5fb8612b483498630aa56f45d64c1173affd83a35a52408e3e0fd9dd1274f091

Analysis

max time kernel
152s
max time network
138s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
13/11/2023, 16:11

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General

Target

sample.tar
Size

229.5MB
MD5

0a1464419e61511e902d9feee8ca6048
SHA1

71b76a27a2c94c5dde3161ed4ac40cc79feaff0a
SHA256

2623460fe95def8ba2da11854767461c67b89f992e696abe5d3ed190059ed6f2
SHA512

d2bf4f17603cc961e474cdfc876aa30453ba5c2bd4769cfbd7692bea6934f6f1be05fbca047a6b41ec68841dd146f356820e8f6b4762675591af52859d7c3f4e
SSDEEP

1572864:XITBC5w/uJzLav2eGxxGSaflYvr4+HicY/vP5XscghaRrDWLO3qzC6xId5Y:4TgjyGIYjYcYv57ghadDvT

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-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.tar	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\.tar\ = "tar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2085049433-1067986815-1244098655-1000_CLASSES\tar_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2568	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2568	AcroRd32.exe
2568	AcroRd32.exe
2568	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2656	2416	cmd.exe	29
PID 2416 wrote to memory of 2656	2416	cmd.exe	29
PID 2416 wrote to memory of 2656	2416	cmd.exe	29
PID 2656 wrote to memory of 2568	2656	rundll32.exe	30
PID 2656 wrote to memory of 2568	2656	rundll32.exe	30
PID 2656 wrote to memory of 2568	2656	rundll32.exe	30
PID 2656 wrote to memory of 2568	2656	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\sample.tar
1⤵
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\sample.tar
  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\sample.tar"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2568

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

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Downloads

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

Filesize
3KB

MD5
a637e9dee3ea800c6f89a645f2b4c5a2

SHA1
28ebf45c214ade7ec4ec71836fb54ddcd2060b0f

SHA256
b9aba0159940309359dc3c614b3b8695b531c033bb2f4db402e954a2125593d2

SHA512
cc9891f4a9e2ba23f6d4e038916cc4f4c5da6e12eb95b44e7deb858fe39c890a4c05568a6e4577f58ebbdd23c1a7f5a68b84ac41cc3a83576ad096c99f0d8a55

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