18ce929380ab15f9e9d23d156ff3cff56b94e33641a40379f57e7adc91130c3f

Resubmissions

09/04/2024, 22:11

240409-131wtaea38 8

09/04/2024, 21:43

09/04/2024, 21:18

06/04/2024, 10:55

06/04/2024, 10:41

Analysis

max time kernel
117s
max time network
134s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/04/2024, 10:55

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General

Target

chrome_100_percent.pak
Size

126KB
MD5

44a69827d4aa75426f3c577af2f8618e
SHA1

7bdd115425b05414b64dcdb7d980b92ecd3f15b3
SHA256

bca4401b578a6ac0fe793e8519fed82b5444972b7d6c176ec0369ed13beaad7b
SHA512

5c7bdf1f1deb72c79b860bf48f16c19cb19b4d861c0b6beb585512ad58b1bc4b64e24edfcd97233e5b91dcd0f63ed1c7b278d22ec062fd0dfe28fe49cae52049
SSDEEP

3072:DKzwqCT4w/qzOovg6/Csp7O2o418Gb0+VRLf0ld0GY3cQ39Vm2I:DKzwt44yrgKpyK18Gb0OV8ld0GecQ3f2

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\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	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read\command	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\Read	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

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 3012 wrote to memory of 2768	3012	cmd.exe	29
PID 3012 wrote to memory of 2768	3012	cmd.exe	29
PID 3012 wrote to memory of 2768	3012	cmd.exe	29
PID 2768 wrote to memory of 2440	2768	rundll32.exe	30
PID 2768 wrote to memory of 2440	2768	rundll32.exe	30
PID 2768 wrote to memory of 2440	2768	rundll32.exe	30
PID 2768 wrote to memory of 2440	2768	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:3012
- 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:2768
- - 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⤵
    - 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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
abc8a30bae68c2873c97fab545872892

SHA1
efe2aa73fb35840e834efe77729a24b13f17132f

SHA256
2aeb762ec6c11eac1775147c66a72eece49fa6880df2aed47a3cea68574d2ca8

SHA512
a7ccb28c13d63804839ae7a7f004fe0bc19672df69a131d803f413917181df98e357032840fdceb06b0135833ed70eee57515d6d9683759f3a66d2bef9efbc78

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