841a98464457d2fceff8a35e6b575b1e5e0681f7232cb3c2b94c698e38960a25

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25-03-2024 21:05

240325-zxdnnahe48 3

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25-03-2024 20:56

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25-03-2024 20:38

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Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 20:38

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General

Target

Prefetch/7ZFM.EXE-56DE4F9A.pf
Size

12KB
MD5

dd30415e3221439ddd88d9e7676480ac
SHA1

f1cb9de9987eabc7b15777cd28f26389094a4f6a
SHA256

27ced795d64fd279a3db17ab57169d3ab40d709af8aad26a2d4d14d9f2039e3b
SHA512

2c2bc1c3a7721d161cd301e02e809fa099e63b1292494d7a0d0cf1a2d7dd963bb03b818e8ffb4802a12d9bcdd13ac04c8b117775fd3b60c949475914e6d216c8
SSDEEP

384:sbiQggkgvSwkixL5jMfrJmpf0+eOqFfZZ:s2QMgpN5AzOUf3

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3064	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3064	AcroRd32.exe
3064	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2656	1756	cmd.exe	29
PID 1756 wrote to memory of 2656	1756	cmd.exe	29
PID 1756 wrote to memory of 2656	1756	cmd.exe	29
PID 2656 wrote to memory of 3064	2656	rundll32.exe	30
PID 2656 wrote to memory of 3064	2656	rundll32.exe	30
PID 2656 wrote to memory of 3064	2656	rundll32.exe	30
PID 2656 wrote to memory of 3064	2656	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Prefetch\7ZFM.EXE-56DE4F9A.pf
1⤵
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Prefetch\7ZFM.EXE-56DE4F9A.pf
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2656
- - 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\7ZFM.EXE-56DE4F9A.pf"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3064

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
e95d43591aed7f4692a67172a98813f9

SHA1
2859064df9add166c5dc55e2ba2ba8f5767fef8f

SHA256
2db2b110f0b20443b1d716c6a0824cbfb13fdfaf76e3a089d87cd8a97676c4c4

SHA512
89e129a7d2c7f9e613e2b6d9e741ad7dbd2b5465b86aa509603874975265976a7ca4b3e6d291093944eab3b613febcf11165705efcc28522a8fab4ee8f7a6d15

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