479f024e77b53300da8dd0e0d0243dca32af5c1aefaa2f254127bc59f2901d93

Analysis

max time kernel
103s
max time network
27s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
08-07-2024 11:24

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General

Target

chrome_100_percent.pak
Size

126KB
MD5

d31f3439e2a3f7bee4ddd26f46a2b83f
SHA1

c5a26f86eb119ae364c5bf707bebed7e871fc214
SHA256

9f79f46ca911543ead096a5ee28a34bf1fbe56ec9ba956032a6a2892b254857e
SHA512

aa27c97bf5581eb3f5e88f112df8bfb6a5283ce44eb13fbc41855008f84fb5b111dfe0616c310c3642b7f8ac99623d7c217aecc353f54f4d8f7042840099abc5
SSDEEP

3072:5KzwqCT4waJL2myFhPNL2o418Gb0+VRLf0ld0GY3cQ39Vm2I:5Kzwt4LwmU3K18Gb0OV8ld0GecQ3f2

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-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pak_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2352	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2352	AcroRd32.exe
2352	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2816	2296	cmd.exe	31
PID 2296 wrote to memory of 2816	2296	cmd.exe	31
PID 2296 wrote to memory of 2816	2296	cmd.exe	31
PID 2816 wrote to memory of 2352	2816	rundll32.exe	32
PID 2816 wrote to memory of 2352	2816	rundll32.exe	32
PID 2816 wrote to memory of 2352	2816	rundll32.exe	32
PID 2816 wrote to memory of 2352	2816	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_100_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- 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:2816
- - 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:2352

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
61af17e630831b0f04c4ed1d3b1bcbfd

SHA1
47a5fb5f6084b708045a6a4b1c2db784e1145aa4

SHA256
58a73978cebf7e24e7614571fc9f63eb0ff66c6ba939803f9aaa3f000060a13f

SHA512
cfe412756932528a5419c005094384c1933abc82bdc01cc139a60f88945c66513331cb293a96985d7b86b6598bde2fea8099ca54c90e76564600d2bcc6139f17

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