c2e26ecea5f1261a2d81205271e534d54b7c445e8e6badefe11c12dae4d63baf

Analysis

max time kernel
177s
max time network
135s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/01/2024, 19:37

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General

Target

locales\bg.pak
Size

608KB
MD5

96372403a9ded96f3a699262029a4580
SHA1

07069b20fe303f6eef1fb6c8c0a19266a0c705c9
SHA256

6c10b64d31e0dc2c4befc6703ac17343ca473b4350cfb3c6e01833f505b69590
SHA512

0df60fe13818f0c3c6838e77686c5de9fa03b97cbf0943f7a2a4ae2f3a0890d3d64b3a7652d8c81c23de876ac92e4c6b71d584fb106c3520c96ef76ba30250fd
SSDEEP

12288:dPnB1xlYrdAs1alUDpzaVVwsl867mFyY3SKN3rsbDxXs7Jfu64KGzrFSZp8VqJ5O:dvBjlYrdAs1alUFTsWoY3SKIVcdu6pGB

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
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_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-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1812	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1812	AcroRd32.exe
1812	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2688	2520	cmd.exe	29
PID 2520 wrote to memory of 2688	2520	cmd.exe	29
PID 2520 wrote to memory of 2688	2520	cmd.exe	29
PID 2688 wrote to memory of 1812	2688	rundll32.exe	30
PID 2688 wrote to memory of 1812	2688	rundll32.exe	30
PID 2688 wrote to memory of 1812	2688	rundll32.exe	30
PID 2688 wrote to memory of 1812	2688	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\locales\bg.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\locales\bg.pak
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2688
- - 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\bg.pak"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:1812

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
a7569aa42082b58d90bbd06c781b1f75

SHA1
2e44e99ca52103d755859113b33de711dc2c7a43

SHA256
a5623cad62bd83b9cb33bb955b942852e9fa084122e5ce25d5a50b2282bfa926

SHA512
b3d4b606f3ec39471e74703ebc9d860b9b92208d3914824588286c7ce618a1462db7210ce4c1755fde9f3113644838ffe65d1ee40620863dd5a75e42ab6d50f8

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