56bacfb737076b0b10f9896ac124c2e8f83cb855f7b31ef5a95338b7529b3126

Analysis

max time kernel
119s
max time network
135s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
03/07/2024, 04:56

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General

Target

locales/bn.pak
Size

765KB
MD5

bc688ba7dd2b0f9946ac98a1df15131f
SHA1

b453ec6785191b3dbd5d78e7b25b9481b6522b32
SHA256

6ad844d2b22c8fbf3587ea603140deb1475dab934ac62e402dbf1c6946dc882e
SHA512

3d60102975a6acb39ad5f750128ab4967bdb5a64eeb398c5fc71e5fcca860eb97487df4e85269a5ffdc1f030bae2ff1c03d61b08565792f84696693aef8119ba
SSDEEP

3072:PnsmuG+M6YiWRQGbMzkoBbLN7SG5zwXl9M:Pv+gvRlbMzBbLB54lm

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_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-1-5-21-39690363-730359138-1046745555-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pak_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2696	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2696	AcroRd32.exe
2696	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2720	2400	cmd.exe	29
PID 2400 wrote to memory of 2720	2400	cmd.exe	29
PID 2400 wrote to memory of 2720	2400	cmd.exe	29
PID 2720 wrote to memory of 2696	2720	rundll32.exe	30
PID 2720 wrote to memory of 2696	2720	rundll32.exe	30
PID 2720 wrote to memory of 2696	2720	rundll32.exe	30
PID 2720 wrote to memory of 2696	2720	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\bn.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\bn.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2720
- - 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\locales\bn.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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
baa2a6951c7175181da07f4f5124d5e2

SHA1
baac6962277a9699f7f096cc29969e0ffb5cc02e

SHA256
f8cab844125892f561b03ffeeb2c81ed79b473aebe377ce2b09f4269443394a9

SHA512
4fd9a913520d3e2df7b7fefe17377765cbd4f2013a9da640177cd1dcae26e129cc2ffd1a0636c726ae6cbd1a82e9f5987ce09e5c3203918b73121b9e707a8539

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