05451b195a176fa75fb7a8de600068e1f08b2a0b5cef42eef8439ec28ed26a59

Resubmissions

27/04/2024, 19:36

240427-ybnfasfc9t 7

27/04/2024, 19:12

240427-xwpy7afb2v 7

27/04/2024, 18:20

240427-wy4ppaed6x 7

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
27/04/2024, 19:36

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General

Target

chrome_100_percent.pak
Size

124KB
MD5

acd0fa0a90b43cd1c87a55a991b4fac3
SHA1

17b84e8d24da12501105b87452f86bfa5f9b1b3c
SHA256

ccbca246b9a93fa8d4f01a01345e7537511c590e4a8efd5777b1596d10923b4b
SHA512

3e4c4f31c6c7950d5b886f6a8768077331a8f880d70b905cf7f35f74be204c63200ff4a88fa236abccc72ec0fc102c14f50dd277a30f814f35adfe5a7ae3b774
SSDEEP

3072:vlKzwqCT4wDNzIwL2o418Gb0+VRLf0ld0GY3cQ39Vm2I:vlKzwt4uEgK18Gb0OV8ld0GecQ3f2

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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_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-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000_CLASSES\pak_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2704	AcroRd32.exe
2704	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 2636	1660	cmd.exe	29
PID 1660 wrote to memory of 2636	1660	cmd.exe	29
PID 1660 wrote to memory of 2636	1660	cmd.exe	29
PID 2636 wrote to memory of 2704	2636	rundll32.exe	30
PID 2636 wrote to memory of 2704	2636	rundll32.exe	30
PID 2636 wrote to memory of 2704	2636	rundll32.exe	30
PID 2636 wrote to memory of 2704	2636	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:1660
- 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:2636
- - 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:2704

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
aa3b6de04307dc5fc9d7493d00c5d93b

SHA1
f330a257accd0fe029d9e2899b361c6d79e52eaf

SHA256
c3279e725310f9f733917b76a1ab0618706f48802da46ee5b5c1179394b9b8cf

SHA512
2ef2cb56345075be81f2943eb58c4ec05155156478c1fcbb9e5c3daff68c41b04d15fc919e560126eedeaced99b83020113ed59d0132d2f42d9216f18899bb35

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