e54d7b6b9f1cc61d59519d5cac352c798158f63f834b663a035198a1e6685a8b

Analysis

max time kernel
119s
max time network
133s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 19:46

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General

Target

locales/bn.pak
Size

1.1MB
MD5

c8173f0cc63ca9e02c07abec94892b53
SHA1

2688b199cc40bb2082247fa451eac1304608e48b
SHA256

e6adcfb4f3b3bccd4a27edadc168b503c36551cd6b27fb24043efeb21f691ce5
SHA512

3d2317430722dc15c5d938fa55235af1caa03dcff7a574b44d37d89e7cf2c94dd2e84518b3eeca4a5a8dbec1b99d94aed97429aaf55c63998002d50ce9cb5019
SSDEEP

3072:HPvKTlIymMTAKhwg8KgMokBw20kzhY0/ukfe0/Q8hhar6j7dkjBbJrlD+B5rwDlo:HPvtMTAKhwlFpKAShhG6j7wBb85mlo

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2440	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2440	AcroRd32.exe
2440	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2532	2692	cmd.exe	29
PID 2692 wrote to memory of 2532	2692	cmd.exe	29
PID 2692 wrote to memory of 2532	2692	cmd.exe	29
PID 2532 wrote to memory of 2440	2532	rundll32.exe	30
PID 2532 wrote to memory of 2440	2532	rundll32.exe	30
PID 2532 wrote to memory of 2440	2532	rundll32.exe	30
PID 2532 wrote to memory of 2440	2532	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:2692
- 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:2532
- - 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:2440

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

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Downloads

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

Filesize
3KB

MD5
dbe308dc8589ae3940dceacc5cd4366d

SHA1
e52ba5443ea4bfb923f9e208bb14856f157d6de7

SHA256
28894f435d724fb54c12af8921c2062fb4cd181633a7def5646c4f4ffec44610

SHA512
8252bdbdf161b930e5fcb0d20ab97b1ec9790044213e94d066fa4649df5cf5f11a5bb9be913f514d231b055583c58cd25ce97707e9236bd398da8b9e87b16bef

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