e253dda73c6d635fdd02255dbee9f61d2521deb8bc3642c95a203f6104e1ea35

Resubmissions

16/05/2024, 15:35

240516-s1rw5abf57 8

16/05/2024, 15:33

240516-szev6sbe69 8

Analysis

max time kernel
118s
max time network
124s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
16/05/2024, 15:33

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General

Target

Perseverate/Sidetallerken.msk
Size

2KB
MD5

fe015ab4c7b1a4b45cb5482a5129e455
SHA1

bdab53a97ae82149b83b5c3fb663b924a6731b16
SHA256

88c2496adf0fe02a1d2feb422956a16d4ac6cb7304bf9e169996bf9fdc0c0c7d
SHA512

2bc395ff0e915dcda1e901716f7b06dd8b93fb08989c6ac8d860aadd77d026039c193016748e82a8e0b8e3c68447a1b30b4f962792ca57d5c52b8fd14fe66460

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-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.msk	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.msk\ = "msk_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\msk_auto_file	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2768	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2768	AcroRd32.exe
2768	AcroRd32.exe
2768	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 3000	1740	cmd.exe	29
PID 1740 wrote to memory of 3000	1740	cmd.exe	29
PID 1740 wrote to memory of 3000	1740	cmd.exe	29
PID 3000 wrote to memory of 2768	3000	rundll32.exe	30
PID 3000 wrote to memory of 2768	3000	rundll32.exe	30
PID 3000 wrote to memory of 2768	3000	rundll32.exe	30
PID 3000 wrote to memory of 2768	3000	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Perseverate\Sidetallerken.msk
1⤵
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Perseverate\Sidetallerken.msk
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3000
- - 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\Perseverate\Sidetallerken.msk"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2768

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
ddf0be39baac7c69d727fbd1edad5122

SHA1
a76ef61175a6b2d9c256a47a01fbc92471634711

SHA256
802304cd475ea21146a29df185e74d5232998b27d1d1d83337df97762361f339

SHA512
2c7993c17af02ec98b0c344315a4c57fe58af1bd5da1072a58b2dd80271190f1ae92522c9f337f5ef706b6f649d69cb4e0c7fe3db5cdf700db70b284c6c95a3a

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