20ecc8d6a8738b7dc3bdd19c19c4348cb4206b4e7368d253d5516ccf07e90093

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 08:51

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General

Target

locales/bn.pak
Size

812KB
MD5

fac2c752c57175a4b1f4630e3667123e
SHA1

a2dbcf1dd7b3cac499b9f782c7393ab438039584
SHA256

71f99a67bb310fab8068eeed7ce24ea7624a66051ba4e719d051cc7e67e78001
SHA512

4820704bd92dfb60736da5b84c8bc9135fca484c678585ec9d26dcb90632e382f354d03b539599f4816feb027dd285ff06ed8a520bede56d7a1c590d942e4250
SSDEEP

3072:3V/m0JEVzjcnmbVrH4kSBbdXWSM5QwXlFE:3w0a5rHEBbd+5tle

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-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2560	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2560	AcroRd32.exe
2560	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2704	3016	cmd.exe	29
PID 3016 wrote to memory of 2704	3016	cmd.exe	29
PID 3016 wrote to memory of 2704	3016	cmd.exe	29
PID 2704 wrote to memory of 2560	2704	rundll32.exe	30
PID 2704 wrote to memory of 2560	2704	rundll32.exe	30
PID 2704 wrote to memory of 2560	2704	rundll32.exe	30
PID 2704 wrote to memory of 2560	2704	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:3016
- 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:2704
- - 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:2560

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
378225b34e438c3753208bcac89284b8

SHA1
1aaaa7169bd3bf9442f1c83ebb597b66c80fcd02

SHA256
8a2214afef7ddde0760388e64f4d1d0de70a7a88a84d5a4d8d0b22f2ea28cd49

SHA512
da62830666d87000ea454a335dd1317c33ba6178b6dce5d809763be00cdbbd0520fa921b424d9408084838b0b38231a1c5517c91f3438a087b8e108d0853b92d

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