8cbcf688d8cf2be8cfcdb397569fc979c8ac591b7a8d0056e897093ef069ffc6

Resubmissions

15/08/2023, 18:42

230815-xcjytsda27 3

15/08/2023, 18:09

230815-wrmgtscg74 3

Analysis

max time kernel
151s
max time network
124s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
15/08/2023, 18:09

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General

Target

whirlpool/A/Whirlpool-cover.tex
Size

1KB
MD5

a4ebf724451d64c6ee15c04bd187bcfe
SHA1

9ad2d39e1cc62e3c0337769b4d6b2eefc386f951
SHA256

cd24e2c3e527c8fb9124dd174cd99ddaa862f9de5563fc529694a25c6d76afc8
SHA512

ac2f21ed8139e24ad592da2914ced5f7da686182e7dc7313bdb9d3481a842842c94f5b9c80b2fe6467b6f78d3f538208f32e28335edec849d851221245e4fdd2

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-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\.tex	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\.tex\ = "tex_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000_CLASSES\tex_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2860	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2860	AcroRd32.exe
2860	AcroRd32.exe
2860	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 2840	1320	cmd.exe	29
PID 1320 wrote to memory of 2840	1320	cmd.exe	29
PID 1320 wrote to memory of 2840	1320	cmd.exe	29
PID 2840 wrote to memory of 2860	2840	rundll32.exe	30
PID 2840 wrote to memory of 2860	2840	rundll32.exe	30
PID 2840 wrote to memory of 2860	2840	rundll32.exe	30
PID 2840 wrote to memory of 2860	2840	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\whirlpool\A\Whirlpool-cover.tex
1⤵
- Suspicious use of WriteProcessMemory
PID:1320
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\whirlpool\A\Whirlpool-cover.tex
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2840
- - 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\whirlpool\A\Whirlpool-cover.tex"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2860

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
c0f578219b1fe99eaa1b8140260a10f4

SHA1
7abf6736918aec8fea446d9724f86020aa025db3

SHA256
94ae4e7090c6cb129acf7d7945c42cf5cbe05575f9d4d424defaa760257f71fd

SHA512
39fcfc8844c5d6afceff8ef335d34254bbdebf331f4a66005b4a5f77ff8e83b7a81d160408b7263db4207286add7a528ef261a21f90b64d851bcd82d1d6d45e4

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