841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25-03-2024 21:05

240325-zxdnnahe48 3

25-03-2024 20:59

25-03-2024 20:56

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Analysis

max time kernel
18s
max time network
19s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:59

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General

Target

Prefetch/VC_REDIST.X64.EXE-ABB5DBF2.pf
Size

13KB
MD5

66cd7ad996b790c0aaf08cf96bafd24d
SHA1

2156cc0bc23ec78df54cf71914f4f24bf52c3a1f
SHA256

0b5e6ee963badbb175fc559902961f0d39385fa8b4e82dda7d7f35ab03d49269
SHA512

19f376d2c4f59a20dc5546aaa817e5aba44261e27ff040a96bdce40a34aa155f7bd18647d188114416f198c36479503daa6fd29ce630fc21280b0bb867eaf479
SSDEEP

384:eSSP5AYr2/8p0y9cHpi91LBlwecKTxodCXXJ:sAYrt0yaAL6KVSo

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-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\.pf\ = "pf_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\.pf	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2610426812-2871295383-373749122-1000_CLASSES\pf_auto_file\shell\Read\command	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2624	AcroRd32.exe
2624	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 3056	2188	cmd.exe	29
PID 2188 wrote to memory of 3056	2188	cmd.exe	29
PID 2188 wrote to memory of 3056	2188	cmd.exe	29
PID 3056 wrote to memory of 2624	3056	rundll32.exe	30
PID 3056 wrote to memory of 2624	3056	rundll32.exe	30
PID 3056 wrote to memory of 2624	3056	rundll32.exe	30
PID 3056 wrote to memory of 2624	3056	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\VC_REDIST.X64.EXE-ABB5DBF2.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\VC_REDIST.X64.EXE-ABB5DBF2.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3056
- - 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\Prefetch\VC_REDIST.X64.EXE-ABB5DBF2.pf"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2624

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
b0f18ab16f96c62928171aa66b577721

SHA1
7dcfa4b81101058ba36c5848c24524a829a65fb4

SHA256
dc272ad78754d90507f3256a2291af172e4c66fcd79fcd32b11f59ed53583af5

SHA512
2c1820d5592d2cc823b1531b9e2f9c56ef9bedb0f81050757997928a036d7c3a533f822558a1cf0c8051cf2de4dc92264df5eac68225738c91861477ec215806

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