b54fb76c9a1182e
SHA256

49aff5690cb9b0f54f831351aa0f64416ba180a0c4891a859fa7294e81e9c8e3
SHA512

134a13ad86f8bd20a1d2350236269fd39c306389a600556a82025d5e0d5adaab0709d59e9b7ee96e8e2d25b6df49fefea27cdccefe5fba9687abf92a9a941d91
SSDEEP

3072:AzwJCGIekwENgMBsFAXg6VKdL2o418Gb0+VRLf0ld0GY3cQ3ERVm2I:Azw1IekmMBdQXK18Gb0OV8ld0GecQ3Ey

Score

3^/10

discovery

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000_CLASSES\pak_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2232	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2232	AcroRd32.exe
2232	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2804	2820	cmd.exe	31
PID 2820 wrote to memory of 2804	2820	cmd.exe	31
PID 2820 wrote to memory of 2804	2820	cmd.exe	31
PID 2804 wrote to memory of 2232	2804	rundll32.exe	32
PID 2804 wrote to memory of 2232	2804	rundll32.exe	32
PID 2804 wrote to memory of 2232	2804	rundll32.exe	32
PID 2804 wrote to memory of 2232	2804	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
37c156002a4047dd62d93f61c5ef3bed

SHA1
324555666a31d3f0a1b52ad34d8a986029a05f97

SHA256
574eab0bf002b79dc14808f8019a3533d11a920292a900b460706748460467a2

SHA512
16bf1654bfd02ce7da3fc1fac8d5d6d42800c35b3d00ecc3c48158892cbc6935e25cf033a9d4ffa7926e5f33eddd12ddccd97b7ddf6762b356635ab565baa55e

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